Open-source engineering, computer vision, and AI product experiments.

From non-linear aircraft trajectory optimization and open-source sports vision frameworks like PadelKit, to real-time 3D web avatars and visual accessibility software.

Open Source & Core Engineering

  • PK

    PadelKit

    Open-source AI video analytics library for padel. Implements projective court calibration (homography), multi-object player & ball tracking, pose estimation, and tactical motion metrics.

    Python · PyTorch · OpenCV · Multi-Object Tracking

    github.com/fidelechevarria

  • OA

    OptimAir — Aircraft Trajectory Optimization

    Nonlinear optimal control and 6-DOF trajectory estimation tool for the Red Bull Air Race World Championship using quaternion kinematics, direct collocation (falcon.m / Ipopt), and FlightGear 3D visualization.

    MATLAB · C++ · Ipopt · FlightGear · Optimal Control

    Read technical case study

AI, 3D Graphics & Product Archive (2021–2025)

Full-stack applications and computer vision products designed and shipped end-to-end as an independent maker. Currently being transitioned into self-contained static interactive showcases.

  • LM

    Lima — Intelligent HCI

    Desktop accessibility software enabling hands-free mouse cursor and keyboard control via real-time webcam head-pose estimation, facial landmark tracking, and voice commands.

    Computer Vision · Facial Landmarks · Windows Store

    Article & Microsoft Store

  • CT

    Chattier

    Multilingual conversational 3D avatars with real-time neural speech synthesis, blendshape & viseme facial animation, and physically based WebGL rendering.

    Three.js · Google Filament · WebGL · Blendshapes · LLMs

    Architecture & Demo Showcase

  • PP

    PlotPink

    High-performance interactive engineering data visualization and telemetry plotting environment designed for rapid inspection of large time-series datasets.

    TypeScript · React · WebGL / Canvas · Data Analytics

    Interactive Showcase

  • PX

    Padelamix

    End-to-end automated padel match video analysis platform and tournament management suite that served as the product precursor to the open-source PadelKit engine.

    Computer Vision · React · Serverless GPU · Video Pipeline

    Product Archive

  • SP

    Showprogress & Hairstyle View

    AI-driven developer workflow automation tools and generative computer vision visualizers built during my independent micro-SaaS exploration.

    Generative AI · TypeScript · Full-Stack Prototyping

    Product Archive