VR Goggles Virtual Camera Angle of View Adjustment
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Solution Overview
Problem
Current image display systems for virtual reality (VR) struggle to reduce the occurrence of VR sickness when users view stereoscopic images using goggles, particularly during zooming and head movements.
Innovation Solution
An image display system that adjusts the angle of view of a virtual camera within a goggles apparatus, reducing the display area of stereoscopic images by setting the angle of view to a second angle smaller than the first, and using a parallax adjustment to minimize the stereoscopic effect, while maintaining similar shapes and orientations to reduce user discomfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the angle of view of the virtual camera is reduced to enlarge a part of the virtual space, then the display area of the stereoscopic image is reduced, but the user may experience VR sickness due to the enlarged image looking different from normal time
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the angle of view of the virtual camera between a first angle of view (normal) and a second angle of view (enlarged). When the second angle of view is used to display an enlarged portion of virtual space, the system simultaneously changes the display area parameter to a smaller size, creating a coordinated parameter adjustment that reduces VR sickness while maintaining the enlarged view functionality
2Adaptability or versatility
If the display area of the stereoscopic image is reduced during zooming, then the enlarged image can be displayed, but the user may feel discomfort due to the change in display characteristics
Solution Approach 1:
The patent implements dynamics by making the angle of view of the virtual camera adjustable between a first angle of view and a second angle of view. This dynamic adjustment allows the system to adapt to different viewing requirements (normal view vs. enlarged view) while managing user comfort through coordinated changes in display area and stereoscopic effect intensity
3Area of moving object
If the stereoscopic effect is reduced during zooming, then the display area can be minimized, but the parallax between left and right eye images may cause VR sickness
Solution Approach 1:
The patent applies parameter changes by adjusting the angle of view between first and second angles, which indirectly controls the parallax between left and right eye images. When the second angle of view is used for enlarged display, the system changes the display area parameter and manages the stereoscopic effect to reduce excessive parallax, thereby reducing VR sickness while maintaining the enlarged view
Data Source
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AI summary
An example of an image display system includes a goggles apparatus and is capable of setting an angle of view of a virtual camera to a first angle of view or a second angle of view smaller than the first angle of view. If the angle of view of the virtual camera is set to the second angle of view, the image display system generates an image for a left eye and an image for a right eye in each of which a part of the virtual space is enlarged, and displays the enlarged images for a left eye and for a right eye on a display of the goggles apparatus such that display areas of the enlarged images for a left eye and for a right eye are smaller than display areas if the angle of view of the virtual camera is set to the first angle of view.