Head-Mounted Display Viewpoint Control via Head Movement
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Solution Overview
Problem
Existing virtual reality and augmented reality systems lack intuitive methods for changing the viewpoint, leading to a less immersive experience for users.
Innovation Solution
A display control method using a head-mounted device that generates virtual space data and updates the visual-field image by moving a virtual camera in accordance with the movement of the head-mounted device, changing the rendering range and camera position to reflect upward/downward and horizontal movements, while maintaining a constant viewpoint position in the visual-axis direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a group of operation buttons are operated to change the visual-field angle, then the viewpoint can be changed, but the operation becomes complex and less intuitive
Solution Approach 1:
The system automatically changes the viewpoint by detecting the user's head movement through the head-mounted device, eliminating the need for manual operation of buttons or controls. The viewpoint adjustment serves itself based on the user's natural motion, making the operation intuitive and simple.
2Ease of operation
If the rendering range of the virtual camera is changed to reflect upward/downward movement, then the viewpoint becomes more intuitive, but the movement amount of the virtual camera in horizontal direction must be adjusted to maintain proper scaling
Solution Approach 1:
The system dynamically adjusts the rendering range and horizontal movement amount based on the detected upward/downward movement. When the user moves the head upward or downward beyond a threshold, the rendering range changes and the horizontal movement scaling is automatically adjusted, creating a dynamic response that maintains intuitive control throughout the motion range.
Data Source
AI summary
A display control method for execution by a system including a head-mounted device. The display control method includes generating virtual space data for defining a three-dimensional virtual space. The display control method further includes displaying a visual-field image on the head-mounted device based on a visual field of the virtual space data. The display control method further includes updating the visual-field image in response to a detected movement of the head-mounted device exceeding a threshold. Updating the visual-field image includes changing a scale of an object in the virtual space by adjusting an angular range of the visual-field image.