【作者】 石迎波；

【导师】 吴成柯；

【作者基本信息】 西安电子科技大学 ， 通信与信息系统， 2005， 硕士

【摘要】 在信息技术飞速发展的今天，多媒体通信成为人类新兴的交流手段。其中，携带着巨大的信息量的数字视频在信息社会中发挥着越来越重要的作用。由于计算机技术、通信技术、微电子技术、网络技术的进步，实时视频压缩和传输成为可能，人们可以在此基础上享受技术进步带来的便利。 本文介绍了作者在视频压缩编码及其硬件实现方面的研究。作者研究了ISO／IEC MPEG-4视频编码标准，并在该标准的基础上提出了一种编码器的SOC实现，采用FPGA和ARM构建demo系统，对其中的DCT／IDCT、量化反量化及帧内预测进行了深入研究，并在理论的基础上提出了其硬件实现方案。 本文介绍了MPEG-4标准的基本原理，MPEG-4视频编码器总体框架及各部分功能，MPEG-4DCT／IDCT、量化反量化及帧内预测的原理及硬件实现；最后对H．264／MPEG-4 AVC视频压缩编码标准做了初步研究，并论述了其中的整数变换及帧内预测编码。更多还原

【Abstract】 With the rapid development in the area of information technology, multimedia communication has been a new way of human intercommunion. Specially, digital video plays a more and more important role in information society. The advancements of computer technology, communication technology, microelectronics technology, network technology make real-time video compression and transportation possible. Consequently, People enjoy the convenience made by technology advances.This dissertation presents the study of several issues in video coding and its hardware implementation. A novel system on chip(SOC) is proposed based on the ISO/IEC MPEG-4. We do this by adopting FPGA plus ARM. the FPGA chip deals with all procedures in MPEG-4 video compression system, such as motion estimation, DCT/IDCT, and picture reconstruction, variable length coding, bit stream multi-complex, etc;while the ARM CPU deals with rate control and the parameters intializtion of the whole coding system. Some key techniques, such as DCT/IDCT、 quantization/inverse quantization and intra DC/AC prediction, are studied in detail. The hardware design of witch is presented based on theory.In this dissertation, we describe the basic principle of MPEG-4, system framework of MPEG-4 encoder and component function, DCTQ principle and hardware implementation. Some simulation results and practical results are shown;Finally a roughly study of H.264/MPEG-4 AVC is presented, specially,integer transfor and intra prediction are studied in detail.更多还原