A high-speed algorithm for propagation-type labeling based on block sorting of runs in binary images

Author

Shima, Yoshihiro ; Murakami, Tatsuya ; Koga, Masashi ; Yashiro, Hiroshi ; Fujisawa, Hiromichi

Author_Institution

Hitachi Ltd., Tokyo, Japan

Volume

i

fYear

1990

fDate

16-21 Jun 1990

Firstpage

655

Abstract

A fast algorithm for component labeling of binary images is proposed. Component labeling is an important method for separation of objects in document image understanding, especially in character and picture extraction. The proposed algorithm is based on sorting and tracking of runs and label propagation to the connected runs. Each scan line is partitioned into small segments, i.e. blocks and runs on the scan line are sorted according to the block sequence to speed up tracking of runs. It was ascertained by experiment that the processing time is 16.7 times faster than that of the conventional pixel-based labeling method

Keywords

computerised pattern recognition; computerised picture processing; document image processing; binary images; block sorting; character extraction; component labeling; document image understanding; label propagation; picture extraction; propagation-type labeling; scan line; tracking; Character recognition; Image coding; Image recognition; Image segmentation; Labeling; Laboratories; Partitioning algorithms; Sorting;

fLanguage

English

Publisher

ieee

Conference_Titel

Pattern Recognition, 1990. Proceedings., 10th International Conference on

Conference_Location

Atlantic City, NJ

Print_ISBN

0-8186-2062-5

Type

conf

DOI

10.1109/ICPR.1990.118183

Filename

118183