Research Of Inter Frame In H.264 Video Coding

H.264 is the newest international video coding standard, joint developed by ITU-T and ISO/IEC, a great many of novel algorithm components enhance the coding efficiency significantly, while dramatically increase the computational complexity than the previous standards. How to reduce its complexity and accelerate the execution speed while maintaining the outstanding compression performance is a crucial problem in the H.264 application.In this thesis, the encoding principle of H.264 and its main function modules and new technologies being adopted are introduced. A fast block mode selection algorithm focusing on the tree structured motion estimation is proposed in H.264, successive selecting a proper inter block mode fast by a dynamic threshold and subset comparison prediction. And then a new adaptive prediction algorithm for motion vector based on the central trend is proposed for getting more accurate motion estimation point and more appropriate searching fields. At last an algorithm about decision of all-zero blocks is proposed by calculating the SAD, so that decrease the scalar of interger transform and quantization with inter code. Experimental results show that, the proposed methods can improve the coding speed and the capability of encoding loses quite little.Some ideas for the new development and research of H.264 video coding are proposed at last.