About Our Research
We are a team of researchers, currently working at Justus-Liebig-University in Giessen (Germany). Research in our lab focuses on visual perception, aiming to understand the mechanisms by which the brain is able to construct a rich perceptual experience from the inherently ambiguous retinal input. Specifically, we investigate what kind of information the visual system utilizes to estimate object qualities and how this information is extracted by the brain. We use a combination of methods including psychophysical experimentation, computational modeling, pattern analysis, neuroimaging and patient studies.
Visual perception of object qualities: material, motion and 3D shape.
A crucial task of the human visual system is to determine the qualities of the material that an object is made of. Correct identification of surface material qualities affects basic decisions such as whether food is edible, skin is healthy, a road is slippery, or whether an object is pliable. Humans perceive these qualities, and anticipate their consequences in a split second. Still, little is known about how the brain recognizes materials. Using psychophysics and functional MRI, we investigate how image motion influences object appearance, in particular, the perception of material qualities, 3D shape, and object motion.
Click here to get an idea of our research: Video: Local shape categorisation in dynamic scenes
Machine Vision: detection and identification of surface reflectance.
Successful identification of specularities in an image can be crucial for an artificial vision system when extracting the semantic content of an image, while interacting with the environment, or when estimating the shape of an object. We apply the insights gained from human perception to develop novel approaches to detect and identify surface reflectances in motion sequences.