Invisible Watermarking for Virtual Avatar Identity Verification
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Solution Overview
Problem
In the metaverse, the theft of virtual avatars and the inability to trace their usage or verify ownership pose significant challenges, as existing technologies struggle to embed invisible watermarks that do not affect the appearance of the avatars.
Innovation Solution
A method is developed to generate a watermarked virtual avatar by creating an image feature based on image blocks and their positions, and a text feature from a watermark, which are then fused to create an invisible watermark that identifies the user's identity in the metaverse.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a visible watermark is added to the virtual avatar to identify user identity, then the ability to verify ownership is improved, but the appearance of the avatar is altered
Solution Approach 1:
The patent applies color changes by embedding the watermark information into the color space of the virtual avatar. The watermark is encoded as subtle color variations that are imperceptible to human eyes but can be detected by computational systems, thus maintaining the avatar's visual appearance while enabling ownership verification
Solution Approach 2:
The patent transitions from visible spatial watermarking to an invisible dimensional embedding within the color/feature space of the avatar. By moving the watermark into the latent space of the avatar's representation, the system achieves invisible watermarking that preserves appearance while maintaining identification capability
2Shape
If an invisible watermark is embedded in the virtual avatar to maintain appearance, then the avatar's appearance is preserved, but the ability to detect and measure the watermark becomes more difficult
Solution Approach 1:
The patent introduces an intermediary feature extraction and encoding mechanism that bridges the invisible watermark embedding and detection. The system uses intermediate feature representations that capture subtle color variations, enabling automated detection systems to identify the watermark without human perception being affected
Solution Approach 2:
The patent replaces human visual perception with computational detection mechanisms. Instead of relying on human eyes to detect the watermark, the system uses machine learning models and feature extraction algorithms that can identify subtle patterns in the avatar's color space that are invisible to humans but detectable by computers
Data Source
AI summary
Embodiments of the present disclosure relate to a method, an electronic device, and a computer program product for processing a virtual avatar. The method includes generating an image feature of the virtual avatar based on a plurality of image blocks of the virtual avatar and corresponding positions of the plurality of image blocks in the virtual avatar. The method further includes generating, based on a watermark to be added to the virtual avatar, a text feature associated with text of the watermark. The method further includes generating a watermarked virtual avatar based on the image feature and the text feature, wherein the watermark is invisible to human beings and identifies an identity of a user of the virtual avatar in a metaverse. Through embodiments of the present disclosure, identification of a virtual avatar, illustratively for verification and/or tracking purposes can be achieved without affecting the appearance of the virtual avatar.