avs帧内预测解码算法硬件化设计与验证word格式论文.docxVIP

摘 要AVS（Audio Video coding Standard）是我国制定的具有自主知识产权的数字音视频 标准，2006 年正式成为中国音视频领域的国家标准。AVS 标准具有编码效率高、实现 复杂度低、专利许可费低等优点，而且随着目前多媒体领域的广泛应用和国家的大力推 广，AVS 标准具有广阔的市场前景和发展空间。目前在嵌入式领域中，国际上通用的视频硬件解码器设计方案主要有三种：一是以 ASIC 方式设计，该方案优点是解码速度快，但研发时间长、成本高；二是通过 DSP 协 处理器的方式实现，该方案的解码器的灵活性高、可升级，但需要高性能的 DSP；三是 SoC 的设计方案，采用在芯片内部内嵌微控制器和硬件解码加速模块实现，与第二种设 计方案相比，该方案同样具有灵活性高、可升级的特点，而且实现成本低，是比较理想 的视频解码器设计方案。本文研究内容针对 AVS 视频硬件解码器中帧内预测解码算法的设计展开。采用基 于 FPGA 的 SoC 的设计方案，设计 AVS 视频帧内预测解码算法的 IP 模块，并最终通过 解码 AVS 视频流来验证设计的正确性。论文第一章介绍了音视频标准的发展现状、编 码技术、课题的来源及本论文的研究内容；第二章介绍了 AVS 标准中采用的各种技术； 第三章详细介绍了 AVS 帧内预测解码算法 IP 功能模块的设计；第四章介绍了基于 SoC 方案的 AVS 硬件解码器架构和 Avalon 总线协议接口模块的设计；第五章对全文做出了 总结，并对本课题以后的研究进行了展望。关键词：AVS，帧内预测，SoC，FPGA，硬件加速AbstractAVS (Audio Video coding Standard) is developed by China with intellect ual property rights, which becomes nationa l standard in the field of audio and video of China formally in 2006. There are ma ny advantages with AVS standard like high efficiency of coding, low complexity of implementation, low license fees of patent and so on. With a widely used of multimed ia, while promot ing by China gover nment, AVS standard has broad market prospects and broad space for development.Currently, in the field of embedded, there are three ma in design schemes with implementation of video hardware decoder in internationa l. The first scheme is to design aASIC chip，with a fast speed of decoding, but it takes a long time to develop and cost is high;The second scheme is to use a DSP processor to decode video. This kind of video decoder has high flexibility, and can be update. But it needs a DSP with high performa nce; The third scheme is to design a chip with the form of SoC. Inside of this kind of chip, there is a embedded MCU and hardware accelera tor module. To compare with the second scheme, this scheme also has high flexibility and can be update, while needs less cost. So it is a better design scheme.This thesis emphasis on research of intra predica tion decode algor ithm and implementation in ha