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    • 4. 发明申请
    • METHOD AND APPARATUS FOR GENERATING CODED PICTURE DATA AND FOR DECODING CODED PICTURE DATA
    • 用于生成图像数据和解码图像数据的方法和装置
    • WO2006000504A1
    • 2006-01-05
    • PCT/EP2005/052343
    • 2005-05-23
    • THOMSON LICENSINGHERPEL, CarstenKEESEN, Heinz, Werner
    • HERPEL, CarstenKEESEN, Heinz, Werner
    • H04N7/26
    • H04N19/577H04N19/51H04N19/517H04N19/527H04N19/533H04N19/573
    • Motion compensated temporal prediction is well-known for redundancy reduction in video signal compression. A prediction error signal and a motion vector for a current block are transmitted, describing the location of the predictor block in the reference picture. A problem solved by the invention is to encode and decode video signals using less or no mo- tion vector data side information. This is achieved through a temporal prediction which exploits common knowledge available in both encoder and decoder, requiring that the decoder performs a motion estimation, too. A common baseline motion estimation process is used at both encoder and decoder on the same set of video data that have already been compressed before and, hence, are available at both encoder and decoder, leading to identical motion parameters being generated in the decoder. These common motion parameters are used for generating a default temporal prediction without the need to transmit related motion vectors from the encoder to the decoder.
    • 运动补偿时间预测是视频信号压缩的冗余减少是众所周知的。 发送用于当前块的预测误差信号和运动矢量,描述参考图像中预测块的位置。 本发明解决的问题是使用较少或没有运动矢量数据侧信息对视频信号进行编码和解码。 这是通过利用编码器和解码器中可用的常见知识的时间预测来实现的,要求解码器也执行运动估计。 在编码器和解码器上的同一组视频数据上使用公共的基线运动估计过程,该集合的视频数据已经在编码器和解码器之前被压缩,并且因此在编码器和解码器处可用,导致在解码器中产生相同的运动参数。 这些常见运动参数用于产生默认时间预测,而不需要从编码器向解码器发送相关的运动矢量。