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In this paper we propose a gesture perception algorithm using compact one-dimensional representation of spatio-temporal motion-field patches. At the learning stage, motion-field patches are randomly extracted and stored as templates. When generating feature vectors for video sequences, we compare stored templates with video, calculate maximum similarities and save those values as elements of feature...
A method to determine the parameters of directional motion blurring noise using edge detectors is developed in this paper. Once the parameters characterizing the blurring noise are known, the point spread function (PSF) of the blurring noise can be reconstructed and the noise subsequently eliminated. The algorithm uses an edge detector with dynamic thresholding to extract edge information from an...
A block-matching-based CMOS optical flow sensor architecture has been developed for real-time processing of moving images. In this architecture, an array of SIMD (single instruction multiple data) units calculate SAD (sum of absolute difference) values using only data from nearest-neighbor-units. As a result, it has become possible to carry out the block matching algorithm very efficiently with a...
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