Image sensor with general spatial processing in a 3D integrated circuit technology
Gruev, V.; Van der Spiegel, J.; Philipp, R.M.; Etienne-Cummings, R.
Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on
Volume , Issue , 0-0 0 Page(s):4 pp. - 4966
Digital Object Identifier   10.1109/ISCAS.2006.1693745
Summary:An architectural overview of an image sensor with general spatial processing capabilities on the focal plane is presented. The system has been fabricated on two separate tiers, implemented on silicon-on-insulator technology with vertical interconnect capabilities. One tier is dedicated to imaging, where photosensitivity and pixel fill have been optimized. The subsequent layers contain noise suppression and digitally controlled analog processing elements, where general spatial filtering is computed. The digitally controlled aspect of the processing unit allows generic receptive fields to be computed on read out. The image is convolved with four receptive fields in parallel. The chip provides parallel readout of the filtered results and the intensity image

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