Cable Owner Identification from 3D Point Cloud Data
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Solution Overview
Problem
Existing techniques for generating off-site equipment models from mobile mapping system data cannot automatically determine the owners of cables stretched between utility poles, leading to inadequate line diagrams that fail to identify utility pole deterioration factors.
Innovation Solution
A method that determines cable owners by analyzing the vertical relationship between cables and supporting structures, using a line diagram creation device and method that link owner information to cable models based on positional relationships, allowing for the creation of distinguishable line diagrams indicating cable ownership.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If cable models are extracted from three-dimensional point group data, then the line diagram can be automatically generated, but the owner information of cables cannot be determined
Solution Approach 1:
The patent utilizes the vertical dimension (height information) from three-dimensional point group data to determine cable owner information. By analyzing the height at which cables are stretched between utility poles and comparing it with predetermined height ranges for different owners, the system extracts owner information that was previously unavailable in two-dimensional line diagrams, thus resolving the information loss while maintaining automated generation efficiency
Solution Approach 2:
The patent introduces a determination table as an intermediary that stores the correspondence between cable height ranges and owner information. This intermediary structure enables the automatic linking of owner information to cable models by serving as a reference medium between the extracted cable height data and the owner identification process, thereby recovering lost information without compromising automation
2Adaptability or versatility
If multiple cables of different owners are stretched between common utility poles, then cable identification becomes complex, but automatic owner determination is not possible
Solution Approach 1:
The patent applies local quality by assigning different height ranges to different cable owners based on their specific characteristics and installation standards. Each owner's cables are identified by their unique vertical position characteristics rather than requiring complex global analysis, enabling simple automated determination even when multiple owners share common utility poles
Solution Approach 2:
The patent transforms the complex problem of identifying multiple cable owners into a simple parameter comparison task by using cable height as the key distinguishing parameter. By changing from complex multi-attribute identification to single-parameter (height) comparison against predetermined ranges, the system achieves automatic owner determination without increasing process complexity
Data Source
AI summary
The purpose of the present disclosure is to make it possible to determine owners of cables from a positional relationship between the cables in an off-site equipment model acquired through a mobile mapping system (MMS). The present disclosure acquires cable models serving as solid models of cables extracted from three-dimensional point group data (S11), identifies a positional relationship of the cables from the cable models and determines owners of the cables from the positional relationship in accordance with a determination table defining a vertical relationship of the cables (S22), links information of the owners determined to the solid models, and creates a line diagram by using the cable models to which the information of the owners is linked.