摘要
针对光笔式视觉测量中被测特征点像面坐标的提取问题进行了研究。依据数字图像处理理论并结合本系统中被测特征点的成像特点,给出了图像处理过程及实际处理结果;针对椭圆形光斑中心点像面坐标的获取提出了椭圆曲线拟合法和灰度质心法,分析结果表明,灰度质心法应用于本测量系统中是可行性的。
Based on the theory of digital image processing and combining with the image characteristics, the practical methods and results of image processing were presented. Meanwhile,two different approaches, ellipses curve fitting and grey mass center,which are used to detect the image coordinates of the center of an elliptical light spot,were proposed. The result shows that the application of grey mass center in the light pen vision measuring system was feasible.
出处
《机床与液压》
北大核心
2005年第10期123-125,159,共4页
Machine Tool & Hydraulics
关键词
光笔
视觉测量
像面坐标
图像处理
Lightpen
Vision measurement
Image coordinates
Image processing
