Multi-Source Watermarking for Video Surveillance Tampering
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Solution Overview
Problem
Current digital watermarking systems in video surveillance are susceptible to tampering and counterfeiting as they generate watermarks from a single source of data, making it easy for criminals to alter or delete video files without being detected.
Innovation Solution
Generating watermarks from data of multiple video sources, combining selected video frame regions from other monitors to create a file where each video frame has different watermarks, increasing the complexity and security of the video file.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If digital watermarking is implemented using a single source of data, then the watermarking process is simple and fast, but the system becomes susceptible to tampering and counterfeiting
Solution Approach 1:
The patent combines data from multiple video sources (at least two different video streams) to generate a single watermark. This merging of multiple data sources increases the reliability and security of the watermark against tampering, while the systematic combination method keeps the implementation complexity manageable.
Solution Approach 2:
The watermark is constructed as a composite derived from multiple independent video sources rather than a single source. This composite structure makes the watermark more resistant to counterfeiting and tampering, as an attacker would need to compromise multiple independent sources simultaneously.
2Reliability
If watermarks are generated from multiple video sources, then the security and accuracy of video files are enhanced, but the processing time and computational resources increase
Solution Approach 1:
The patent extracts only the necessary features and data from multiple video sources rather than processing entire video streams. By taking out only the essential elements needed for watermark generation, the system maintains high verification accuracy while reducing processing time and computational overhead.
3Object-affected harmful factors
If watermarks are generated from multiple video sources, then the complexity of counterfeiting increases, but the ease of operation for legitimate users decreases
Solution Approach 1:
The system automatically manages the complexity of multi-source watermark generation through automated processes. Once configured, the system handles the complex operations of fetching data from multiple sources, generating watermarks, and embedding them without requiring manual intervention, thus maintaining ease of operation for legitimate users while increasing counterfeiting difficulty.
Data Source
AI summary
A method, computer program product, and system for generating and embedding a watermark in digital video frame include a processor obtaining a request to generate a watermark and embed the watermark in a digital video frame captured by a first monitor. Based on obtaining the request, the processor fetches from one or more pre-defined regions of a memory resource, digital video data captured by at least two monitors, where a timestamp of the digital video data is equal to a timestamp of the digital video frame. The processor generates a watermark from the digital video data by calculating a binary result of the digital video data. The processor embeds the watermark (binary result) in the digital video frame.