摘要
提出一种基于物方直接解的圆匹配与重建方法,建立了灰度影像与空间圆参数间的函数关系,根据已知的相片内外方位元素及空间圆参数的初值,利用直线段最小二乘模板匹配方法直接获取空间圆的参数。系统论述了基于物方直接解和直线段最小二乘模板匹配方法进行空间圆匹配与重建的数学模型。实际图像数据的试验结果表明,本算法具有较高的重建精度。
A new technique to match and reconstruct circles based on immediate object space solution is proposed. Calculation of rotation angles between circle and world coordinate systems with normal vector of circles is discussed. Since the end points of line segments are results of line template matching and also functions of space circle, the parameters of space circle and gray images are directly related. Thus parameters of space circle can be obtained directly from several gray images by least squares template matching with known camera parameters and initial values of circles. The proposed approach is tested with real imagery, and the results are very satisfying.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2004年第2期92-95,共4页
Journal of Mechanical Engineering
基金
高等学校博士学科点专项科研基金资助项目(20010486011)
