Residue sampling for image and video compression

Woo-Shik Kim; Hyun Mun Kim

doi:10.1117/12.631383

24 June 2005 Residue sampling for image and video compression

Woo-Shik Kim, Hyun Mun Kim

Proceedings Volume 5960, Visual Communications and Image Processing 2005; 596002 (2005) https://doi.org/10.1117/12.631383
Event: Visual Communications and Image Processing 2005, 2005, Beijing, China

Abstract

The chrominance subsampling has been widely used for the image and video compression. However, this can cause color distortion and image quality degradation. We developed a new sampling method in which the residual image after intra or inter prediction is subsampled instead of the original image subsampling. Since the residual image contains fewer information than the original image does generally, the information loss is reduced when the residual image is downsampled. Also the upsampling procedure is much less sensitive to the filtering methods selected as demonstrated in the experimental results. So we can apply a simple filtering to reduce the complexity. The experimental results show the effectiveness of the proposed sampling method. This sampling method can be further improved by applying adaptively according to the statistics of each block, and can be applied to the RGB image directly without color conversion.

Citation Download Citation

Woo-Shik Kim and Hyun Mun Kim "Residue sampling for image and video compression", Proc. SPIE 5960, Visual Communications and Image Processing 2005, 596002 (24 June 2005); https://doi.org/10.1117/12.631383

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