Title :
Block-matching-based CMOS optical flow sensor using only-nearest-neighbor computation
Author :
Fukuoka, Yudai ; Shibata, Tadashi
Author_Institution :
Dept. of Frontier Inf., Univ. of Tokyo, Tokyo, Japan
Abstract :
A block-matching-based CMOS optical flow sensor architecture has been developed for real-time processing of moving images. In this architecture, an array of SIMD (single instruction multiple data) units calculate SAD (sum of absolute difference) values using only data from nearest-neighbor-units. As a result, it has become possible to carry out the block matching algorithm very efficiently with a minimal complexity in the interconnect structure. The chip was designed in a 0.18-mum 5-metal CMOS technology and sent to fabrication, and the correct operation of the entire system was confirmed by nanosim simulation. The chip is expected to perform at a frame rate about 1300 frame/sec.
Keywords :
CMOS image sensors; image matching; image motion analysis; image sequences; SIMD; block-matching-based CMOS optical flow sensor; interconnect structure; moving image processing; nanosim simulation; only-nearest-neighbor computation; single instruction multiple data; size 0.18 mum; CMOS image sensors; Circuits; Computer architecture; Concurrent computing; Image motion analysis; Image sensors; Optical computing; Optical sensors; Pixel; Very large scale integration;
Conference_Titel :
Circuits and Systems, 2009. ISCAS 2009. IEEE International Symposium on
Conference_Location :
Taipei
Print_ISBN :
978-1-4244-3827-3
Electronic_ISBN :
978-1-4244-3828-0
DOI :
10.1109/ISCAS.2009.5118048
