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Optical Engineering

Interframe Hierarchical Vector Quantization
Author(s): Nasser M. Nasrabadi; Shihkuan E. Lin; Yushu Feng
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Paper Abstract

An interframe hierarchical vector quantizer (IHVQ) is presented that is capable of encoding image sequence scenes at rates below 0.3 bit per pixel per frame. A regular decomposition quadtree method is used to segment the interframe differential signal into homogeneous regions of different block size. Small blocks representing high contrast moving boundaries (i.e., the impulsive component of the difference signal) are vector quantized, whereas large blocks typically representing smooth regions of the image are encoded by the local sample mean of the region. The IHVQ system has a signal-to-noise ratio (SNR) at least 2 dB higher than the SNR of the interframe mean-reconstructed quadtree coding system.

Paper Details

Date Published: 1 July 1989
PDF: 9 pages
Opt. Eng. 28(7) 287717 doi: 10.1117/12.7977028
Published in: Optical Engineering Volume 28, Issue 7
Show Author Affiliations
Nasser M. Nasrabadi, Worcester Polytechnic Institute (United States)
Shihkuan E. Lin, Worcester Polytechnic Institute (United States)
Yushu Feng, Worcester Polytechnic Institute (United States)

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