Sciweavers

Share
MVA
2002

Enhancing Character Recognition by Optimizing Focal Length

9 years 3 months ago
Enhancing Character Recognition by Optimizing Focal Length
This paper proposes to use zooming function of digital cameras for robust character recognition and to control focal length for improving the performance even in dim light conditions. For this purpose, we determine the optimum focal length vs. camera-object distance through several recognition experiments. Recognition performance for insufficient illuminated images can be enhanced by adopting the optimum focal length. Experiments involving multiple fonts show that our method improves the recognition rates over a wide range of camera-object distances and illumination variations.
Takahiko Shimmura, Yoshinao Shiraki, Naoki Mukawa,
Added 22 Dec 2010
Updated 22 Dec 2010
Type Journal
Year 2002
Where MVA
Authors Takahiko Shimmura, Yoshinao Shiraki, Naoki Mukawa, Minako Sawaki, Norihiro Hagita
Comments (0)
books