A Differential Index Assignment Scheme for Tree-Structured Vector Quantization 


Vol. 28,  No. 2, pp. 100-109, Feb.  2003


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  Abstract

A differential index assignment scheme is proposed for the image encoding system in which a variable-length tree-structured vector quantizer is adopted. Each source vector is quantized into a terminal node of VLTSVQ and each terminal node is represented as a unique binary vector. The proposed index assignment scheme utilizes the correlation between interblocks of the image to increase the compression ratio with the image quality maintained. Simulation results show that the proposed scheme achieves a much higher compression ratio than the conventional one does and that the amount of the bit rate reduction of the proposed scheme becomes large as the correlation of the image becomes large. The proposed encoding scheme can be effectively used to encode MR images whose pixel values are, in general, highly correlated with those of the neighbor pixels.

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  Cite this article

[IEEE Style]

J. Han and I. Jeong, "A Differential Index Assignment Scheme for Tree-Structured Vector Quantization," The Journal of Korean Institute of Communications and Information Sciences, vol. 28, no. 2, pp. 100-109, 2003. DOI: .

[ACM Style]

Jong-Ki Han and In-Cheol Jeong. 2003. A Differential Index Assignment Scheme for Tree-Structured Vector Quantization. The Journal of Korean Institute of Communications and Information Sciences, 28, 2, (2003), 100-109. DOI: .

[KICS Style]

Jong-Ki Han and In-Cheol Jeong, "A Differential Index Assignment Scheme for Tree-Structured Vector Quantization," The Journal of Korean Institute of Communications and Information Sciences, vol. 28, no. 2, pp. 100-109, 2. 2003.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880