Image Measurement Setup Using Drawing-to-Image Matching
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Solution Overview
Problem
Existing image measurement apparatuses require users to have specialized knowledge of CAD and measuring instruments to set inspection measurement items, as they need to manually associate captured images with measurement elements and adjust conditions, leading to the generation of unnecessary measurement items and elements.
Innovation Solution
An image measurement apparatus and a setting support device that include a translucent plate, transmitted and epi-illumination sections, an imaging section, and a control unit to automatically match workpiece shapes with drawing data, allowing users to easily create measurement programs without specialized knowledge by automatically positioning, designating measurement elements, and adjusting imaging and illumination settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If users manually associate captured images with measurement elements and adjust conditions, then measurement precision can be maintained, but the ease of operation deteriorates due to requiring specialized knowledge of CAD and measuring instruments
Solution Approach 1:
The system performs automatic measurement item setting by itself without requiring user intervention. The control unit automatically associates captured images with measurement elements and adjusts imaging/illumination conditions based on drawing data, eliminating the need for users to have specialized knowledge while maintaining measurement precision through automated algorithms
Solution Approach 2:
The manual mechanical process of associating images with measurement elements and adjusting conditions is replaced by an automated control system that uses image processing and pattern recognition algorithms to automatically perform these tasks, substituting human expertise with computational intelligence
2Ease of operation
If measurement items and measurement elements are collectively generated on the basis of a predetermined rule, then the ease of operation is improved, but the reliability deteriorates due to generation of unnecessary measurement items and elements
Solution Approach 1:
Instead of applying a uniform predetermined rule to all measurement tasks, the system adapts the measurement item setting to the specific local characteristics of each workpiece and drawing. The control unit analyzes the specific features, dimensions, and requirements of each case to generate only the necessary measurement items, ensuring both ease of operation and reliability
Solution Approach 2:
The system uses feedback from the image analysis and drawing data to dynamically adjust which measurement items are generated. By continuously analyzing the workpiece features and comparing with drawing requirements, the system selectively creates only relevant measurement items, avoiding unnecessary ones while maintaining ease of automated operation
3Measurement precision
If users manually create measurement programs by adjusting observation conditions and associating images with measurement elements, then the measurement precision is maintained, but the productivity deteriorates due to time-consuming manual operations
Solution Approach 1:
The system performs preliminary automatic analysis of drawing data and workpiece images before measurement execution. The control unit pre-associates measurement elements with corresponding image regions and pre-adjusts imaging and illumination conditions based on the analyzed features, so that measurement can be executed immediately without time-consuming manual setup while maintaining precision
Solution Approach 2:
The manual process of creating measurement programs is replaced by automated control unit operations that use image processing, pattern recognition, and algorithmic decision-making to rapidly generate measurement programs, substituting slow manual operations with fast computational processes
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 users to perform desired measurements effortlessly by automatically matching workpiece representations with drawing data and adjusting measurement conditions, reducing the need for specialized knowledge in CAD or measuring instruments.
Implementation Method 1
a transmitted illumination section that is provided below the translucent plate and irradiates the workpiece mounted on the translucent plate with transmitted illumination light
Implementation Method 2
an epi-illumination section that is provided above the translucent plate and irradiates the workpiece mounted on the translucent plate with epi-illumination light
Data Source
AI summary
An image measurement apparatus includes an epi-illumination section and a transmitted illumination section, a drawing reception section that receives drawing data, a matching section that matches a workpiece shape included in the drawing data received by the drawing reception section with a workpiece representation included in an image generated by the imaging section, a measurement setting section that receives an instruction of a measurement position or a measurement item in the workpiece shape and reflects the measurement position or the measurement item as a measurement position or a measurement item for the workpiece representation after the workpiece shape included in the drawing data and the workpiece representation included in the image are matched by the matching section, and an automatic adjustment section that automatically adjusts, for every measurement element, a measurement condition for extracting each measurement element corresponding to each measurement position or measurement item.