Printed Sheet Inspection Region Selection by Object Overlap

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Solution Overview

Problem

Existing inspection systems for printed products rely heavily on operator skill and time-consuming manual settings, leading to inconsistent inspection accuracy and efficiency.

Innovation Solution

An information processing apparatus that automatically determines an inspection level for each object in a printed sheet by calculating the proportion of overlapping inspection regions based on user-defined settings, ensuring consistent and accurate defect detection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If manual inspection settings are used by operators, then inspection flexibility is maintained, but inspection time and effort increase significantly

Engineering Contradiction:
Improveinspection efficiencyVSAvoidsetting time
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The system automatically performs inspection region setting and determination without requiring manual operator intervention. The determination unit self-determines the appropriate inspection region based on overlapping region proportions, eliminating the need for operators to manually configure inspection parameters and significantly reducing setup time

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system pre-calculates and stores multiple candidate inspection regions with different levels of strictness before actual inspection begins. When inspection is needed, the system quickly selects from pre-prepared regions based on overlapping proportions rather than calculating from scratch, reducing real-time setup time

Inventive Principle:
Principle #10Preliminary action

2Measurement precision

If multiple inspection regions with different levels are set manually, then inspection accuracy can be optimized, but the complexity of setting increases

Engineering Contradiction:
Improveinspection accuracyVSAvoidsetting complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The determination unit acts as an intermediary between the user's inspection requirements and the multiple pre-set inspection regions. It automatically selects the appropriate inspection region by calculating overlapping proportions between candidate regions and the detected object, translating complex multi-region configuration into simple automated selection

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The system changes the parameter of inspection region selection based on the calculated proportion of overlapping regions. By dynamically adjusting which inspection region to apply (from multiple candidates with different strictness levels) based on quantitative proportion analysis, it optimizes inspection accuracy without requiring manual parameter tuning

Inventive Principle:
Principle #35Parameter changes

3Productivity

If automated inspection region determination is implemented, then inspection efficiency improves, but the ability to handle diverse inspection scenarios may be limited

Engineering Contradiction:
Improveinspection efficiencyVSAvoidinspection flexibility
Core Design Contradiction:
ProductivityVSAdaptability or versatility

Solution Approach 1:

The system dynamically adapts its inspection region selection based on the specific characteristics of each detected object. The determination unit calculates overlapping proportions in real-time and selects inspection regions accordingly, allowing the automated system to flexibly handle diverse inspection scenarios rather than applying a fixed inspection approach to all objects

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS20250245819A1Information processing apparatus, method of controlling information processing apparatus, and inspection system
Publication Date: 2025.07.31 CANON KK
  • US20250245819A1 patent drawing
  • US20250245819A1 patent drawing
  • US20250245819A1 patent drawing

AI summary

An information processing apparatus configured to perform setting to inspect a printed sheet includes: at least one memory that stores instructions; and at least one processor that executes the instructions to: set an inspection region for each inspection level indicating accuracy of the inspection based on a first user instruction for a reference image, which is a reference for the inspection; and extract an object existing in the reference image, in which in a case where a plurality of inspection regions which have the different inspection levels are set for the extracted object based on the first user instruction, one inspection region is determined from the plurality of the inspection regions based on a proportion of each of the plurality of the inspection regions included in the object, and the inspection level corresponding to the determined one inspection region is set as the inspection level for the object.