<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Posts on Jonas Mehtali</title><link>https://jonasx.xyz/post/</link><description>Recent content in Posts on Jonas Mehtali</description><generator>Hugo -- gohugo.io</generator><language>en-us</language><managingEditor>jonas.mht.private@gmail.com (Jonas Mehtali)</managingEditor><webMaster>jonas.mht.private@gmail.com (Jonas Mehtali)</webMaster><lastBuildDate>Mon, 22 Sep 2025 00:00:00 +0000</lastBuildDate><atom:link href="https://jonasx.xyz/post/index.xml" rel="self" type="application/rss+xml"/><item><title>About</title><link>https://jonasx.xyz/p/about-me/</link><pubDate>Mon, 20 Mar 2023 00:00:00 +0000</pubDate><author>jonas.mht.private@gmail.com (Jonas Mehtali)</author><guid>https://jonasx.xyz/p/about-me/</guid><description>&lt;img src="https://jonasx.xyz/p/about-me/cryotrack-experiment.jpg" alt="Featured image of post About" /&gt;&lt;h1 id="jonas-mehtali"&gt;Jonas Mehtali
&lt;/h1&gt;&lt;p&gt;PhD Student in Computer-Assisted Interventions · ICube Laboratory, University of Strasbourg&lt;/p&gt;
&lt;hr&gt;
&lt;h2 id="phd-student--icube-laboratory"&gt;PhD Student — ICube Laboratory
&lt;/h2&gt;&lt;p&gt;Automatic multi-needle adaptive planning for percutaneous thermal ablation.&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;PhD since September 2024&lt;/strong&gt; · Caroline Essert and Juan Verde · Strasbourg, France&lt;/p&gt;
&lt;hr&gt;
&lt;h2 id="research"&gt;Research
&lt;/h2&gt;&lt;p&gt;Thermal ablation is an established option for treating small liver tumors. Comparable oncologic outcomes to surgery, minimally invasive, low morbidity. The problem: when a tumor exceeds what a single needle can cover, clinicians plan multiple overlapping ablations using 2D CT views and complex interfaces. Local recurrence rates sit between 10 and 39.1% within five years, often because adequate coverage is hard to achieve manually.&lt;/p&gt;
&lt;p&gt;My PhD addresses this across three axes, built directly on my Master internships at ICube and IHU Strasbourg. Currently funded through the ITI HealthTech doctoral program at ED269 MSII.&lt;/p&gt;
&lt;h3 id="multi-needle-trajectory-optimization"&gt;Multi-needle trajectory optimization
&lt;/h3&gt;&lt;p&gt;Compare exhaustive and learning-based methods for optimal needle placement, accounting for vital anatomical structures. Explore search space reduction, adaptive simulation resolution, and DL-based ablation volume estimation.&lt;/p&gt;
&lt;h3 id="intraoperative-replanning"&gt;Intraoperative replanning
&lt;/h3&gt;&lt;p&gt;Extend optimization to real-time replanning. Track already-inserted needles, estimate partly treated volume dynamically, and adapt the plan for subsequent insertions as the procedure unfolds.&lt;/p&gt;
&lt;h3 id="ergonomic-planning-interface"&gt;Ergonomic planning interface
&lt;/h3&gt;&lt;p&gt;Design and implement a user-friendly GUI for planning, tracking, and replanning. Validate usability through studies with both clinical experts and novices.&lt;/p&gt;
&lt;hr&gt;
&lt;h2 id="technical-toolkit"&gt;Technical Toolkit
&lt;/h2&gt;&lt;table&gt;
&lt;thead&gt;
&lt;tr&gt;
&lt;th&gt;Category&lt;/th&gt;
&lt;th&gt;Tools&lt;/th&gt;
&lt;/tr&gt;
&lt;/thead&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td&gt;Languages&lt;/td&gt;
&lt;td&gt;Python · C/C++ · CUDA&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;Medical Imaging&lt;/td&gt;
&lt;td&gt;3D Slicer · PyTorch · VTK&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;Graphics &amp;amp; XR&lt;/td&gt;
&lt;td&gt;OpenGL · Unity · Blender · Maya&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;hr&gt;
&lt;h2 id="publications"&gt;Publications
&lt;/h2&gt;&lt;table&gt;
&lt;thead&gt;
&lt;tr&gt;
&lt;th&gt;Paper&lt;/th&gt;
&lt;th&gt;Venue&lt;/th&gt;
&lt;th&gt;Highlights&lt;/th&gt;
&lt;th&gt;DOI&lt;/th&gt;
&lt;/tr&gt;
&lt;/thead&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td&gt;&lt;strong&gt;Cryotrack&lt;/strong&gt; — Planning and Navigation for Computer Assisted Cryoablation&lt;/td&gt;
&lt;td&gt;MICCAI 2024&lt;/td&gt;
&lt;td&gt;H.J. Krumb, J. Mehtali, J. Verde, A. Mukhopadhyay, C. Essert&lt;/td&gt;
&lt;td&gt;&lt;a class="link" href="https://doi.org/10.1007/978-3-031-72089-5_10" target="_blank" rel="noopener"
&gt;10.1007/978-3-031-72089-5_10&lt;/a&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;&lt;strong&gt;HEAT&lt;/strong&gt; — High-Efficiency Simulation for Thermal Ablation Therapy&lt;/td&gt;
&lt;td&gt;IJCARS 2025&lt;/td&gt;
&lt;td&gt;J. Mehtali, J. Verde, C. Essert — GPU-accelerated multi-resolution simulation, results in under 1 second&lt;/td&gt;
&lt;td&gt;&lt;a class="link" href="https://doi.org/10.1007/s11548-025-03350-z" target="_blank" rel="noopener"
&gt;10.1007/s11548-025-03350-z&lt;/a&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td&gt;&lt;strong&gt;C-NCA&lt;/strong&gt; — Chained Neural Cellular Automata for Fast Thermal Ablation Estimation&lt;/td&gt;
&lt;td&gt;MICCAI 2025 &lt;span class="badge"&gt;Latest&lt;/span&gt;&lt;/td&gt;
&lt;td&gt;J. Mehtali, J. Verde, C. Essert — 12,210 params · 476 fps · interactive optimization loops&lt;/td&gt;
&lt;td&gt;&lt;a class="link" href="https://doi.org/10.1007/978-3-032-04965-0_7" target="_blank" rel="noopener"
&gt;10.1007/978-3-032-04965-0_7&lt;/a&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;hr&gt;
&lt;h2 id="beyond-research"&gt;Beyond Research
&lt;/h2&gt;&lt;p&gt;When something annoying needs solving, I build tools for it. Small utilities, experiments with LLMs, whatever makes a recurring problem less tedious. Side projects include game development: started with Sensha (Python/PyGame) for my Baccalauréat, later revisited in Godot with multiplayer support.&lt;/p&gt;
&lt;hr&gt;
&lt;h2 id="profiles"&gt;Profiles
&lt;/h2&gt;&lt;ul&gt;
&lt;li&gt;&lt;strong&gt;GitHub&lt;/strong&gt; — &lt;a class="link" href="https://github.com/JonasMht" target="_blank" rel="noopener"
&gt;JonasMht&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;strong&gt;Google Scholar&lt;/strong&gt; — &lt;a class="link" href="https://scholar.google.com/citations?user=0QQM6zIAAAAJ" target="_blank" rel="noopener"
&gt;Jonas Mehtali&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;strong&gt;ORCID&lt;/strong&gt; — &lt;a class="link" href="https://orcid.org/0009-0003-3688-7782" target="_blank" rel="noopener"
&gt;0009-0003-3688-7782&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;strong&gt;ResearchGate&lt;/strong&gt; — &lt;a class="link" href="https://www.researchgate.net/profile/Jonas-Mehtali" target="_blank" rel="noopener"
&gt;Jonas Mehtali&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;strong&gt;HAL&lt;/strong&gt; — &lt;a class="link" href="https://hal.science/search?q=Jonas%20Mehtali" target="_blank" rel="noopener"
&gt;Jonas Mehtali&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;</description></item><item><title>C-NCA : Chained Neural Cellular Automata</title><link>https://jonasx.xyz/p/cnca-2025/</link><pubDate>Mon, 22 Sep 2025 00:00:00 +0000</pubDate><author>jonas.mht.private@gmail.com (Jonas Mehtali)</author><guid>https://jonasx.xyz/p/cnca-2025/</guid><description>&lt;img src="https://jonasx.xyz/p/cnca-2025/TargetOutput.png" alt="Featured image of post C-NCA : Chained Neural Cellular Automata" /&gt;&lt;h2 id="description"&gt;Description
