计算机工程与应用2012，Vol.48Issue(6)：65-68,4.DOI:10.3778/j.issn.1002-8331.2012.06.020
数字图像DCT变换的FPGA实现
Implementation of digital image DCT based on FPGA
摘要
Abstract
This paper implements Discrete Cosine Transform (DCT) of image based on Field Programmable Gate Array (FPGA), in order to resolve the problem that software method cannot meet the demand of real-time, due to its large computation. Its design adopts row-column composition structure of 2D-DCT, and introducs double RAM structure between two 1D-DCT, whose computational paral-lelity can be guaranteed by Ping-Pong operation, and computational efficiency also can be improved. The whole module is modeled by Verilog HDL, its logic functions is verified by ModelSim. The design is successfully compiled on Quartus II and finally realized on Altera EP2C70F896C6 chip after structure optimization. The results show this design has exact functions and thus it can be used as an independent unit integrated into real-time system processing image.关键词
二维离散余弦变换(DCT)/现场可编程门阵列(FPGA)/硬件结构/乒乓操作Key words
two Dimension Discrete Cosine Transform (2D-DCT)/Field Programmable Gate Array (FPGA)/hardware structure/Ping-Pong operation分类
信息技术与安全科学引用本文复制引用
刘方明,潘晓中,杨晓元,苏光伟..数字图像DCT变换的FPGA实现[J].计算机工程与应用,2012,48(6):65-68,4.基金项目
国家自然科学基金(No.61103230) （No.61103230）
武警工程大学基础基金(No.wjy201027). （No.wjy201027）
