Single-Camera Shape Measurement With Segmented Line-Light Regions
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Solution Overview
Problem
Existing shape measuring devices with two image capturing units are costly, require increased image data processing, and complex synchronous control, leading to high computational load.
Innovation Solution
A shape measuring device with a single image capturing unit that uses two sets of line lights and measurement regions, allowing for extended measurement range and accurate shape calculation without the need for synchronous control, thereby reducing computational load and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If two image capturing units are used to extend measurement range, then measurement range is improved, but device cost and complexity increase
Solution Approach 1:
The measurement space is segmented into multiple measurement regions, each illuminated by separately controllable line lights. The single image capturing unit sequentially captures images from different regions by controlling the timing of line light radiation, thereby extending measurement range without adding hardware complexity
Solution Approach 2:
The system dynamically switches between different line lights to illuminate different measurement regions at different time points. This temporal dynamic control allows a single image capturing unit to effectively measure multiple regions that would otherwise require multiple simultaneous cameras
2Length of stationary object
If two image capturing units are used to extend measurement range, then measurement range is improved, but computational load increases
Solution Approach 1:
The measurement process is segmented into multiple time points, with each time point capturing a specific measurement region illuminated by a specific line light. This temporal segmentation reduces the total image data volume compared to simultaneous multi-camera capture, thereby reducing computational load for processing
3Length of stationary object
If two image capturing units are used to extend measurement range, then measurement range is improved, but device cost increases
Solution Approach 1:
A single image capturing unit is designed to perform multiple functions by capturing images from different measurement regions at different time points. This multi-functional design eliminates the need for multiple expensive camera units while achieving the same extended measurement range
Solution Approach 2:
The patent merges the functions of multiple image capturing units into a single unit by combining temporal sequencing with spatial measurement. The single camera unit captures data from multiple regions sequentially, consolidating hardware resources while maintaining measurement capabilities
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
The device achieves high-accuracy shape measurement with extended range at a lower cost by using a single image capturing unit and multiple measurement regions, reducing computational load and simplifying the device configuration.
Implementation Method 1
a light radiating unit, to radiate first line light and second line light
Implementation Method 2
the image of the line light projected on the object is captured by the image capturing unit
Data Source
AI summary
A shape measuring device includes: a first light radiating unit to radiate first line light and second line light; a first image capturing unit to capture an object; and a measuring unit to measure a shape of the object on a basis of a first image and second images.