Linear-time connected-component labeling based on sequential local operations

被引:333
作者
Suzuki, K
Horiba, I
Sugie, N
机构
[1] Aichi Prefectural Univ, Fac Informat Sci & Technol, Nagakute, Aichi 4801198, Japan
[2] Meijo Univ, Fac Sci & Technol, Tempa Ku, Nagoya, Aichi 4688502, Japan
关键词
labeling; connected component; linear time; sequential local operation; one-dimensional table; raster scan order;
D O I
10.1016/S1077-3142(02)00030-9
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 fast algorithm for labeling connected components in binary images based on sequential local operations. A one-dimensional table, which memorizes label equivalences, is used for uniting equivalent labels successively during the operations in forward and backward raster directions. The proposed algorithm has a desirable characteristic: the execution time is directly proportional to the number of pixels in connected components in an image. By comparative evaluations, it has been shown that the efficiency of the proposed algorithm is superior to those of the conventional algorithms. (C) 2003 Elsevier Science (USA). All rights reserved.
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页码:1 / 23
页数:23
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