AR technology-based contract tampering real-time inspection method and system

Abstract

The invention provides a contract tampering real-time inspection method and system based on an AR technology, and the method comprises the steps: a contract preprocessing step, which is used for extracting the image feature parameters of an obtained original contract; an image input step which is used for acquiring a to-be-signed contract image; an image matching step: according to the to-be-signed contract image, extracting image feature parameters of the to-be-signed contract, and matching the image feature parameters of the to-be-signed contract with the image feature parameters of the original contract; and a tampering detection step: marking an abnormal region according to a matching result. The inspection system comprises a contract preprocessing module; an image matching module; and a tamper detection module. The tampered content in the contract to be signed can be quickly checked, and time and labor are saved.

Description

technical field [0001] The invention belongs to the technical field of contract inspection, in particular to a method and system for real-time inspection of contract tampering based on AR technology. Background technique [0002] At present, during the signing process of important paper documents such as contracts, there is a certain risk of malicious tampering. The methods of tampering mainly include the following two types: [0003] 1. Directly tamper with the electronic version of the contract, and then print and seal it. [0004] 2. Replace a certain piece of paper in the paper contract, rewrite the content and print it and insert it into the contract. [0005] Therefore, in the process of signing most contracts, both companies need to have special personnel to compare and verify the contract to identify whether there is any change in the contract. However, the comparison and verification process is time-consuming and laborious, especially for companies with frequent c...

AI Technical Summary

Problems solved by technology

[0005] Therefore, in the process of signing most contracts, both companies need to have special personnel to compare and verify the contract to identify whether there is any change in the contract. However, the comparison and verification process is time-consuming and laborious, especially for companies with frequent cross-regional business transactions. If the comparative verification is performed artificially, the process of comparative verification will be more time-consuming and laborious, and if the comparative verification is performed artificially, there will be a risk of missing checks

[0006] Therefore, some contract inspection technologies have also appeared on the market, such as the patent No. CN112581455A, which discloses a method and system for identifying contract tampering. In this patent, the original contract and the contract to be signed are scanned into pictures page by page. , and then image comparison, although the workload of manual comparison is reduced, the technology disclosed in this patent can only judge that a certain page of the contract to be signed has been tampered with, and it is still necessary to manually compare and proofread a certain page of the tampered test, time-consuming

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