Structure Member Specification via Coordinate Transformation
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Solution Overview
Problem
Existing methods for specifying structural members in infrastructure inspections, such as bridges, face challenges in accurately identifying members within captured images without requiring additional markers or complex setups, leading to inefficient record-keeping and difficulty in distinguishing damaged members.
Innovation Solution
A structure member specification device and method that includes an imaging device, a first space information acquisition unit, a transformation unit, a member table, and a member identification information acquisition unit, which captures and transforms local coordinate system data into global coordinates, allowing for accurate identification of members using pre-registered space information and identification data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If two-dimensional codes are attached to boards for member identification, then member identification accuracy is improved, but inspection complexity and time consumption increase
Solution Approach 1:
The patent pre-registers three-dimensional space information and member identification information for all structure members before inspection. During inspection, the imaging device directly captures members and the system automatically matches captured images with pre-registered data, eliminating the need for on-site code scanning and board preparation.
Solution Approach 2:
The patent extracts and removes the unnecessary two-dimensional code boards from the inspection process. Instead of requiring physical codes to be attached and scanned, the system uses direct image capture and automatic recognition of member features, simplifying the inspection workflow.
2Measurement precision
If two-dimensional code boards are prepared and captured, then member identification accuracy is improved, but ease of operation deteriorates
Solution Approach 1:
The system performs automatic member identification through image capture and automated matching with pre-registered three-dimensional space information. The inspection process becomes self-service as the system automatically completes identification without requiring inspectors to manually prepare or scan code boards.
Solution Approach 2:
The patent replaces the mechanical process of attaching and scanning physical two-dimensional code boards with an automated digital system that uses three-dimensional space information and image recognition algorithms to identify members automatically.
3Measurement precision
If three-dimensional space information and member identification information are pre-registered, then member specification accuracy is improved, but device complexity increases
Solution Approach 1:
The patent creates a universal database structure that stores both three-dimensional space information and member identification information together. This multi-functional database serves multiple purposes: spatial positioning, member identification, and inspection record-keeping, reducing the need for separate systems.
Solution Approach 2:
The pre-registered three-dimensional space information acts as an intermediary that bridges the captured images and member identification. The system matches captured member positions with pre-registered spatial data to automatically retrieve identification information, simplifying the matching process.
Data Source
AI summary
The present invention provides a structure member specification device and a structure member specification method capable of easily and accurately acquiring member identification information indicating a member included in an image of a structure captured by an imaging device when the structure is inspected. The structure member specification device acquires first space information on the structure in a local coordinate system image captured by an imaging device, and transforms the acquired first space information into second space information in a global coordinate system; prepares a member table in which third space information on each member that constitutes the structure in the global coordinate system and member identification information indicating each member are registered in an associated manner; specifies, on the basis of the transformed second space information and the third space information registered in the member table, the third space information corresponding to the second space information; and acquires member identification information corresponding to the specified third space information.