Multi-bit Data Embedding in Copy-guarded Images via Pattern Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current image processing systems can only embed limited amounts of data in copy guarded documents, typically restricted to one-bit information, which is insufficient for more complex data requirements.
Innovation Solution
The system embeds data into an original image by generating a processed image with multiple patterns that have a relative relationship, allowing for the embedding of multiple bits of information, and extracts this data by analyzing the relative relationship of the patterns in the image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a single pattern is used to embed data in copy guarded documents, then the embedding process is simple, but the data capacity is limited to one bit
Solution Approach 1:
The invention divides the data embedding into multiple segments by using multiple patterns (first pattern and second pattern) instead of a single pattern. Each pattern can represent one bit of data, enabling multi-bit data capacity while maintaining relatively simple individual pattern structures
Solution Approach 2:
The invention combines multiple patterns (first pattern and second pattern) with different orientations into a unified embedded structure. The relative positional relationships between these patterns encode multi-bit information, achieving increased data capacity through combination rather than complexification of individual elements
2Quantity of substance
If multiple patterns with relative relationships are embedded, then multi-bit data capacity is achieved, but the detection and analysis complexity increases
Solution Approach 1:
The invention uses asymmetric orientation relationships between patterns (e.g., first pattern at 0 degrees and second pattern at 45 degrees) to encode data. This asymmetric arrangement creates distinct, easily distinguishable patterns that simplify detection and analysis while enabling multi-bit data capacity
Solution Approach 2:
The invention changes the orientation parameter of patterns to encode data information. By varying the relative angles and positions of patterns, multi-bit data can be embedded and detected through simple angular measurements, reducing analysis complexity
3Reliability
If data is embedded in the original image, then document security is enhanced, but the image processing complexity increases
Solution Approach 1:
The invention applies data embedding locally within the image by inserting patterns at specific positions (such as in the background or margin areas) rather than processing the entire image uniformly. This localized approach enhances document security while minimizing overall image processing complexity
Solution Approach 2:
The invention uses simple geometric patterns that can be repeatedly copied and placed at different positions in the image. These pattern copies encode data through their relative arrangements, enhancing security through embedding while keeping the processing method simple and repetitive rather than complex
Data Source
AI summary
An apparatus, method, system, computer program and product, each capable of embedding data into a document or extracting embedded data from document. The data to be embedded may be embedded in the form of a plurality of patterns having a relative relationship.