&lt;/h2&gt;&lt;p&gt;We introduced an approach to estimate the heat induced tissue death in percutaneous thermal ablation based on a chained NCA architecture. While not directly producing a heat map, it accurately estimates cell death induced by thermal damage by implicitly modeling temperature field effects and evolution, going beyond heat distribution, with &lt;b&gt;low root mean square error and high speed&lt;/b&gt;. The model is &lt;b&gt;computationally efficient&lt;/b&gt;, characterized by a mere &lt;b&gt;12,210 learned parameters&lt;/b&gt;, and is capable of operating on a standard desktop computer due to its implementation through basic 3D convolutions. It can compute 25 minutes of treatment at a frequency up to &lt;b&gt;476 fps&lt;/b&gt;, making it suitable for interactive simulations and optimization loops.&lt;/p&gt;
&lt;p&gt;&lt;figure&gt;&lt;img src="https://jonasx.xyz/p/cnca-2025/prediction_pipeline.png"&gt;&lt;figcaption&gt;
&lt;h4&gt;Model Architecture&lt;/h4&gt;
&lt;/figcaption&gt;
&lt;/figure&gt;
&lt;figure&gt;&lt;img src="https://jonasx.xyz/p/cnca-2025/TargetOutput.png"&gt;&lt;figcaption&gt;
&lt;h4&gt;Target Output Pairs&lt;/h4&gt;
&lt;/figcaption&gt;
&lt;/figure&gt;
&lt;/p&gt;
&lt;!--Add all the logos side by side--&gt;
&lt;p&gt;&lt;figure&gt;&lt;img src="https://jonasx.xyz/p/cnca-2025/miccai2025-logo.png"
alt="MICCAI 2025 Logo" width="50%"&gt;
&lt;/figure&gt;
&lt;figure&gt;&lt;img src="https://jonasx.xyz/p/cnca-2025/Planchette%20Logos.png"
alt="Logos of collaborating institutions" width="100%"&gt;
&lt;/figure&gt;
&lt;/p&gt;</description></item><item><title>HEAT: High-Efficiency Simulation for Thermal Ablation Therapy</title><link>https://jonasx.xyz/p/2025-heat-ijcars/</link><pubDate>Tue, 01 Apr 2025 00:00:00 +0000</pubDate><author>jonas.mht.private@gmail.com (Jonas Mehtali)</author><guid>https://jonasx.xyz/p/2025-heat-ijcars/</guid><description>&lt;h2 id="abstract"&gt;Abstract
&lt;/h2&gt;&lt;p&gt;Percutaneous thermal ablation is increasingly popular but still suffers from a complex preoperative planning, especially regarding the prediction of the ablation zone. We propose &lt;strong&gt;HEAT&lt;/strong&gt; (High-Efficiency simulation for thermal Ablation Therapy), a novel GPU-accelerated simulation framework for thermal ablation that enables real-time planning.&lt;/p&gt;
&lt;p&gt;This work was published in the &lt;em&gt;International Journal of Computer Assisted Radiology and Surgery (IJCARS)&lt;/em&gt; in 2025.&lt;/p&gt;
&lt;p&gt;&lt;a class="link" href="https://hal.science/hal-04973371" target="_blank" rel="noopener"
&gt;📄 Read the Paper&lt;/a&gt; · &lt;a class="link" href="https://doi.org/10.1007/s11548-025-03350-z" target="_blank" rel="noopener"
&gt;🔬 DOI&lt;/a&gt;&lt;/p&gt;
&lt;hr&gt;
&lt;h2 id="motivation"&gt;Motivation
&lt;/h2&gt;&lt;p&gt;Thermal ablation is a minimally invasive cancer treatment that uses heat to destroy tumors. However, accurately predicting the ablation zone (the area that will be destroyed) remains challenging. Traditional simulation methods are too slow for clinical use, taking minutes or even hours to compute.&lt;/p&gt;
&lt;h2 id="approach"&gt;Approach
&lt;/h2&gt;&lt;p&gt;HEAT leverages GPU acceleration to achieve real-time performance:&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;&lt;strong&gt;Fast computation&lt;/strong&gt;: Results in under 1 second for interactive planning&lt;/li&gt;
&lt;li&gt;&lt;strong&gt;GPU parallelization&lt;/strong&gt;: Efficient handling of 3D volumetric data&lt;/li&gt;
&lt;li&gt;&lt;strong&gt;Physical accuracy&lt;/strong&gt;: Implements realistic heat transfer models including:
&lt;ul&gt;
&lt;li&gt;Pennes bioheat equation&lt;/li&gt;
&lt;li&gt;Perfusion effects&lt;/li&gt;
&lt;li&gt;Heat sink effects near blood vessels&lt;/li&gt;
&lt;/ul&gt;
&lt;/li&gt;
&lt;/ul&gt;
&lt;h2 id="results"&gt;Results
&lt;/h2&gt;&lt;p&gt;The system demonstrates:&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;&lt;strong&gt;Real-time performance&lt;/strong&gt;: Sub-second simulation times&lt;/li&gt;
&lt;li&gt;&lt;strong&gt;Clinical accuracy&lt;/strong&gt;: Validated against experimental data&lt;/li&gt;
&lt;li&gt;&lt;strong&gt;Practical utility&lt;/strong&gt;: Integrates with existing surgical planning workflows&lt;/li&gt;
&lt;/ul&gt;
&lt;h2 id="authors"&gt;Authors
&lt;/h2&gt;&lt;ul&gt;
&lt;li&gt;&lt;strong&gt;Jonas Mehtali&lt;/strong&gt; (Lead Author)&lt;/li&gt;
&lt;li&gt;Juan Verde&lt;/li&gt;
&lt;li&gt;Caroline Essert&lt;/li&gt;
&lt;/ul&gt;
&lt;p&gt;&lt;em&gt;ICube Laboratory, University of Strasbourg&lt;/em&gt;&lt;/p&gt;
&lt;h2 id="related-work"&gt;Related Work
&lt;/h2&gt;&lt;p&gt;This work builds on my research internship in 2024 at ICube/IHU Strasbourg, which focused on networked computing for thermal ablation simulation. The HEAT project represents a significant advancement in computational efficiency and clinical applicability.&lt;/p&gt;
&lt;p&gt;See also: &lt;a class="link" href="https://jonasx.xyz/p/2024-cryotrack-miccai/" &gt;Cryotrack: Planning and Navigation for Computer Assisted Cryoablation (MICCAI 2024)&lt;/a&gt;&lt;/p&gt;</description></item><item><title>Cryotrack: Planning and Navigation for Computer Assisted Cryoablation</title><link>https://jonasx.xyz/p/2024-cryotrack-miccai/</link><pubDate>Sun, 06 Oct 2024 00:00:00 +0000</pubDate><author>jonas.mht.private@gmail.com (Jonas Mehtali)</author><guid>https://jonasx.xyz/p/2024-cryotrack-miccai/</guid><description>&lt;h2 id="abstract"&gt;Abstract
&lt;/h2&gt;&lt;p&gt;Cryoablation is a minimally invasive technique that uses extreme cold to destroy cancerous tumors. However, it remains challenging to plan and navigate during the procedure. We present &lt;strong&gt;Cryotrack&lt;/strong&gt;, a novel planning and navigation system for computer-assisted cryoablation.&lt;/p&gt;
&lt;p&gt;This work was published at the &lt;em&gt;27th International Conference on Medical Image Computing and Computer Assisted Intervention (MICCAI 2024)&lt;/em&gt;, Marrakesh, Morocco, October 6-10, 2024.&lt;/p&gt;
&lt;p&gt;&lt;a class="link" href="https://papers.miccai.org/miccai-2024/179-Paper1240.html" target="_blank" rel="noopener"
&gt;📄 Read the Paper&lt;/a&gt; · &lt;a class="link" href="https://doi.org/10.1007/978-3-031-72089-5_10" target="_blank" rel="noopener"
&gt;🔬 DOI&lt;/a&gt;&lt;/p&gt;
&lt;hr&gt;
&lt;h2 id="motivation"&gt;Motivation
&lt;/h2&gt;&lt;p&gt;Cryoablation offers several advantages over thermal ablation:&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;Precise control of the ablation zone&lt;/li&gt;
&lt;li&gt;Minimal pain for the patient&lt;/li&gt;
&lt;li&gt;Ability to treat tumors near sensitive structures&lt;/li&gt;
&lt;/ul&gt;
&lt;p&gt;However, planning cryoablation procedures remains challenging due to:&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;Complex ice ball formation dynamics&lt;/li&gt;
&lt;li&gt;Difficulty in visualizing the ablation zone in real-time&lt;/li&gt;
&lt;li&gt;Lack of dedicated planning tools&lt;/li&gt;
&lt;/ul&gt;
&lt;h2 id="cryotrack-system"&gt;Cryotrack System
&lt;/h2&gt;&lt;p&gt;Cryotrack provides:&lt;/p&gt;
&lt;ol&gt;
&lt;li&gt;
&lt;p&gt;&lt;strong&gt;Pre-operative Planning&lt;/strong&gt;&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;3D visualization of the target tumor&lt;/li&gt;
&lt;li&gt;Simulation of ice ball growth&lt;/li&gt;
&lt;li&gt;Optimization of probe placement&lt;/li&gt;
&lt;/ul&gt;
&lt;/li&gt;
&lt;li&gt;
&lt;p&gt;&lt;strong&gt;Intra-operative Navigation&lt;/strong&gt;&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;Real-time tracking of cryoprobes&lt;/li&gt;
&lt;li&gt;Augmented reality overlay of predicted ablation zone&lt;/li&gt;
&lt;li&gt;Integration with imaging systems&lt;/li&gt;
&lt;/ul&gt;
&lt;/li&gt;
&lt;li&gt;
&lt;p&gt;&lt;strong&gt;Visualization&lt;/strong&gt;&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;Clear visualization of the lethal ice zone vs. the benign cold zone&lt;/li&gt;
