亚像素定位的关键问题研究  

Research on the Key Problems of Subpixel Location of Control Point Image in Quasi-2D Control Field

作　　者：王成亮[1] 邹峥嵘[1] 闾海庆[1] 王静[2] 

机构地区：[1]中南大学信息物理工程学院,湖南长沙410083 [2]华东理工学院测量系,江西抚州344000

出　　处：《海洋测绘》2007年第1期70-73,共4页Hydrographic Surveying and Charting

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像素。This paper analyzed the choice and the design of the control point. According to it＇ s geometry shape of characteristic, mainly made use of image processing, edge detection, Hough Transformation, Highprecision location operator etc. Succeeded to withdraw the quasi-2D control field of close range photogrammetry of Central South University of 1350 control points＇s subpixel location. The results of emulational image examination show that the accuracy of comer point location is about 0. 05 pixels and give the solution of the decisive problem in this process.

关 键 词：图像处理 亚像素 二维控制场 高精度定位算子 

分 类 号：TP751[自动化与计算机技术—检测技术与自动化装置]