CN-121982343-A - Automatic checking machine for contract signature and checking method thereof

CN121982343ACN 121982343 ACN121982343 ACN 121982343ACN-121982343-A

Abstract

The invention relates to the technical field of automatic document processing and anti-counterfeiting verification, and discloses an automatic contract signature verification machine and a verification method thereof, wherein the automatic contract signature verification machine comprises an equipment main body, and an image acquisition port, an electronic contract input port, a paper outlet and a display screen which are arranged on the equipment main body; the main control module is used for receiving the paper contract scanning image data transmitted by the image acquisition port, carrying out image preprocessing and signature feature extraction on the scanning image data and comparing the scanning image data with a pre-stored sample. The dual-mode compatible processing of the paper contract and the electronic contract is realized by arranging the image acquisition port and the electronic contract input port and matching with a logic judgment unit in the main control module.

Inventors

YANG RUI
HUANG XINDAO
SUN XIAOCHEN
ZHU MINGKE
LIU YUE
LIU YANG
LIU HONGYE
LIU YANSHENG
WANG XIN
SHAO QI
ZHANG QIAN
LI SHUHE
WU XIAOQIAN
WANG QIANG
SHI YAN
WANG YUNJIE
JIN YICHENG
SUN QIAN
YANG FENG
ZHANG DONGDONG
ZHAO BIN

Assignees

国网天津市电力公司物资公司

Dates

Publication Date: 20260505
Application Date: 20251219

Claims (10)

1. The automatic contract signature checking machine is characterized by comprising an equipment main body (1), an image acquisition port (2), an electronic contract input port (3), a paper outlet (4) and a display screen (5) which are arranged on the equipment main body (1), wherein a main control module is further arranged in the equipment main body (1), and the main control module is respectively in communication connection with the image acquisition port (2), the electronic contract input port (3) and the display screen (5); The master control module is used for executing the following operations: Receiving paper contract scanning image data transmitted by the image acquisition port (2), performing image preprocessing and signature feature extraction on the scanning image data, and comparing the scanning image data with a pre-stored sample; Receiving an electronic contract file transmitted by the electronic contract input port (3), and analyzing the electronic contract file to verify signature positions and digital certificate validity; And controlling the display screen (5) to output a signature verification result of the paper contract or the electronic contract.
2. The automatic checking machine for signature of paper according to claim 1, wherein said main control module is specifically adapted to, when processing scanned image data of paper signatures: denoising, binarizing and edge detecting are carried out on the scanned image by utilizing an image processing algorithm, and independent signature area images are segmented; performing feature vectorization on the signature region image by using a machine learning algorithm, and extracting texture, shape and character features of the signature; And carrying out similarity calculation on the extracted features and recorded signature samples pre-stored in a database, and judging the authenticity of the signature according to a calculation result.
3. The automatic checking machine for signing and sealing a contract according to claim 1, wherein the main control module is specifically used for processing the electronic contract document: analyzing the content of the electronic contract by utilizing an OCR (optical character recognition) technology, extracting the coordinate positions and the number of the electronic signature, and comparing the coordinate positions and the number with preset business rule parameters; and calling a preset electronic signature auxiliary control by utilizing an RPA technology, reading digital certificate information in the electronic contract through the control, and checking signature integrity and a certificate validity period.
4. The automatic contract signing and verifying machine according to claim 3, wherein the electronic signature auxiliary control is a you tai electronic signature control, and the main control module simulates input instructions through an RPA script and invokes electronic contract signing and verifying results generated by the you tai electronic signature control in batches.
5. A contract signing automatic check machine as claimed in claim 2, wherein said master control module employs a convolutional neural network model to identify signature features, said model being used to enable updating model weight parameters based on newly added signature samples.
6. The automatic checking machine for paper contract signing according to claim 1, wherein the image acquisition port (2) comprises an optical scanning module or a camera assembly for acquiring surface image data of paper contracts, and the paper outlet (4) is used for discharging the paper contracts after image acquisition is completed.
7. A machine for automatically checking a contract seal according to claim 1, characterized in that said electronic contract input port (3) comprises a universal serial bus interface or a wireless network communication module for establishing a data connection to receive an electronic contract document in PDF format.
8. The automatic checking machine for contract and signature according to claim 1, wherein the display screen (5) is a touch interaction screen, and is used for displaying checking progress, checking and signature authenticity judging results, position abnormality prompting and quantity inconsistency alarming information.
9. A machine for automatically verifying the signature of a contract according to claim 1, characterized in that said device body (1) further comprises a data storage unit for storing a database of recorded signature samples, a history verification record and a generated verification report.
10. A method of checking a contract signing automatic checking machine according to any one of claims 1 to 9, comprising the steps of: s1, receiving an electronic contract file through an electronic contract input port (3), or acquiring image information of a paper contract through an image acquisition port (2); S2, identifying the type of the current input source, if the type is an electronic contract, entering a step S3, and if the type is a paper contract, entering a step S4; S3, OCR recognition is carried out on the electronic contract to verify the position and the number of the signature, and an RPA technology is utilized to call an electronic signature auxiliary control to verify the digital validity of the signature, so that a first verification result is generated; S4, preprocessing the paper contract image, extracting signature feature vectors, and comparing the feature vectors with a recorded signature sample library to generate a second verification result; S5, controlling a display screen (5) to output the first verification result or the second verification result, and marking the abnormal signature.

