共 14 条
Comparison of different image subband coding methods at low bit rates
被引:3
作者:
Zhang, WX
[1
]
Fischer, TR
[1
]
机构:
[1] Washington State Univ, Sch Elect Engn & Comp Sci, Pullman, WA 99164 USA
基金:
美国国家科学基金会;
关键词:
image compression;
quantization;
subband;
trellis-coded quantization;
wavelet;
zerotree;
D O I:
10.1109/76.754771
中图分类号:
TM [电工技术];
TN [电子技术、通信技术];
学科分类号:
0808 ;
0809 ;
摘要:
Two image subband coding methods are introduced as combinations of trellis-coded quantization (TCQ) with zerotree and stack-run coding, These TCQ-based image coding algorithms are compared, at low bit rates, with the set partitioning in hierarchical trees and stack-run scalar quantization-based image coding algorithms. Direct use of TCQ with zerotree or stack-run coding methods is found to provide little or no improvement in rate-distortion performance compared to scalar quantization.
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页码:419 / 423
页数:5
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