3D Avatar Generation via Head Motion Authentication
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Solution Overview
Problem
Existing avatar generation techniques allow users to input head images that differ from their own, enabling impersonation and potentially leading to malicious damage to an individual's reputation.
Innovation Solution
An avatar generation apparatus that includes a first acquirer for capturing a front face image of a user, a second acquirer for capturing a 3D image of the user's front and side faces upon head motion, an authenticator to verify the user's identity based on these images, and an image generator to create a 3D avatar head image using the verified user's image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a user can input any head image to the virtual fitting apparatus, then the system is easy to operate and accessible, but the system becomes vulnerable to impersonation and malicious use
Solution Approach 1:
The patent applies preliminary action by performing user authentication before allowing avatar generation. The authentication unit verifies the user's identity in advance by comparing captured images with registered biometric data, ensuring that only authorized users can generate avatars. This preliminary verification prevents impersonation attacks while maintaining ease of operation for legitimate users.
2Productivity
If the system uses only a front face image for avatar generation, then the process is simple and fast, but the avatar lacks three-dimensional accuracy and realism
Solution Approach 1:
The patent applies dynamics by capturing images from multiple angles as the user moves their head. The image capture unit acquires front face images and side face images dynamically during head motion, allowing the system to construct a comprehensive 3D avatar model. This dynamic multi-angle capture process improves avatar realism while maintaining operational efficiency through automated sequential capture.
3Manufacturing precision
If the system captures images during head motion, then the avatar achieves accurate 3D representation, but the operation becomes more complex and requires user cooperation
Solution Approach 1:
The patent applies self-service by designing a system where the user's natural head movements automatically trigger the image capture sequence. The control unit detects head motion and autonomously initiates the capture of front and side face images without requiring manual input from the user. This self-service mechanism simplifies the user experience while achieving accurate 3D avatar generation through motion-based capture.
Data Source
AI summary
A server serving as an avatar generation apparatus includes: a first acquirer configured to acquire a first image indicating a front face portion of a user; a second acquirer configured to acquire, in response to a motion of the user's head, a second image indicating the front face portion and a side face portion of the user; an authenticator configured to authenticate the user based on the first and second images; and an image generator configured to generate a head image of a three-dimensional avatar of the user, by using the second image.