3D Surveying Control Apparatus for Slope Orientation Adjustment
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Solution Overview
Problem
In three-dimensional surveying, slopes with varying ground altitudes reduce the area of the ground in captured images and the number of samples in the point cloud, leading to decreased accuracy.
Innovation Solution
A control apparatus that generates a three-dimensional point cloud by estimating the orientation of the ground based on captured images and adjusting the sensing direction accordingly to ensure accurate data collection on slopes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If imaging is performed in the vertical direction from the air, then the imaging process is simple and efficient, but the ground area in captured images is reduced and the number of samples in the point cloud decreases when surveying slopes
Solution Approach 1:
The imaging direction is dynamically adjusted based on the estimated ground orientation. The control apparatus changes the imaging direction from a fixed vertical direction to a direction that adapts to the slope orientation, allowing the imaging system to maintain optimal sampling density across varying terrain while preserving surveying efficiency
Solution Approach 2:
The imaging parameters, specifically the imaging direction, are changed based on the estimated ground orientation parameters. By modifying the imaging direction parameter to match the slope orientation, the system increases the number of samples captured on sloped surfaces while maintaining the overall efficiency of the surveying process
2Measurement precision
If the imaging direction is adjusted to match the ground orientation on slopes, then the number of samples in the point cloud increases, but the complexity of the sensing control increases
Solution Approach 1:
The system uses feedback from ground orientation estimation to control the imaging direction. The control apparatus continuously estimates the ground orientation from captured images and uses this feedback information to adjust the imaging direction, creating a closed-loop control system that improves surveying accuracy while managing complexity through automated feedback-based adjustment
Solution Approach 2:
The system performs self-adjustment by automatically estimating ground orientation and controlling the imaging direction without requiring external intervention. The control apparatus uses its own captured images to estimate terrain orientation and autonomously adjusts the imaging parameters, reducing the need for complex external control mechanisms
Data Source
AI summary
Accuracy of three-dimensional surveying is increased in a case where a zone to be surveyed includes a slope. A control apparatus according to the present technology includes a point cloud generation section that generates a three-dimensional point cloud indicating a three-dimensional structure of a target zone on the basis of sensing information obtained by sensing a ground side from the air, an estimation section that estimates an orientation of the ground on the basis of a captured image obtained by imaging the ground side from the air, and a control section that performs control related to sensing for generation of the three-dimensional point cloud of the target zone on the basis of information regarding the orientation of the ground estimated by the estimation section.