摘要
通过对物体摄像来提取表面 3D信息正成为一种新兴的反求建模方法。传统的视觉算法是基于特征对应的 ,要求物体表面具有几何特征或色彩纹理 ,不适于无纹理自由曲面的重构。将计算机视觉方法与CAGD技术紧密结合 ,对无纹理自由曲面提出了一种新的视觉重构方法。首先将物体表面分割为N边域曲面片 ,经由边缘线提取、匹配 ,重构出曲面片的边界曲线 ;然后通过反射模型、图像光亮度分析求出曲面片的跨界切矢 ;最后综合上述信息 。
The vision method is now used in inverse engineering for 3D reconstruction The traditional computer vision methods are feature based, i e , they require that the objects must appear features owing to geometry or textures Textureless free form surface is an exception to these A new method is put forwad combining computer vision with CAGD The surface is subdivided into N side Gregory patches, and a stereo algorithm is used to reconstruct the boundary curves Then, the cross boundary tangent vector is computed through reflectance analysis At last, the whole surface can be reconstructed
出处
《光学技术》
CAS
CSCD
2001年第5期401-403,共3页
Optical Technique
基金
国家自然科学基金资助项目 (596750 39
599750 57)
