3D Scanner Data Extraction for High-Speed Point Cloud Measurement
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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 bandwidth limitations.
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 generate and process images, reducing data transmission by tying identification information to measurement information, allowing high-speed scanning without increasing hardware size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a three-dimensional scanner of a non-contact type is used to scan a wide range of the measurement target, then the measurement range is improved, but the data amount increases making it difficult to transmit at high frame rates
Solution Approach 1:
The patent extracts only the essential measurement information (coordinates and identification information) from the captured images, rather than transmitting the complete image data. This is achieved by having the three-dimensional scanner calculate measurement information from captured images and transmit only this processed data along with identification information, significantly reducing the data transmission load while maintaining measurement capabilities across a wide range.
Solution Approach 2:
The three-dimensional scanner performs preliminary processing of captured images to extract measurement information before transmission. The scanner calculates coordinates and generates measurement information from the captured images in advance, so that only the essential processed data needs to be transmitted to the information processing device, enabling high-speed scanning across wide areas.
2Measurement precision
If complete image data is transmitted from the three-dimensional scanner to the information processing device, then measurement accuracy is maintained, but transmission speed decreases due to large data amount
Solution Approach 1:
The system extracts only the necessary measurement information (coordinates, identification information) from complete image data at the scanner side. The three-dimensional scanner processes captured images to generate concise measurement information that maintains measurement accuracy while occupying minimal transmission bandwidth, enabling high-speed data transfer.
Solution Approach 2:
Instead of transmitting the original large-volume image data, the system transmits a compressed representation in the form of calculated measurement information and identification data. This copied form of data preserves the essential measurement content while dramatically reducing the data size for transmission.
3Reliability
If identification information is tied to measurement information, then data association accuracy is improved, but data processing complexity increases
Solution Approach 1:
Identification information serves as an intermediary that links captured images with their corresponding measurement information. Each image and its derived measurement data are tagged with matching identification information, enabling the information processing device to accurately associate measurements with their source images through this intermediate identifier, simplifying the association process.
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 and avoiding hardware size increases, while maintaining accurate three-dimensional shape measurement.
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 for measuring a position and a posture of the three-dimensional scanner
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.