ID No. locating and recognizing method

Abstract

The invention relates to an ID No. localizing and recognizing method, which belongs to the OCR technical field of locating and recognizing an ID No. from images containing the ID No. In the method, the horizontal projection value of an image is utilized to divide the image into one or more line areas; then, the characteristics of the aspect ratio of both the image and the ID No. in the line areas are utilized to remove lines where the ID No. is impossibly located; subsequently, each line area where the ID No. is possibly located is divided into one or more row areas, and the characteristics of small number and small space between digits of the ID No. are utilized to determine the position of the ID No. on the image; finally, the ID No. within the image is recognized with an recognition engine. The ID No. localizing and recognizing method can complete the acquisition of the information about ID, Military ID, Passport, Driver's License numbers and so on simply, conveniently and rapidly to greatly reduce the labor cost and increase the working efficiency.

Description

technical field [0001] The invention belongs to the technical field of OCR (Optical Character Recognition, optical character recognition), and relates to a method for locating and recognizing a certificate number. Background technique [0002] With the increasing number of people participating in various social activities, the requirements for checking the number information of ID cards, passports, driver's licenses, etc. are becoming more and more stringent and frequent, such as in customs, banking, security inspections, traffic inspections, online booking After receiving tickets, event lottery, stock investment, etc., in these cases, it is necessary to confirm the ID number information of the party concerned. Under normal circumstances, the information verification of the certificate number is carried out manually. This tedious but very important work not only leads to a large waste of labor costs, but also is prone to inaccurate problems; some certificate numbers use smar...

AI Technical Summary

Problems solved by technology

This kind of identification circuit must have high hardware cost, and because it must be connected with the data terminal of the issuing authority, the applicability is poor

[0004] Applying OCR technology to document recognition generally requires a matching scanner device and has specific specifications and requirements for document image acquisition, such as requiring that the document must be placed at a specific position on the scanner for scanning, and the size of all scanned documents of the same type They are all the same and a complete document image, and pre-calculate the relative position of the document number in the document, and use the pre-set position to locate the document number area. This method requires a scanner and has strict restrictions on the document image , not flexible enough and cumbersome to operate, how to quickly, automatically, conveniently and accurately identify the document number is still a blank

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