基于改进型旋转矩阵的求取世界坐标方法  

作　　者：陈龙灿 杨佳义 党晓圆 陆地 方健紅 

机构地区：[1]重庆移通学院,重庆401520

出　　处：《科技创新与应用》2022年第24期126-129,共4页Technology Innovation and Application

摘　　要：在当前的工业现场中,图像测量过程应用比较广泛,现场往往为测量某些图像的三维几何位置和对应图像像素点的位置关系,这就需要建立对应相机的成像几何模型或者矩阵,其中这些几何模型也就是相机的参数,在大多数情况下,相机的内外参数都需要通过实验或者严密的计算才能获取。针对当前工业现实问题,该文提出一种改进型设计方案求取世界坐标系的方案,利用Matlab软件标定摄像机并识别图片像素点,经过矩阵计算出对应的世界坐标系及计算出相应的误差,最终检测的标定误差控制在2 mm的范围内,设计对应的GUI的人机界面后操作更为方便,简化复杂的操作过程,使生产过程变得更加灵活,更加智能,同时还可以节约成本,有效提高生产效率。In the current industrial scene,the image measurement process is widely used,the scene often needs to measure the three-dimensional geometric position of some images and the corresponding position relationship of image pixels,which requires the establishment of the corresponding camera imaging geometric model or matrix,in which these geometric models are the camera parameters.In most cases,the camera's internal and external parameters need to be measured through the real image and can only be obtained by verification or rigorous calculation.In view of the current industrial practical problems,this paper proposes an improved design scheme to obtain the world coordinate system,uses Matlab software to calibrate the camera and identify the image pixels,calculates the corresponding world coordinate system and calculates the corresponding error through the matrix,and finally controls the calibration error within 2 mm.After designing the corresponding GUI man-machine interface,the operation is more convenient.Thus,it can simplify the complex operation process,make the production process more flexible and intelligent,save cost and effectively improve the production efficiency.

关 键 词：图像坐标 矩阵 世界坐标 坐标映射 相机标定 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]