Camera mapping in virtual experience

By mapping the user's head orientation on the mobile device, animation frames are generated to reflect the user's head movement and changes in background perspective, solving the problem of inaccurate avatar movement in traditional systems, improving the realism of the virtual experience and reducing resource requirements.

CN121844362APending Publication Date: 2026-04-10ROBLOX CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-09-05
Publication Date
2026-04-10

AI Technical Summary

Technical Problem

Traditional systems cannot accurately reflect user movement when generating 3D avatars in virtual experiences, resulting in static backgrounds that cause visual fatigue and nausea.

Method used

By mapping the user's head orientation on the mobile device, the user's head orientation is determined using facial feature points, the orientation of the mobile device is updated, and animation frames are generated to simulate the user's head movement and changes in background perspective.

Benefits of technology

It improves the realism of the virtual experience, reduces user visual fatigue and nausea, and reduces the demand for bandwidth, computing resources, and transmission time.

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Abstract

The meta-universe application receives a first frame of a video. The meta-universe application determines facial feature points of the user in the first frame. The meta-universe application generates an animation frame including an avatar and a background based on the facial feature points and the first frame. The meta-universe application determines a head orientation of the user in the first frame based on the facial feature points. The meta-universe application maps the orientation of the mobile device to the head orientation of the user. For each additional frame of the video after the first frame, the meta-universe application updates the orientation of the mobile device. The meta-universe application generates a subsequent animation frame including the avatar and the background based on the updated orientation of the mobile device relative to the head orientation.
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