We propose an image processing system using an analog transform imager chip. The transform imager is a CMOS imager which is capable of block transforms using floating-gates. Because the transform imager is highly programmable, it can perform various block transforms such as the Walsh-Hadamard transform, discrete sine transform (DST), and discrete cosine transform (DCT). We investigate the reduction of computations and power by a baseline JPEG compression system as an application. The 48/spl times/40 transform imager provides 144 MOPS/s using an area of 1.03 mm/sup 2/ in 0.5 /spl mu/m CMOS technology, and it has a much higher fill factor, 46%, compared with other focal plane imagers. The measured transformed images and the reconstructed images are presented to demonstrate the operations.
['Jungwon Lee', 'Abhishek Bandyopadhyay', 'I. Faik Baskaya', 'Ryan Robucci', 'Paul E. Hasler']
Image processing system using a programmable transform imager