Inspection Image Scaling for Clear Printed Defect Review
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Solution Overview
Problem
Existing image inspection systems fail to account for the overall size of the displayed image when setting enlarged displays, affecting the visibility of inspection results.
Innovation Solution
The system adjusts the enlargement rate of inspection images based on the size of the display region and user-defined settings, ensuring clear visibility of inspection results by applying appropriate magnification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the inspection image is displayed without enlargement, then the display region can accommodate larger images, but the visibility of small defects and inspection details deteriorates
Solution Approach 1:
The patent implements dynamic enlargement rate adjustment based on the display region size. The control unit calculates an appropriate enlargement rate by comparing the inspection image dimensions with the display region dimensions, enabling the system to adaptively optimize both visibility and display region utilization rather than using fixed enlargement
Solution Approach 2:
The system changes the enlargement rate parameter dynamically according to the display region size. By calculating the ratio between the inspection image size and display region size, the system adjusts the enlargement rate to ensure defect visibility while maximizing display region utilization
2Measurement precision
If a fixed enlargement rate is applied, then the visibility of defects is improved, but the adaptability to different image sizes and display regions deteriorates
Solution Approach 1:
The system transitions from fixed enlargement to dynamic enlargement rate adjustment. The control unit continuously adapts the enlargement rate based on the relationship between inspection image size and display region size, ensuring optimal defect visibility across varying image and display conditions
Solution Approach 2:
The enlargement rate parameter is changed dynamically based on image size and display region characteristics. The system calculates the appropriate enlargement rate by comparing image dimensions with display region dimensions, providing adaptability to different inspection scenarios
3Measurement precision
If the entire inspection image is enlarged to maximum size, then the visibility of inspection details is maximized, but the overall context and location information are lost
Solution Approach 1:
The patent segments the display into multiple regions: a main display region showing the entire inspection image at appropriate scale, and an enlarged display region showing defect areas at higher magnification. This segmentation allows simultaneous viewing of both overall context and detailed defect information
Solution Approach 2:
The system implements a nested display structure where an enlarged view of the defect area is embedded within the context of the overall inspection image. The enlarged region is positioned to maintain spatial relationship with the original image, allowing users to see both details and context simultaneously
Data Source
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AI summary
An inspection apparatus (50) obtains an inspection image generated by reading a sheet on which an image is formed, inspects the inspection image based on the reference image, computes a first scaling factor that is a scaling factor of the reference image in a case where an entirety of the reference image is displayed within a display region of a display device, and displays the reference image in the display region at a second scaling factor greater than the first scaling factor in a case where the first scaling factor is less than a first threshold.