Watermark Embedder with Descriptive Metadata for Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for embedding multiple watermarks in a single piece of content often result in interference and increased detection difficulty, leading to unacceptable disruption of the actual useful information and increased effort in extraction.
Innovation Solution
Incorporating descriptive information within the information representation that details the embedding of watermarks, allowing a detector to control and streamline the watermark extraction process by specifying which watermarks to extract and using appropriate detection parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple watermarks are embedded in a single piece of content using conventional methods, then the watermark embedding capacity is improved, but the detection difficulty and interference with useful information increase
Solution Approach 1:
The embedder adds descriptive information about the watermarks to the information representation before detection. This preliminary action provides the detector with advance knowledge about which watermarks are present and their embedding parameters, eliminating the need for complex search processes and reducing detection difficulty when multiple watermarks are embedded
Solution Approach 2:
The descriptive information acts as feedback from the embedder to the detector, providing guidance about the watermark embedding characteristics. This feedback mechanism enables the detector to efficiently identify and extract multiple watermarks without excessive computational effort, resolving the contradiction between embedding capacity and detection difficulty
2Quantity of substance
If multiple watermarks are embedded in a single piece of content, then the watermark embedding capacity is improved, but the interference with useful information becomes unacceptably large
Solution Approach 1:
The patent applies different embedding strategies to different watermarks based on their specific requirements. Each watermark can be embedded with customized parameters (such as different frequency bands or temporal patterns) that minimize interference with the useful information while maintaining the specific characteristics needed for each watermark's detection and function
3Loss of information
If conventional methods are used to extract multiple watermarks, then the extraction completeness is improved, but the effort required greatly increases
Solution Approach 1:
The embedder provides descriptive information that outlines which watermarks are present and their embedding parameters before extraction begins. This preliminary action allows the detector to directly target the specific watermarks for extraction without needing to perform exhaustive searches, significantly reducing extraction effort while maintaining completeness
Solution Approach 2:
Based on the descriptive information, the detector can directly extract only the relevant watermarks from the information representation, eliminating unnecessary processing of non-watermark content. This targeted extraction approach maintains extraction completeness while dramatically reducing the time and computational effort required
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
The invention relates to an embedder for embedding a watermark in a representation of input information, comprising an information inserter that is designed to provide the representation of input information with the watermark and additional information that is to be inserted in order to obtain a representation of input information that is provided with a watermark and the additional information. The additional information that is to be inserted comprises descriptive information describing the embedding of the watermark or watermarks in the representation of input information.