Edge pixel smoothing of block-coded images - has edge pixels processed by edge filter having low=pass stages appropriate to motion vector ranges

摘要

Video images are subject to a block-based coding process for transmission and each block BB consists of a matrix of pixels.The edge pixels KP of the block are processed by an edge filter KGF to smooth the edges. - The filter is based upon two stages that have characteristics such that the transfer function varies with frequency and both have low pass characteristics. The filter stages are effective for different motion vector ranges. The filter is either linear or non-linear.