曲面体线图的标记与匹配

三维曲面体的标记与匹配,是计算机视觉研究领域中一项相当有用但又是非常困难的技术。本文讨论了一种曲面体标记的新方法。通过引入线段的一些新的标记类型,圆满地解决了利用 Huffman 标记技术描述曲面体时,可能出现的不一致性。根据以上的标记结果,本文还给出了一匹配曲面体线图的新方法。在匹配过程中,我们注重的不是图象的二维特征,而是其对应的物体的三维特征,因而对物体的旋转、遮挡、尺度变化及远视失真等极不敏感。实验结果表明本算法是相当令人满意的。

Labelling and Matching Line Drawings of an Object with Curved Surfaces

Labelling and matching line drawings of an object with curved surfaces are impo-ttant but very difficult techniques in the study of Computer Vision.A new scheme tolabel line drawings of an object with curved surfaces is presented in this paper.Withthe introduction of some new labelling types of line segments,the scheme overcomesthe difficulty of inconsistency perfectly when using Huffman's labelling scheme tocurved surfaces.This paper also presents a new way to match the line drawings.During the matching process,we pay attention to not only the 2-D features of theimage,but also the more important 3-D features of the correspondent object of theimage.Because these 3-D features do not very with the movement of the object,thematching algorithm can suffer great changes in image structure resulting from the mo-tion of the object as rotation,occluding,scaling and perspective distortion.It is shownby an experiment that the algorithms work quite well.