PDF Alteration Detection Using Intra- and Inter-Document Models
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge of detecting altered bank statements and financial documents, which are increasingly manipulated using software tools, poses a significant issue in loan evaluations due to the time, cost, and privacy concerns associated with obtaining authentic statements from applicants.
Innovation Solution
A system and method for analyzing PDF documents by generating an intra and inter document model to identify artifacts, determining intra and inter document scores, and calculating a total alteration score to detect manipulated documents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If authorization is obtained to access financial accounts for authentic statements, then reliability of document verification is improved, but loss of time and ease of operation deteriorate
Solution Approach 1:
The patent replaces the mechanical authentication process (obtaining login credentials and accessing accounts) with an automated optical inspection system that analyzes PDF documents for artifacts of alteration. The system uses image processing and pattern recognition to detect manipulated documents without requiring human reviewers to manually verify authenticity through account access.
Solution Approach 2:
The system creates and analyzes copies of the submitted PDF documents by extracting content and generating models to compare against expected authentic document characteristics. Multiple copies and representations of the document are generated for analysis without accessing the original source account.
2Reliability
If authorization is obtained to access financial accounts for authentic statements, then reliability of document verification is improved, but device complexity and ease of operation worsen
Solution Approach 1:
The patent replaces the complex mechanical authentication process involving credential management, account access, and manual verification with an automated computational system that performs optical analysis of document artifacts. This substitution eliminates the need for complex authorization protocols and account access mechanisms.
3Reliability
If traditional authentication methods are used to verify bank statements, then reliability is improved, but productivity deteriorates
Solution Approach 1:
The patent replaces time-consuming manual authentication processes with automated optical inspection and artifact analysis of PDF documents. The system可以快速ly evaluates multiple documents simultaneously by detecting alteration artifacts, thereby maintaining verification reliability while significantly increasing processing throughput and loan evaluation productivity.
Data Source
AI summary
Analyzing and detecting altered documents is accomplished by accessing a target portable document format (PDF) document and extracting document content information from the target PDF document. The extracted document content information is analyzed to generate an intra document model for the target PDF document and then the extracted document content information is evaluated in accordance with the intra document model. Artifacts in the document content information are identified and an intra document score is determined based on the identified artifacts and their respective weightings. The document content information is evaluated again in accordance with one or more inter document models and artifacts in the document content information are again identified and an inter document score is similarly determined. A total alteration score is also determined based on the intra document score and inter document score.