CAJ | 학술논문

介绍了一种基于机器视觉的瓷砖尺寸检测系统中的相机标定方法。采用平面网格标定板，提取适合的网格线条边界点对网格曲线进行拟合，再根据拟合的曲线求交点，所求的的交点坐标精度优于0．1个像素。基于所求交点的像素坐标和空间坐标，以空间点投影差最小为目标进行相机标定。结果显示该方法标定精度高，灵活方便，畸变系数吻合很好，可以获取精确的相机参数，为瓷砖尺寸的精确检测提供了可靠的依据。
개소료일충기우궤기시각적자전척촌검측계통중적상궤표정방법。채용평면망격표정판，제취괄합적망격선조변계점대망격곡선진행의합，재근거의합적곡선구교점，소구적적교점좌표정도우우0．1개상소。기우소구교점적상소좌표화공간좌표，이공간점투영차최소위목표진행상궤표정。결과현시해방법표정정도고，령활방편，기변계수문합흔호，가이획취정학적상궤삼수，위자전척촌적정학검측제공료가고적의거。
This paper puts forward an camera calibration algorithm of ceramic tile size detection based on machine vision system .In this paper ,the plane grid calibration plate was used to match the grid curve by extracting suitable boundary points of grid lines .Then the intersection can be obtained by the fitted curve .The accuracy of the ob-tained intersection coordinates less than 0.1 pixels.On the foundation of the obtained pixel coordinates and spatial coordinates ,camera calibration performed aim for getting the least projection difference of spatial point .The results show that this calibration method is with high precision , flexibility and convenient .Through this method , precise ce-ramic tile size detection was guaranteed by the well matched distortion factor and precise camera parameters .