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

By Wing-Kuen Ling and Kwong-Shun Tam


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

Topics: H610 Electronic Engineering
Publisher: Springer
Year: 2001
OAI identifier:

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