Time: 2:00-3:00pm 24 Sep., 2012(Monday)
Location: Conference Room 440, the 3rd Academic Building, Yuquan Campus, Zhejiang University
Some questions of colour vision
Abstract:
Classical colorimetry is built on trichromacy, the functioning of the three types of cone receptor cells, supposing for each of them additivity and proportionality. CIE TC 1-36 has re-evaluated the basic colour matching experiments, and corrected the colour matching functions. Experiments have shown that these functions – or further modifications – are needed to describe metameric matches, where narrow band LED spectra are involved.
Brightness perception is even more complicated, it is non-additive, and besides cone contribution, the influence of rods and of the intrinsically photosensitive retinal ganglion cells (ipRGCs) might also be necessary to explain the experimental results.
Experiments for obtaining new colour matching functions and brightness of metameric white light will be discussed.
Brief Bio:Professor Emeritus of the University of Veszprém, Hungary. He headed the Department of Image Processing and Neurocomputing. Since retirement he is advisor for the “Colour and Multimedia Laboratory”, and is still actively involved with many research activeities.
During the 1980s and 90s, he worked for the International Commission on Illumination (CIE) as its General Secretary and later technical manager. He functioned also in a number of honorary positions of the CIE.
He is member of the Optical Society of America, of The Society for Imaging Science and Technology and of several Hungarian Societies in the fields of light and lighting and optical measurement. He has published over 500 scientific papers