Stereoscopic Display Depth Control via Parallax Adjustment
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Solution Overview
Problem
Existing technologies for displaying virtual objects in XR environments, such as those described in Japanese Patent Application Publication No. 2016-62593, often fail to properly display virtual objects in a way that does not cause an awkward feeling for the user, particularly when the virtual object's totality is not adequately rendered.
Innovation Solution
A control device that controls a display device to perform stereoscopic display of virtual objects in a three-dimensional space, using right-eye and left-eye displays. The device includes an object detection unit, a distance detection unit, and a control unit that adjusts the depth position of the virtual object by controlling its parallax between the right-eye and left-eye displays, based on the distance to the closest object in the display direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a virtual object is displayed at the back of a physical object, then the display avoids blocking real-world objects, but the virtual object may not be fully visible and causes an awkward feeling for the user
Solution Approach 1:
The patent dynamically adjusts the depth position of the virtual object based on the distance to the physical object. When the physical object is close to the user, the virtual object is positioned further back; when the physical object is far, the virtual object can be positioned closer or fully visible. This dynamic positioning resolves the contradiction by adapting to different viewing scenarios.
Solution Approach 2:
The system changes the depth parameter of the virtual object based on detected distance information. By modifying the z-coordinate or depth buffer value of the virtual object according to the physical object's distance, the system ensures the virtual object is fully visible while maintaining natural spatial relationships, thus preventing the awkward feeling.
2Loss of information
If the virtual object is positioned closer to the user, then the virtual object is more visible, but it may block the view of physical objects in the real world
Solution Approach 1:
The depth position of the virtual object is dynamically adjusted based on the distance to physical objects in the scene. This dynamic positioning ensures that virtual objects are placed at appropriate depths to be visible without unnecessarily blocking real-world objects, resolving the contradiction between visibility and occlusion.
3Device complexity
If fixed depth positioning is used for virtual objects, then the display system is simple, but the virtual object may appear at unnatural positions relative to physical objects
Solution Approach 1:
The system adjusts the depth parameter of virtual objects based on detected distance information from physical objects. This parameter change ensures that virtual objects are positioned at natural depths relative to the real world, improving spatial accuracy without requiring complex additional hardware.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution allows for the effective display of virtual objects in a manner that does not cause an awkward feeling for the user, ensuring proper rendering and positioning of virtual objects in relation to real-world objects.
Implementation Method 1
the control unit controls a depth position of the virtual object by controlling a parallax of the virtual object between the right-eye display and the left-eye display
Data Source
AI summary
A control device controls a display device so as to perform stereoscopic display in which a virtual object is disposed in a three-dimensional space, through right-eye display and left-eye display. The control device detects an object present in a field of vision of a user, in the three-dimensional space; detects a distance from the display device to the detected object; and controls the display device so as to perform the stereoscopic display, wherein a depth position of the virtual object is controlled by controlling a parallax of the virtual object between the right-eye display and the left-eye display, on a basis of a distance from the display device to a specific object that is present in a display direction of the virtual object, and that is an object closest to the display device.