Document Image 2D Barcode Security via Text Word Embedding
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Solution Overview
Problem
Existing image processing systems face challenges in enhancing the reliability and security of document images, as password protection is vulnerable to cracking and widespread adoption of ground tints for paper documents is limited, and QR codes, while common, may not ensure sufficient security if easily cracked.
Innovation Solution
An image processing apparatus and method that incorporates a processor-controlled system to recognize text in document images, extract words, sequentially select and insert symbols or characters from a login password as underscores between words, and convert the resulting character string into a QR code, assigning it to the document image, thereby increasing security and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If password protection is used to increase reliability and security of document images, then security is improved, but the system becomes vulnerable to cracking and password leakage
Solution Approach 1:
The invention extracts the security verification function from traditional password protection and embeds it directly into the document image through a QR code. The QR code contains encoded verification information (including password hash and document content hash) that is visually integrated into the document, allowing security verification without relying on separate password storage that is vulnerable to cracking.
Solution Approach 2:
The QR code serves as an intermediary between the document content and the security verification system. Instead of directly using passwords or ground tints, the system creates a QR code that encodes verification data and embeds it within the document image, making the security mechanism both crack-resistant and widely compatible.
2Reliability
If ground tint is embedded into paper document to restrict copying and take-out, then reliability is improved, but devices capable of generating and reading ground tints are not widespread
Solution Approach 1:
The invention uses QR codes, which are a universally recognized and widely supported format across numerous devices and systems. By encoding security verification information in a QR code that can be generated and read by standard devices, the system achieves both high security and broad device compatibility, overcoming the limitation of ground tint technology.
3Adaptability or versatility
If QR code is applied as code information, then adaptability is improved, but security may not be sufficient if easily cracked
Solution Approach 1:
The invention nests multiple layers of security information within the QR code structure. The QR code contains not only the password hash but also a hash of the document content, creating a nested verification system where both the password and document integrity are verified simultaneously. This multi-layered approach within the universally compatible QR code format enhances security while maintaining adaptability.
Data Source
AI summary
In an image processing apparatus, upon input of first identification information through an identification information input device and a first document image through an image input device, a control device functioning as a controller recognizes a first text in the first document image, extracts a plurality of words constituting the first text, selects first symbols or characters from the first identification information in a predetermined first order, selects first words from the plurality of words in a predetermined second order, inserts, upon each selection of the first symbol or character and the first word, a predetermined sign and the first symbol or character between the first word and the next first word to generate a first character string, converts the first character string to a first 2D barcode, and assigns the first 2D barcode to the first document image. An output device outputs the first 2D barcode-assigned first document image.