SANDOVAL, CARLOS DAVIDSANDOVAL,CARLOSDAVID

A super-resolution application for agricultural satellite imagery. It trains and compares deep learning models (ESPCN, SwinIR and GAN) on 10 m Sentinel-2 images and evaluates the results with agricultural indices such as NDVI. It includes a command-line pipeline and a web application with an API and maps.

It was the most challenging project. The idea came from NVIDIA's DLSS, in its first versions, which used AI to reconstruct low-resolution images in video games. I asked myself how to take that to something that wasn't a game, and I landed on agriculture: letting a farmer enhance free Sentinel-2 images with neural networks instead of paying for commercial high-resolution imagery.

A photorealistic path tracer built from scratch in Python that simulates the physics of light to render the classic Cornell Box. It supports glass, metal and diffuse materials, depth of field, soft shadows and 3D models with tens of thousands of triangles (such as the Stanford Bunny), accelerated with a BVH structure and parallel rendering.

The idea came from wanting to understand how path tracing works in video games: the math that makes it work and the logic capable of simulating the real environment we live in. And from confirming that everything can be explained with math.

An app to share files between devices over the local network: phone to phone, phone to computer and vice versa, with no internet and no account. It runs on a computer (web or desktop app) or on a phone, and devices connect with a QR code or by discovering the server automatically, to browse, upload, download, preview and transfer files directly to each other with end-to-end encryption. It is two repositories: the web and desktop server, and the Android app.

The idea came from wanting to turn on the app and send files quickly, without resorting to Google Drive, WhatsApp or other temporary channels. Fast, easy and intuitive.

A file explorer for Android phones that you use from the computer's browser, with no cables or extra software. In WiFi mode, the phone app starts a server with the web interface embedded and you connect with the IP and a PIN; in USB mode, a desktop launcher accesses the phone over MTP. The interface lets you browse, preview and manage the device's files.

The idea came from not finding an easy, direct and intuitive tool that got straight to the point: turn it on, connect to the computer and done. The ones that existed had unfriendly interfaces, were complicated and, often, paid.