Title :
Binarizing document image using coplanar prefilter
Author :
Fan, Liying ; Fan, Lixin ; Lim Tan, Chew
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 gray-level distribution of neighboring pixels, to pre-filter the document images. Experiments show that the proposed filter exhibits the following desired properties for document image binarization: 1) impulsive noise removal, 2) piecewise smoothing, and 3) sharp edge preservation
Keywords :
document image processing; filtering theory; impulse noise; matrix algebra; coplanar filter; coplanar matrix; document image binarization; document image processing; gray-level distribution; impulsive noise; sharp edge preservation; smoothing; Character recognition; Data preprocessing; Degradation; Distributed computing; Filters; Gaussian noise; Noise robustness; Pixel; Smoothing methods; Transmission line matrix methods;
Conference_Titel :
Document Analysis and Recognition, 2001. Proceedings. Sixth International Conference on
Conference_Location :
Seattle, WA
Print_ISBN :
0-7695-1263-1
DOI :
10.1109/ICDAR.2001.953750
