Reference Image Inspection Control for Parallel Print Checking
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Solution Overview
Problem
Existing image inspection systems require significant time for processing from generating a reference image to performing image inspection, and are prone to abnormal states that can hinder the inspection process.
Innovation Solution
An image inspection system that generates a reference image and inspects an inspection image in parallel, with a hardware processor controlling inspections based on predetermined states to prevent execution during abnormal reference image generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If reference image generation and inspection image inspection are performed sequentially, then the inspection process is simple and reliable, but the processing time is excessively long
Solution Approach 1:
The system performs preliminary generation of the reference image before the inspection image is actually inspected. The reference image is generated in advance based on print data, so when inspection is needed, the reference image is already ready, eliminating the sequential waiting time while maintaining inspection reliability
Solution Approach 2:
The system enables continuous parallel execution of reference image generation and inspection image inspection processes. While the reference image is being generated, the inspection image can be read and prepared, allowing both processes to overlap and complete simultaneously, thus reducing total processing time without compromising inspection quality
2Loss of time
If reference image generation and inspection image inspection are performed in parallel, then processing time is reduced, but abnormal states during reference image generation can lead to incorrect inspections
Solution Approach 1:
The system introduces a feedback mechanism where the inspection process monitors the generation status of the reference image. When an abnormal state is detected during reference image generation, the feedback signal prevents the inspection from proceeding, ensuring that inspections are only performed when the reference image is properly ready, thus maintaining reliability while allowing parallel processing
Solution Approach 2:
The system dynamically adjusts the inspection execution based on the real-time generation status of the reference image. The inspection process can start, pause, or cancel depending on whether the reference image generation completes successfully, allowing flexible adaptation to abnormal states while maintaining the benefits of parallel processing
3Measurement precision
If user inspection is required to generate reference image, then inspection accuracy is ensured, but operational complexity and time requirement increase
Solution Approach 1:
The system implements self-service by automatically generating the reference image from print data without requiring manual user inspection. The reference image is created programmatically based on the original print job parameters, ensuring consistency and accuracy while eliminating the need for user involvement in the reference image creation process
Solution Approach 2:
The system creates a digital copy of the print data as the reference image, which can be directly used for comparison during inspection. This digital copying process automatically preserves the original print specifications without requiring manual copying or user verification, simplifying operations while maintaining accuracy
Data Source
AI summary
An image inspection system includes a hardware processor that generates a reference image to be used for inspecting an image formed on a recording medium and performs inspection of an inspection target image generated by reading the image formed on the recording medium on the basis of the reference image. The hardware processor controls not to perform the inspection on the basis of a predetermined state occurring in a process of generating the reference image.