&lt;li&gt;Heat sink effect awareness near blood vessels&lt;/li&gt;
&lt;/ul&gt;
&lt;/li&gt;
&lt;/ol&gt;
&lt;h2 id="results"&gt;Results
&lt;/h2&gt;&lt;p&gt;The system was validated through:&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;Phantom experiments&lt;/li&gt;
&lt;li&gt;Ex-vivo tissue testing&lt;/li&gt;
&lt;li&gt;Clinical feasibility studies&lt;/li&gt;
&lt;/ul&gt;
&lt;h2 id="authors"&gt;Authors
&lt;/h2&gt;&lt;ul&gt;
&lt;li&gt;Henry J. Krumb&lt;/li&gt;
&lt;li&gt;&lt;strong&gt;Jonas Mehtali&lt;/strong&gt;&lt;/li&gt;
&lt;li&gt;Juan Verde&lt;/li&gt;
&lt;li&gt;Anirban Mukhopadhyay&lt;/li&gt;
&lt;li&gt;Caroline Essert&lt;/li&gt;
&lt;/ul&gt;
&lt;p&gt;&lt;em&gt;ICube Laboratory, University of Strasbourg&lt;/em&gt;&lt;/p&gt;
&lt;h2 id="conference-experience"&gt;Conference Experience
&lt;/h2&gt;&lt;p&gt;Presenting at MICCAI 2024 in Marrakesh was an incredible experience. The feedback from the medical imaging community helped refine our approach and identify new research directions.&lt;/p&gt;
&lt;h2 id="related-work"&gt;Related Work
&lt;/h2&gt;&lt;p&gt;This work complements my later research on thermal ablation:&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;&lt;a class="link" href="https://jonasx.xyz/p/2025-heat-ijcars/" &gt;HEAT: High-Efficiency Simulation for Thermal Ablation Therapy (IJCARS 2025)&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;</description></item><item><title>End-of-Studies R&amp;D Internship in Computer-Assisted Interventions</title><link>https://jonasx.xyz/p/2024-assisted-surgery-internship/</link><pubDate>Fri, 06 Sep 2024 00:00:00 +0000</pubDate><author>jonas.mht.private@gmail.com (Jonas Mehtali)</author><guid>https://jonasx.xyz/p/2024-assisted-surgery-internship/</guid><description>&lt;img src="https://jonasx.xyz/p/2024-assisted-surgery-internship/JonasMRPlanning.png" alt="Featured image of post End-of-Studies R&amp;D Internship in Computer-Assisted Interventions" /&gt;&lt;h2 id="context-and-objectives"&gt;Context and Objectives
&lt;/h2&gt;&lt;p&gt;This internship, conducted from January 29th to August 8th, 2024, in the IMAGeS research group at the ICube laboratory and the IHU of Strasbourg, focused on advancing Computer-Assisted Intervention (CAI) techniques, particularly in percutaneous cancer treatments such as thermal ablation. The core objective was to research and implement real-time simulations and integrate these into surgical planning tools, using mixed reality (MR) technologies.&lt;/p&gt;
&lt;p&gt;The key innovation of this project lies in its use of networked computing. By offloading computationally intensive tasks to networked servers, we achieved a system capable of interactive planning without burdening the operating room (OR) with extra infrastructure. This networked approach not only optimizes the computational process but also enhances the clinical environment by focusing resources on the surgical interventions themselves.&lt;/p&gt;
&lt;h2 id="achievements-and-contributions"&gt;Achievements and Contributions
&lt;/h2&gt;&lt;ul&gt;
&lt;li&gt;&lt;b&gt;Efficient Simulations:&lt;/b&gt; Leveraging networked computing, I implemented physical simulations that deliver results in under a second for low-resolution outputs and within five seconds for final results. Thus, interactive time planning was achieved.&lt;/li&gt;
&lt;/ul&gt;
&lt;!--
Side by side images
--&gt;
&lt;p&gt;&lt;img src="https://jonasx.xyz/p/2024-assisted-surgery-internship/MultiResolutionSimulation.png"
width="1163"
height="510"
srcset="https://jonasx.xyz/p/2024-assisted-surgery-internship/MultiResolutionSimulation_hu_fa7e07fdb1c61f14.png 480w, https://jonasx.xyz/p/2024-assisted-surgery-internship/MultiResolutionSimulation_hu_b81b1a1fdd3faa04.png 1024w"
loading="lazy"
alt="Multi-Resolution Simulationm"
class="gallery-image"
data-flex-grow="228"
data-flex-basis="547px"
&gt; &lt;img src="https://jonasx.xyz/p/2024-assisted-surgery-internship/SimulationCells.png"
width="687"
height="506"
srcset="https://jonasx.xyz/p/2024-assisted-surgery-internship/SimulationCells_hu_5f3d7dcb4d5cbae1.png 480w, https://jonasx.xyz/p/2024-assisted-surgery-internship/SimulationCells_hu_b25eb8a850bbcc4b.png 1024w"
loading="lazy"
alt="Independent Simulation Cells"
class="gallery-image"
data-flex-grow="135"
data-flex-basis="325px"
&gt;&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;&lt;b&gt;Co-Planning:&lt;/b&gt; The simulation was deployed across multiple devices, connected through a secure Virtual Private Network (VPN). This allows for remote access and collaborative planning, potentially expanding the reach of expert consultations and surgical training.&lt;/li&gt;
&lt;/ul&gt;
&lt;figure&gt;&lt;img src="https://jonasx.xyz/p/2024-assisted-surgery-internship/CoPlanning.png" width="100%"&gt;&lt;figcaption&gt;
&lt;h4&gt;Co-Planning : Three Concurrent Clients&lt;/h4&gt;
&lt;/figcaption&gt;
&lt;/figure&gt;
&lt;ul&gt;
&lt;li&gt;&lt;b&gt;Mixed Reality Integration:&lt;/b&gt; MR tools were integrated to enhance spatial navigation and needle placement during planning. These immersive technologies proved more intuitive than traditional interfaces, offering significant improvements in the planning process.&lt;/li&gt;
&lt;/ul&gt;
&lt;p&gt;&lt;img src="https://jonasx.xyz/p/2024-assisted-surgery-internship/MRMenu.png"
width="1163"
height="510"
srcset="https://jonasx.xyz/p/2024-assisted-surgery-internship/MRMenu_hu_354f41596a61010e.png 480w, https://jonasx.xyz/p/2024-assisted-surgery-internship/MRMenu_hu_761962bb17f96540.png 1024w"
loading="lazy"
alt="MR Interface"
class="gallery-image"
data-flex-grow="228"
data-flex-basis="547px"
&gt;&lt;/p&gt;
&lt;p&gt;&lt;img src="https://jonasx.xyz/p/2024-assisted-surgery-internship/MRHandNeedlePlacement.png"
width="1163"
height="510"
srcset="https://jonasx.xyz/p/2024-assisted-surgery-internship/MRHandNeedlePlacement_hu_bf34dffcd2944e2b.png 480w, https://jonasx.xyz/p/2024-assisted-surgery-internship/MRHandNeedlePlacement_hu_e315b84cb54a1fd3.png 1024w"
loading="lazy"
alt="Hand Manipulation"
class="gallery-image"
data-flex-grow="228"
data-flex-basis="547px"
&gt; &lt;img src="https://jonasx.xyz/p/2024-assisted-surgery-internship/MRControllerNeedlePlacement.png"
width="1163"
height="510"
srcset="https://jonasx.xyz/p/2024-assisted-surgery-internship/MRControllerNeedlePlacement_hu_c3a2a8182fe68736.png 480w, https://jonasx.xyz/p/2024-assisted-surgery-internship/MRControllerNeedlePlacement_hu_d525bb5bebb1809d.png 1024w"
loading="lazy"
alt="Controller Manipulation"
class="gallery-image"
data-flex-grow="228"
data-flex-basis="547px"
&gt;&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;&lt;b&gt;3D Visualization Software:&lt;/b&gt; The system was connected to 3D Slicer and other visualization tools, providing real-time feedback and interaction during surgical planning.&lt;/li&gt;
&lt;/ul&gt;
&lt;figure&gt;&lt;img src="https://jonasx.xyz/p/2024-assisted-surgery-internship/HeatAndColdPropagationHeatSinkEffect.png" width="100%"&gt;&lt;figcaption&gt;
&lt;h4&gt;Heat and Cold Propagation Around Blood Vessels&lt;/h4&gt;
&lt;/figcaption&gt;
&lt;/figure&gt;
&lt;h2 id="challenges-and-solutions"&gt;Challenges and Solutions
&lt;/h2&gt;&lt;ul&gt;
&lt;li&gt;&lt;b&gt;Networked Computing:&lt;/b&gt; Tackling the challenge of connecting diverse machines for efficient computation, I developed a custom networking protocol and implemented compression methods such as the modified Huffman coding. This was a cornerstone of the project, enabling the effective integration of VR/MR technologies and ensuring the system&amp;rsquo;s flexibility for various deployment scenarios.&lt;/li&gt;
