Reduction of block-transform image coding artifacts by using local statistics of transform coefficients

Steven S O Choy; Yuk Hee Chan; Wan Chi Siu

doi:10.1109/97.551686

Reduction of block-transform image coding artifacts by using local statistics of transform coefficients

Steven S O Choy, Yuk Hee Chan, Wan Chi Siu

The Hong Kong Polytechnic University

Research output: Journal article publication › Journal article › Academic research › peer-review

32 Citations (Scopus)

Abstract

This letter presents a new approach to reduce coding artifacts in transform image coding. We approach the problem in an estimation of each transform coefficient from its quantized version with its local mean and variance. The proposed method can reduce much coding artifacts of low bit-rate coded images, and at the same time guarantee that the resulting images satisfies the quantization error constraint.

Original language	English
Pages (from-to)	5-7
Number of pages	3
Journal	IEEE Signal Processing Letters
Volume	4
Issue number	1
DOIs	https://doi.org/10.1109/97.551686
Publication status	Published - 1 Dec 1997

ASJC Scopus subject areas

Electrical and Electronic Engineering
Signal Processing

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10.1109/97.551686

http://hdl.handle.net/10397/1484

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abstract = "This letter presents a new approach to reduce coding artifacts in transform image coding. We approach the problem in an estimation of each transform coefficient from its quantized version with its local mean and variance. The proposed method can reduce much coding artifacts of low bit-rate coded images, and at the same time guarantee that the resulting images satisfies the quantization error constraint.",

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AB - This letter presents a new approach to reduce coding artifacts in transform image coding. We approach the problem in an estimation of each transform coefficient from its quantized version with its local mean and variance. The proposed method can reduce much coding artifacts of low bit-rate coded images, and at the same time guarantee that the resulting images satisfies the quantization error constraint.

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Reduction of block-transform image coding artifacts by using local statistics of transform coefficients

Abstract

ASJC Scopus subject areas

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