Japanese / English


論文の言語 英語
著者 Tomohiro Nakai, Koichi Kise, Masakazu Iwamura
論文名 A Method of Annotation Extraction from Paper Documents Using Alignment Based on Local Arrangements of Feature Points
論文誌名 Proc. 9th International Conference on Document Analysis and Recognition (ICDAR2007)
Vol. 1
ページ pp.23-27
年月 2007年9月
要約 Annotations on paper documents include important information. We can exploit the information by extracting and analyzing annotations. In this paper, we propose a method of annotation extraction from paper documents. Unlike previous methods which limit colors or types of annotations to be extracted, the proposed method attempts to extract annotations by comparing a document image of an annotated document with its original document image for removing the limitations. The proposed method is characterized by fast matching and flexible subtraction of images both of which are essential to the annotation extraction by comparison. Experimental results have shown that color annotations can be extracted from color documents.