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Compression-dependent transform-domain downward conversion for block-based image coding
Shuyuan Zhu2; Zhiying He2; Xiandong Meng1; Jiantao Zhou3; Bing Zeng4
2018-02-14
Source PublicationIEEE Transactions on Image Processing
ISSN10577149
Volume27Issue:6Pages:2635-2649
Abstract

Transform-domain downward conversion (TDDC) for image coding is usually implemented by discarding some high-frequency components from each transformed block. As a result, a block of fewer coefficients is formed, and a lower compression cost is achieved due to the coding of only a few low-frequency coefficients. In this paper, we focus on the design of a new TDDC-based coding method by using our proposed interpolationcompression directed filtering (ICDF) and error-compensated scalar quantization (ECSQ), leading to the compression-dependent TDDC (CDTDDC)-based coding. More specifically, ICDF is first used to convert each 16 × 16 macro-block into an 8 × 8 coefficient block. Then, this coefficient block is compressed with ECSQ, resulting in a smaller compression distortion for those pixels that locate at some specific positions of a macro-block. We select these positions according to the 4:1 uniform sub-sampling lattice and use the pixels locating at them to reconstruct the whole macro-block through an interpolation. The proposed CDTDDC-based coding can be applied to compress both grayscale and color images. More importantly, when it is used in the color image compression, it offers not only a new solution to reduce the data-size of chrominance components but also a higher compression efficiency. Experimental results demonstrate that applying our proposed CDTDDC-based coding to compress still images can achieve a significant quality gain over the existing compression methods.

KeywordDistortion Image Coding Interpolation Quantization Sub-sampling
DOI10.1109/TIP.2018.2806281
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaComputer Science ; Engineering
WOS SubjectComputer Science, Artificial Intelligence ; Engineering, Electrical & Electronic
WOS IDWOS:000427637600003
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Cited Times [WOS]:3   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF COMPUTER AND INFORMATION SCIENCE
Faculty of Science and Technology
Corresponding AuthorJiantao Zhou; Bing Zeng
Affiliation1.Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Hong Kong.
2.School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China.
3.Faculty of Science and Technology, University of Macau, Macau 999078, China.
4.e Institute of Image Processing, Hong Kong University of Science and Technology, Hong Kong.
Corresponding Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Shuyuan Zhu,Zhiying He,Xiandong Meng,et al. Compression-dependent transform-domain downward conversion for block-based image coding[J]. IEEE Transactions on Image Processing,2018,27(6):2635-2649.
APA Shuyuan Zhu,Zhiying He,Xiandong Meng,Jiantao Zhou,&Bing Zeng.(2018).Compression-dependent transform-domain downward conversion for block-based image coding.IEEE Transactions on Image Processing,27(6),2635-2649.
MLA Shuyuan Zhu,et al."Compression-dependent transform-domain downward conversion for block-based image coding".IEEE Transactions on Image Processing 27.6(2018):2635-2649.
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