The Key Technology Research Based On New Generation Video Compression Coding Standard H.264

H.264 is a new video compression standard being jointlt developed by ITU_T Video Coding Experts Group and ISO/IEC Motion Picture Expert Group,which has many different feayures so that its efficiency is imprived through added flexibility and functionality.The thesis introduction the realization of video codec based on H.264 and makes some experiments about the new points of H.264 .For example ,it uses various blocks and multiple reference frames for motion estimation ,high-precision sub-pel motion vetors for increasing of motion estimation accuracy and integer transform instead of DCT transform .The main achievement of this thesisi include: 1.The characteristics of integer transform is analyzed detailedly in this thesis .Combining with the special instructions of TMS320C6416 DSP ,we put forward a new program method to avoid coding waste in row transform ,on which row transform and column transform can share the same segment ,on which row transform and column transform can share the same segment of procedure code.With the new method ,the calculation speed increases near 52%. 2.The motion vetors in near blocks and the points in same block between sequent frames are correlated. Considering these characteristics ,we improved the diamond search algorithm.Experimental results show that the improved algorithm excels other original algorithms in speed and veracity. 3.Study the theory of the intra prediction and result of simulation experiment is give. 4.Analyze the theory of the Deblocking loop filter System in H.264 and compare it with similar systems in other video standards.Results of simulation experiment prove its better performance in proving picture quality. 5.Referring to the H.264 test model long term number4 JM and the basic coding framework of the standard H.263,we developed the software codec of H.264 with VC++ .The flow chart and the key of program are given.