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In this paper, we present an arbitrary shape matching (ASM) coding technique for screen contents. In ASM coder, a Coding Unit (CU) is broken into multiple pixel sample strings. Each string called matched string in the CU has a matching string in the previously coded and reconstructed pixel buffer. Then the distance (either 1D or 2D) between the matching string and matched string and the length of...
Computer screens contain both discontinuous-tone content and continuous-tone content, which have essentially different characteristics. Thus, dual-coder approach is needed to effectively compress screen contents. This paper proposes a Pseudo-2D-matching (P2M) coder based dual-coder architecture for screen contents. An input Largest Coding Unit (LCU) is pre-coded simultaneously by a P2M coder and a...
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