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Intra prediction has been efficiently employed in block based image/video coding to remove the spatial redundancy. In this paper, we propose a position dependent linear intra prediction (PDLIP) approach to further improve the accuracy of prediction. Specifically, for each prediction direction, the prediction of each sample within a target block is calculated as a linear weighted summation of the surrounding...
Intra prediction is one effective method to remove the spatial redundancies in intra frame coding. Better intra prediction will result in the residual with less energy, which will decrease the number of bits needed to reconstruct the signal at decoder. To improve the accuracy of intra prediction, a context-adaptive pixel based prediction (CAPBP) algorithm is proposed in this paper. For each pixel...
A novel VLSI architecture for digital multimedia post-processing system is presented. First, the sequence of the post-processing de-blocking filter is modified, and the filter algorithm is optimized. Second, the frames are extended at the upper and left frame boundaries for 8 pixels in depth in order to avoid the irregularity and simplify the control unit. At last a macro block-based together with...
Now a number of architectures of intra frame decoder for H. 264 have been put forword, but most of them use an original decoding order. That is current block's prediction shouldn't be executed until previous block's reconstruction is finished. Obviously, this introduces much redundant time. In this paper, we proposed a 4 times 4 pipelined architecture in which current block's prediction can be paralleled...
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