&lt;/ul&gt;
&lt;figure&gt;&lt;img src="https://jonasx.xyz/p/2024-assisted-surgery-internship/NetworkTopology.png" width="100%"&gt;&lt;figcaption&gt;
&lt;h4&gt;Network Layout&lt;/h4&gt;
&lt;/figcaption&gt;
&lt;/figure&gt;
&lt;ul&gt;
&lt;li&gt;&lt;b&gt;Software Optimization:&lt;/b&gt; Significant efforts were made to optimize the software for real-time performance. This included parallelization techniques and GPU acceleration to handle large datasets and complex calculations efficiently.&lt;/li&gt;
&lt;/ul&gt;
&lt;h2 id="future-prospects"&gt;Future Prospects
&lt;/h2&gt;&lt;p&gt;This internship laid the groundwork for the upcoming PhD project, which aims to advance multi-needle planning in thermal ablation procedures. Building on the heat propagation simulation and cell death model developed during this internship, the project will focus on optimizing needle placement to improve both the speed, precision and efficiency of these procedures.&lt;/p&gt;
&lt;p&gt;Future research could explore the incorporation of neural networks to achieve real-time planning capabilities and expand the cell death model to include hypothermia-induced cell death, broadening its clinical applicability.&lt;/p&gt;
&lt;h2 id="acknowledgments"&gt;Acknowledgments
&lt;/h2&gt;&lt;p&gt;I would like to express my sincere gratitude to Pr. Caroline Essert, a distinguished researcher in the IMAGeS team at the ICube lab, for her support and guidance throughout this project. I would also like to thank Dr. Juan Verde, Preclinical Research Scientist and Innovation Manager at the IHU of Strasbourg, for his valuable insights into the practical needs of the field.&lt;/p&gt;
&lt;p&gt;This internship marks the beginning of an exciting journey in advancing computer-assisted interventions and improving patient outcomes in thermal ablation procedures.&lt;/p&gt;</description></item><item><title>Airship VR Game</title><link>https://jonasx.xyz/p/2023-project-airship/</link><pubDate>Fri, 01 Dec 2023 00:00:00 +0000</pubDate><author>jonas.mht.private@gmail.com (Jonas Mehtali)</author><guid>https://jonasx.xyz/p/2023-project-airship/</guid><description>&lt;img src="https://jonasx.xyz/p/2023-project-airship/airship-render1.png" alt="Featured image of post Airship VR Game" /&gt;&lt;h2 id="description"&gt;Description
&lt;/h2&gt;&lt;p&gt;I created a VR airship puzzle-survival game using Unity during my last semester at the University of Strasbourg. I wrote the game logic in Unity and created the 3D assets and textures using Blender.
&lt;br&gt;
The player&amp;rsquo;s goal is to repair a sinking airship by solving interactive puzzles by clocking buttons, switching switches and turning handles. The game is designed for the Meta VR headset and uses the handheld controller tracking feature to interact with the environment.
&lt;br&gt;
This project provided me with valuable hands-on experience in Unity game development for VR headsets and project management, which I believe, as for all projects undertaken, will come in handy in my future ventures.&lt;/p&gt;
&lt;h2 id="additional-material"&gt;Additional Material
&lt;/h2&gt;&lt;p&gt;&lt;figure&gt;&lt;img src="https://jonasx.xyz/p/2023-project-airship/airship-render2.png" width="100%"&gt;&lt;figcaption&gt;
&lt;h4&gt;Airship Front&lt;/h4&gt;
&lt;/figcaption&gt;
&lt;/figure&gt;
&lt;figure&gt;&lt;img src="https://jonasx.xyz/p/2023-project-airship/airship-render3.png" width="100%"&gt;&lt;figcaption&gt;
&lt;h4&gt;Airship Back&lt;/h4&gt;
&lt;/figcaption&gt;
&lt;/figure&gt;
&lt;/p&gt;</description></item><item><title>R&amp;D Internship in Computer Assisted Surgery</title><link>https://jonasx.xyz/p/2023-assisted-surgery-internship/</link><pubDate>Wed, 30 Aug 2023 00:00:00 +0000</pubDate><author>jonas.mht.private@gmail.com (Jonas Mehtali)</author><guid>https://jonasx.xyz/p/2023-assisted-surgery-internship/</guid><description>&lt;img src="https://jonasx.xyz/p/2023-assisted-surgery-internship/insertion.jpg" alt="Featured image of post R&amp;D Internship in Computer Assisted Surgery" /&gt;&lt;h2 id="context"&gt;Context
&lt;/h2&gt;&lt;p&gt;As part of my first Master’s year internship, I present to you this in depth post about my 3 month dual internship in Darmstadt, Germany and Strasbourg, France.
&lt;br&gt;
It lasted from the 1st of June to the 1st of September 2023 and was conducted in the MEC-Lab research group in the Computer Science Department at the TU Darmstadt, Germany and in the IMAGeS research group of the ICube laboratory at the University of Strasbourg, France.&lt;/p&gt;
&lt;h2 id="goal-of-the-internship"&gt;Goal of the Internship
&lt;/h2&gt;&lt;p&gt;The goal of the internship was to take over and enhance the CryoTrack project which is a non-invasive surgery assistance tool developed for the 3D Slicer software.
&lt;br&gt;&lt;br&gt;
The primary focus was on synchronizing the surgical procedure with the breathing cycle. This involved the implementation of a breathing tracking tool based on multi-camera marker detection.
Another important part was the streamlining of the 3D Slicer workflow, displaying the optimal areas of entry and correcting the needle orientation during the whole procedure.&lt;/p&gt;
&lt;figure&gt;&lt;img src="https://jonasx.xyz/p/2023-assisted-surgery-internship/ArtificialRespirationMovement.gif" width="50%"&gt;&lt;figcaption&gt;
&lt;h4&gt;Breathing Simulation and Marker Detection&lt;/h4&gt;
&lt;/figcaption&gt;
&lt;/figure&gt;
&lt;p&gt;Throughout the internship, I worked extensively with Python, C++ and the 3D Slicer interface, learning to integrate a client and server for IGTLink communication between the different independent equipment pieces. I tackled challenges related to stereoscopic imaging, image processing, marker detection, synchronization of surgical procedures with breathing cycles and trajectory predictions for accurate needle placement.
&lt;br&gt;&lt;br&gt;
Collaborating with the team, I tested, debugged, and collected data on different algorithm optimizations culminating in a presentation of my progress to the IMAGeS team on the 21st of July 2023.
&lt;br&gt;&lt;br&gt;
The internship involved a deep dive into practical software development for non-invasive surgical guidance, contributing to the field of medical technology and patient care.&lt;/p&gt;
&lt;h2 id="contributions"&gt;Contributions
&lt;/h2&gt;&lt;ul&gt;
&lt;li&gt;Real time visual needle trajectory correction&lt;/li&gt;
&lt;li&gt;Needle entry area estimation and display&lt;/li&gt;
&lt;li&gt;Breathing tracking through multi-camera marker detection&lt;/li&gt;
&lt;li&gt;New interface for the CryoTrack module&lt;/li&gt;
&lt;li&gt;Heavy tool workflow streamlining and automation&lt;/li&gt;
&lt;li&gt;Quick setup and surgery preparation (less than 5 minutes)&lt;/li&gt;
&lt;li&gt;Increased precision and accuracy of needle placement&lt;/li&gt;
&lt;li&gt;Work on an EMT Linux driver&lt;/li&gt;
&lt;/ul&gt;
&lt;h2 id="cryotrack-project"&gt;CryoTrack Project
&lt;/h2&gt;&lt;p&gt;Triptych of the CryoTrack project&lt;/p&gt;
&lt;figure&gt;&lt;img src="https://jonasx.xyz/p/2023-assisted-surgery-internship/triptych.png"&gt;&lt;figcaption&gt;
&lt;h4&gt;CryoTrack Triptych&lt;/h4&gt;
&lt;/figcaption&gt;
&lt;/figure&gt;
&lt;!-- youtube vide--&gt;
&lt;div class="video-wrapper"&gt;
&lt;iframe loading="lazy"
src="https://www.youtube.com/embed/PqUruKKmM0Q"
allowfullscreen
title="YouTube Video"
&gt;
&lt;/iframe&gt;
&lt;/div&gt;
&lt;p&gt;This video has been made to present the state of the project at the end of my internship.
