Simple and fast subband de-blocking technique by discarding the high band signals

Ling, Wing-Kuen and Tam, Kwong-Shun (2001) Simple and fast subband de-blocking technique by discarding the high band signals. In: The Second International Conference on Wavelet Analysis and Its Applications, December 2001, Hong Kong.

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Abstract

In this paper, we propose a simple and fast post-processing de-blocking technique to reduce blocking artifacts. The block-based coded image is first decomposed into several subbands. Only the low frequency subband signals are retained and the high frequency subband signals are discarded. The remaining subband signals are then reconstructed to obtain a less blocky image. The ideas are demonstrated by a cosine filter bank and a modulated sine filter bank. The simulation result shows that the proposed algorithm is effective in the reduction of blocking artifacts.

Item Type:Conference or Workshop Item (Paper)
Additional Information:In this paper, we propose a simple and fast post-processing de-blocking technique to reduce blocking artifacts. The block-based coded image is first decomposed into several subbands. Only the low frequency subband signals are retained and the high frequency subband signals are discarded. The remaining subband signals are then reconstructed to obtain a less blocky image. The ideas are demonstrated by a cosine filter bank and a modulated sine filter bank. The simulation result shows that the proposed algorithm is effective in the reduction of blocking artifacts.
Keywords:subband deblocking, image processing
Subjects:H Engineering > H610 Electronic Engineering
Divisions:College of Science > School of Engineering
ID Code:3118
Deposited By:INVALID USER
Deposited On:06 Aug 2010 09:30
Last Modified:13 Mar 2013 08:43

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