Controlled temporal Haar transform for video coding

In the context of video coding, temporal wavelets represent an interesting approach because of their low complexity, encoder-decoder symmetry and multiresolution nature. However, their use at low bit-rate is limited by severe artifacts called "ghost" artifacts. In this paper we propose a c...

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Bibliographic Details
Main Authors: Reichel, J., Ziliani, F.
Format: Conference Proceeding
Language:English
Subjects:
Discrete cosine transforms
Image coding
PSNR
Spatial resolution
Transform coding
Video coding
Video compression
Video sequences
Wavelet domain
Wavelet transforms
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Summary:In the context of video coding, temporal wavelets represent an interesting approach because of their low complexity, encoder-decoder symmetry and multiresolution nature. However, their use at low bit-rate is limited by severe artifacts called "ghost" artifacts. In this paper we propose a controlled temporal wavelet transform which overcomes these artifacts and enables the practical use of temporal wavelets at low bit-rates. The improvements compared to standard approaches are measured in terms of PSNR, and visual quality.
ISSN:1522-4880
2381-8549
DOI:10.1109/ICIP.2003.1246793