Object Recognition

Convolutional Neural Networks November 2008 – July 2010

University of Bonn, Germany C for CUDA, C++, Qt, Python

At the University of Bonn I was researching trainable models for object recognition in natural images. Convolutional networks are a neural network architecture based on the mammal visual cortex. Training such models on large sets of high-resolution images is challenging due to high computational complexity. To speed up the training process I implemented the algorithms in "C for CUDA" for Nvidia's parallel GPU architecture, achieving a speedup by two orders of magnitude.
Challenges in this project included:

Open Source Projects

OpenTTD March 2004 – February 2005

Lead Game Programmer C, C++

OpenTTD (www.openttd.org) is a popular and complete open source clone of the business simulation Transport Tycoon. Starting out in C, the code was later migrated to C++ and ported to a variety of platforms, including Windows, GNU/Linux, Mac OS X, BSD and Solaris. Currently, the project contains over 200,000 physical source lines of code.

In my role as lead programmer I was responsible for:


ScummVM January 2005 – November 2005

Contributor C++

ScummVM (www.scummvm.org) is a game interpreter, recreating the game engines of classic adventure games such as Lucas Arts' "Monkey Island" or "Day of the Tentacle". I contributed to this project by fixing bugs and maintaining, compiling and updating binary packages for Linux.

Portable Consoles

OpenTTD for Nintendo DS December 2007

  C++, DevKit Pro

Creating a fully functional port of the transport simulation game OpenTTD for Nintendo's original DS console (NDS) was the aim of this project. My main intention was to optimize the game's graphics engine, memory management and UI for the unique capabilities of the NDS. The port is fully functional, including sound and a unique touch screen interface.
Challenges included:


Pong for Gameboy Advance and Nintendo DS March/October 2007

  C++, DevKit Advance, DevKit Pro

An implementation of the classic arcade game Pong for Nintendo's portable consoles. Initially I implemented this game for Gameboy Advance (GBA), and later ported it to the next generation Nintendo DS (NDS) console. Goals of these two projects included: