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Method and device for automatically identifying signature stamp or handwritten signature

A handwritten signature and automatic recognition technology, applied in the field of image recognition, to achieve the effect of improving the recognition speed

Active Publication Date: 2018-11-30
BEIJING UCAP INTERNET TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the unit's official seal or personal signature is leaked and copied by criminals, it may cause great property loss and negative social impact on the unit. If the unit's official seal and leader's signature in the web page can be automatically identified , it is beneficial for the unit to prevent, avoid losses, and protect its own rights and interests

Method used

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  • Method and device for automatically identifying signature stamp or handwritten signature
  • Method and device for automatically identifying signature stamp or handwritten signature

Examples

Experimental program
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Effect test

Embodiment 1

[0023] figure 1 It is a flow chart of a method for automatically identifying signature stamps or handwritten signatures of the present invention, and the method specifically includes the following steps:

[0024] S1. Generate a feature matrix M of M1xM2 according to the feature picture, the feature picture is a picture containing a signature stamp or a handwritten signature, wherein M1 and M2 are positive integers.

[0025] The feature matrix specifically includes the following steps to generate: define an m x m scanning window, m is an integer greater than 4 and less than 10, the length and width of the scanning window are respectively less than the length and width of the target picture, and the scanning window in this embodiment is A scanning window of 5X5 pixels scans the feature picture through the scanning window, converts the pixel feature in each scanning window into a number, and finally forms a M1xM2 feature matrix of the feature picture, M1 and M2 are positive integ...

Embodiment 2

[0033] figure 2 A device for automatically identifying signature stamps or handwritten signatures provided by the present invention includes:

[0034] Picture input module: input characteristic picture and target picture, wherein, described characteristic picture is the picture that contains signature seal or handwritten signature; picture;

[0035] Feature matrix generation module generates feature matrix M, N of feature picture, target picture respectively; The generation module of described feature matrix specifically includes the following content: define an m x m scan window, m is an integer greater than 4 and less than 10, such as 5×5 pixel The scanning window scans the picture through the scanning window, converts the pixel feature in each scanning window into a number, and finally forms a feature matrix of the feature picture; the pixel feature is the gray value matrix or binarization of the picture pixel The processed matrix; the pixel feature in the scanning windo...

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PUM

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Abstract

The invention provides a method for automatically identifying a signature stamp or a handwritten signature, which comprises the following steps: S1, generating a feature matrix M of M1xM2 according toa feature picture, wherein the feature picture is a picture containing a signature stamp or a handwritten signature; S2, obtaining a target picture and obtaining a feature matrix N of N1xN2 of the target picture, wherein the target picture is a picture to be identified; S3, judging whether the target picture contains the signature stamp or the handwritten signature in the feature picture by judging whether the feature matrix N contains the matrix M; if yes, determining that the target picture contains the feature picture; namely, the target picture contains the signature stamp or the handwritten signature in the feature picture; otherwise, not containing. Meanwhile, the invention further provides a device for automatically identifying the signature stamp or the handwritten signature. By adoption of the embodiment of the present invention, the signature stamp or the handwritten signature can be checked easily and quickly.

Description

technical field [0001] The invention belongs to the technical field of image recognition, and in particular relates to a method and a device for recognizing signature stamps or handwritten signatures. Background technique [0002] With social development and scientific and technological progress, computers and the Internet have become an indispensable part of people's daily life. More and more information is exposed to the Internet and the public. Personal handwritten signatures, corporate seals, etc. are of great importance to individuals and legal entities Signature confirmation is required for the signing of the contract and the publication of the report. However, if the unit's official seal or personal signature is leaked and copied by criminals, it may cause great property loss and negative social impact on the unit. If the unit's official seal and leader's signature in the web page can be automatically identified , it is beneficial for the unit to prevent, avoid losse...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/20
CPCG06V40/33G06V10/225
Inventor 汪敏刘鹏飞尹娜杨帅刘京成
Owner BEIJING UCAP INTERNET TECH