Title :
A CMOS imager with real-time frame differencing and centroid computation
Author :
Blum, Richard A. ; Wilson, Charles S. ; Hasler, Paul E. ; DeWeerth, Stephen P.
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
We present a novel imager that computes real-time frame difference as well as several image statistics. We desire to use a network of these imagers connected to microprocessors for computation on images. To reduce the bandwidth to the processors, each imager has on-chip computation to determine relevant information and sends only that to the microprocessors. We have developed an imager that uses simple analog elements to implement the desired functions. We present experimental results.
Keywords :
CMOS image sensors; analogue processing circuits; intelligent sensors; real-time systems; CMOS imager; analog elements; bandwidth reduction; distributed image analysis systems; image statistics. computation; low power image analysis systems; microprocessors; nonvolatile storage; pixel design; real-time centroid computation; real-time frame difference computation; smart sensors; Bandwidth; Bidirectional control; Biology computing; CMOS technology; Circuits; Computer networks; Diodes; Photodiodes; Pixel; Statistics;
Conference_Titel :
Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on
Print_ISBN :
0-7803-7448-7
DOI :
10.1109/ISCAS.2002.1010227
