An Efficient Color Video Coding Method Based on DWT and VQ
This paper presents an efficient color video coding method based on vector quantization(VQ)and discrete wavelet transform(DWT).In order to remove the inherent correlation among the three components of color images,the input frames are first transformed from the RGB space to the YUV space.The luminance Y image is then coded based on classified tree-structure vectors and global codebook scheme.The globaI codebook designed can adaptively update and replace the code words of the cookbook with the change of scene according to the inter-frame correlation and the frequency of code words.The coding of chrominance components of U and V images is achieved by using sub-sampling operation and average computation based on human visual system(HVS)characteristics.The experimental results show that while maintaining the acceptable recovery quality,the proposed coding scheme can provide high coding emciency. especially applying to such scenarios as videoconference and video observation of underwater scenes.
Qing-Zhong LI Yong-Xia ZHAO Dong-Xiao HE
国际会议
The International Conference Information Computing and Automation(2007国际信息计算与自动化会议)
成都
英文
1285-1288
2007-12-19（万方平台首次上网日期，不代表论文的发表时间）