Image Processing Apparatus Color Tone Consistency

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Solution Overview

Problem

When color environment settings in a printing system change, previously tested images may not reproduce the same color tone during retests due to changes in system correction values, requiring complex operations to revert to original settings.

Innovation Solution

A method that stores and retrieves information about the change in correction values, allowing the system to apply the previous test's color environment settings during retests, enabling operators to reproduce the original image without manually resetting the apparatus.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If color environment settings are changed in the system, then the system can adapt to new printing conditions, but previously tested images cannot reproduce the same color tone during retests

Engineering Contradiction:
Improveadaptability to color environment changesVSAvoidcolor tone consistency
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The system stores the color environment settings (step value and master balance adjustment value) that were active at the time of the previous test, before any changes occur. During retest, these previously stored settings are automatically retrieved and applied, ensuring that the color tone remains consistent with the original test even though the current system settings may have changed.

Inventive Principle:
Principle #10Preliminary action

2Productivity

If the same UI correction value is used at the time of first test and retest, then the operator can efficiently retest, but the actual correction value changes when color environment settings change

Engineering Contradiction:
Improveretest efficiencyVSAvoidcorrection value accuracy
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The system creates a copy of the color environment settings (step value and master balance adjustment value) from the previous test condition and applies this copied configuration during retest. This allows the operator to use the same UI correction value as before while the system internally applies the correct historical settings to maintain the original correction accuracy.

Inventive Principle:
Principle #26Copying

3Reliability

If operators manually reset color environment settings for retesting, then color tone consistency can be maintained, but complex operations are required

Engineering Contradiction:
Improvecolor tone consistencyVSAvoidoperation complexity
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The system automatically retrieves and applies the appropriate color environment settings from stored historical data without requiring operator intervention. The apparatus self-manages the restoration of previous test conditions, eliminating the need for operators to manually reset settings while maintaining color tone consistency.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS10044911B2Image processing apparatus, image processing method, and storage medium
Publication Date: 2018.08.07 CANON KK
  • US10044911B2 patent drawing
  • US10044911B2 patent drawing
  • US10044911B2 patent drawing

AI summary

An image processing apparatus according to an embodiment of the present invention performs a first correction for an image based on a correction value corresponding to a step designated by an operator among a plurality of steps corresponding to a plurality of correction values used for correcting the image. The image processing apparatus stores information used for specifying a change amount of a correction value corresponding to a change of one step of the plurality of steps in a memory. The change amount can be changed, and the change amount at the time of operator's designating the step is stored. The image processing apparatus performs a second correction for the image based on the change amount of the correction value corresponding to the change of the one step that is specified by the information stored in the memory.