| Additive vector decoding of transform coded images. | |
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MedLine Citation:
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PMID: 18276293 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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In a standard transform coding scheme of images or video, the decoder can be implemented by a table-lookup technique without the explicit use of an inverse transformation, In this new decoding method, each received code index of a transform coefficient addresses a particular codebook to fetch a component code vector that resembles the basis vector of the linear transformation. The output image is then reconstructed by summing a small number of nonzero component code vectors. With a set of well-designed codebooks, this new decoder can exploit the correlation among the quantized transform coefficients to achieve better rate-distortion performance than the conventional decoding method. An iterative algorithm for designing a set of locally optimal codebooks from a training set of images is presented. We demonstrate that this new idea can be applied to decode improved quality pictures from the bitstream generated from a standard encoding scheme of still images or video, while the complexity is low enough to justify practical implementation. |
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Authors:
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S W Wu; A Gersho |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: IEEE transactions on image processing : a publication of the IEEE Signal Processing Society Volume: 7 ISSN: 1057-7149 ISO Abbreviation: IEEE Trans Image Process Publication Date: 1998 |
Date Detail:
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Created Date: 2008-02-15 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9886191 Medline TA: IEEE Trans Image Process Country: United States |
Other Details:
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Languages: eng Pagination: 794-803 Citation Subset: - |
Affiliation:
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Dept. of Electr. and Comput. Eng., California Univ., Santa Barbara, CA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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