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Title: Method for identifying a sequence of alphanumeric characters
Authors: Lee, Chung-Mong
Wong, Wing-Kin
Keywords: Character recognition system
Character image
Issue Date: 15-Feb-2000
Citation: US Patent 6,026,177. Washington, DC: US Patent and Trademark Office, 2000.
Abstract: A character recongnition system is described, in particular a system suitable for use in monitoring cargo container codes or vehicle number plates. An image of the code is first analyzed to extract potential characters. As part of this process, long horizontal and vertical line segments are filtered out. The extracted potential characters are then input to a two-level character recognition means. The first level comprises a neural network classifier that classifies a character into a smaller set of possible characters; and then the second level comprises another neural network classifier which identifies which character among the smaller set of possible characters the extracted character is.
Rights: This patent is also available at HKUST Technology Transfer Center Patent Search at <>
Appears in Collections:CSE Patents

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