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We propose a 200times160 pixel CMOS fingerprint system-on-a-chip with a local adaptive pixel scheme and embedded column-parallel processors for performing 2-D digital image processing for fingerprint recognition. The pixel includes a sensing block, ADC, and in-pixel frame memory with no additional area penalty. The sensor can capture robust fingerprint images in various finger conditions using a locally...
A CMOS fingerprint recognition SoC with embedded column-parallel processors is optimized for 2D digital image processing. The processor employs self-configuration features for adaptive filter operations and the pixel includes a sensing block, ADC and frame memory without area penalty. The total image processing time is less than 360 ms at 10 MHz.
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