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An efficient POCS-based post-processing technique using wavelet transform in HDTV
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AI
DOI：10.1109/TCE.2005.1561857.png)
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Abstract
En 中文
In this paper, we propose a new post-processing method, based on the theory of the projection onto convex sets (POCS) to reduce the blocking artifacts in digital high definition television (HDTV) decoded images. We propose a new smoothness constraint set (SCS) and its projection operator in the wavelet transform (WT) domain to remove unnecessary high frequency components caused by blocking artifacts. We also propose a new method to find and preserve the original high frequency components of the image edge. Experimental results show that the proposed method can not only achieve a significantly enhanced subjective quality, but also exhibit the PSNR improvement in the. output image(1).
Keywords:
post-processing
POCS
SCS
QCS
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10.9
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5.3K
Citations:
6.8K
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