Dynamic Resolution Image Inspection for Print Defect Storage
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Solution Overview
Problem
Conventional image inspection devices for printers lack the ability to dynamically change recording resolution based on inspection results, leading to inefficient storage of captured images, as they either lose fine print defect information at low resolution or require high-capacity storage and high-performance computers at high resolution.
Innovation Solution
An image inspection device with a saving processing unit that determines the recording resolution based on the inspection results, allowing for dynamic switching between high and low resolutions depending on the type and severity of print defects detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the recording resolution is set to a high resolution, then fine print defect information is preserved, but storage capacity and processing load increase
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the recording resolution based on the type of print defect detected. When fine defects like nozzle defects are detected, high resolution (e.g., 200 dpi) is used to preserve detail. For coarser defects, lower resolution (e.g., 75 dpi) suffices. This adaptive parameter adjustment resolves the contradiction by matching resolution to actual defect requirements rather than using a fixed high resolution for all cases.
Solution Approach 2:
The system implements dynamics by making the recording resolution flexible and changeable based on inspection results. The resolution is not fixed but dynamically selected from multiple levels (high, medium, low) according to the severity and type of defect detected. This dynamic adaptation allows the system to maintain high defect detection precision when needed while reducing storage capacity requirements when fine detail is not necessary.
2Measurement precision
If the recording resolution is set to a high resolution, then fine print defect information is preserved, but processing load and computer performance requirements increase
Solution Approach 1:
The patent changes the processing parameter (recording resolution) based on the inspection results. High resolution processing (e.g., 200 dpi) is applied only when fine defects requiring detailed analysis are detected. For other cases, lower resolution (e.g., 75 dpi) processing is used, significantly reducing the computational load and performance requirements while maintaining sufficient defect detection capability.
Solution Approach 2:
The system dynamically adjusts processing load by varying the recording resolution level. Instead of consistently applying high-resolution processing that demands high computer performance, the system adaptively selects processing intensity based on actual defect characteristics, thereby reducing overall processing requirements while preserving detection precision when necessary.
3Quantity of substance
If the recording resolution is set to a low resolution, then storage capacity and processing load are reduced, but fine print defect information is lost
Solution Approach 1:
The patent implements parameter changes by adjusting recording resolution based on defect type. Low resolution (e.g., 75 dpi) is used for storing images with coarse defects where fine detail is not critical, reducing storage capacity requirements. High resolution (e.g., 200 dpi) is applied when fine defects like individual nozzle failures are detected, ensuring detection precision is maintained when necessary.
Solution Approach 2:
The system dynamically selects recording resolution to balance storage efficiency and defect detection precision. Rather than using a fixed low resolution that would always lose fine detail, the system adaptively increases resolution when fine defects are detected, thereby maintaining measurement precision while optimizing storage capacity utilization based on actual image content requirements.
Data Source
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AI summary
An image inspection device (13) is provided with: an imaging unit (131) configured to capture a printed image; an inspection unit (133) configured to inspect a captured image obtained by capturing the printed image by the imaging unit (131); an image storage unit (135) configured to hold the captured image; and a saving processing unit (134) configured to record the captured image into the image storage unit (135). The saving processing unit (134) determines a recording resolution at a time of recording the captured image into the image storage unit (135), in accordance with a result of an inspection by the inspection unit (133).