摘要
H.264标准是ITUT/VCEG和ISO/MPEG委员会联合制定的视频通信新编码标准,它在继承现有混合编码视频标准分块变换、运动估计/补偿、量化和熵编码等成熟技术的基础上,还采用了多种新技术,保证了编码的有效性。本文介绍了最新H.264标准中的差分编码、块匹配运动预测法、归一化准则、可变尺寸块运动补偿、多假设运动补偿。最后,对运动补偿中不同的块大小编码方法进行了实验分析,实验结果表明:对于通常视频内容,选择8×8及更大的分块模式、1/4像素运动补偿精度和混合编码,能够获得最经济的压缩效果。
H. 264 is a new generation video coding standard being established up by ITUT VCEG and ISO/IEC MPEG for video communication. On the basis of mature techniques such as transform on block, motion esteem action/ com sensation, quantization and entropy coding,H. 264 employ some new techniques, which ensure the coding effi- ciency. First We introduce the H. 264 coding standard, differential encoding, Cake marry movement Predicted method, normalisation norm, Variable dimensions,motion compensation, Much assumption motion compensation. In the end, experiments are conducted on different block size coding methods. The experimental results proved that the selection of block partition modes that are 8×8 and larger, 1/4-pixel resolution motion estimation and universal vari- able length coding can achieve the most economical compression results for the common video contents.
出处
《计算机科学》
CSCD
北大核心
2005年第5期109-111,127,共4页
Computer Science
