Character recognition method and character recognizer
A character recognition and character technology, applied in the field of character recognition, can solve problems such as low processing efficiency and complex calculations, and achieve the effect of simplifying the recognition process and improving the recognition speed
Active Publication Date: 2013-01-16
安徽省泰岳祥升软件有限公司
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Problems solved by technology
Traditional character recognition technology, such as OCR (Optical Character Recognition, optical character recognition), a common problem is: when processing a large number of documents with a fixed character set, the processing efficiency is low, which is mainly due to the traditional text recognition technology. perform complex calculations on each character
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[0054] Please refer to figure 1 , is a schematic flowchart of the first embodiment of the character recognition method of the present invention. The process of the method is mainly used to recognize characters in a fixed character set picture. It includes the following steps:
[0055] Step S11, using a hash algorithm to calculate the hash value of the character picture in the picture to be recognized.
[0056] Among them, the hash algorithm is hash, which is a function of compressing a message of any length into a fixed-length message digest. The more famous hash algorithms include: MD2 (Message Digest Algorithm2, the second version of the message digest algorithm), MD4 (Message Digest Algorithm Version 4), MD5 (Message Digest Algorithm Version 5) and SHA (Secure Hash Algorithm, Secure Hash Algorithm). Among them, MD5 is a relatively mature and widely used hash algorithm, so in this embodiment, MD5 is selected to calculate the hash value of the character picture in the pict...
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The invention provides a character recognition method. The method includes following steps: b, utilizing the Hash algorithm to calculate Hash value of a character image in an image to be recognized; c, inquiring Hash value in a pre-established character set Hash value training database to obtain character corresponding to the Hash value, wherein the b includes: b1, extracting an individual-character character image from the image to be recognized; b2, performing monochromatic filter processing to the individual-character character image; b3, utilizing the Hash algorithm to calculate Hash value of the individual-character character image; wherein, the character set Hash training database comprises character codes and Hash values corresponding to the character codes; and the c includes: c1, inquiring the Hash value from the pre-established character set training database to obtain the character code corresponding to the Hash value, and c2, converting the character code obtained into corresponding character. The invention further provides a character recognizer. Adopting the character recognition method or the character recognizer can increase character recognition speed.
Description
technical field [0001] The invention relates to character recognition technology, in particular to a character recognition method and a character recognizer. Background technique [0002] Character recognition refers to the technology of using computers and other equipment to automatically recognize characters, where characters include: Chinese characters, English letters, numbers, punctuation, etc., such as: including: 1, 2, 3, A, B, C, #, words, etc. Traditional character recognition technology, such as OCR (Optical Character Recognition, optical character recognition), a common problem is: when processing a large number of documents with fixed character sets, the processing efficiency is low, which is mainly due to the traditional text recognition technology. Perform complex calculations on each character. Contents of the invention [0003] In view of this, the present invention provides a character recognition method and a character recognizer. The recognition speed...
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IPC IPC(8): G06K9/62G06K9/20
Inventor 王忻
Owner 安徽省泰岳祥升软件有限公司