An Image-Moment Sensor with Variable-Length Pipeline Structure

A 128 x 128 pixel functional image sensor was implemented. The sensor was able to capture images at 1,000 frame/s and extract the sizes and positions of 10 objects/frame when clocked at 8 MHz. The size of each pixel was 18 μm x 18 μm and the fill factor was 28%. The chip, 3.24 mm x 3.48 mm in size, was implemented with a 0.35 μm CMOS sensor process; the power consumption was 29.7 mW at 8 MHz.