Description

Automatic checking machine for contract signature and checking method thereof Technical Field The invention relates to the technical field of automatic document processing and anti-counterfeiting verification, in particular to an automatic contract signature verification machine and a verification method thereof. Background Along with the acceleration of the enterprise management digitization process, the signing amount of various business contracts is increased gradually, and contract verification is used as a key link of risk control, so that strict auditing is required for the authenticity of the seal and the validity of the digital signature. Currently, in the process of signing and managing a contract, a mixed business scenario of coexistence of a paper contract and an electronic contract generally exists. For verification of paper contracts, the prior art has relied on human eye comparison or basic image scan archiving. The manual auditing mode is low in efficiency and is easily influenced by the fatigue degree and subjective experience of the inspector, so that the high-imitation fake chapter is missed. Although some devices introduce image recognition technology, most of the devices adopt a static template matching algorithm, when the conditions of unclear stamping, mutual overlapping of stamps or complex texture of paper background are met, the recognition accuracy can be greatly reduced, and the solidified algorithm cannot adapt to the continuously renovated forging means through self-learning, so that long-term verification reliability is difficult to ensure. For checking electronic contracts, the prior art is often focused on simple digital certificate background verification, and the check of the compliance of the business such as signature positions, quantity and the like in the same layout is omitted. In addition, the electronic signature generated by different platforms often needs a specific reader or control to view the certificate details, when facing massive contract files, an automatic batch processing means is lacking, operators often need to open the files one by one and manually click the signature to confirm the certificate state, and the complicated man-machine interaction process severely restricts the service processing speed. Meanwhile, the conventional verification device is single in function, and cannot be compatible with processing paper and electronic contracts on one terminal, so that enterprises need to configure a plurality of independent software and hardware systems, and the purchase cost of the device and the complexity of data management are increased. Disclosure of Invention Aiming at the defects of the prior art, the invention provides an automatic checking machine for a contract signature and a checking method thereof, and solves the problems that the existing contract checking technology has low paper signature recognition precision, lacks self-adaptive capability, relies on manual operation for electronic signature verification and lacks layout compliance checking, and the single equipment cannot be compatible with processing paper and electronic bimodal contracts, so that the checking efficiency is low and the management cost is high. The automatic contract signature checking machine comprises an equipment main body, an image acquisition port, an electronic contract input port, a paper outlet and a display screen, wherein the image acquisition port, the electronic contract input port, the paper outlet and the display screen are arranged on the equipment main body; The master control module is used for executing the following operations: receiving paper contract scanning image data transmitted by the image acquisition port, performing image preprocessing and signature feature extraction on the scanning image data, and comparing the scanning image data with a pre-stored sample; receiving an electronic contract file transmitted by the electronic contract input port, and analyzing the electronic contract file to verify signature positions and digital certificate validity; And controlling the display screen to output a signature verification result of the paper contract or the electronic contract. Preferably, the main control module is specifically used for processing scanned image data of the paper contract: denoising, binarizing and edge detecting are carried out on the scanned image by utilizing an image processing algorithm, and independent signature area images are segmented; performing feature vectorization on the signature region image by using a machine learning algorithm, and extracting texture, shape and character features of the signature; And carrying out similarity calculation on the extracted features and recorded signature samples pre-stored in a database, and judging the authenticity of the signature according to a calculation result. Preferably, the main control module is specifically used for processing the electronic contract file: analyzing the c