Multiwavelet video coding based on DCT time domain filtering

Authors:
Zhijun Fang;Guihua Luo;Jucheng Yang;Shouyuan Yang
Affiliations:
Institute of Digital Media, School of Information Technology, Jiangxi University of Finance & Economics, Nanchang, Jiangxi, China;Institute of Digital Media, School of Information Technology, Jiangxi University of Finance & Economics, Nanchang, Jiangxi, China;Institute of Digital Media, School of Information Technology, Jiangxi University of Finance & Economics, Nanchang, Jiangxi, China;Institute of Digital Media, School of Information Technology, Jiangxi University of Finance & Economics, Nanchang, Jiangxi, China
Venue:
Transactions on Edutainment VII
Year:
2012

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Abstract

To improve the video encoding efficiency and deal with the real-time demerits of the multiwavelet time-domain filtering in the 3D multiwavelet, a multiwavelet video coding scheme based on DCT(Digital Cosine Transform) time-domain filtering is proposed in this paper. Firstly, the multiwavelet transformation is applied to get the spatial domain of the frame in video. Then, 3D transformation coefficients are obtained by the DCT time-domain filtering on the multiwavelet coefficients. Finally the 3D transformation coefficients are coded to be embed bitstream by using the symmetric 3-D SPIHT(Set partitioning in hierarchical trees). The experimental results indicate that the new method outperforms those based on 3D DMWT(discrete multiwavelet transform) in terms of PSNR(peak signal to noise ration) with better video quality at the same compression ratio, and it shows lower complexity.