Title :
Calculating direction of motion with sustained and transient responses of silicon retina
Author :
Kameda, S. ; Yagi, T.
Author_Institution :
Osaka Univ., Japan
Abstract :
A silicon retina was fabricated to emulate two fundamental types of response in the vertebrate retinal circuit, namely the sustained and transient responses. The sustained response exhibits a Laplacian-Gaussian-like receptive field. The transient response is obtained by subtracting consecutive image frames. The chip was applied for the extraction of motion direction in real-time under indoor illumination.
Keywords :
CMOS analogue integrated circuits; CMOS image sensors; analogue processing circuits; image enhancement; motion estimation; transient response; CMOS technology; FPGA system; Laplacian-Gaussian-like receptive field; VLSI chip; consecutive image frame subtraction; contrast enhancement; direction of motion; indoor illumination; motion direction extraction; noise-free smoothing; real-time parallel image processing; robot vision; silicon retina; sustained response; transient response; two-dimensional analog silicon retina; vertebrate retinal circuit; zero-crossing detection; CMOS technology; Circuits; Data mining; Feature extraction; Lighting; Retina; Sampling methods; Silicon; Transient response; Voltage control;
Conference_Titel :
SICE 2002. Proceedings of the 41st SICE Annual Conference
Print_ISBN :
0-7803-7631-5
DOI :
10.1109/SICE.2002.1196604
