Title :
A multimode gray-scale CMOS optical sensor for visual computers
Author :
Liñan, G. ; Rodríguez-vÁzquez, A. ; Espejo, S. ; Domínguez-castro, R. ; Roca, E.
Author_Institution :
Instituto de Microelectron. de Sevilla, CNM-CSIC, Sevilla, Spain
Abstract :
This paper presents a new multimode optical sensor architecture for the optical interface of Visual CNN (cellular neural net) chips. The sensor offers to the user the possibility of choosing the photo-sensitive device as well as the mechanism for transducing the photogenerated charges into the correspondent pixel voltage. Both linear or logarithmic compression acquisition modes are available. This makes the sensor very suitable to be used in very different illumination conditions.
Keywords :
CMOS image sensors; cellular neural nets; data compression; image coding; image processing equipment; neural chips; optical sensors; Visual CNN chips; cellular neural net chips; illumination; linear compression acquisition mode; logarithmic compression acquisition mode; multimode gray-scale CMOS optical sensor; optical interface; photo-sensitive device; photogenerated charges; pixel voltage; visual computers; Cameras; Cellular neural networks; Data communication; Electrons; Gray-scale; Lighting; Optical computing; Optical sensors; Photonic band gap; Radiative recombination;
Conference_Titel :
Cellular Neural Networks and Their Applications, 2002. (CNNA 2002). Proceedings of the 2002 7th IEEE International Workshop on
Print_ISBN :
981-238-121-X
DOI :
10.1109/CNNA.2002.1035108
