一种基于图像处理技术的视距估算方法  

A Method of View Range Evaluation Based on Image Processing Technology

作　　者：李升才[1] 周广恩[1] 赵宝升[2] 

机构地区：[1]北京特种车辆研究所,北京100072 [2]中国科学院西安光学精密机械研究所,西安710068

出　　处：《光子学报》2006年第3期477-480,共4页Acta Photonica Sinica

摘　　要：围绕视距估算,基于微光下的视觉探测方程和图像阈值对比度,利用图像处理技术和最小二乘数据拟合方法,提出了一种比较客观的夜视系统野外视距估算方法·为了验证该方法的有效性,针对六种夜视系统,分别进行了野外比较试验·试验结果表明:该方法有效地提高了微光夜视仪的视距检测速度,具有较高的估算准确度和很好的实用性·因此,该方法对于夜视系统性能分析具有科学的指导意义·View range is one of the main integrated performance indexes for night view systems, and is also the important performance index needed to give when night view systems leave factory. Finally the performance of night view systems express as view range. So the size of view range directly determines integrated performance of night view systems. Therefore, how to evaluate view range of systems objectively and effectively is the main problem that both producers and users concern. Based on low night level view detection function and image threshold contrast, a new objective view range evaluation method of night view system is proposed in this article with image processing technology,least-square polynomial fitting, vision sense formula under glimmer light circumstance and other knowledge. For validating the method, six groups experimentation with field situation of six kinds＇ night view system have been finished respectiveiy. The results of experiment indicates that the new method has effectively improved the speed of view range measurement of night view system with good precision and practicability. Therefore, the method has scientific guidance meanings to analyze low night level night view system performance, make technique index sure, improve and develop the night view system performance.

关 键 词：视距估算 夜视系统 图像处理 图像阈值对比度 CCD摄像机 调制传递函数 

分 类 号：TN223[电子电信—物理电子学]