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:
王长波, 谢明红. 格雷编码与相移结合的双目三维重构[J]. 计算机工程, 2013, 39(5): 178-182.
WANG Chang-Bei, XIE Meng-Gong. Binocular Three-dimention Reconstruction Combined with Gray Coding and Phase-shift[J]. Computer Engineering, 2013, 39(5): 178-182.