Juan Raúl Padrón Griffe

About me
I am a postdoctoral researcher in Junqiu Zhu's group at Shandong University. My research focuses on photorealistic rendering, including appearance modeling for complex multi-scale materials (human skin, hair, fur, scales, feathers, cosmetics, textiles, and granular materials), light transport simulation algorithms and data-driven representations. I am also interested in inverse rendering, differentiable rendering and 3D reconstruction. I am currently collaborating with Zahra Montazeri's group on the representation and rendering of textiles.

I completed my PhD dissertation, Modeling and Rendering of Multiscale Materials, at the Graphics and Imaging Lab, Universidad de Zaragoza. I was a Marie Sklodowska-Curie Fellow of the EU Project PRIME, advised by Adolfo Muñoz and Adrian Jarabo. I hold an M.Sc. in Informatics from the Technical University of Munich with a major in Graphics and Vision, and a B.Sc. in Computer Science from the Universidad Central de Venezuela with a major in Computer Graphics.

Projects

Game Capture

2018, Sep 28    

The main goal of the Hiwi project at the chair of Remote Sensing Technology at the Technical University of Munich is collecting potentially useful information from video games in order to train computer vision models for autonomous driving applications. The project is inspired in the seminal publication Playing for Data, where the authors show that acquired data from video games supplemented with real-world images significantly increases the accuracy of deep learning models for the semantic segmentation task. In addition, the acquisition pipeline reduces the amount of hand-labeled real-world data. We develop a prototype in C++ to collect in realtime the DirectX Frame Buffers (RGB, Stencils, Albedo, Irradiance, Specular, Normal) from the video game Grand Theft Auto V. Finally, we could also extract further internal game states (e.g. time of day, location, vehicle speed, etc) using the Script Hook V mod.

In the second phase, we tried to capture data from other games based on the Free Supervision from Video Games paper. The GameHook library wraps DirectX 11 to intercept and modify the rendering code of a particular game, including the injection of code into the vertex or pixel shaders. Unfortunately, the library failed to hook games like Project Cars 2 or Sebastian Loeb Rally.

Results:

Disparity Map Normal Map Instance Segmentation

Albedo Map Specular Map Irradiance Map

Advisors: Sandra Aigner, Lukas Liebel
Supervisor: Marco Körner

If you want to know more about the project, please contact Lukas Liebel and Sandra Aigner. They are really nice advisors and they are working in interesting projects. I would also suggest you to read this amazing post GTA V - Graphics Study and play with the amazing RenderDoc tool.