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High Efficiency Video Coding (HEVC) employs the complex rate-distortion optimization (RDO) to choose the optimal mode decison which leads to the drastical increase of computation complexity. In order to solve the problem, this paper proposed a new RD estimation method for HEVC intra mode decision that uses transformed coefficients to do the rate-distortion optimization. For the rate part, the method...
Compressive Sensing (CS) is an emerging technology which samples a sparse signal at a rate corresponding to its actual information content rather than to its bandwidth. Different from traditional coding schemes in which distortion mainly comes from quantizer, distortion are related to quantization and compressive sampling in compressive sensing based coding schemes. Since the total coding bits are...
In multi-view video coding, since inter-view prediction has been adopted as an important coding tool which could improve coding efficiency greatly, inter-view dependency is inevitable, i.e., the distortion of the reference view (RV) picture could be propagated to the non-reference view (NRV) pictures . Therefore, in order to achieve higher coding efficiency , the inter-view dependency must be taken...
Screen content videos often have mixed content consisting of various types such as natural content, text and graphics in the same picture. To achieve high coding efficiency for this content, new coding tools are developed in the High Efficiency Video Coding (HEVC) standard Screen Content Coding (SCC) extension. Among them, intra block copy (IntraBC) allows a nonlocal intra prediction from the coded...
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