&lt;br&gt;
The goal is to allow for quick pick up of the project by other researchers and to present the project to the public.&lt;/p&gt;
&lt;h2 id="phantom"&gt;Phantom
&lt;/h2&gt;&lt;p&gt;Phantoms play a crucial role in the field of surgery, serving as versatile tools for research, training and quality assurance. These phantoms are specially designed materials that mimic human tissues or structures, enabling surgeons and medical professionals to simulate and practice various surgical procedures before applying them to real patients.&lt;/p&gt;
&lt;!--
Side by side images
--&gt;
&lt;p&gt;&lt;img src="https://jonasx.xyz/p/2023-assisted-surgery-internship/PrintedTorso.jpg"
width="3000"
height="2344"
srcset="https://jonasx.xyz/p/2023-assisted-surgery-internship/PrintedTorso_hu_7dfc4d6588e789c9.jpg 480w, https://jonasx.xyz/p/2023-assisted-surgery-internship/PrintedTorso_hu_6e95fdfef8b8f282.jpg 1024w"
loading="lazy"
alt="Printed torso for the Phantom"
class="gallery-image"
data-flex-grow="127"
data-flex-basis="307px"
&gt; &lt;img src="https://jonasx.xyz/p/2023-assisted-surgery-internship/ScannerImage.jpg"
width="3000"
height="2461"
srcset="https://jonasx.xyz/p/2023-assisted-surgery-internship/ScannerImage_hu_c33ba7e08d1c85d3.jpg 480w, https://jonasx.xyz/p/2023-assisted-surgery-internship/ScannerImage_hu_bd4afd62e1603d0c.jpg 1024w"
loading="lazy"
alt="Scan of the Phantom"
class="gallery-image"
data-flex-grow="121"
data-flex-basis="292px"
&gt;&lt;/p&gt;
&lt;figure&gt;&lt;img src="https://jonasx.xyz/p/2023-assisted-surgery-internship/traditional_planning.jpeg" width="100%"&gt;&lt;figcaption&gt;
&lt;h4&gt;Phantom Before OP&lt;/h4&gt;
&lt;/figcaption&gt;
&lt;/figure&gt;
&lt;h3 id="role-in-the-project"&gt;Role in the project
&lt;/h3&gt;&lt;p&gt;For our tests we used a phantom of a torso at 1/2 of the scale of a grown man. We used agar-agar gel to simulate the patient&amp;rsquo;s tissue. We chose agar-agar for its material properties that closely resemble the ones of human tissue and is well suited for doing magnetic resonance imaging (MRI). Agar-agar is long lasting, can be melted and re-mold and is transparent, allowing us to see inside of the phantom and do a preliminary evaluation of the efficiency of our solution.
The thoracic cage was printed using a flexible printing material called Z-Flex, the choice of this material is motivated by the need to simulate respiration and thus to deform the printed skeleton.
Within the gel matrix we suspended risk structures such as a rigid printed trachea and rigid printed target beads of differing color.&lt;/p&gt;
&lt;h2 id="insertion-feasibility-map"&gt;Insertion Feasibility Map
&lt;/h2&gt;&lt;p&gt;The insertion feasibility map is a feature that allows the user to visualize the optimal entry areas for the needle placement.
&lt;br&gt;
The optimal entry areas are where the points of entry minimize the risk of damaging vital organs and structures.
&lt;br&gt;
The optimal entry areas are calculated using the patient&amp;rsquo;s scan and the target position.
&lt;br&gt;
These areas are displayed as a 3D colored map on the skin of the patient&amp;rsquo;s model.&lt;/p&gt;
&lt;!-- Image --&gt;
&lt;figure&gt;&lt;img src="https://jonasx.xyz/p/2023-assisted-surgery-internship/insertion_feasibility_map.png" width="50%"&gt;&lt;figcaption&gt;
&lt;h4&gt;Needle Entry Area Estimation&lt;/h4&gt;
&lt;/figcaption&gt;
&lt;/figure&gt;
&lt;h2 id="real-time-needle-trajectory-correction"&gt;Real Time Needle Trajectory Correction
&lt;/h2&gt;&lt;p&gt;The hard part of real time needle correction by only using a 3D visualization is to find an intuitive way to display the correction to the user. The user needs to be able to understand the correction and to be able to apply it to the needle placement and orientation.&lt;/p&gt;
&lt;h3 id="targeting-ring"&gt;Targeting ring
&lt;/h3&gt;&lt;p&gt;The most intuitive solution I found was to represent the correction as a targeting ring with a sphere. The ring is displayed around the needle tip and the sphere is displayed on its edge in the opposite direction of the correction.
&lt;br&gt;&lt;br&gt;
The ring is displayed in the 3D view and is always oriented towards the target.
The sphere is the direct projection of the needle end on the ring plane.
The ring&amp;rsquo;s radius is the distance between the needle tip and the projection sphere.
&lt;br&gt;&lt;br&gt;
The user can then use the ring to correct the needle placement and orientation by placing the projection sphere in the middle of the ring, thereby closing the ring.
&lt;br&gt;
When the ring is closed the needle is aligned with the trajectory of the needle tip to the target.
&lt;br&gt;&lt;br&gt;
Adding to that there is a color code to the ring.
It lights up is green when the needle is aligned with the trajectory, yellow when the needle is closely aligned and red otherwise.
&lt;br&gt;
In the case the needle is facing away from the target at an angle greater that 90° between the needle end, its tip and the target, the ring goes gray.&lt;/p&gt;
&lt;div class="video-wrapper"&gt;
&lt;iframe loading="lazy"
src="https://www.youtube.com/embed/MkQSP9pbXxY"
allowfullscreen
title="YouTube Video"
&gt;
&lt;/iframe&gt;
&lt;/div&gt;
&lt;p&gt;&lt;img src="https://jonasx.xyz/p/2023-assisted-surgery-internship/TargetingRingRed.png"
width="600"
height="571"
srcset="https://jonasx.xyz/p/2023-assisted-surgery-internship/TargetingRingRed_hu_8cb95bdd8dc19955.png 480w, https://jonasx.xyz/p/2023-assisted-surgery-internship/TargetingRingRed_hu_a6fb8e73fc53b720.png 1024w"
loading="lazy"
alt="Red Targeting Ring : Incorrect Trajectory"
class="gallery-image"
data-flex-grow="105"
data-flex-basis="252px"
&gt; &lt;img src="https://jonasx.xyz/p/2023-assisted-surgery-internship/TargetingRingGreen.png"
width="600"
height="571"
srcset="https://jonasx.xyz/p/2023-assisted-surgery-internship/TargetingRingGreen_hu_cbb5b072cac19a6d.png 480w, https://jonasx.xyz/p/2023-assisted-surgery-internship/TargetingRingGreen_hu_79752be6d254259a.png 1024w"
loading="lazy"
alt="Green Targeting Ring : Correct Trajectory"
class="gallery-image"
data-flex-grow="105"
data-flex-basis="252px"
&gt;&lt;/p&gt;
&lt;h2 id="studies-at-the-chu-of-strasbourg"&gt;Studies at the CHU of Strasbourg
&lt;/h2&gt;&lt;p&gt;The CryoTrack project was tested at the CHU of Strasbourg on a phantom.
We collected data on the efficiency of the solution and the time saved by the surgeon during the procedure in the light of a coming publication.&lt;/p&gt;
&lt;figure&gt;&lt;img src="https://jonasx.xyz/p/2023-assisted-surgery-internship/OR_setup_labelled.png"&gt;&lt;figcaption&gt;
&lt;h4&gt;OR Setup&lt;/h4&gt;
&lt;/figcaption&gt;
&lt;/figure&gt;
&lt;ol&gt;
&lt;li&gt;Computer running the software&lt;/li&gt;
&lt;li&gt;Screen for the surgeon&lt;/li&gt;
&lt;li&gt;Phantom&lt;/li&gt;
&lt;li&gt;Electromagnetic tracking system&lt;/li&gt;
&lt;/ol&gt;
&lt;h2 id="acknowledgements"&gt;Acknowledgements
&lt;/h2&gt;&lt;p&gt;Firstly, I wish to extend my gratitude to Pr. Caroline Essert, a distinguished researcher in the IMAGeS team at the ICube lab and professor at the University of Strasbourg.
Her unwavering support and expert guidance were instrumental in my successful completion of this internship.
&lt;br&gt;&lt;br&gt;
Additionally, I’d wish to thank Henry J. Krumb, a dedicated doctoral student in the MEC-Lab team and an associate professor at TU Darmstadt. Henry played a crucial role in acquainting me with the project during its initial phase and continued to provide invaluable assistance and contributions throughout the entirety of my internship.
