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Bill identification method and device thereof

A bill and identification technology, applied in the field of image recognition, can solve the problems of low robustness of the algorithm and inaccurate positioning of bill recognition information blocks, etc.

Active Publication Date: 2019-04-19
TAIKANG LIFE INSURANCE CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a bill information identification method and device, which solves the problems of inaccurate positioning of bill identification information blocks and low robustness of the algorithm in the prior art, and avoids the existence of a pipeline method. Algorithm related problems

Method used

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  • Bill identification method and device thereof
  • Bill identification method and device thereof
  • Bill identification method and device thereof

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0104] Embodiment 1: The bill feature templates that meet the conditions are all bill feature templates, and the first distance condition is: the target feature template with the closest distance to the information area to be identified in the bill to be identified, specifically, including:

[0105]Calculating a positional offset matrix between each area of ​​information to be identified in the bill template and each bill feature template;

[0106] Calculate the distance between each area of ​​information to be identified and each bill feature template according to each of the offset matrices;

[0107] According to the distance between each area of ​​information to be identified and each bill feature template, the target feature template with the closest distance to each area of ​​information to be identified is determined.

[0108] Among them, for the determined target feature template, if the corrected image does not contain the corrected image obtained through the affine tr...

Embodiment approach 2

[0109] Embodiment 2: The qualified feature template is the bill feature template corresponding to the first affine transformation matrix participating in the bill correction, and the distance condition is: the target feature template with the closest distance to the information area to be recognized in the bill to be recognized, specifically, include:

[0110] Calculating a positional offset matrix between each area of ​​information to be identified in the bill template and each bill feature template that meets the preset conditions;

[0111] According to each of the offset matrices, calculate the distance between each region of the information to be identified and each bill feature template that meets the preset conditions;

[0112] According to the distance between each area of ​​information to be identified and each bill feature template meeting the preset conditions, the target feature template with the closest distance to each area of ​​information to be identified is det...

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Abstract

An embodiment of the invention discloses a bill identification method and a device thereof. A to-be-identified bill is corrected through a multi-characteristic template. An affine transformation matrix between the characteristic template and the to-be-identified bill is calculated according to a template matching result. Correctness of the affine transformation matrix is verified. Furthermore according to a proximity principle, which characteristic template with the corrected bill image which comprises a to-be-interrupted identification information block is determined through a distance relation between the characteristic template and an identification information block is determined, and accurate positioning of a bill surface identification information block is realized, thereby improvingrobustness of a positioning algorithm. Furthermore an algorithm correlating problem in a pipe type manner is prevented.

Description

technical field [0001] The invention relates to the field of image recognition, in particular to a bill recognition method and device. Background technique [0002] As artificial intelligence technology, especially OCR (English full name: Optical Character Recognition, Chinese full name: Optical Character Recognition) technology is gradually introduced into the intelligent financial invoice information collection system, using OCR scanning recognition technology to automatically collect value-added tax invoices and other bills information and summarize it in a table. Compared with the manual input method, this method greatly reduces the workload. However, the key link for OCR bill identification lies in the positioning of bill face identification information blocks. However, due to the influence of the smoothness of the pasting of the bill and the noise of the bill, the accuracy of the positioned face identification information block is not high, which makes the extraction...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G07D7/206
CPCG07D7/206
Inventor 马文伟
Owner TAIKANG LIFE INSURANCE CO LTD
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