Dimension Measurement Device for Accurate 3D Drawings
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing three-dimensional measurement techniques fail to provide accurate dimensional drawings of objects, particularly for estimating material requirements in maintenance and repair tasks, as they only divide surfaces based on boundaries without considering attached objects or complex shapes.
Innovation Solution
A dimension measurement device that includes an obtainer for three-dimensional coordinates, a surface extractor to determine focused surfaces, a region extractor to identify edges of attached objects, and a dimension generator to create accurate dimensional drawings by combining boundary and edge data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If surfaces are divided only based on boundaries in three-dimensional measurement, then the measurement process is simple, but the accuracy of dimensional drawings and material estimation is insufficient
Solution Approach 1:
The patent segments the object model into multiple levels: surfaces, boundaries, and attached objects. The region extractor specifically identifies attached objects on surfaces by analyzing depth information and spatial relationships, separating them from the base surface structure. This multi-level segmentation enables accurate dimensional drawings by capturing both surface boundaries and attached object regions, resolving the contradiction between measurement simplicity and accuracy.
2Measurement precision
If the measurement technique only creates basic three-dimensional models with surface boundaries, then the processing time is short, but the model is not useful for accurate material estimation
Solution Approach 1:
The patent performs preliminary extraction of attached object regions during the three-dimensional measurement process itself. By integrating the region extractor into the measurement workflow, the system identifies and marks attached objects on surfaces before final dimensional drawing creation. This preliminary action ensures that material estimation data is already prepared and structured, eliminating the need for separate analysis steps and reducing overall processing time while improving estimation accuracy.
3Measurement precision
If non-surface regions are excluded from measurement data, then the surface extraction is simpler, but attached objects on surfaces cannot be accurately identified
Solution Approach 1:
The patent applies local quality analysis by examining specific regions on surfaces to identify attached objects. The region extractor analyzes local depth variations, normal vector changes, and spatial relationships at specific surface locations to detect attached objects. This localized analysis approach maintains simplicity in overall processing while achieving high accuracy in identifying attached objects, as it only applies complex analysis where needed rather than to the entire model.
Data Source
AI summary
The dimension measurement device of one aspect of the present invention includes: an obtainer configured to obtain, from a measurement device for performing three dimensional measurement of a desired object, a set of coordinates in three dimensions of the desired object; a surface extractor configured to determine a focused surface constituting the desired object based on the set of coordinates, and extract a position of a boundary of the focused surface; a region extractor configured to extract, in relation to a candidate region corresponding to an object being a specific object attached to the focused surface, a position of an edge surrounding the candidate region; and a dimension generator configured to generate dimensional data necessary for creating a dimensional drawing of the desired object from the position of the boundary and the position of the edge.