基于测试图像的背景杂波量化尺度评价  

Evaluation of Metrics for Quantifying Background Clutter Based on Testing Image

作　　者：刘鑫[1] 张建奇[1] 杨翠[1] 常洪花[1] 吴洁[1] 

机构地区：[1]西安电子科技大学技术物理学院,西安710071

出　　处：《光电工程》2010年第11期115-120,共6页Opto-Electronic Engineering

基　　金：国家自然科学基金项目资助(60777042);高等学校博士学科点专项科研基金(20070701020)

摘　　要：为了合理量化光电图像的背景杂波,针对采集的测试图像,用边缘概率尺度、统计方差尺度和相位相关尺度等三种背景杂波尺度进行了计算。以目标获取性能统计结果为基础,对这三种尺度的性能进行了验证。研究结果表明边缘概率尺度性能比较稳定;统计方差尺度的性能受图像中灰度起伏的影响比较大,对于背景的统计方差均值与目标的显著性不一致的场景,不适于用该尺度进行杂波量化;而相位相关尺度的性能受均匀背景的影响比较大,更适用于整幅图像所含信息量比较大的情况。In order to quantify background clutter reasonably,some collected images had been evaluated by using three metrics of background clutter.The metrics consisted of the probability-of-edge,the statistical-variance and the phase-correlation.The performance of these metrics was verified with the statistical results of target acquisition.It is demonstrated that the metric of probability-of-edge is more stable than others.Moreover,the fluctuation of the gray value in the image has a great effect on the performance of statistical-variance metric and it is not suitable to quantify the background clutter for the scene in which the mean of statistical variance of the background does not consist with the saliency of the target.And the homogeneous background has a great influence on the performance of phase-correlation metric and it is more suitable to quantify the background clutter for the scene in which much more information is contained.

关 键 词：背景杂波 测试图像 量化尺度 杂波尺度 

分 类 号：TN216[电子电信—物理电子学]