A deblocking algorithm for JPEG compressed images using overcomplete wavelet representations

被引：154

作者：

Xiong, ZX ^{[1
]}

Orchard, MT ^{[1
]}

Zhang, YQ ^{[1
]}

机构：

[1] DAVID SARNOFF RES CTR,PRINCETON,NJ 08543

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY | 1997年 / 7卷 / 02期

关键词：

blocking effect; denoising; JPEG; wavelets;

D O I：

10.1109/76.564123

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：

This paper introduces a new approach to deblocking of JPEG compressed images using overcomplete wavelet representations. By exploiting cross-scale correlations among wavelet coefficients, edge information in the JPEG compressed images is extracted and protected, while blocky noise in the smooth background regions is smoothed out in the wavelet domain. Compared with the iterative methods reported in the literature, our simple wavelet-based method has much lower computational complexity, yet it is capable of achieving the same peak signal-to-noise ratio (PSNR) improvement as the best iterative method and giving visually very pleasing images as well.

引用

页码：433 / 437

页数：5

共 13 条

[1] A COMPUTATIONAL APPROACH TO EDGE-DETECTION [J].

CANNY, J .

IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE, 1986, 8 (06) :679-698

[2]

CROUSE M, 1995, P ICIP 95, V1, P462

[3] DE-NOISING BY SOFT-THRESHOLDING [J].

DONOHO, DL .

IEEE TRANSACTIONS ON INFORMATION THEORY, 1995, 41 (03) :613-627

[4]

GOPINATH RA, 1994, P 1994 IEEE INT C IM, V2, P913

[5]

Lang M., 1996, SIGNAL PROCESSING LE, V3, P10

[6]

LINARES I, 1996, P ISCAS 96 ATL MAY

[7] CHARACTERIZATION OF SIGNALS FROM MULTISCALE EDGES [J].

MALLAT, S ;

ZHONG, S .

IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE, 1992, 14 (07) :710-732

[8]

PENNEBAKER WB, 1992, JPEG STOILL IMAGE DA

[9] REDUCTION OF BLOCKING EFFECTS IN IMAGE-CODING [J].

REEVE, HC ;

LIM, JS .

OPTICAL ENGINEERING, 1984, 23 (01) :34-37

[10]

Wei D., 1995, P ICIP 95 WASH OCT, VI, P610

← 1 2 →