Abstract
Improving side information quality has been a research focus for distributed video coding in the last years. However, without access to the current frame, the common used motion-compensated temporal interpolation (MCTI) in spatial domain at the DVC decoder meets a hard challenge. This paper introduces a novel MCTI-ODWT algorithm to generate better side information frame, which utilizes overcomplete discrete wavelet transform (ODWT) not only to reduce the noise caused by dense motion field error, but also to avoid the noise resulted from the sensitivity of high frequency components to the inaccurate motion vectors by using the mean square error of difference between the adjacent decoded frames as a judge of which subbands level MCTI is applied to. The analysis and experimental results both show that the proposed algorithm is effective to produce better SI frame than MCTI in spatial domain with a gain up to 4dBs.
This work was supported by National Science Foundation of China (Grant NO 90718011).
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Fang, S., Yuan, C., Zhong, YZ., Cai, HL. (2009). Reducing the Motion-Compensated Temporal Interpolation Noise of DVC Side Information by ODWT. In: Muneesawang, P., Wu, F., Kumazawa, I., Roeksabutr, A., Liao, M., Tang, X. (eds) Advances in Multimedia Information Processing - PCM 2009. PCM 2009. Lecture Notes in Computer Science, vol 5879. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-10467-1_103
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DOI: https://doi.org/10.1007/978-3-642-10467-1_103
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