逆向工程中基于三目视觉自动提取并构造复杂曲面边界技术

在逆向工程中复杂曲面零件表面的几何模型的构造是研究重点之一，根据零件表面的数字化数据提取零件表面的边界是构造零件几何模型的关键步骤．本文提出基于三目视觉方法来提取和构造复杂曲面边界的技术．从一幅图像中提取反映物体边界的特征点，再利用图像匹配方法得到这些特征点的空间坐标，最后以这些特征点构造出物体边界B样条曲线．

IN REVERSE ENGINEERING THE METHOD FOR EXTRACTING AND MODELING BOUNDARY OF COMPLEX SURFACE BASED ON TRINOCULAR STEREO VISION

One of key research issues in reverse engineering is the geometric modeling of complex surface. How to extract boundary of complex surface is a main step. It gives a practical method of boundary extracting and modeling by using trinocular stereo-vision. Firstly, the characteristic points of the surface boundary are extracted from one image, then 3D-coordinate of points are acquired by image matching, so the B-spline of surface boundary is taken.