基于DMD红外视景图像自适应增强算法研究  

Study on Self-adaptive Image Enhancement Method for IR Simulation Images by DMD

作　　者：袁宏武[1] 吴令夏 崔怀超[2] 李小明[1] 韩裕生[1] 

机构地区：[1]陆军军官学院光电工程重点实验室,安徽合肥230031 [2]陆军军官学院五系,安徽合肥230031

出　　处：《红外技术》2012年第8期467-471,共5页Infrared Technology

基　　金：陆军军官学院基金;基金编号:KYJJ-091

摘　　要：针对数字微镜阵列DMD(Digital Mirror Device)红外视景图像存在对比度低、非均匀性等问题,提出了一种基于调制传递函数MTF(Modulation Transfer Function)的自适应增强算法,首先通过检测图像线性边缘和提取最佳区域获取线扩展函数,然后利用线扩展函数与MTF间的关系完成MTF的自动检测,最后运用维纳滤波完成图像复原增强处理。仿真实验表明,该算法能有效提高对比度和降低图像的非均匀。To solve the problems of low contrast and non-uniformity of infrared simulation images produced by Digital Mirror Device（DMD）, a self-adaptive enhancement method is proposed based on Modulation Transfer Function（MTF）. Firstly, by detecting the linear edge of IR simulation images and extracting optimal region as knife-edge, Line Spread Function is calculated. Then, the automatic detection of MTF is completed by making use of the relationship between LSF and MTF. Finally, the classic Weiner filter is used for IR simulation images restoration. Simulation showed that the method increases the contrast and decreases the non-uniformity of IR simulation images.

关 键 词：红外视景图像 数字微镜阵列 调制传递函数 线扩展函数 刀刃边缘 维纳滤波 

分 类 号：TP312[自动化与计算机技术—计算机软件与理论]