Abstract
This paper proposes a method for detecting characters in grey-scale scene images for navigating vision-based mobile robot by character information. First, we extract subregions with high spatial frequency and great variance in grey-level from an input scene image as candidates of character components. Then, we select characters by using several heuristics such as constraints of size and shape, bimodality of an intensity histogram, alignment and proximity of characters. We conducted an experiment using 20 indoor and 40 outdoor images. As a result, character lines are detected with a high rate of 80%.
Preview
Unable to display preview. Download preview PDF.
References
Anil K. Jain, Sushil K. Bhattacharjee, and Yao Chen. On Texture In Document Images. In 1992 IEEE Computer Society On Computer Vision and Pattern Recognition, Pages 677–680.
Keiji Gyohten, Noboru Babaguchi,and Tadahiro Kitahashi. Region Extraction by Constraint Satisfaction. In ACCV'93 Asian Conference on Computer Vision, pages 846–849, Osaka, Japan, November 1993.
Yu Zhong, Kalle Karu, and Anil K. Jain. Locating Text in Complex Color Images. Pattern Recognition, 28(10):1523–1535, October 1995.
Jun Ohya, Akio Shio, and Shigeru Akamatsu. Recognizing Characters in Scene Images. IEEE Transactions on pattern analysis and machine intelligence, 16(2):214–220, February 1994.
Rafael C. Gonzalez, and Richard E. Woods. Digital Image Processing. Addison-Wesley Publishing Company, 1992.
Akio Shio. A Dynamic Thresholding Method for Character Detection in Complex Scene Images. In Trans. IEICE Japan, J71-D, no.6 pages 863–873. (In Japanese)
Nobuyuki Otsu. An Automatic Threshold Selection Method Based on Discriminant and Least Squares Criteria. In Trans. IEICE Japan, J63-D, no.3, pages 349–356. (In Japanese)
Author information
Authors and Affiliations
Editor information
Rights and permissions
Copyright information
© 1997 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Liu, Y., Yamamura, T., Ohnishi, N., Sugie, N. (1997). Detecting characters in grey-scale scene images. In: Chin, R., Pong, TC. (eds) Computer Vision — ACCV'98. ACCV 1998. Lecture Notes in Computer Science, vol 1352. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-63931-4_210
Download citation
DOI: https://doi.org/10.1007/3-540-63931-4_210
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-63931-2
Online ISBN: 978-3-540-69670-4
eBook Packages: Springer Book Archive