Image analysis – Pattern recognition – Template matching
Patent
1996-10-01
2000-06-27
Cuoso, Yon J.
Image analysis
Pattern recognition
Template matching
382209, G06K 962
Patent
active
06081621&
ABSTRACT:
One dimensional horizontal and vertical reference projections are obtained for a reference character template. Similar one dimensional horizontal and vertical pattern projections are obtained for an unknown character pattern. The horizontal reference projection and horizontal pattern projection are compared, and the vertical reference projection and vertical pattern projection are compared. The reference character template is then positioned with respect to the unknown character pattern based on such comparisons in order to calculate a correlation coefficient between the two. In certain cases, the unknown character can be identified based solely on its one dimensional projections. Multiple characters in a character pattern are identified either one at a time or as a group. In the latter case, all possible combinations are generated using tree search processing, and the best combination is selected.
REFERENCES:
patent: 4019173 (1977-04-01), Kono
patent: 4153897 (1979-05-01), Yasuda et al.
patent: 4177448 (1979-12-01), Brayton
patent: 4654873 (1987-03-01), Fujisawa et al.
patent: 5073963 (1991-12-01), Sammons et al.
patent: 5133023 (1992-07-01), Bokser
patent: 5150425 (1992-09-01), Martin et al.
patent: 5151950 (1992-09-01), Hullender
patent: 5204914 (1993-04-01), Mason et al.
patent: 5649027 (1997-07-01), Mahajan et al.
Miloslavskaya, N.K., et al., "Minsk-1 Digital Computer Simulation of an Alogorithm for Handwritten Character Recognition", 1969, Soviet Automatic Control, vol. 14, No. 3, XP-002099694, pp. 42-45.
Canon Kabushiki Kaisha
Cuoso Yon J.
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