Efficient encoding of DC coefficients in transform coding of images using JPEG scheme

Chun tat See; Kwok Tung Lo; Wai kuen Cham

Efficient encoding of DC coefficients in transform coding of images using JPEG scheme

Chun tat See, Kwok Tung Lo, Wai kuen Cham

The Hong Kong Polytechnic University

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

3 Citations (Scopus)

Abstract

A minimum edge difference (MED) predictor is proposed to enhance the performance of the basic JPEG (Joint Photographic Experts Group) system. The MED predictor uses the edge difference between adjacent blocks for prediction of the DC coefficient of the current block. Analysis based on a statistical model shows that the proposed predictor can encode the DC coefficients more effectively than the JPEG predictor and the optimal signle element 1-D predictor. Computer simulation using real images also shows that, when the proposed MED predictor is used, there is about 5% bit rate reduction over the basic JPEG system.

Original language	English
Pages (from-to)	404-407
Number of pages	4
Journal	Proceedings - IEEE International Symposium on Circuits and Systems
Volume	1
Publication status	Published - 1 Dec 1991
Event	1991 IEEE International Symposium on Circuits and Systems Part 1 (of 5) - Singapore, Singapore Duration: 11 Jun 1991 → 14 Jun 1991

ASJC Scopus subject areas

Electrical and Electronic Engineering
Electronic, Optical and Magnetic Materials

Cite this

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title = "Efficient encoding of DC coefficients in transform coding of images using JPEG scheme",

abstract = "A minimum edge difference (MED) predictor is proposed to enhance the performance of the basic JPEG (Joint Photographic Experts Group) system. The MED predictor uses the edge difference between adjacent blocks for prediction of the DC coefficient of the current block. Analysis based on a statistical model shows that the proposed predictor can encode the DC coefficients more effectively than the JPEG predictor and the optimal signle element 1-D predictor. Computer simulation using real images also shows that, when the proposed MED predictor is used, there is about 5% bit rate reduction over the basic JPEG system.",

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AU - Lo, Kwok Tung

AU - Cham, Wai kuen

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N2 - A minimum edge difference (MED) predictor is proposed to enhance the performance of the basic JPEG (Joint Photographic Experts Group) system. The MED predictor uses the edge difference between adjacent blocks for prediction of the DC coefficient of the current block. Analysis based on a statistical model shows that the proposed predictor can encode the DC coefficients more effectively than the JPEG predictor and the optimal signle element 1-D predictor. Computer simulation using real images also shows that, when the proposed MED predictor is used, there is about 5% bit rate reduction over the basic JPEG system.

AB - A minimum edge difference (MED) predictor is proposed to enhance the performance of the basic JPEG (Joint Photographic Experts Group) system. The MED predictor uses the edge difference between adjacent blocks for prediction of the DC coefficient of the current block. Analysis based on a statistical model shows that the proposed predictor can encode the DC coefficients more effectively than the JPEG predictor and the optimal signle element 1-D predictor. Computer simulation using real images also shows that, when the proposed MED predictor is used, there is about 5% bit rate reduction over the basic JPEG system.

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M3 - Conference article

SN - 0271-4310

VL - 1

SP - 404

EP - 407

JO - Proceedings - IEEE International Symposium on Circuits and Systems

JF - Proceedings - IEEE International Symposium on Circuits and Systems

T2 - 1991 IEEE International Symposium on Circuits and Systems Part 1 (of 5)

Y2 - 11 June 1991 through 14 June 1991

ER -

Efficient encoding of DC coefficients in transform coding of images using JPEG scheme

Abstract

ASJC Scopus subject areas

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