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SPATIOTEMPORAL FILTERING METHOD FOR REDUCING NOISE IN PRELIMINARY PROCESSING PERIOD OF PICTURE SEQUENCE IN VIDEO ENCODER
SPATIOTEMPORAL FILTERING METHOD FOR REDUCING NOISE IN PRELIMINARY PROCESSING PERIOD OF PICTURE SEQUENCE IN VIDEO ENCODER
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机译:视频编码器在图像序列预处理过程中减少噪声的时空滤波方法
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摘要
PROBLEM TO BE SOLVED: To provide technology for removing a noise peak in a digital video picture and filtering noise while the advantage of DRT is maintained. ;SOLUTION: The pixels of a first group (WORKING-WINDOW) constituted of the combination of the pixel (P) of a present picture to be filtered and the pixel (PIXEL-NEAR) of a second group which is spatiotemporally approximated to the above pixel is selected. The extended sum (SUMkj) of the prescribed number (N) of a value taken by a weight function which is previously decided on the intensity of a video component (kj) selected on the pixel of the first group is calculated. The pixel of the second group can belong to the current picture or a preceding picture.;COPYRIGHT: (C)2001,JPO
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