Title: The single-pass perceptual embedded zero-tree coding implementation on DSP
Authors: Wu, Bing-Fei
Huang, Hao-Yu
Chen, Yen-Lin
Institute of Electrical and Control Engineering
Keywords: Block-edge classification;Discrete cosine transform (DCT);Embedded system;Fast algorithm;Image compression;Zero-tree coding
Issue Date: 1-Sep-2012
Abstract: This paper proposes a block-edge-based Single-Pass Perceptual Embedded Zero-tree Coding (SPPEZC) method. SPPEZC combines two novel compression concepts, called Block-Edge Detection (BED) and the Low-Complexity and Low-Memory Entropy Coder (LLEC), for coding efficiency and quality. Because the edge information can provide beneficial cues for preserving the perceptual quality of compressed images, this paper presents an effective combinative coding scheme, called Single-Pass Perceptual Embedded Zero-tree Coding (SPPEZC), which integrates the improved LLEC and the block-edge information. This approach provides improved perceptual quality in compressed images. Based on the block-edge information, this paper proposes an adaptive architecture for adjusting the quantization table and subsequently coding the quantized coefficients with the LLEC. The proposed SPPEZC approach was implemented and evaluated on both PC-based and DSP-based embedded platforms. Experimental results and comparisons demonstrate that the proposed SPPEZC technique provides computational efficiency as well as satisfactory perceptual quality in compressed images. (C) 2012 Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.camwa.2012.03.032
ISSN: 0898-1221
DOI: 10.1016/j.camwa.2012.03.032
Volume: 64
Issue: 5
Begin Page: 1140
End Page: 1152
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