Fast, accurate and convergent tangent estimation on digital contours

被引：51
|
作者：
Lachaud, Jacques-Olivier [1 ]
Vialard, Anne [1 ]
de Vieilleville, Francois [1 ]
机构：
[1] Univ Bordeaux 1, LaBRI, F-33405 Talence, France
来源：
IMAGE AND VISION COMPUTING | 2007年 / 25卷 / 10期
关键词：
multigrid convergence; digital straight segment; tangent estimator; maximal segments;
D O I：
10.1016/j.imavis.2006.06.019
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
This paper presents a new tangent estimator to digitized curves based on digital line recognition. It outperforms existing ones on important criteria while keeping the same computation time: accuracy on smooth or polygonal shapes, isotropy, preservation of inflexion points and convexity, asymptotic behaviour. Its asymptotic convergence (sometimes called multigrid convergence) is proved in the case of convex shapes with C-3 boundary. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：1572 / 1587
页数：16
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