For 3-D measurement of nonuniform reflective objects, it is necessary to ensure measurement accuracy, reduce the number of additional images, and improve measurement efficiency. To satisfy these requirements, we first present a pixel matching method for projected and captured images. Second, we obtain the optimal projected image from two additional images. Finally, we propose a method to estimate reasonable exposure time. Experimental results show that the method can reconstruct 3-D shape of the metal, plastic, and colored objects with minimum of root mean square error (RMSE) 0.095, 0.068, and 0.079, respectively.

中文翻译：

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不均匀反射物体的三维测量方法

对于非均匀反射物体的 3D 测量，需要保证测量精度，减少附加图像的数量，提高测量效率。为了满足这些要求，我们首先提出了一种用于投影和捕获图像的像素匹配方法。其次，我们从两个附加图像中获得最佳投影图像。最后，我们提出了一种估计合理曝光时间的方法。实验结果表明，该方法可以分别以最小均方根误差 (RMSE) 0.095、0.068 和 0.079 重构金属、塑料和有色物体的 3D 形状。