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Optical Engineering

Quadtree-segmented image coding schemes using vector quantization and block truncation coding
Author(s): YuChen Hu; Chin-Chen Chang
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Paper Abstract

Three novel image compression schemes are proposed here for multimedia applications. The schemes are designed to combine the advantages of vector quantization and block truncation coding based on quadtree segmentation. A new vector quantization scheme, called subsampling VQ (SVQ), is proposed and used in the new schemes. The spatial correlation between neighboring image blocks and uniformity in variable-sized image blocks is exploited in these schemes. Simulation results show that the new schemes have succeeded in achieving better coding performance with subjective image quality at low bit rates.

Paper Details

Date Published: 1 February 2000
PDF: 8 pages
Opt. Eng. 39(2) doi: 10.1117/1.602384
Published in: Optical Engineering Volume 39, Issue 2
Show Author Affiliations
YuChen Hu, National Chung Cheng Univ. (Taiwan)
Chin-Chen Chang, National Chung Cheng Univ. (Taiwan)

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