Recovery of incorrectly transmitted DWT-coded images

Yan Niu; Ashraf Kassim

doi:10.1117/12.502868

23 June 2003 Recovery of incorrectly transmitted DWT-coded images

Yan Niu, Ashraf Kassim

Proceedings Volume 5150, Visual Communications and Image Processing 2003; (2003) https://doi.org/10.1117/12.502868
Event: Visual Communications and Image Processing 2003, 2003, Lugano, Switzerland

Abstract

This paper presents a post-processing error concealment technique for handling transmission of DWT image coefficients. Our technique recovers the lost regularity information as well as irregularity information. First, the Harmonic Function is employed for overall smoothness recovery. Next, in order to enhance local edges, the spatial coherence between DWT subbands is explored. The amplitudes of those detected singular points are then modified, according to the regions they belong to. Our proposed method reveals edges from blurred areas due to smooth recovery accurately.

Citation Download Citation

Yan Niu and Ashraf Kassim "Recovery of incorrectly transmitted DWT-coded images", Proc. SPIE 5150, Visual Communications and Image Processing 2003, (23 June 2003); https://doi.org/10.1117/12.502868

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