实时视频编码的二维DCT/IDCT的实现  

Implementation of two-dimensional DCT/IDCT for real-time video encoding

作　　者：山洪刚[1] 郑南宁[1] 杨晓衡 

机构地区：[1]西安交通大学人工智能与机器人研究所,陕西西安710049

出　　处：《电视技术》2002年第12期4-6,12,共4页Video Engineering

摘　　要：用FPGAFLEX10K130实现了二维离散余弦变换和逆变换(DCT/IDCT),结构设计采用行列分解法,乘法器采用移位求和的方法实现,并且采用流水线结构设计,提高处理核的性能,系统时钟达到33MHz,计算精度满足CCITT标准要求。This paper describes the implementation of two-dimensional forward and inverse Discrete Cosine Transform(DCT and IDCT)using the ALTERA FLEX10K130FPGA.The Architecture is based on the conven-tional row-column decomposition method.The use of multiplier based on the shift-sum and pipelining reduces the hardware requirement and achieves high-speed operation.The clock frequency is33MHz.Furthermore,this2-D DCT scheme satisfies the accuracy specification of CCITT recommendation.[

关 键 词：视频编码 二维DCT IDCT 离散余弦变换 现场可编程门阵列 图像压缩 二维 逆变换 

分 类 号：TN919.81[电子电信—通信与信息系统]