A 30-frames/s megapixel real-time CMOS image processor

摘要

A real-time 1024×1024 image processor for digital motionncamera systems is described. The application-specific IC (ASIC) correctsndark current and white imbalance pixelwise, and performs a colorninterpolation over nine lines of images from a miniaturized camera headnhousing a single charge-coupled device (CCD). A color spacentransformation is implemented to achieve true-color motion images withnframe rates up to 30 frames/s. Additional features include a focus andnillumination criteria calculation and a megapixel-to-PAL scannconversion. The chip area is 49 mm2, and it was fabricated inna single-poly three-layer-metal 0.35-Μm CMOS process. The device isnpackaged in a 208-pin ceramic quad flat package (CQFP), and dissipatesn278 mW at 2.5 V