摘要
针对提高嵌入式视频设备图像清晰度的需求,结合H.264视频压缩技术和嵌入式技术研制了一种高清视频编解码器,提出了基于以太网的嵌入式高清视频编解码器的设计方案,以Hi3517和Hi3531为核心,设计了高清视频编解码器的硬件;在Linux开发环境下采用C语言编写了高清视频编解码器的软件;研究了H.264帧内预测算法,提出了一种针对本文中视频编解码器的H.264帧内预测优化算法.结果表明,该高清视频编解码器在没有明显降低图像质量的前提下,显著减少了帧内预测算法的复杂度,提高了视频编码的有效性和实时性.搭建了基于以太网的嵌入式高清视频编解码器的测试平台,并且进行了调试与实验.实验结果表明,该高清视频编解码器可以实时地完成对高清视频的采集、编码、传输、解码和播放.
According to the demand of improving image resolution in the embedded video equipment, combined with H.264 video compression technology and embedded technology, an embedded high-definition video codec based on ethernet was designed with Huawei Hisilicon multimedia processor as core chip in hardware platform; in the Linux development environment, C language is used to write the software of the high definition codec. Based on the H.264 intra-frame prediction algorithm, an optimization algorithm of H.264 intra-frame prediction is put forward. The result shows that this high-definition video codec can reduce the complexity of the intra-frame prediction without significantly reduced under the premise of image quality, and finally improve the effectiveness of video coding in real time. An embedded ethernet-based HD video codec test platform is built and debugging and the experiment are carried out, the results show that the video codec has a good way to implement of encoding and decoding with HD video and also transmission and broadcasting.
出处
《天津工业大学学报》
CAS
北大核心
2015年第3期57-61,共5页
Journal of Tiangong University
基金
国家自然科学基金青年基金项目(61302062)
