Frequency Based Down-sampling/Up-sampling Algorithm for Chrominance Component
Down-sampling filter is employed to obtain 4:2:0 chroma format and up-sampling filter is used for display. Currently, the existing algorithms are processed in spatial domain. In this paper, a frequency domain based down-sampling and up-sampling filter is proposed. With this algorithm, more original information can be preserved and aliasing can be avoided in chrominance components. Simulation results show that average 0.21dB coding gain can be achieved by using the proposed algorithm compared with MPEG-4 filter.
DCT chrominance sampling filter RGB
Xu Yang Yilin Chang Junyan Huo Bingbing Li
State Key Laboratory of ISN Xidian University Shaanxi Province, Xian,710071 China
国际会议
成都
英文
452-455
2010-06-12（万方平台首次上网日期，不代表论文的发表时间）