WA 17.6: A Locally Adaptive CMOS Image Sensor with 90dB Dynamic Range
نویسندگان
چکیده
An integrated 128x128 CMOS image sensor with programmable diffusion kernel for local brightness adaptation and contrast enhancement achieves local brightness adaptation by dividing each individual pixel photocurrent by the average photocurrent of the corresponding kernel. The chip is realized in 1μm standard CMOS. Pixel pitch is 47μm and total chip area is 86.4 mm2. Power dissipation is 20mW at 5V power supply. The maximum clock frequency is around 4MHz allowing 240frames/s frame rate and 90dB dynamic range with 35dB signal to noise ratio (SNR). The size of the adaptation kernel is 3b programmable.
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