Screen Pattern Removal for Character Pattern Extraction from High-Resolution Color Document Images

Hideaki GOTO
Hirotomo ASO

Publication
IEICE TRANSACTIONS on Information and Systems   Vol.E88-D    No.6    pp.1310-1313
Publication Date: 2005/06/01
Online ISSN: 
DOI: 10.1093/ietisy/e88-d.6.1310
Print ISSN: 0916-8532
Type of Manuscript: LETTER
Category: Image Recognition, Computer Vision
Keyword: 
character pattern extraction,  screen pattern,  offset printing,  color document,  wavelet transform,  

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Summary: 
Screen pattern used in offset-printed documents has been one of great obstacles in developing document recognition systems that handle color documents. This paper proposes a selective smoothing method for filtering the screen patterns/noise in high-resolution color document images. Experimental results show that the method yields significant improvements in character pattern extraction.

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