Title :
A computational image sensor with pixel-based integration time control
Author :
Hamamoto, Takayuki ; Aizawa, Kiyoharu
Author_Institution :
Dept. of Electr. Eng., Sci. Univ. of Tokyo, Japan
Abstract :
We have been investigating a computational sensor which controls the integration time of every pixel independently. Because the integration time is controlled, higher temporal resolution and wider dynamic range can be achieved. We present a new adaptive integration time image sensor which has 128×64 pixels. We adopt a column parallel architecture to design the prototype chip. The scheme to control integration time is extended, and pixel pitch, processing speed and power consumption are much improved in comparison with our previous prototype. We show some experimental results obtained with the prototype
Keywords :
CMOS image sensors; adaptive signal processing; analogue-digital conversion; image coding; 0.8 mum; 128 pixel; 64 pixel; 8192 pixel; ADC; CMOS sensor; adaptive integration time image sensor; column parallel architecture; computational image sensor; dynamic range; image compression; pixel pitch; pixel-based integration time control; power consumption; processing speed; prototype chip design; temporal resolution; Circuits; Dynamic range; Electric variables control; Image sensors; Motion detection; Parallel architectures; Prototypes; Shift registers; Smart pixels; Timing;
Conference_Titel :
Image Processing, 2000. Proceedings. 2000 International Conference on
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-6297-7
DOI :
10.1109/ICIP.2000.901062
