二维控制场中控制点像点坐标亚像素定位的问题研究  

KEY PROBLEMS OF SUBPIXEL LOCATION OF CONTROL POINT IMAGE IN QUASI-2D CONTROL FIELD

作　　者：王成亮[1] 邹峥嵘[1] 李建文 闾海庆[1] 

机构地区：[1]中南大学信息物理工程学院,长沙市麓山南路256号410083 [2]平罗县城建局,平罗县富民街27号753400

出　　处：《测绘信息与工程》2007年第1期26-28,共3页Journal of Geomatics

摘　　要：分析了控制点标志的选择与设计,采用了图像处理、Hough变换、角点与直线高精度定位算子等方法,实现了中南大学近景摄影测量二维控制场1 350个人工标志点的自动识别和亚像素定位,仿真图检测平均精度达到±0.05 pixel。The choice and the design of the control point are analyzed. According to its geometry shape of characteristic, detection, Hough transformation, high-precision location operator etc are used to conduct the subpixel location of the quasi-2D control field of close range photogrammetry in Central South University with 1 350 control points. The results of emulational image examination show that the accuracy of corner point location is about 0.05 pixels.

关 键 词：亚像素 二维控制场 高精度定位算子 

分 类 号：P237[天文地球—摄影测量与遥感]