A novel CMOS imager with 2-dimensional binarization and edge detection for highly integrated imaging systems

The proposed CMOS imager successfully embeds an advanced local threshold algorithm to simultaneously achieve the 2-dimensional operations of binarization and edge detection. Both functions provide a lot of widely spread applications for real-time imaging systems. A 64 /spl times/ 64 pixel array imager is implemented in the TSMC 0.35 /spl mu/m 2P4M technology. Each pixel has the size of 10 /spl mu/m /spl times/ 10 /spl mu/m with a fill factor of 36.1%. The test chip occupies 1.80 mm /spl times/ 1.63 mm and consumes 15 mW from a 3.3 V power supply.