Title :
Edge-preserving prefiltering for document image binarization
Author :
Fan, Liying ; Tan, Chew Lim ; Fan, Lixin
Author_Institution :
Sch. of Comput., Nat. Univ. of Singapore, Singapore
fDate :
6/23/1905 12:00:00 AM
Abstract :
We propose a novel coplanar filter, which exploits the coplanarity of the gray-level distribution of neighboring pixels, to pre-filter document images. Experiments show that the proposed filter exhibits the following desired properties for document image binarization: (1) impulsive noise removal; (2) piecewise smoothing; (3) sharp edge preservation
Keywords :
document image processing; edge detection; filtering theory; impulse noise; interference suppression; statistical analysis; coplanar filter; document image binarization; edge preservation; gray-level distribution; impulsive noise removal; noise suppressing filters; piecewise smoothing; Data preprocessing; Degradation; Distributed computing; Filtering algorithms; Gaussian noise; Noise robustness; Optical character recognition software; Optical filters; Pixel; Smoothing methods;
Conference_Titel :
Image Processing, 2001. Proceedings. 2001 International Conference on
Conference_Location :
Thessaloniki
Print_ISBN :
0-7803-6725-1
DOI :
10.1109/ICIP.2001.959234
