Video Object Attribute Watermarking for Robust Leak Tracing
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Solution Overview
Problem
Existing watermarking technologies are vulnerable to new temporal and spatial attacks and lack robustness, making them ineffective in protecting digital content copyrights and tracing leakage paths.
Innovation Solution
A video watermarking method that transforms attributes of background objects in a video based on user-specific codes, using a code matching rule to embed imperceptible watermarks, allowing for robustness against attacks and enabling tracing of leakage paths by decoding user IDs from transformed attributes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional watermarking methods are used to protect digital content, then copyright protection is provided, but the watermarking is vulnerable to temporal and spatial attacks and lacks robustness
Solution Approach 1:
The patent transforms parameters of background objects (color, texture, shape) to embed watermark information. By changing physical parameters of objects in the video rather than adding traditional watermarks, the system achieves robustness against temporal and spatial attacks while maintaining reliability for copyright protection and leakage tracing.
Solution Approach 2:
The patent applies watermarking selectively to background objects rather than the entire video or prominent foreground elements. By modifying local properties of specific background objects with different user-specific codes, the system creates imperceptible yet robust watermarks that resist attacks while enabling leakage path tracing.
2Reliability
If watermarking is made imperceptible to protect user experience, then watermark robustness may be compromised, but the patent achieves both imperceptibility and robustness
Solution Approach 1:
The patent applies watermarking only to background objects that are less noticeable to users, rather than modifying prominent foreground elements. This local approach ensures the watermark remains imperceptible to users while maintaining robustness through parameter transformation of selected background objects with user-specific codes.
Solution Approach 2:
The system transforms parameters (color, texture, shape) of background objects to embed watermark information. These parameter changes are subtle enough to remain imperceptible to users but sufficient to provide robust watermarking that can withstand temporal and spatial attacks while enabling leakage tracing.
3Loss of information
If user-specific codes are embedded in video objects, then leakage path tracing is enabled, but the complexity of determining and transforming objects increases
Solution Approach 1:
The patent assigns different user-specific codes to different background objects locally. This approach enables leakage path tracing by identifying which specific background object was modified, while managing complexity by focusing transformations on selected background objects rather than processing the entire video frame.
Solution Approach 2:
The patent segments the video content by identifying and selecting specific background objects for watermarking. By dividing the video into distinguishable objects and applying user-specific codes to selected background elements, the system enables leakage tracing while managing computational complexity through targeted processing of segmented regions.
Data Source
AI summary
There is provided an object attribute-based watermarking method for preventing leakage of a digital content. A video watermarking method according to an embodiment may acquire a requested video and watermarking information upon receiving a request for video streaming from a user, may determine some of objects appearing in the video according to the watermarking information, may transform attributes of the determined objects, and may stream the transformed video. Accordingly, by watermarking an attribute of an object appearing in a video differently according to a user and providing the video, a watermark may be difficult to perceive, robustness against various attacks may be guaranteed, and a leakage path of a content may be checked.