节点文献
MPEG4编码器二维DCT变换的FPGA实现及优化
2-D DCT implementation and optimization for MPEG4 encoder based on FPGA
【摘要】 本文提出了一种适用于MPEG4视频编码系统的二维DCT的FPGA设计方案,该方案具有实时、高精度、易于FPGA实现的特点。在设计中,分别对DCT的算法及实现方法进行了分析和选择;在此基础上,对系统的结构进行了优化,提出了一种不同于传统二维DCT系统的新结构。最后对IDCT单元的运算精度进行了验证。
【Abstract】 An FPGA design to 2 dimensions DCT in MPEG4 video compression system is presented. The advantage of this design is: real-time, high accuracy, and adaptive to FPGA implementation. The implement method is adopted based on analysis on DCT arithmetic in this paper. A new system structure is presented, which differs from the traditional structure of video compress coding system. Finally, the computation accuracy of IDCT is verified.
【关键词】 离散余弦变换(及反变换);
现场可编程逻辑器件;
硬件结构;
优化;
精度;
【Key words】 Discrete Cosine Transform (DCT); FPGA; hardware structure; optimization; accuracy;
【Key words】 Discrete Cosine Transform (DCT); FPGA; hardware structure; optimization; accuracy;
- 【文献出处】 电路与系统学报 ,Journal of Circuits and Systems , 编辑部邮箱 ,2005年04期
- 【分类号】TN76
- 【被引频次】17
- 【下载频次】282