Board Image Processing Device Fiducial Mark Detection
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Solution Overview
Problem
Existing image processing devices for component mounting machines face accuracy issues when manually setting the reference position of a board, as visual measurement can introduce errors, necessitating a method for more precise recognition of the reference position.
Innovation Solution
The image processing device employs a first template to detect a fiducial mark on the board and, if detection fails, uses a second template showing distinctive board features within the same region to complement the detection process, allowing for higher accuracy in recognizing the reference position, with the operator manually aligning the second template with the image data for improved accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual operation is used to set the reference position, then the device can operate without complex detection systems, but the measurement precision deteriorates due to visual measurement errors
Solution Approach 1:
The system performs self-detection of the fiducial mark position using automated image processing and template matching, eliminating the need for manual operator intervention. The detection unit automatically scans image data, compares it with templates, and identifies the reference position, allowing the system to serve itself rather than relying on human operators.
Solution Approach 2:
The patent replaces manual visual measurement with an automated image processing system that uses digital image data, template matching algorithms, and coordinate calculation. This substitutes the mechanical human visual system with an electronic detection and processing system that provides higher precision.
2Device complexity
If a single template detection method is used, then the device complexity is reduced, but the reliability deteriorates when the fiducial mark cannot be detected
Solution Approach 1:
The system dynamically switches between different detection approaches based on detection success. It first attempts automatic detection using template matching, and only when that fails does it transition to manual operator input mode. This dynamic adaptation ensures reliability while maintaining simplicity for successful cases.
Solution Approach 2:
The system prepares a backup manual detection method in advance to cushion against the failure of automatic detection. By having the manual input option ready beforehand, the system ensures that detection failure does not lead to complete system failure, thereby maintaining reliability.
3Productivity
If manual setting of reference position is used, then the processing time is reduced, but the manufacturing precision deteriorates due to visual measurement errors
Solution Approach 1:
The patent replaces manual visual measurement with automated image processing that captures board images, processes them through template matching algorithms, and calculates precise coordinates. This substitution maintains high productivity while achieving superior mounting precision through digital rather than human measurement.
Data Source
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AI summary
It is an object of the present invention to provide an image processing device and an image processing method for a board capable of recognizing a reference position of the board with higher accuracy. The image processing device for a board includes a template acquisition unit that acquires a second template that shows a distinctive portion of the board located outside the fiducial mark in a first region when the position of the fiducial mark is not detected by scanning with a detection unit, and a position recognition unit that recognizes the reference position of the board using the second template.