基于图像分块的CL4小波实时处理及FPGA实现  

CL4 wavelet real-time processing and FPGA realization based on image blocking

作　　者：李小明[1,2] 刘海燕 

机构地区：[1]陆军军官学院 [2]偏振光成像探测技术安徽省重点实验室 [3]73101部队52分队

出　　处：《现代电子技术》2015年第8期16-18,21,共4页Modern Electronics Technique

基　　金：国家自然科学基金资助项目(40876095)

摘　　要：CL4矢量小波具有的一系列优异特性,在红外图像弱小目标预处理中应用广泛,但它的实时性使其应用受到限制。在分析了CL4小波算法结构基础上,研究了小波系数的量化方法,提出一种将原始图像分块小波处理的方法,在FPGA中采用流水算法实现,并对关键算法进行了Model Sim仿真,提高了CL4小波算法的实时性。CL4 wavelet has some excellent characters and is widely applied to infrared image processing of small weak targets,but its worse realtime performance limits its application. The quantification method of wavelet coefficient is researched on the basis of structure analysis of CL4 wavelet algorithm. A method which blocked the original image into some sections is proposed according to CL4 algorithm,which is realized by the pipeline algorithm used in FPGA. The key algorithm was simulated with ModelSim. The method improved realtime performance of CL4 algorithm.

关 键 词：图像分块 矢量小波 CL4 FPGA 

分 类 号：TN919.34[电子电信—通信与信息系统] TP391[电子电信—信息与通信工程]