AR Object Display Using Local and World Coordinate Switching
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Solution Overview
Problem
Conventional virtual object display systems using local and world coordinate systems face limitations in placing a large number of objects and maintaining visibility of the outside world, as they require scrolling or obstruct the user's view when enlarging objects beyond the display area.
Innovation Solution
A mobile information terminal that utilizes a local and non-local coordinate system to place enlarged display objects, allowing them to extend beyond the display area by switching to a non-local system such as the world coordinate system, and includes features for avoidance and transparency adjustments to maintain visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a virtual object is placed on the local coordinate system to enable constant display, then the virtual object can be constantly shown and operated, but the number of virtual objects that can be placed is limited and the display area is restricted
Solution Approach 1:
The patent merges the local coordinate system and world coordinate system into a unified display management framework. The processor determines whether to display an enlarged virtual object on the local coordinate system or world coordinate system based on the object's size requirements, combining the advantages of both systems: the local system provides constant display and ease of operation, while the world system provides unlimited placement capacity and large display area.
2Adaptability or versatility
If a virtual object is placed on the world coordinate system to allow large number of objects, then the number of virtual objects to be placed increases, but the virtual object cannot be seen from a user when he or she moves away from the place
Solution Approach 1:
The patent implements a dynamic coordinate system selection mechanism where the processor evaluates the size requirements of each virtual object and dynamically determines whether to place it on the local coordinate system or world coordinate system. This dynamic approach ensures that virtual objects remain visible and accessible regardless of user movement, while still allowing a large number of objects to be placed in the environment.
3Area of stationary object
If the display area is enlarged to show a large virtual object, then the virtual object can be fully displayed, but the visibility of the outside world is reduced
Solution Approach 1:
The patent segments the display space into two coordinate systems with different purposes: the local coordinate system handles virtual objects that need to be constantly visible and operated, while the world coordinate system handles virtual objects requiring large display area. This segmentation allows the system to optimize display area allocation without compromising the visibility of the outside world, as each coordinate system manages objects appropriate to its characteristics.
Data Source
AI summary
A mobile information terminal comprises a display and a processor configured to carry out display control of the display, and the processor calculates coordinates on which the display object is to be displayed, using, as a coordinate system for displaying the display object, a local coordinate system that is fixed to the mobile information terminal and at least one non-local coordinate system that is not fixed to the mobile information terminal, and upon displaying an enlarged area display object, which is an object relating to the display object that is being displayed on the local coordinate system and requires, for displaying thereof, an enlarged area extending beyond a display area within the display, places the enlarged area display object on the non-local coordinate system.