Content Integrity Watermarking via Unique Data Embedding
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Solution Overview
Problem
Electronic devices face challenges in ensuring content integrity as third parties can maliciously modify and share content, making it difficult to determine if the original content has been compromised.
Innovation Solution
Incorporating unique content information into a watermark image, which is then inserted into the content, allowing for detection and display changes when discrepancies are found, including altering the watermark's display type, size, or removing it when the content is compromised.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a watermark image is inserted into content to ensure integrity, then content security is improved, but device complexity increases
Solution Approach 1:
The system segments the integrity verification function into separate modules: watermark image generation, content insertion, and detection. The watermark image itself is segmented into multiple blocks that can be independently processed and detected, reducing the complexity of the overall system while maintaining integrity verification capabilities.
Solution Approach 2:
The patent introduces a watermark image as an intermediary element between the content and the integrity verification system. This intermediary carries unique information about the content without directly modifying the content itself, simplifying the verification process while ensuring integrity.
2Measurement precision
If unique content information is included in the watermark image, then detection precision is improved, but manufacturing precision requirements increase
Solution Approach 1:
The system changes the parameters of the watermark image dynamically based on the content being processed. The unique information is encoded in a way that adapts to different content types and sizes, allowing high detection precision without requiring extremely precise manufacturing or generation of the watermark image itself.
Solution Approach 2:
Instead of requiring perfect precision in watermark generation, the system uses partial information or redundant encoding in the watermark image. This allows for sufficient detection precision while tolerating minor variations in watermark generation, reducing the stringency of manufacturing precision requirements.
3Ease of operation
If the watermark display type changes when content is compromised, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The system uses visual changes in the watermark image, such as color changes or transparency variations, to indicate content compromise. These visual cues are easily perceived by users without requiring complex interfaces or explanations, improving ease of operation while the underlying detection logic remains managed through automated comparison of unique information.
Solution Approach 2:
Instead of actively notifying users through complex alerts, the system inverts the approach by allowing the watermark image itself to visually indicate the problem state. The compromised content is revealed through changes in the watermark's appearance, making the detection process intuitive and easy to understand for users.
Data Source
AI summary
A method and an apparatus for controlling content integrity. A method for operating in an electronic device can include including unique information of content in a watermark image, and inserting the watermark image to the content.