摘要： 为实现高分辨率快速非接触式双目三维重构，提出一种格雷编码与相移结合的双目三维重构方法。采用格雷码法将投射空间分为若干个子区域，投射相移图案，使各个子区域内的采样点相位在[0,2π]范围内变化，将采样点相位与子区域码叠加，得到唯一的编码，如果左右2幅图中点的编码符合匹配原则，则互相匹配成对，利用三角法原理求出空间点的三维坐标。实验结果表明，该方法能快速实现三维重构，误差小于0.351 mm。

关键词: 三维重构, 结构光, 格雷编码, 相移, 图像匹配, 三角法

Abstract: A binocular three-dimention reconstruction method combined with Gray coding and phase-shift is presented to achieve a fast high-resolution non-contact binocular three-dimention reconstruction. This method combines Gray code with phase-shift, divides the measured space into sub-spaces with Gray code, makes sure the point in the sub-spaces range in 0~2π phase by using phase-shift image, and combines the phase with the sub-spaces code which makes all the points into a sole code. It matches the points between the left-image and the right-image, if they conform to the matching principle, then match each other in pairs, and use triangular method principle to get the three-dimention coordinates of space points. Experimental results show that this method can quickly realize three-dimention reconstruction, the error is less than 0.351 mm.

Key words: three-dimention reconstruction, structured light, Gray coding, phase-shift, image matching, trigonometry

中图分类号: 

• TP391