Eyewear Display System for Point Cloud Density Verification
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Solution Overview
Problem
In point cloud data observation using a ground-mounted scanner, it is difficult to determine if the desired point cloud density has been achieved across the entire observation region without converting data into an absolute coordinate system and displaying it, leading to challenges in setting the next instrument point to prevent insufficient data and overlapping.
Innovation Solution
An eyewear display system that includes a scanner, an eyewear device, and a data processing unit, which synchronizes coordinate spaces and allows for real-time prediction and display of point cloud data acquisition states, enabling the visualization of point cloud density and prediction of data to be acquired at potential instrument points on the eyewear device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple scanner installation points are set to secure point cloud density, then point cloud density is improved, but device complexity and measurement time increase
Solution Approach 1:
The system performs preliminary actions by predicting the point cloud data acquisition state before actual measurement. The eyewear device displays predicted point cloud density and coverage areas, allowing operators to plan scanner installation points in advance and avoid insufficient data collection, thereby reducing the number of required installation points while maintaining measurement precision.
Solution Approach 2:
The system implements feedback by displaying the actual point cloud data acquisition state in real-time on the eyewear device. This allows operators to immediately see whether desired density has been achieved and adjust the measurement plan accordingly, preventing unnecessary additional installation points and reducing overall system complexity.
2Measurement precision
If data is converted to absolute coordinate system and displayed for verification, then measurement precision is improved, but loss of time occurs due to post-processing requirements
Solution Approach 1:
The eyewear device acts as an intermediary that displays point cloud data in a visual format directly at the measurement site. This eliminates the need to convert data to absolute coordinate systems and transport it to an office for verification. The real-time visual feedback on the eyewear device provides immediate confirmation of measurement quality, saving significant post-processing time.
3Productivity
If scanner rotation speed is increased to improve productivity, then productivity is improved, but point cloud density deteriorates
Solution Approach 1:
The system predicts point cloud data acquisition states at different rotation speeds before actual measurement. By displaying these predictions on the eyewear device, operators can determine the optimal rotation speed in advance that balances productivity and point cloud density requirements, avoiding the need to use excessively high rotation speeds that would compromise data quality.
Solution Approach 2:
The real-time display of point cloud density on the eyewear device provides feedback that allows operators to adjust scanner rotation speed during measurement. This dynamic adjustment ensures that productivity is maximized while maintaining adequate point cloud density, resolving the contradiction between speed and quality.
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 the efficient setting of next instrument points while confirming point cloud data acquisition states at the survey site, preventing remeasurement and ensuring adequate data coverage by visually displaying predicted data acquisition regions.
Implementation Method 1
a measuring unit configured to irradiate distance-measuring light, and acquire three-dimensional coordinates of an irradiation point by measuring a distance and an angle to the irradiation point
Implementation Method 2
a relative position detection sensor configured to detect a position of the device
Implementation Method 3
a relative direction detection sensor configured to detect a direction that the device faces
Data Source
AI summary
Provided is an eyewear display system includes: a scanner including a measuring unit configured to acquire three-dimensional coordinates, a point cloud data acquiring unit configured to acquire point cloud data, and a communication unit; an eyewear device including a display, a relative position detection sensor, a relative direction detection sensor, and a communication unit; a storage device including CAD design data of an observation site; and a data processing device configured to synchronize a coordinate space of the scanner, a coordinate space of the eyewear device, and a coordinate space of the CAD design data, and convert observation data OD and/or observation data prediction PD into data in the coordinate space of the CAD design data, such that the eyewear device displays the observation data OD or observation data prediction PD on the display by superimposing the observation data OD or observation data prediction PD on an actual landscape.