Digital Watermarking via Non-Linear Random Lines
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Solution Overview
Problem
Current digital watermarking methods are ineffective in preventing unauthorized copying and modification of digital content, especially when physical copies are made, as they can be easily removed or altered, compromising certification and authenticity.
Innovation Solution
A digital watermarking system that overlays non-linear lines with random spacing on digital content, making it difficult to remove or modify without disturbing the watermark, by using a series of non-linear lines and text with random characteristics, which are visible in both digital and physical forms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional digital watermarking is used, then the watermark can be embedded in digital content, but the watermark can be easily removed or altered through digital or physical copying
Solution Approach 1:
The patent applies curvature by using non-linear lines (curved lines) instead of straight lines to form the watermark pattern. This curvature makes the watermark more resistant to removal techniques that work on linear patterns, as the curved lines distribute visual information more complexly across the image, requiring more sophisticated manipulation to remove or alter the watermark without noticeable artifacts.
Solution Approach 2:
The patent introduces randomness in multiple dimensions - the lines have random spacing in both x and y axes, and the lines themselves are non-linear. This multi-dimensional randomness creates a complex pattern that is difficult to remove or alter, as any modification would require coordinated changes across multiple dimensions to maintain the watermark's integrity while removing it, which is computationally infeasible.
2Reliability
If the watermark is made more complex to prevent removal, then the watermark becomes harder to remove, but the complexity of the watermarking system increases
Solution Approach 1:
The watermark is segmented into multiple individual lines distributed across the image. Each line is a simple graphical element, but collectively they form a complex pattern. This segmentation allows the system to achieve high resistance to removal through the aggregate complexity of many simple elements, rather than requiring a single complex watermark structure.
Solution Approach 2:
The patent changes parameters of the watermark lines - specifically making them non-linear and introducing random spacing in x and y axes. These parameter changes transform simple linear patterns into complex non-linear patterns, significantly increasing resistance to removal while maintaining a relatively simple generation process that only requires modifying line equations and spacing parameters.
Data Source
AI summary
A computer implemented method and a system configured to receive digital content; draw the digital content onto a drawing board; draw a watermark on the drawing board over the digital content, the watermark comprising a series of non-linear lines with the lines having random spacing therebetween in the x and y axes, and save the content of the drawing board in a desired file format.