کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
531007 | 869804 | 2007 | 10 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Shape retrieval using triangle-area representation and dynamic space warping Shape retrieval using triangle-area representation and dynamic space warping](/preview/png/531007.png)
In this paper, we present a shape retrieval method using triangle-area representation for nonrigid shapes with closed contours. The representation utilizes the areas of the triangles formed by the boundary points to measure the convexity/concavity of each point at different scales (or triangle side lengths). This representation is effective in capturing both local and global characteristics of a shape, invariant to translation, rotation, and scaling, and robust against noise and moderate amounts of occlusion. In the matching stage, a dynamic space warping (DSW) algorithm is employed to search efficiently for the optimal (least cost) correspondence between the points of two shapes. Then, a distance is derived based on the optimal correspondence. The performance of our method is demonstrated using four standard tests on two well-known shape databases. The results show the superiority of our method over other recent methods in the literature.
Journal: Pattern Recognition - Volume 40, Issue 7, July 2007, Pages 1911–1920