@article{ART001641509},
author={Kyung Nam Park},
title={Quantization Noise Reduction Algorithm Using Wavelet Coefficients Characteristic and Signal Adaptive Filter},
journal={Journal of Knowledge Information Technology and Systems},
issn={1975-7700},
year={2012},
volume={7},
number={1},
pages={129-137}
TY - JOUR
AU - Kyung Nam Park
TI - Quantization Noise Reduction Algorithm Using Wavelet Coefficients Characteristic and Signal Adaptive Filter
JO - Journal of Knowledge Information Technology and Systems
PY - 2012
VL - 7
IS - 1
PB - Korea Knowledge Information Technology Society
SP - 129
EP - 137
SN - 1975-7700
AB - In this paper, we propose a postprocessing algorithm, which reduces the quantization noises in block-coded images by using wavelet coefficients and signal adaptive filter. The proposed algorithm performs block classification as smooth region and complex region using the magnitude and phase of wavelet transform coefficients. In smooth region on the block boundary filtering is perform to remove grid noise. Complex region is classified into edge and staircase noise by using the variation ratio of wavelet coefficient and remove staircase noise only. We removes ringing artifacts using signal adaptive filter in edge blocks of complex region. Simulation results show that the proposed algorithm gives better results than the conventional algorithm from both a subjective and an objective viewpoint.
KW - Blocking Artifact;grid noise;ringing artifacts;LMM;SAF
DO -
UR -
ER -
Kyung Nam Park. (2012). Quantization Noise Reduction Algorithm Using Wavelet Coefficients Characteristic and Signal Adaptive Filter. Journal of Knowledge Information Technology and Systems, 7(1), 129-137.
Kyung Nam Park. 2012, "Quantization Noise Reduction Algorithm Using Wavelet Coefficients Characteristic and Signal Adaptive Filter", Journal of Knowledge Information Technology and Systems, vol.7, no.1 pp.129-137.
Kyung Nam Park "Quantization Noise Reduction Algorithm Using Wavelet Coefficients Characteristic and Signal Adaptive Filter" Journal of Knowledge Information Technology and Systems 7.1 pp.129-137 (2012) : 129.
Kyung Nam Park. Quantization Noise Reduction Algorithm Using Wavelet Coefficients Characteristic and Signal Adaptive Filter. 2012; 7(1), 129-137.
Kyung Nam Park. "Quantization Noise Reduction Algorithm Using Wavelet Coefficients Characteristic and Signal Adaptive Filter" Journal of Knowledge Information Technology and Systems 7, no.1 (2012) : 129-137.
Kyung Nam Park. Quantization Noise Reduction Algorithm Using Wavelet Coefficients Characteristic and Signal Adaptive Filter. Journal of Knowledge Information Technology and Systems, 7(1), 129-137.
Kyung Nam Park. Quantization Noise Reduction Algorithm Using Wavelet Coefficients Characteristic and Signal Adaptive Filter. Journal of Knowledge Information Technology and Systems. 2012; 7(1) 129-137.
Kyung Nam Park. Quantization Noise Reduction Algorithm Using Wavelet Coefficients Characteristic and Signal Adaptive Filter. 2012; 7(1), 129-137.
Kyung Nam Park. "Quantization Noise Reduction Algorithm Using Wavelet Coefficients Characteristic and Signal Adaptive Filter" Journal of Knowledge Information Technology and Systems 7, no.1 (2012) : 129-137.
