一种快速CCD目标定位方法  

An approach to fast CCD target location

作　　者：李兰君[1] 刘琼[2] 

机构地区：[1]中南工学院电气工程系,湖南衡阳421001 [2]常德师范学院计算机系,湖南常德415003

出　　处：《传感器技术》2000年第4期57-58,共2页Journal of Transducer Technology

摘　　要：重心法是一种高精度的CCD像点位置提取算法 ,但由于数据量大 ,响应速度较慢 ,不适于要求实时响应的数字摄影测量系统。本文提出一种方法 :利用模数混和硬件电路对CCD图像进行预处理 ,从中只获取高于阈值的目标信号 ,再结合目标识别及定位算法确定目标像点的重心 ,使数据处理量大大减小 ,能够满足实时摄影测量的要求。Centroid algorithm is a high accuracy method to locate the point on CCD image. But the large amount of data makes it respond slowly an d unsuitable for the real-time digital photogrammetrical system.In this paper an approach is proposed: CCD image is pre-processed by a hybrid circuit such that only signals of targets above the threshold are obtained; the centroids of targe ts are then calculated by the combination of target recognition and location alg orithm.The operation reduces the processing data substantialy and meets the dema nd of real-time photogrammetry.

关 键 词：面阵电荷耦合器件 重心算法 目标定位 实时摄影 

分 类 号：TB8－39[一般工业技术—摄影技术]