3D Scanner Marker Synchronization for High-Speed Point Cloud Capture
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Solution Overview
Problem
Existing three-dimensional scanners face challenges in achieving high-speed scanning due to the large data amount of images acquired by non-contact scanners, which are difficult to transmit at high frame rates due to communication band restrictions.
Innovation Solution
A three-dimensional measurement device that includes a three-dimensional scanner with a scanner light source and self-luminous markers, synchronized with an imaging unit to capture and process images, reducing data transmission by tying identification information to measurement information, allowing high-frame-rate transmission without direct image data transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a non-contact three-dimensional scanner is used to scan a wide range, then the measurement range is improved, but the data transmission speed deteriorates due to large data amount
Solution Approach 1:
The patent extracts only the essential measurement information (edge data, marker positions, synchronization signals) from the complete image data, transmitting only these extracted features rather than the full high-resolution images. This reduces the data transmission load while preserving the core measurement capabilities across wide areas.
Solution Approach 2:
The patent uses marker copies (artificial markers placed on the measurement target) that can be captured by the imaging unit, allowing the system to track and measure positions without transmitting the entire scene image. The markers serve as simplified representations that convey position information efficiently.
2Productivity
If image data is transmitted at high frame rate, then the scanning speed is improved, but the communication bandwidth requirement increases
Solution Approach 1:
The system extracts only critical measurement data (edge information, marker coordinates, synchronization timestamps) from the captured images, transmitting these extracted features at high frame rates without sending the complete image data. This enables high-speed scanning while keeping communication bandwidth requirements manageable.
Solution Approach 2:
The patent changes the data representation from full image pixels to processed measurement parameters (edge data, marker positions, synchronization signals). This parameter transformation reduces data volume while maintaining the information needed for high-speed three-dimensional measurement.
3Measurement precision
If complete image data is transmitted, then the measurement accuracy is improved, but the transmission time increases
Solution Approach 1:
The patent extracts the essential measurement-critical information (edge data defining object boundaries, precise marker positions, synchronization timing) from the images and transmits only these extracted elements. This maintains measurement accuracy by preserving the most important geometric and positional information while dramatically reducing transmission time.
Solution Approach 2:
The system performs preliminary image processing (edge detection, marker recognition, data extraction) at the scanner side before transmission, preparing only the necessary measurement data for transfer. This preliminary processing ensures that the transmitted data is already optimized for measurement accuracy, eliminating the need to transmit raw complete images.
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
Enables high-speed scanning by reducing data transmission requirements, maintaining a balanced hardware size and power consumption, and achieving accurate point cloud generation.
Implementation Method 1
a scanner light source that emits pattern light
Implementation Method 2
a plurality of self-luminous markers; an imaging unit that captures the self-luminous markers
Data Source
AI summary
High-speed scanning is implemented by a three-dimensional scanner. A three-dimensional measurement device includes: a three-dimensional scanner including a scanner image processing unit that generates first measurement information by processing a first image including pattern light; an imaging unit including a camera image processing unit that generates second measurement information by processing a second image including a self-luminous marker provided in the three-dimensional scanner; and a three-dimensional data generation mechanism. The three-dimensional data generation mechanism receives the first measurement information and the second measurement information, and generates a point cloud indicating a three-dimensional shape of a measurement target based on the received first measurement information and second measurement information, and identification information.