| | |
Summary: © 1997 IEEE
Local Skew Angle Estimation from Background Space in
Text Regions
Apostolos Antonacopoulos
Department of Computer Science, University of Liverpool,
Peach Street, Liverpool, L69 7ZF, United Kingdom (aa@csc.liv.ac.uk)
Abstract
Almost all document analysis approaches need to per-
form a global analysis of the page orientation as a sepa-
rate process at an early stage. It would be preferable to
estimate the orientation locally after page segmentation
and classification, when more knowledge about the differ-
ent regions is available. In this paper, a novel local skew
estimation method is presented that takes advantage of
the information available after flexible and efficient page
segmentation and classification methods have been ap-
plied to the document image. The proposed method accu-
rately estimates the orientation of individual text regions
by efficiently analysing the arrangement of background
space contained in them. No assumption is made of the
|
