Multi-camera measurements of a three-dimensional shape using the likelihood set to the three-dimensional space
Multi-camera measurements of a three-dimensional shape using the likelihood set to the three-dimensional space
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发表时间：
2016
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通讯作者：
T. Momiyama;T. Shimizu
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作者：
T. Momiyama;T. Shimizu
摘要-本文介绍了三维形状测量的多摄像机系统和测量点的校正。首先利用标定后的多摄像机的位置关系建立几何模型。由于摄像机线性放置在由驱动器改变曲率的薄板上，因此采用张的方法进行标定。第二，在对极平面上测量三维物体。采用动态规划（DP）匹配确定对应点，并采用平方差和（SSD）作为局部区域窗口。第三，使用相关系数来确定三维点的似然性，然后设置该似然性来校正和修改测量点。因此，测量结果更接近于测量对象的形状。
Abstract — This paper describes three-dimensional shape measurements by a multi-camera system and the correction of the measured points. First, a geometrical model is constructed using the positional relationship of the calibrated multi-camera. Because the cameras are located linearly on a thin plate whose curvature is changed by an actuator, Zhang’s method is employed in the calibration. Second, a three-dimensional object is measured on an epipolar plane. DP (Dynamic Programming) matching is used to determine the corresponding points and SSD (Sum of Squared Difference) is used as the local area windows. Third, the correlation coefficient is employed to determine the likelihood of the three-dimensional points, which are then set to correct and modify the measured points. Consequently, the measurement results more closely resemble the shape of the measured object.