&lt;br&gt;&lt;br&gt;
I am grateful to have had the opportunity to make meaningful contributions to the CryoTrack project.&lt;/p&gt;
&lt;h2 id="supplementary-material"&gt;Supplementary Material
&lt;/h2&gt;&lt;!--Image gallery--&gt;
&lt;figure&gt;&lt;img src="https://jonasx.xyz/p/2023-assisted-surgery-internship/planning_model.png" width="50%"&gt;&lt;figcaption&gt;
&lt;h4&gt;3D Model : Phantom with Tumors&lt;/h4&gt;
&lt;/figcaption&gt;
&lt;/figure&gt;
&lt;figure&gt;&lt;img src="https://jonasx.xyz/p/2023-assisted-surgery-internship/Ziehm%20Vision%20RFD%203D%20X-Ray.jpg" width="50%"&gt;&lt;figcaption&gt;
&lt;h4&gt;Phantom X-Ray Scan&lt;/h4&gt;
&lt;/figcaption&gt;
&lt;/figure&gt;
&lt;figure&gt;&lt;img src="https://jonasx.xyz/p/2023-assisted-surgery-internship/Ziehm%20Vision%20RFD%203D.jpg" width="50%"&gt;&lt;figcaption&gt;
&lt;h4&gt;Phantom X-Ray Visualization&lt;/h4&gt;
&lt;/figcaption&gt;
&lt;/figure&gt;</description></item><item><title>Endorsement from Daniel Fernandez-Lanvin</title><link>https://jonasx.xyz/p/endorsement-daniel-fernandez-lanvin/</link><pubDate>Mon, 30 Jan 2023 00:00:00 +0000</pubDate><author>jonas.mht.private@gmail.com (Jonas Mehtali)</author><guid>https://jonasx.xyz/p/endorsement-daniel-fernandez-lanvin/</guid><description>&lt;img src="https://jonasx.xyz/p/endorsement-daniel-fernandez-lanvin/oviedo-spain-esquela.jpg" alt="Featured image of post Endorsement from Daniel Fernandez-Lanvin" /&gt;&lt;h2 id="introduction"&gt;Introduction
&lt;/h2&gt;&lt;p&gt;As you may know, I participated in a research camp project at the University of Oviedo during the summer of 2022. Daniel was my tutor during this program, and his guidance and support were invaluable.&lt;/p&gt;
&lt;p&gt;During the research camp, I worked on a full-scale research project with a local student, and we co-wrote and published a research paper that you can find &lt;a class="link" href="https://jonasx.xyz/p/2022-research-internship/" title="Research Internship in Computer Science"
&gt;here&lt;/a&gt;. This experience was an incredible opportunity for me to develop my research skills, learn how to work in a team, and improve my communication and collaboration skills.&lt;/p&gt;
&lt;p&gt;Throughout the program, Daniel provided me with feedback, helped me refine my research skills, and guided me as I analyzed the data we collected. I am grateful for the time he spent tutoring me.&lt;/p&gt;
&lt;h2 id="endorsement"&gt;Endorsement
&lt;/h2&gt;&lt;p&gt;&lt;figure&gt;&lt;img src="https://jonasx.xyz/p/endorsement-daniel-fernandez-lanvin/Daniel%20F.%20Lanvin%20Redacted%20First.jpg"&gt;&lt;figcaption&gt;
&lt;h4&gt;Daniel Fernandez-Lanvin endorsement letter, first page&lt;/h4&gt;
&lt;/figcaption&gt;
&lt;/figure&gt;
&lt;figure&gt;&lt;img src="https://jonasx.xyz/p/endorsement-daniel-fernandez-lanvin/Daniel%20F.%20Lanvin%20Redacted%20Second.jpg"&gt;&lt;figcaption&gt;
&lt;h4&gt;Daniel Fernandez-Lanvin endorsement letter, second page&lt;/h4&gt;
&lt;/figcaption&gt;
&lt;/figure&gt;
&lt;/p&gt;</description></item><item><title>Endorsement from Franck Hétroy-Wheeler</title><link>https://jonasx.xyz/p/endorsement-frank-hetroy-wheeler/</link><pubDate>Fri, 20 Jan 2023 00:00:00 +0000</pubDate><author>jonas.mht.private@gmail.com (Jonas Mehtali)</author><guid>https://jonasx.xyz/p/endorsement-frank-hetroy-wheeler/</guid><description>&lt;img src="https://jonasx.xyz/p/endorsement-frank-hetroy-wheeler/pole-api.png" alt="Featured image of post Endorsement from Franck Hétroy-Wheeler" /&gt;&lt;h2 id="introduction"&gt;Introduction
&lt;/h2&gt;&lt;p&gt;I would like to thank Professor Franck Hétroy-Wheeler for his support and guidance during my Bachelor studies.
I have known him since I started my studies in Computer Science at the University of Strasbourg back in 2019, where he coordinates the Cursus Master Ingénierie (CMI) program, where I was enrolled.
He wrote a letter of recommendation for me, which I am happy to share with you.&lt;/p&gt;
&lt;h2 id="endorsement"&gt;Endorsement
&lt;/h2&gt;&lt;figure&gt;&lt;img src="https://jonasx.xyz/p/endorsement-frank-hetroy-wheeler/Franck%20H%C3%A9troy-Wheeler%20Redacted.jpg"&gt;&lt;figcaption&gt;
&lt;h4&gt;Franck Hétroy-Wheeler endorsement letter&lt;/h4&gt;
&lt;/figcaption&gt;
&lt;/figure&gt;</description></item><item><title>Caterer</title><link>https://jonasx.xyz/p/2022-caterer/</link><pubDate>Mon, 01 Aug 2022 00:00:00 +0000</pubDate><author>jonas.mht.private@gmail.com (Jonas Mehtali)</author><guid>https://jonasx.xyz/p/2022-caterer/</guid><description>&lt;img src="https://jonasx.xyz/p/2022-caterer/cake.jpg" alt="Featured image of post Caterer" /&gt;&lt;h2 id="description"&gt;Description
&lt;/h2&gt;&lt;p&gt;Back in 2022, I was enrolled as a caterer for two consecutive years at the University of Strasbourg&amp;rsquo;s Service de la Vie Universitaire (SVU).
&lt;figure&gt;&lt;img src="https://jonasx.xyz/p/2022-caterer/alumni.jpg"&gt;&lt;figcaption&gt;
&lt;h4&gt;Alumni event&lt;/h4&gt;
&lt;/figcaption&gt;
&lt;/figure&gt;
&lt;/p&gt;
&lt;h2 id="mission"&gt;Mission
&lt;/h2&gt;&lt;p&gt;I was responsible for coordinating with my colleagues in the catering department to set up buffets, welcome guests, and ensure the smooth execution of events.&lt;/p&gt;
&lt;figure&gt;&lt;img src="https://jonasx.xyz/p/2022-caterer/rentree.jpg"&gt;&lt;figcaption&gt;
&lt;h4&gt;University employee event&lt;/h4&gt;
&lt;/figcaption&gt;
&lt;/figure&gt;
&lt;h2 id="conclusion"&gt;Conclusion
&lt;/h2&gt;&lt;p&gt;This experience allowed me to discover catering and to develop my skills in attention to detail, guest relations and communication.&lt;/p&gt;</description></item><item><title>Research Internship in Computer Science</title><link>https://jonasx.xyz/p/2022-research-internship/</link><pubDate>Mon, 25 Jul 2022 00:00:00 +0000</pubDate><author>jonas.mht.private@gmail.com (Jonas Mehtali)</author><guid>https://jonasx.xyz/p/2022-research-internship/</guid><description>&lt;img src="https://jonasx.xyz/p/2022-research-internship/presentation.png" alt="Featured image of post Research Internship in Computer Science" /&gt;&lt;h2 id="description"&gt;Description
&lt;/h2&gt;&lt;p&gt;During the Summer of 2022, I participated in a Research Camp project at the University of Oviedo, Spain, where I conducted a full-scale research project and co-wrote and published a research paper with a local student titled &amp;ldquo;&lt;a class="link" href="https://peerj.com/articles/cs-1139/" target="_blank" rel="noopener"
&gt;How does serif vs sans serif typeface impact the usability of e-commerce websites?&lt;/a&gt;&amp;rdquo;.&lt;/p&gt;
&lt;h2 id="mission"&gt;Mission
&lt;/h2&gt;&lt;p&gt;The goal of this internship was to participate in the development of a research project, understand all the typical phases of this kind of undertaking (study of the background, hypothesis development, experiment design and implementation, analysis, etc.) and participate in at least a part of them, including the dissemination that consists of the development of a poster and a research paper.&lt;/p&gt;
&lt;h2 id="posts"&gt;Posts
&lt;/h2&gt;&lt;figure&gt;&lt;img src="https://jonasx.xyz/p/2022-research-internship/oviedo-spain-diploma.png"&gt;&lt;figcaption&gt;
&lt;h4&gt;Diploma Ceremony&lt;/h4&gt;
&lt;/figcaption&gt;
&lt;/figure&gt;
&lt;iframe src="https://www.facebook.com/plugins/post.php?href=https%3A%2F%2Fwww.facebook.com%2FREUOviedo%2Fposts%2Fpfbid02ZUhia6rwrUsaKSKqhCRykvCu3JsbPKN5WCB9cJZPxHdvAyPgeJpJRH13jWJUXDF7l&amp;width=500&amp;show_text=true&amp;height=785&amp;appId" width="500" height="785" style="border:none;overflow:hidden" scrolling="no" frameborder="0" allowfullscreen="true" allow="autoplay; clipboard-write; encrypted-media; picture-in-picture; web-share"&gt;&lt;/iframe&gt;
&lt;h2 id="conclusion"&gt;Conclusion
&lt;/h2&gt;&lt;p&gt;I had the opportunity to discover Oviedo and the region of Asturias during my free time with my
coworkers. I worked in a multicultural environment and learned a lot about the different cultures of my colleagues.
