Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/31498
Title: Successive structural analysis using wavelet transform for blocking artifacts suppression
Authors: Law, NF 
Siu, WC 
Keywords: Blocking artifacts suppression
Feature classification
Post-processing
Structural analysis
Wavelet transform
Issue Date: 2001
Publisher: Elsevier
Source: Signal processing, 2001, v. 81, no. 7, p. 1373-1387 How to cite?
Journal: Signal processing 
Abstract: A successive structural analysis using wavelet transform is proposed to remove the blocking artifacts associated with block-based coding techniques such as JPEG. The successive structural analysis is based on a study of the magnitude of the wavelet coefficients using a set of threshold values. This allows the structural information in an image and the information about the block boundaries to be separated into several classes. A metric is then used to quantify the quality of the reconstruction from each class. During reconstruction, only those classes that correspond to the structural information are retained while classes that correspond to the block boundaries are discarded. Simulation results show that our proposed algorithm can effectively suppress the blocking artifacts without over-smoothing the image details.
URI: http://hdl.handle.net/10397/31498
ISSN: 0165-1684
EISSN: 1872-7557
DOI: 10.1016/S0165-1684(01)00018-4
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