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.
出处
《海洋测绘》
2007年第1期70-73,共4页
Hydrographic Surveying and Charting
关键词
图像处理
亚像素
二维控制场
高精度定位算子
image processing
subpixel
quasi-2D control field
high-precision location operator
