电子学报2001，Vol.29Issue(1)：57-60,4.
基于频域的MPEG-2码率转换技术及其码率控制策略
A Frequency Domain MPEG-2 Drift-Free Transcoder and Its Rate Control Strategy
摘要
Abstract
The methods of calculating the DCT coefficients of the matching blocks from the derived DCT coefficients of the blocks in the reference frames under three different prediction modes of MPEG-2 is discussed, based on which a drift-free MPEG-2 transcoder that achieves motion compensation in the frequency domain is proposed. The rate-distortion optimization is applied to the rate control strategy to get the optimal quantization parameter of each frame, with its fast algorithm further simplified on the basis of GBFOS method. Our approach can lead to the solutions of satisfactory accuracy but only with a fraction of the complexity of the existing algorithms.关键词
MPEG-2/码率转换/率失真优化分类
信息技术与安全科学引用本文复制引用
范晓东,潘健,余松煜..基于频域的MPEG-2码率转换技术及其码率控制策略[J].电子学报,2001,29(1):57-60,4.
