Abstract
This paper presents a improved POCS-based deblocking technique, based on the theory of the projection onto convex sets (POCS) to reduce the blocking artifacts in decoded images. We propose a new smoothness constraint set (SCS) and its projection operator in the wave-let transform (WT) domain to remove unnecessary high-frequency components caused by blocking artifacts. In order to eliminate the blocking artifacts component while preserving the original edge component, we also propose a significant coefficient decision method (SCDM)for fast and efficient performance. Experimental results show that the proposed method can not only achieve a significantly enhanced subjective quality but also increase the PSNR improvement in the reconstructed image.
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© 2006 Springer-Verlag Berlin Heidelberg
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Kwon, GR., Kim, HK., Park, CS., Kim, Y., Ko, SJ. (2006). Improved POCS-Based Deblocking Technique Using Wavelet Transform in Block Coded Image. In: Zhuang, Y., Yang, SQ., Rui, Y., He, Q. (eds) Advances in Multimedia Information Processing - PCM 2006. PCM 2006. Lecture Notes in Computer Science, vol 4261. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11922162_78
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DOI: https://doi.org/10.1007/11922162_78
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-48766-1
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