Marker-Tracked 3D Measurement for High-Speed Wireless Scanning
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Solution Overview
Problem
Existing three-dimensional scanners face challenges in transmitting large image data at high frame rates due to communication band restrictions, particularly in wireless communication, limiting the speed and convenience of wide-range scanning.
Innovation Solution
A three-dimensional measurement device that includes a three-dimensional scanner with a scanner light source, an imaging unit with a movable imaging part, and wireless communication units to transmit reduced data via self-luminous markers, enabling high-speed scanning while maintaining wireless convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If three-dimensional scanner transmits image data at high frame rate for high-speed scanning, then scanning speed is improved, but data transmission becomes difficult due to communication band restriction
Solution Approach 1:
The patent extracts only the essential information (marker positions and postures) from the full image data and transmits this reduced data set wirelessly. The imaging unit captures images of markers on the scanner, and the camera image processing unit extracts marker position and posture information, transmitting only this extracted data via wireless communication unit, thereby reducing data quantity while maintaining scanning functionality.
Solution Approach 2:
The patent uses marker images as a simplified representation (copy) of the scanner's state. Instead of transmitting the complete scanner image data, the system transmits extracted marker information which serves as a representative copy containing the essential positional and postural data needed for three-dimensional measurement.
2Ease of operation
If wireless communication is used for portability, then ease of operation is improved, but data transmission capability deteriorates due to communication band restriction
Solution Approach 1:
The patent extracts only the essential information (marker positions and postures) from the full image data and transmits this reduced data set wirelessly. The imaging unit captures images of markers on the scanner, and the camera image processing unit extracts marker position and posture information, transmitting only this extracted data via wireless communication unit, thereby reducing data quantity while maintaining scanning functionality.
Solution Approach 2:
The patent changes the data transmission parameter from transmitting complete image data to transmitting extracted marker information. This parameter change enables wireless communication to function effectively by reducing the data volume to a level compatible with wireless communication band restrictions while maintaining the necessary measurement capabilities.
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
The device achieves high-speed scanning by reducing data transmission through wireless communication of marker information, ensuring convenience and portability, even at distant locations from commercial power supplies.
Implementation Method 1
a scanner light source that emits pattern light
Implementation Method 2
a scanner imaging part that captures an image of the pattern light emitted by the scanner light source
Implementation Method 3
the markers are, for example, self-luminous markers, the markers emit light
Data Source
AI summary
High-speed scanning is implemented while securing convenience of wireless communication. A three-dimensional measurement device 1 includes: a three-dimensional scanner 2 that processes a first image including pattern light to generate first measurement information; an imaging unit 3 that moves a field of view to make the three-dimensional scanner 2 be within the field of view and includes a first wireless communication unit that transmits second measurement information generated by processing a second image including a marker of the three-dimensional scanner 2; and a three-dimensional data generation unit 4 that includes a second wireless communication unit configured to receive the second measurement information transmitted via the first wireless communication unit and generates a point cloud indicating a three-dimensional shape of a measurement target based on the first measurement information generated by the scanner image processing unit and the second measurement information received via the second wireless communication unit.