机载彩色图像增强系统设计与实现  

Design and realization of the airborne color image enhancement system

作　　者：尹传历[1] 丁策[1,2] 

机构地区：[1]中国科学院航空光学成像与测量重点实验室 中国科学院长春光学精密机械与物理研究所,长春130033 [2]中国科学院研究生院,北京100039

出　　处：《仪器仪表学报》2013年第S1期40-43,共4页Chinese Journal of Scientific Instrument

基　　金：国家高技术研究发展计划(863计划)(No.2008AA121803)资助项目

摘　　要：针对传统多尺度Retinex算法增强的图像容易出现光晕伪影的缺点,提出了一种快速多分辨率变分Retinex图像增强算法,首先进行对数运算,构建金字塔,然后分层计算光照估计,最后进行gamma修正。并设计和实现了图像处理平台,以高性能DSP芯片TMS320C6455作为中央处理器,外围电路逻辑控制由现场可编程门阵列FPGA构成。实际采集图像证明,本系统增强图像细节清晰,整体画面自然,有效地抑制了光晕伪影现象,增强效果良好,并且算法运行速度快,执行效率高,可满足工程项目的要求。According to the problem of the halo of traditional multi-scale Retinex algorithm in the enhancement images, a new fast image enhancement algorithm based on multi-resolution variation Retinex is presented. First, the logarithmic is calculated, and the pyramid is built. Then the layer lighting is estimated. Finally the enhancement image is obtained by gamma correction. An embedded high speed image enhancement processing system on high performance DSP TMS320DM6455 and FPGA was designed to the practical application. Experimental results with real images shown that the system can naturally enhance overall image and obtain better enhancement images, the halo problem is prevented, and the running speed of the program is fast, so it can meet the requirements in the project.

关 键 词：图像增强 嵌入式系统 多尺度RETINEX 金字塔 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]