Numeric character recognition method based on fractal dimension

Tao He; Yulang Xie; Jiuyin Chen; Longfei Cheng; Ye Yuan

doi:10.1117/12.2035619

10 October 2013 Numeric character recognition method based on fractal dimension

Tao He, Yulang Xie, Jiuyin Chen, Longfei Cheng, Ye Yuan

Proceedings Volume 8916, Sixth International Symposium on Precision Mechanical Measurements; 89162B (2013) https://doi.org/10.1117/12.2035619
Event: Sixth International Symposium on Precision Mechanical Measurements, 2013, Guiyang, China

Abstract

An image processing method based on fractal dimension is proposed in this paper. This method uses fractal dimension to process the character images firstly, and rises the analysis of each grid to the analysis of interrelation between the grids to eliminate interference. Box-counting method is commonly used for calculating fractal dimension of fractal, which uses small box whose side length is r ,that is the topological dimension of the box is d, to cover up the image. Because there are various levels of cavities and cracks, some small boxes are empty and some small boxes cover a part of fractal image which is called non-empty box (here refers to the average gray of the part that contained in the small box is larger than a certain threshold). We note down the number of non-empty boxes, analyze and calculate them. The method is used to image process the polluted characters, which can remove ink and scratches around the contour of the characters and remain basic contour, then the characters can be recognized by using template matching. In computer simulation experiment for polluted character recognition, this method can recognize the polluted characters quickly, which improve the accuracy of the recognition of the polluted characters.

Citation Download Citation

Tao He, Yulang Xie, Jiuyin Chen, Longfei Cheng, and Ye Yuan "Numeric character recognition method based on fractal dimension", Proc. SPIE 8916, Sixth International Symposium on Precision Mechanical Measurements, 89162B (10 October 2013); https://doi.org/10.1117/12.2035619

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available