Visual assessment for the quantization error in wavelet based monochrome videos

Mei, L and Wu, H 2005, 'Visual assessment for the quantization error in wavelet based monochrome videos', in H. Barlow (ed.) Proceedings of the TENCON 2005 IEEE Region 10 Conference, Melbourne, 21-24 November 2005.


Document type: Conference Paper
Collection: Conference Papers

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Title Visual assessment for the quantization error in wavelet based monochrome videos
Author(s) Mei, L
Wu, H
Year 2005
Conference name TENCON IEEE Region 10 Conference
Conference location Melbourne
Conference dates 21-24 November 2005
Proceedings title Proceedings of the TENCON 2005 IEEE Region 10 Conference
Editor(s) H. Barlow
Publisher IEEE
Place of publication Melbourne
Abstract The investigation of the discrete wavelet transform (DWT) based video coder is still undergoing in the literature. One of the open problems to be solved is the perception to the quantization noise in different subbands in the DWT domain. This is a critical issue for the development of a better motion compensation (MC) scheme. An experiment and relevant results analysis are presented in this paper to address the above issue. Monochrome video sequences of natural scenes are used in the experiment therefore the so-called masking effects can be taken into account in the decision of the sensitivity to the noise hidden in the DWT domain. The preliminary results show that the most sensitive subbands are those in the lowest three resolution levels under a five-levels decomposition scheme. The further analysis proves that the distribution of the sensitivity to each individual subband has been shifted by the context of the video.
Subjects Built Environment and Design not elsewhere classified
Keyword(s) visual perception
DWT
video
analysis
DOI - identifier 10.1109/TENCON.2005.301142
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