2 target blocks. A prototype with 16
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Vision Chip for Very Fast Detection of Motion Vectors: Design and Implementation
Zheng LI Kiyoharu AIZAWA
IEICE TRANSACTIONS on Electronics Vol.E82-C No.9 pp.1739-1748
Publication Date: 1999/09/25
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Integrated Electronics and New System Paradigms)
Category: Imaging Circuits and Algorithms
vision chip, edge detection, block matching, motion vector, focal plane processing,
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This paper gives a detailed presentation of a "vision chip" for a very fast detection of motion vectors. The chip's design consists of a parallel pixel array and column parallel block-matching processors. Each pixel of the pixel array contains a photo detector, an edge detector and 4 bits of memory. In the detection of motion vectors, first, the gray level image is binarized by the edge detector and subsequently the binary edge data is used in the block matching processor. The block-matching takes place locally in pixel and globally in column. The chip can create a dense field of motion where a vector is assigned to each pixel by overlapping 2 2 target blocks. A prototype with 16 16 pixels and four block-matching processors has been designed and implemented. Preliminary results obtained by the prototype are shown.