Moving Body Position Determination Using 3D Light-Emitting Devices
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Solution Overview
Problem
Existing moving body position determination technologies are limited by the need for markers to be arranged on the same plane, restricting the degree of freedom in marker placement and position/orientation calculation.
Innovation Solution
A system that uses multiple light-emitting devices with known three-dimensional coordinates, where a camera attached to a moving body images these devices, and a server determines the moving body's position and orientation by calculating based on the image and three-dimensional positions of the markers, allowing for improved freedom in calculating position and orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If markers are arranged on the same plane, then the imaging device can accurately capture marker positions, but the degree of freedom in marker placement is reduced and position/orientation calculation is limited
Solution Approach 1:
The patent extends the marker arrangement from two-dimensional plane to three-dimensional space by allowing markers to be placed at different heights. This dimensional change enables the imaging device to capture spatial information that includes vertical positioning, thereby increasing the degree of freedom in marker placement while maintaining calculation accuracy through the use of multiple light-emitting devices distributed in three-dimensional space
2Ease of operation
If markers are arranged on the same plane, then the imaging process is simplified, but the calculation of position and orientation has limited freedom
Solution Approach 1:
The invention introduces vertical dimension to marker arrangement, transitioning from planar to spatial distribution. This allows markers to be positioned at different heights while still being captured by the imaging device, thereby simplifying the operational process of marker placement while significantly enhancing the adaptability and freedom in position and orientation calculations
Data Source
AI summary
A moving body position determination device includes a communicator, and at least one processor. The at least one processor is configured to acquire an image via the communicator, the image including at least two light-emitting devices of a plurality of light-emitting devices for which coordinate positions in three-dimensional space are known, the plurality of light-emitting devices including two light-emitting devices placed at desired positions at which heights in the three-dimensional space differ, the at least two light emitting devices being imaged by an imaging device attached to a moving body; acquire, on the basis of the acquired image, coordinate positions in the image of the at least two light-emitting devices; and determine, on the basis of the coordinate positions in the three-dimensional space and the coordinate positions in the image, at least one of a coordinate position of the moving body and an orientation the moving body is facing in the three-dimensional space.