AR Display System Coordinate Conversion for Position Alignment
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Solution Overview
Problem
Existing display systems struggle to accurately show a designated position in a virtual three-dimensional space to another user, particularly in Augmented Reality (AR) applications, where the intended overlap with real space scenery is often mismatched due to differences in viewer position or direction.
Innovation Solution
A display system comprising a first and second display apparatus that communicate to ensure the designated position is correctly overlapped with external scenery, with the second apparatus displaying AR content based on received output information and its own position or visual field, allowing for synchronized and intention-aligned image display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a designation image is generated based on a designated direction in a designated coordinate system, then the designation image can be generated as intended by the user, but the designation image may be viewed in a state different from the user's intention depending on the position or direction of another user viewing the designation image
Solution Approach 1:
The patent introduces a coordinate conversion mechanism that acts as an intermediary between the designator's coordinate system and the viewer's coordinate system. The management terminal receives the designation from the first terminal, converts it to the appropriate coordinate system based on the second terminal's position and orientation, and transmits the converted designation information. This intermediary conversion process ensures that the designation image is accurately displayed from the viewer's perspective while maintaining the original user's intention.
Solution Approach 2:
The patent dynamically changes coordinate system parameters (such as origin position, axis orientation, and scale) based on the viewer's position and direction. When a user views the designation image from a different location or angle, the system automatically adjusts the coordinate parameters to ensure the designation image aligns correctly with the external scenery from that specific viewpoint, thereby maintaining both accuracy and adaptability.
2Ease of manufacture
If AR content is displayed combining with external scenery, then the AR image can be overlapped with real space scenery, but it is not easy to match a state in which the designation image overlaps external scenery with the user's intention
Solution Approach 1:
The patent implements a feedback mechanism where the system continuously monitors the viewer's position, direction, and the relative position of external scenery. Based on this feedback information, the management terminal dynamically adjusts the coordinate system parameters and transforms the designation image to maintain proper alignment with the external scenery. This closed-loop control ensures that the AR content remains accurately overlaid on the real space scenery regardless of changes in viewing conditions.
Data Source
AI summary
A guidance system includes first and second HMDs. The first HMD includes a first image display section, and a reception section receiving an instruction, and a first control section generating output information in response to an instruction received by the reception section and transmitting the output information to the second HMD. The second HMD includes a second image display section displaying an image to be visually recognized in an overlapping manner with external scenery, a second storage section storing AR content including an AR image combined with external scenery visually recognized in the second display section, and a second control section displaying an image based on at least one of the AR content stored in the second storage section and the output information on the second display section according to a position of the second HMD or a visual field of external scenery visually recognized in the second display section.