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||Shinichiro OMACHI, Masakazu IWAMURA, Seiichi UCHIDA, and Koichi KISE
||Area Ratio as Supplementary Information for Camera-Based Character Recognition
||IEICE Technical Report
|Month & Year
||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.