The Study And Hardware Design For The H.264 Intra Prediction Algorithm

With the new application's emergence of IPTV and mobile video, it becomes more and more difficult for previous video compression technologies to satisfy many demands of video application gradually. A new video compression standard-H.264 is proposed. It integrates many advantages of the previous standards. And it gets many industries' favor not only by right of its excellent performance and better network friendship, but also as the international standard and candid indiscrimination admission system.Compared with traditional logic circuits and gate arrays, FPGAs have different structures. Small lookup tables are used to achieve combinational logics and unlimited re-programming is allowed in their structures. As FPGAs' performance and flexibility, and their new simple method of design and implementation, FPGAs become the optimized solutions in many emerging DSP application fields, such as digital communication and video processing and so on.After detailed introducing H.264, this paper focuses on the intra prediction algorithm. Based on analyzing the existing fast intra prediction algorithm, a fast intra prediction algorithm is proposed which chooses the previous prediction mode as the current model's preferred mode. And it was verified by using MATLAB. Experiments show that the fast algorithm proposed has a certain degree of superiority and practical value. This paper studies the FPGA technology also, and then combines the H.264 intra prediction to realize the intra predictor by using FPGA. In addition, a LCD display module is designed to show the best prediction mode and its cost value. Thereby, a complete FPGA-based intra predictor is done in this paper. And it's verified by C language.Finally, the research results are summarized and the future works are proposed in the paper.