一种基于背景抑制的星空图像增强方法  

Star map enhancement method based on background suppression

作　　者：陈洪[1] 张延鑫[2] 朱祥玲[1] 王学梅 戚文香 

机构地区：[1]西昌卫星发射中心技术部,四川西昌615000 [2]北京跟踪与通信技术研究所,北京100094 [3]北京空间信息中继传输技术研究中心,北京100094 [4]酒泉卫星发射中心,甘肃酒泉732750

出　　处：《解放军理工大学学报（自然科学版）》2015年第2期109-113,共5页Journal of PLA University of Science and Technology(Natural Science Edition)

摘　　要：针对高空观测图像目标尺寸小、信噪比低以及背景和杂波干扰严重的问题,提出了一种基于背景和杂波抑制的星空图像增强方法。建立了星空背景图像增强算法模型,利用不同形状结构元素的形态学滤波方法对原始星空图像进行背景和杂波抑制,将多个支路形态学滤波的结果加权平均,采用双平台直方图均衡化方法进一步对观测目标进行图像增强。在此基础上对星空背景图像增强效果进行计算机仿真验证,并对增强后图像的信噪比和背景抑制因子进行计算。结果表明,采用该方法能够控制星空背景和杂波,改善图像的对比度,使目标细节更为丰富,便于后续目标检测与跟踪。To solve the problems such as small target size, low signal to noise ratio（SNR）, serious interfer- ence of background and clutter, a star map enhancement method was presented based on background and clutter suppression. The model of star background image enhancement was established and multi-structure elements adopted in the morphology filter to suppress the star background and clutter. The plateaus histo- gram image equalization algorithm was also adopted in the weighed average of multiple morphology filters to improve the further image resolution. With this standing, the image enhancement effects were simula- ted, and SNR and background suppression factor of enhanced image calculated. The results show that the star background and clutter can be suppressed to a great extent, that the contrast ratio of image is im- proved remarkably,and that in the image the target is eabier to be tracked down and detected.

关 键 词：星空背景 形态学滤波 平台直方图均衡化 信噪比 

分 类 号：TN247.34[电子电信—物理电子学]