Character recognition method and apparatus

Image analysis – Applications – Vehicle or traffic control

Reexamination Certificate

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Details

C382S274000, C382S216000

Reexamination Certificate

active

07103199

ABSTRACT:
A character recognition method is provided, in which the method includes the steps of: picking up images in a motion picture by changing brightness for each image; extracting a character area from each image; recognizing at least one character in the character area by performing a matching process between the character area and dictionary images for each image, and determining a character recognition result for each image; and selecting a final character recognition result of which the matching degree is the highest from the character recognition results of the images. Accordingly, even when a character is too dark to recognize due to shadows in the daytime or a character is too bright to recognize due to irradiation in the nighttime, the character can be recognized by using images having differing brightness.

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Dzuba, Gregory, Filatov, Alexander, Volgunin, Alexander. Handwritten ZIP Code Recognition. IEEE 1997.
Yung, N.H.C., Au, K.H., Lai, A.H.S. Recognition of Vehicle Regristration Mark on Moving Vehicles in an Outdoor Environment. IEEE 1999.

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