Area Ratio as Supplementary Information for Camera-Based Character Recognition
Journal
IEICE Technical Report
Vol.
105
No.
PRMU-615
Presentation number
PRMU2005-213
Pages
pp.67-72
Reviewed
Not reviewed
Date
February 2006
Research fields
Pattern recognition
Key
Omachi2006_IEICEPRMU (id=384)
Abstract
In order to achieve a highly accurate recognition of characters in a scene image with a digital camera,
there are some attempts on offering supplementary information for recognition with a character image. The
information should be robust against geometric distortions since an image taken by a digital camera is usually
geometrically distorted. In this paper, we propose a method of embedding information in a character pattern by
designing a character pattern in two colors so that the information is embedded as the area ratio of the two colors.
It is expected that the area ratio is correctly extracted even if the character pattern is affine-transformed since the
area ratio is affine invariant. We evaluate generated character patterns with the embedded information and discuss
the effectiveness of the proposed method.
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