Title :
High speed digital smart image sensor with image compression function
Author :
Narisawa, Sousuke ; Masuda, Kentaro ; Hamamoto, Takayuki
Author_Institution :
Dept. of Electr. Eng., Tokyo Univ. of Sci., Japan
Abstract :
We propose a high speed digital smart image sensor on which A/D conversion circuits and digital processing circuits of image compression are integrated. By on-sensor image compression, the proposed sensor can overcome a communication bottle neck between a sensor and peripherals that is one of the most serious problems for achieving high frame rates. The compression method uses the correlation between two consecutive frames. It has some compression modes by controlling spatial and temporal resolutions. In this paper, the algorithm of on-sensor-compression is explained and some experimental results are shown. finally, we show the design of new digital smart sensor.
Keywords :
CMOS image sensors; analogue-digital conversion; data compression; image coding; image processing equipment; pipeline processing; A/D conversion circuits; CMOS process; address decoding circuits; correlation between consecutive frames; digital smart image sensor; high speed image capturing; high speed image sensor; image compression function; on-sensor image compression; pipeline converters; random access; rate control mode; spatial resolutions; step function generator; temporal resolutions; Bit rate; Circuit testing; Decoding; Image coding; Image resolution; Image sensors; Intelligent sensors; PSNR; Signal resolution; Spatial resolution;
Conference_Titel :
Advanced System Integrated Circuits 2004. Proceedings of 2004 IEEE Asia-Pacific Conference on
Print_ISBN :
0-7803-8637-X
DOI :
10.1109/APASIC.2004.1349426
