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Method for identifying forgery seal based on feature line randomly generated by matching feature points

A technology of matching features and random generation, which is applied in character and pattern recognition, computer parts, instruments, etc., and can solve problems such as stamping differences

Inactive Publication Date: 2010-11-24
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The object of the present invention is to provide a definite authenticity identification technical means by providing a counterfeit seal identification method based on matching feature points to randomly generate feature lines. In addition to solving the problems caused by the difference in stamping, it can also benefit from the identification technology. Levels increase the difficulty of counterfeiting seals

Method used

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  • Method for identifying forgery seal based on feature line randomly generated by matching feature points
  • Method for identifying forgery seal based on feature line randomly generated by matching feature points
  • Method for identifying forgery seal based on feature line randomly generated by matching feature points

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Embodiment Construction

[0067] The working process of the technical method for automatic recognition of high-simulation counterfeit seals proposed by the present invention includes two stages of off-line learning of real seals and establishment of a database of feature points of reference seals and on-line identification of seals to be inspected. A specific embodiment is introduced below.

[0068] 1) Offline stage:

[0069] The main task of the off-line stage is to establish a reference database of real seal feature points, and store the real seal image, the position information of the feature points contained in the real seal, descriptor information and other data in the reference database. The present embodiment adopts scanner to obtain the real seal seal text (such as stamped on blank paper) figure 1 shown), extract SIFT feature points (it should be noted that this embodiment takes SIFT local feature points as an example, but this patent does not limit the use of other types of local feature poin...

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Abstract

The invention provides a method for identifying a forgery seal based on a feature line randomly generated by matching feature points. The method comprises the following steps: a step of off-line stage and a step of online identification stage to acquire an image of a seal affixed document containing a seal stamp to be verified by an imaging device; a step of preprocessing the image of the seal stamp to be verified, and a step of extracting an effective stamp image of the seal to be verified; a step of extracting a feature point of the seal image to be verified; a step of extracting the feather point of the image of the seal stamp to be verified, and a step of constructing a database containing location information and descriptor information of each feature point; a step of matching the features point of the seal to be verified with that of a reference seal; a step of randomly generating image feature lines of an identifiable seal to be verified and the reference seal; and a step of evaluating truth or forgery of the seal to be verified. The stamps affixed with the same seal under different situations have the two characteristics of accordant number and distribution of the feature points and accordant image information. The method has the characteristics of simpleness, high efficiency, high identification accuracy and the like, and contributes to seal forgery prevention.

Description

technical field [0001] The invention belongs to the technical field of anti-counterfeiting identification of seals, and in particular relates to a method for identifying counterfeit seals based on randomly generated feature lines of matching feature points, and is specifically aimed at new technologies and methods for automatic identification of counterfeit seals with high simulation. Background technique [0002] In my country, the seal is an important certificate that proves the identity of party and government agencies, enterprises, social organizations and other organizations, represents their rights and interests, and has legal effect. It is an important means for the state to exercise power, manage society, and for citizens and legal persons to exercise civil rights. It plays an extremely important role in social political and economic life. Due to the backwardness of our country in terms of seal management, seal anti-counterfeiting, and counterfeit seal identificatio...

Claims

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Application Information

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IPC IPC(8): G06K9/20G06K9/64
Inventor 郎海涛雷兰一菲
Owner BEIJING UNIV OF CHEM TECH
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