Title :
Efficient Embedded Ringing Artifact Reduction for Low Bit-rate JPEG2000 Images
Author :
Fang, Jinyong ; Sun, Jun
Author_Institution :
Inst. of Image Commun. & Inf. Process., Shanghai Jiao Tong Univ.
Abstract :
Ringing artifacts occur near large edges in reconstructed low bit-rate JPEG2000 images due to the wavelet-based compression techniques. In this paper, an embedded ringing artifacts reduction scheme for low bit-rate JPEG2000 images is proposed. We adopt a local adaptive estimation for the coefficients in spatial domain and LL wavelet subband at each decomposition level before the inverse discrete wavelet transform. The method is computationally efficient and achieves PSNR improvement and human perceptual enhancement
Keywords :
adaptive estimation; data compression; discrete wavelet transforms; image coding; bit-rate JPEG2000 images; embedded ringing artifact reduction; human perceptual enhancement; inverse discrete wavelet transform; local adaptive estimation; spatial domain coefficients; wavelet-based compression techniques; Discrete wavelet transforms; Image coding; Image edge detection; Image reconstruction; Low pass filters; Nonlinear distortion; PSNR; Transform coding; Wavelet domain; Wavelet transforms;
Conference_Titel :
Signal Processing, 2006 8th International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-9736-3
Electronic_ISBN :
0-7803-9736-3
DOI :
10.1109/ICOSP.2006.345605
