Илиян is how my name is written in Cyrillic, the alphabet used in my mother tongue, Bulgarian. I can say I am a happy man, as I love the two most essential ingredients of my life – my girlfriend and my job. I like technology and gadgets, I'm fascinated by science. I appreciate clever design, beautiful pictures, and good food. I like skiing, driving cars, and I'm always in search for interesting travel destinations around the globe.
I do computer graphics – producing photo-realistic images of virtual 3D environments. I investigate methods for efficient physically based simulation of light transport, with the ultimate goal of rendering synthetic pictures that are indistinguishable from real photographs. This involves solving various problems arising from the physical nature of light, the mathematical models used to describe light transport, and the practical implementation of the simulation on a computer. I am pursuing a PhD degree in this field. Check out my publications page.
Computer graphics is a fascinating synergy of science, technology, and art, which comes in many different flavors. Solving complex mathematical equations, or writing intricate computer programs, can be very rewarding when the final result is a beautiful picture, or a movie, that can be also appreciated by non-technicians. Realistic image synthesis has important applications in architectural visualization, industrial design, animated and feature films, commercials, games, and other areas.
I obtained a bachelor degree in computer science from Sofia University, Bulgaria, and a master degree from Saarland University, Germany, with an IMPRS fellowship from the Max-Planck Institute. I stayed in Saarbrücken as a doctoral student, again supported by IMPRS, and later became a researcher at the Intel Visual Computing Instute. I recently did a research internship at Disney Research Zürich.
I am close to finishing my PhD, and I am looking for an industrial or a research position, preferably in the London area.
In the real world, light particles are emitted from light sources, travel through space, and interact with the objects in the environment, until they finally reach our eyes or the camera sensors, which in turn record their energy and convert it to a picture. This process can be simulated on a computer to produce a realistic image of a virtual environment with physically correct lighting.
The physical laws that govern light transport, and the mathematical models that formalize the image rendering problem, are generally well understood. However, performing an accurate simulation is a very challenging task in practice – billions of particles need to be tracked, each can interact with many objects, and only a small fraction of them eventually make it to the camera.
The primary focus of my work can be very shortly summarized as investigating methods for efficiently discovering light transport paths that bring significant energy to the camera. Doing so can greatly improve the efficiency of the simulation, and thus speed-up rendering, as the computational effort is concentrated where it pays off most.