Virtual Space Border Detection via Dynamic Viewpoint Control

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Solution Overview

Problem

In virtual reality (VR) environments, users often encounter a loss of immersion when they reach the border of a designated space, as existing technologies either blackout the screen or render non-existent content, disrupting the original world view.

Innovation Solution

An information processing apparatus that tracks user motion and performs distance control to increase the viewpoint's distance from the border region, allowing users to recognize the border without breaking the world view by applying effects like darkening or transforming the space.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the screen is blacked out or CG is rendered when a user moves beyond the border region, then the user movement is limited within the designated range, but the world view is broken and user experience is degraded

Engineering Contradiction:
Improveuser movement limitationVSAvoidworld view consistency
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent applies dynamics by making the border region movable rather than fixed. When the user approaches the border, the border region dynamically moves away from the user's viewpoint, allowing continuous movement without abrupt interruptions. This dynamic adjustment maintains the world view consistency while still limiting the effective movement range within the designated space.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent changes the parameter of border region position based on the user's distance to the actual border. As the user approaches the physical border, the virtual border region is pushed further away, transforming the boundary condition from a fixed barrier to a dynamic parameter that adapts to user position, thereby maintaining immersion while enforcing movement limits.

Inventive Principle:
Principle #35Parameter changes

2Shape

If the border region is fixed at a specific position, then the virtual space has clear boundaries, but the user cannot intuitively recognize the border without breaking the world view

Engineering Contradiction:
Improvevirtual space boundary definitionVSAvoidborder recognition
Core Design Contradiction:
ShapeVSDifficulty of detecting and measuring

Solution Approach 1:

The patent implements feedback by making the border region's position respond to the user's approach. As the user moves closer to the actual border, the virtual border region is pushed further away, creating a feedback loop that gradually reveals the boundary condition. This feedback mechanism allows users to intuitively recognize the border's presence through the changing spatial relationship rather than through explicit visual markers that would break the world view.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS11695908B2Information processing apparatus and information processing method
Publication Date: 2023.07.04 SONY GROUP CORP
  • US11695908B2 patent drawing
  • US11695908B2 patent drawing
  • US11695908B2 patent drawing

AI summary

There is provided an information processing apparatus, information processing method, and recording medium that each allow a user to recognize a border of a virtual space without breaking the world view of the virtual space. The information processing apparatus includes a control unit that tracks a motion of a user to present an image of a virtual space to the user, and performs distance control to increase a distance between a viewpoint of the user and a border region in the virtual space while an operation of the user coming closer toward the border region is being inputted. The border region is fixed at a specific position in the virtual space.