Title :
Document image segmentation as selection of Voronoi edges
Author :
Kise, Koichi ; Sato, Akinori ; Matsumoto, Keinosuke
Author_Institution :
Dept. of Comput. & Syst. Sci., Osaka Prefecture Univ., Japan
Abstract :
This paper presents a method of document image segmentation for pages with document components of arbitrary shape as well as any skew angles. The characteristics of the proposed method are as follows: the Voronoi diagram is constructed based on the connected components to obtain the candidates of boundaries of document components; and the candidates are utilized to estimate the inter-character, inter-line and inter-column gaps without the use of domain specific parameters so as to select the boundaries. From the experimental results for 80 images with non-Manhattan layout and the skews of 0°~450. We have confirmed that the method is effective for extraction of column regions and as efficient as other methods based on connected component analysis
Keywords :
computational geometry; diagrams; document image processing; edge detection; image segmentation; Voronoi diagram; Voronoi edge selection; arbitrary shape document components; column region extraction; connected component analysis; document image segmentation; domain specific parameters; inter-character gaps; inter-column gaps; inter-line gaps; nonManhattan layout; skew angles; Euclidean distance; Image analysis; Image segmentation; Shape; Text analysis; White spaces;
Conference_Titel :
Document Image Analysis, 1997. (DIA '97) Proceedings., Workshop on
Conference_Location :
San Juan
Print_ISBN :
0-8186-8055-5
DOI :
10.1109/DIA.1997.627089