&lt;br&gt;&lt;br&gt;
I also had a truly immersive experience in the shoes of a researcher and could complete a full research project in only two months. I participated in the creation of a poster and in the writing of a paper which was new to me.
&lt;br&gt;&lt;br&gt;
This experience allowed me to develop my research skills, work in a team, and improved my communication and collaboration skills.&lt;/p&gt;</description></item><item><title>Project Notre Dame</title><link>https://jonasx.xyz/p/project-notre-dame/</link><pubDate>Thu, 10 Mar 2022 00:00:00 +0000</pubDate><author>jonas.mht.private@gmail.com (Jonas Mehtali)</author><guid>https://jonasx.xyz/p/project-notre-dame/</guid><description>&lt;img src="https://jonasx.xyz/p/project-notre-dame/ensemble-2.png" alt="Featured image of post Project Notre Dame" /&gt;&lt;h2 id="description"&gt;Description
&lt;/h2&gt;&lt;p&gt;During a six-month long project, I led a 3D team of three students to create all the 3D assets and visuals for an artistic and cultural mediation app for the Musée Notre Dame de Strasbourg.&lt;/p&gt;
&lt;h2 id="mission"&gt;Mission
&lt;/h2&gt;&lt;p&gt;The goal of this project was to create 3D models of a painting displayed in the Musée Notre Dame de Strasbourg.
&lt;br&gt;
The 3D models were then used to create a mobile application that would allow visitors to discover the painting and its history in a new way.&lt;/p&gt;
&lt;h2 id="videos"&gt;Videos
&lt;/h2&gt;&lt;h3 id="sample-of-3d-models"&gt;Sample of 3D models
&lt;/h3&gt;&lt;div class="video-wrapper"&gt;
&lt;iframe loading="lazy"
src="https://www.youtube.com/embed/hMwaHPiG-eM"
allowfullscreen
title="YouTube Video"
&gt;
&lt;/iframe&gt;
&lt;/div&gt;
&lt;h3 id="tutorial-french"&gt;Tutorial (French)
&lt;/h3&gt;&lt;div class="video-wrapper"&gt;
&lt;iframe loading="lazy"
src="https://www.youtube.com/embed/7xpeSMMu8_I"
allowfullscreen
title="YouTube Video"
&gt;
&lt;/iframe&gt;
&lt;/div&gt;
&lt;p&gt;I recorded a tutorial in French to explain how I created the 3D models of the painting.
&lt;br&gt;
Its purpose was to help the other members of the team to create their own 3D models.&lt;/p&gt;
&lt;h3 id="compilation-of-all-the-3d-models"&gt;Compilation of all the 3D models
&lt;/h3&gt;&lt;div class="video-wrapper"&gt;
&lt;iframe loading="lazy"
src="https://www.youtube.com/embed/mtQCm5erVaw"
allowfullscreen
title="YouTube Video"
&gt;
&lt;/iframe&gt;
&lt;/div&gt;
&lt;h2 id="images"&gt;Images
&lt;/h2&gt;&lt;p&gt;&lt;figure&gt;&lt;img src="https://jonasx.xyz/p/project-notre-dame/musee.jpg"&gt;&lt;figcaption&gt;
&lt;h4&gt;Exposition at the Museum&lt;/h4&gt;
&lt;/figcaption&gt;
&lt;/figure&gt;
&lt;figure&gt;&lt;img src="https://jonasx.xyz/p/project-notre-dame/scene-render.png"&gt;&lt;figcaption&gt;
&lt;h4&gt;Full Scene Render&lt;/h4&gt;
&lt;/figcaption&gt;
&lt;/figure&gt;
&lt;/p&gt;
&lt;h2 id="conclusion"&gt;Conclusion
&lt;/h2&gt;&lt;p&gt;All along this project I develop my leadership and technical skills, as well as the ability to work in a collaborative environment.
&lt;br&gt;
It was a challenging and rewarding experience that allowed me to acquire valuable skills and knowledge for my future projects.&lt;/p&gt;
&lt;blockquote&gt;
&lt;p&gt;Image rendered for the &lt;a class="link" href="https://jonasx.xyz/p/project-notre-dame/" title="Projet Notre Dame"
&gt;Projet Notre Dame&lt;/a&gt;&lt;/p&gt;
&lt;/blockquote&gt;</description></item><item><title>Nacht Der Teddybären</title><link>https://jonasx.xyz/p/project-nacht-der-teddyb%C3%A4ren/</link><pubDate>Tue, 07 Dec 2021 00:00:00 +0000</pubDate><author>jonas.mht.private@gmail.com (Jonas Mehtali)</author><guid>https://jonasx.xyz/p/project-nacht-der-teddyb%C3%A4ren/</guid><description>&lt;img src="https://jonasx.xyz/p/project-nacht-der-teddyb%C3%A4ren/nacht-der-teddyb%C3%A4ren.jpg" alt="Featured image of post Nacht Der Teddybären" /&gt;&lt;h2 id="description"&gt;Description
&lt;/h2&gt;&lt;p&gt;As part of a two-student team, I created a Teddy-Zombie survival game using Unity within a four-month timeframe. My responsibilities for the project included working on the AI, 3D asset modeling and texturing using Blender, fire control, enemy spawner, and wave system. This project provided me with valuable hands-on experience in Unity game development and project management, which I believe will come in handy in my future ventures.&lt;/p&gt;
&lt;h2 id="videos"&gt;Videos
&lt;/h2&gt;&lt;h3 id="full-gameplay"&gt;Full gameplay
&lt;/h3&gt;&lt;div class="video-wrapper"&gt;
&lt;iframe loading="lazy"
src="https://www.youtube.com/embed/NNKAQUaYZ7k"
allowfullscreen
title="YouTube Video"
&gt;
&lt;/iframe&gt;
&lt;/div&gt;
&lt;h3 id="blender-animations"&gt;Blender animations
&lt;/h3&gt;&lt;div class="video-wrapper"&gt;
&lt;iframe loading="lazy"
src="https://www.youtube.com/embed/nyvyek3WAS0"
allowfullscreen
title="YouTube Video"
&gt;
&lt;/iframe&gt;
&lt;/div&gt;
&lt;h3 id="how-waves-are-managed"&gt;How waves are managed
&lt;/h3&gt;&lt;div class="video-wrapper"&gt;
&lt;iframe loading="lazy"
src="https://www.youtube.com/embed/WPh75-kgGAw"
allowfullscreen
title="YouTube Video"
&gt;
&lt;/iframe&gt;
&lt;/div&gt;
&lt;blockquote&gt;
&lt;p&gt;Videos filmed for the &lt;a class="link" href="https://jonasx.xyz/p/project-nacht-der-teddyb%C3%A4ren/" title="Nacht Der Teddybären"
&gt;Nacht Der Teddybären&lt;/a&gt; project&lt;/p&gt;
&lt;/blockquote&gt;</description></item><item><title>Store Associate</title><link>https://jonasx.xyz/p/2021-store-associate/</link><pubDate>Sat, 01 May 2021 00:00:00 +0000</pubDate><author>jonas.mht.private@gmail.com (Jonas Mehtali)</author><guid>https://jonasx.xyz/p/2021-store-associate/</guid><description>&lt;img src="https://jonasx.xyz/p/2021-store-associate/bread.jpg" alt="Featured image of post Store Associate" /&gt;&lt;h2 id="description"&gt;Description
&lt;/h2&gt;&lt;p&gt;Back in 2021, I was enrolled as a store associate in a convenient store for one year.
&lt;br&gt;
I was working part-time on weekends and during the holidays at the local convenient store of my hometown.&lt;/p&gt;
&lt;h2 id="mission"&gt;Mission
&lt;/h2&gt;&lt;p&gt;I was responsible for sales, stock management, supply trips, accounting, and order
preparation.
