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Enhanced Prediction Algorithm for Near-lossless Image Compression with Low Complexity and Low Latency
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 Title & Authors
Enhanced Prediction Algorithm for Near-lossless Image Compression with Low Complexity and Low Latency
Son, Ji Deok; Song, Byung Cheol;
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 Abstract
This paper presents new prediction methods to improve compression performance of the so-called near-lossless RGB-domain image coder, which is designed to effectively decrease the memory bandwidth of a system-on-chip (SoC) for image processing. First, variable block size (VBS)-based intra prediction is employed to eliminate spatial redundancy for the green (G) component of an input image on a pixel-line basis. Second, inter-color prediction (ICP) using spectral correlation is performed to predict the R and B components from the previously reconstructed G-component image. Experimental results show that the proposed algorithm improves coding efficiency by up to 30% compared with an existing algorithm for natural images, and improves coding efficiency with low computational cost by about 50% for computer graphics (CG) images.
 Keywords
Line-based low-latency coder;Near-lossless coding;Inter-color prediction;Variable block size;
 Language
English
 Cited by
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