Construction Management Device Stereo Measurement
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Solution Overview
Problem
Existing construction management systems lack the capability to accurately calculate the amount of work performed at any time or location based on images captured by imaging devices, as they struggle to compute three-dimensional data of landforms effectively.
Innovation Solution
A construction management device that utilizes multiple work machines equipped with imaging devices, storing camera parameters and selecting target image pairs to generate three-dimensional data of landforms using stereo measurement units, allowing for the calculation of work amounts at any time or location.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If three-dimensional data is computed using multiple image pairs from multiple work machines, then measurement precision and coverage are improved, but device complexity and data processing requirements increase
Solution Approach 1:
The system divides the construction site into multiple measurement zones, with each work machine responsible for capturing images of its local area. The construction management device separately processes image pairs from each work machine and then integrates the three-dimensional data, breaking down the complex task of site-wide measurement into manageable segments that can be processed independently and then combined.
Solution Approach 2:
The construction management device serves as an intermediary that receives image pairs from multiple work machines, manages the camera parameters of each imaging device, and performs stereo measurement to generate integrated three-dimensional data. This intermediary coordinates the data flow and processing between multiple independent work machines, simplifying the overall system architecture.
2Measurement precision
If camera parameters of multiple imaging devices are stored and managed, then measurement precision is improved, but data management complexity increases
Solution Approach 1:
The construction management device performs multiple functions: it stores camera parameters for all imaging devices, selects appropriate image pairs from multiple work machines, performs stereo measurement, and integrates three-dimensional data. This multi-functional approach consolidates what would otherwise require separate systems for each function, reducing overall management complexity.
Solution Approach 2:
Each work machine autonomously captures image pairs and transmits them to the construction management device along with its identification information. The construction management device automatically associates camera parameters with the corresponding work machine and image pairs, eliminating the need for manual parameter assignment and reducing information management overhead.
3Adaptability or versatility
If image pairs are selected from multiple work machines, then adaptability and measurement coverage are improved, but processing time and complexity increase
Solution Approach 1:
The system dynamically selects which image pairs to process based on the construction site conditions, work machine positions, and measurement requirements. The construction management device can adaptively choose images from different work machines depending on which areas need measurement, allowing flexible adjustment of processing scope and time investment based on actual needs.
Solution Approach 2:
The system processes only the necessary subset of image pairs required for the current measurement task rather than processing all available images. The construction management device selectively processes image pairs from work machines that are relevant to the current measurement objectives, avoiding unnecessary processing time while maintaining measurement completeness.
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 computation of three-dimensional data of landforms at any time point or location, facilitating accurate assessment of work progress and earthwork amounts through the integration of camera parameters and image processing.
Implementation Method 1
a stereo measurement unit that generates three-dimensional data representing a landform of a periphery of a work machine having captured the target image pair on the basis of the selected target image pair, by using a camera parameter related to the imaging device of the work machine having captured the selected target image pair
Data Source
AI summary
A selection unit selects a target image pair which is a processing target from among a plurality of image pairs captured by imaging devices provided in work machines. A stereo measurement unit generates three-dimensional data representing a landform on the basis of the selected target image pair, by using a camera parameter related to the imaging device of the work machine having imaged the selected target image pair.