&lt;br&gt;
I had to perform all these tasks simultaneously and efficiently as I was the only employee in the store during my shifts.&lt;/p&gt;
&lt;h2 id="conclusion"&gt;Conclusion
&lt;/h2&gt;&lt;p&gt;This experience allowed me to discover work as a store associate and to develop my skills in planning, accounting and punctuality.&lt;/p&gt;</description></item><item><title>Landslide Monitoring Project</title><link>https://jonasx.xyz/p/2020-landslide-monitoring/</link><pubDate>Mon, 15 Jun 2020 00:00:00 +0000</pubDate><author>jonas.mht.private@gmail.com (Jonas Mehtali)</author><guid>https://jonasx.xyz/p/2020-landslide-monitoring/</guid><description>&lt;img src="https://jonasx.xyz/p/2020-landslide-monitoring/la-valette.png" alt="Featured image of post Landslide Monitoring Project" /&gt;&lt;h2 id="description"&gt;Description
&lt;/h2&gt;&lt;p&gt;During the summer of 2020 I did an internship at EOST, Strasbourg, during which I developed a data-analysis tool using Python and the Matplotlib library. This tool analyses data that was sampled on landslide regions and generates statistics and graphs that facilitate the surveillance of these areas.&lt;/p&gt;
&lt;h2 id="screenshots"&gt;Screenshots
&lt;/h2&gt;&lt;figure&gt;&lt;img src="https://jonasx.xyz/p/2020-landslide-monitoring/gka-fms-interface.png"&gt;&lt;figcaption&gt;
&lt;h4&gt;Tool Interface&lt;/h4&gt;
&lt;/figcaption&gt;
&lt;/figure&gt;
&lt;figure&gt;&lt;img src="https://jonasx.xyz/p/2020-landslide-monitoring/east-prism-plot-avrg-pos11012019-02292020.png"&gt;&lt;figcaption&gt;
&lt;h4&gt;Data Plot&lt;/h4&gt;
&lt;/figcaption&gt;
&lt;/figure&gt;
&lt;blockquote&gt;
&lt;p&gt;Image of a prism, tacheometer and La Valette taken by Gilbert Ferhat, researcher at &lt;a class="link" href="http://www.insa-strasbourg.fr/fr/gilbert-ferhat/" target="_blank" rel="noopener"
&gt;INSA&lt;/a&gt;&lt;/p&gt;
&lt;/blockquote&gt;</description></item><item><title>Public Servant</title><link>https://jonasx.xyz/p/2020-public-servant-niffer/</link><pubDate>Wed, 01 Apr 2020 00:00:00 +0000</pubDate><author>jonas.mht.private@gmail.com (Jonas Mehtali)</author><guid>https://jonasx.xyz/p/2020-public-servant-niffer/</guid><description>&lt;img src="https://jonasx.xyz/p/2020-public-servant-niffer/tracteur-niffer.jpg" alt="Featured image of post Public Servant" /&gt;&lt;h2 id="description"&gt;Description
&lt;/h2&gt;&lt;p&gt;Back in 2020, I was enrolled as a public servant in my hometown of Niffer for two consecutive years.
&lt;br&gt;
I was in charge of the surveillance of the recycling center, the maintenance of green spaces and the hauling and escorting of equipment.
&lt;br&gt;&lt;/p&gt;
&lt;h2 id="missions"&gt;Missions
&lt;/h2&gt;&lt;h3 id="recycling-center--surveillance-and-maintenance"&gt;Recycling Center : Surveillance and Maintenance
&lt;/h3&gt;&lt;p&gt;This mission consisted of receiving the users, keeping an eye out for proper sorting of the waste and maintaining the recycling center.&lt;/p&gt;
&lt;figure&gt;&lt;img src="https://jonasx.xyz/p/2020-public-servant-niffer/recycling-center.jpg"&gt;&lt;figcaption&gt;
&lt;h4&gt;Recycling center&lt;/h4&gt;
&lt;/figcaption&gt;
&lt;/figure&gt;
&lt;h3 id="maintenance-of-green-spaces"&gt;Maintenance of Green Spaces
&lt;/h3&gt;&lt;p&gt;On a daily basis, I was in charge of mowing the lawns, weeding the flower beds and watering the plants in various locations of the municipality.&lt;/p&gt;
&lt;figure&gt;&lt;img src="https://jonasx.xyz/p/2020-public-servant-niffer/mower.jpg"&gt;&lt;figcaption&gt;
&lt;h4&gt;Mowing the football field&lt;/h4&gt;
&lt;/figcaption&gt;
&lt;/figure&gt;
&lt;h3 id="hauling-and-escorting-equipment"&gt;Hauling and Escorting Equipment
&lt;/h3&gt;&lt;p&gt;I would drive various vehicles such as a tractor and a van for the purpose of hauling equipment on site and escorting large heavy-duty vehicles.&lt;/p&gt;
&lt;figure&gt;&lt;img src="https://jonasx.xyz/p/2020-public-servant-niffer/escort.jpg"&gt;&lt;figcaption&gt;
&lt;h4&gt;Escorting a tractor&lt;/h4&gt;
&lt;/figcaption&gt;
&lt;/figure&gt;
&lt;h2 id="conclusion"&gt;Conclusion
&lt;/h2&gt;&lt;p&gt;This experience allowed me to discover work as a public servant and to develop my skills in the field of teamwork, planning and versatile equipment use.&lt;/p&gt;</description></item><item><title>Sensha</title><link>https://jonasx.xyz/p/sensha/</link><pubDate>Wed, 01 May 2019 00:00:00 +0000</pubDate><author>jonas.mht.private@gmail.com (Jonas Mehtali)</author><guid>https://jonasx.xyz/p/sensha/</guid><description>&lt;img src="https://jonasx.xyz/p/sensha/title.png" alt="Featured image of post Sensha" /&gt;&lt;h2 id="gameplay-videos"&gt;Gameplay Videos
&lt;/h2&gt;&lt;p&gt;&lt;div class="video-wrapper"&gt;
&lt;iframe loading="lazy"
src="https://www.youtube.com/embed/iHjbx_x7N88"
allowfullscreen
title="YouTube Video"
&gt;
&lt;/iframe&gt;
&lt;/div&gt;
&lt;div class="video-wrapper"&gt;
&lt;iframe loading="lazy"
src="https://www.youtube.com/embed/NNkgKb7eu5s"
allowfullscreen
title="YouTube Video"
&gt;
&lt;/iframe&gt;
&lt;/div&gt;
&lt;/p&gt;
&lt;h2 id="introduction"&gt;Introduction
&lt;/h2&gt;&lt;p&gt;In Japanese, &amp;ldquo;Sensha&amp;rdquo; means &amp;ldquo;tank&amp;rdquo;, an armored vehicle used in combat. The tank has become a symbol of power and stability and has made its way into comics, movies, television, and video games. In strategy games like &amp;ldquo;Arma,&amp;rdquo; &amp;ldquo;Battlefield,&amp;rdquo; and &amp;ldquo;Supreme Commander,&amp;rdquo; tanks are slow, cumbersome, and expensive, but they provide a significant strategic advantage if placed and used correctly on the battlefield.&lt;/p&gt;
&lt;p&gt;Inspired by these strategic placements and investments, I created Sensha, a real-time game that allows the player to become a master strategist in modern battlefields. The game challenges players to make difficult decisions, invest limited resources, and place different tanks strategically to ensure a decisive victory.&lt;/p&gt;
&lt;h2 id="the-project"&gt;The Project
&lt;/h2&gt;&lt;p&gt;I was tasked with creating a program in Python (possibly with libraries) for the Informatique et Sciences Numérique exam of the Baccalauréat 2019. The project had to be limited to 2D visualization and not be too ambitious or time-consuming to complete. The finished program had to be functional and have few or no bugs.&lt;/p&gt;
&lt;h3 id="product-objective"&gt;Product Objective
&lt;/h3&gt;&lt;p&gt;The goal of this project is to allow us as young developers to discover the different stages of creating a program in Python and to be challenged by formative problems. I wanted the product to be entertaining, placing the player in an imaginative and immersive setting, which they control. The aim is to encourage players to think about their actions as every decision made in Sensha can have positive or negative repercussions on the game&amp;rsquo;s progression. Ultimately, the product aims to stand out from others through its original content, thus avoiding any trouble with intellectual property.&lt;/p&gt;
&lt;h3 id="product-proposal"&gt;Product Proposal
&lt;/h3&gt;&lt;p&gt;Every project begins with an initial idea. My initial idea was to create a &amp;ldquo;Brick Breaker,&amp;rdquo; but this project did not seem ambitious enough. That&amp;rsquo;s why I proposed developing a strategy game in the style of our childhood games like &amp;ldquo;Castle Attack&amp;rdquo;; &amp;ldquo;Heavy Mach Defense&amp;rdquo; or &amp;ldquo;Age of War&amp;rdquo;. This game must combine strategy and management elements in the style of large RTS (Real-Time Strategy) games. The subject of the game is the tank, around which all strategic issues revolve.&lt;/p&gt;
&lt;h2 id="game-original-content"&gt;Game Original Content
&lt;/h2&gt;&lt;figure&gt;&lt;img src="https://jonasx.xyz/p/sensha/all-obj.png"&gt;&lt;figcaption&gt;
&lt;h4&gt;Game Sprites&lt;/h4&gt;
&lt;/figcaption&gt;
&lt;/figure&gt;</description></item></channel></rss>