Print Image Color Conversion Across Media and Viewing Conditions
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Solution Overview
Problem
Existing image processing methods require complex labor and time to reproduce the appearance of an image on a reproduction print medium on an indication print medium, especially when dealing with various materials and observation environments, necessitating multiple color profiles and manual management.
Innovation Solution
An image processing device and program that utilize conversion tables and white point conversion to transform image data from a first color space to a second color space, allowing image reproduction on a different print medium, accounting for base color and observation environment, without the need for repeated profile creation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple color profiles are created for different observation environments and reproduction print media, then image appearance reproduction accuracy is improved, but device complexity and operational complexity increase
Solution Approach 1:
The patent creates a universal color profile that works across multiple observation environments and reproduction print media types. Instead of creating separate profiles for each combination of media and lighting conditions, a single profile is designed to handle diverse scenarios including fluorescent-coated fabrics, synthetic resin films, and various paper types under different light sources, thereby reducing profile management complexity while maintaining reproduction accuracy
Solution Approach 2:
The patent adjusts colorimetric parameters within the single color profile to account for variations in observation environments and print media characteristics. By incorporating adaptive parameter adjustments for different lighting conditions (including fluorescent lighting) and media types into the profile structure, the system maintains high reproduction accuracy without requiring multiple separate profiles
2Measurement precision
If multiple color profiles are created for different observation environments, then image appearance reproduction accuracy is improved, but time consumption and operational effort increase
Solution Approach 1:
The single color profile is designed to be universally applicable across multiple observation environments and reproduction print media types, eliminating the need to create and manage multiple profiles for different scenarios. This reduces the time and operational effort required for profile management while maintaining accurate image appearance reproduction
Solution Approach 2:
The color profile is pre-configured with adaptive capabilities for various observation environments and print media types. By preparing the profile in advance with built-in adjustments for different lighting conditions and media characteristics, the system eliminates the need for time-consuming profile creation and selection processes during actual image reproduction tasks
Data Source
AI summary
A print image is acquired as first image data represented in a first color space used for forming an image on a first print medium. Second image data is acquired by performing, on the first image data, conversion into representation in a profile connection space using a first conversion table and white point conversion using the information on appearance in a redetermined observation environment, of a base color section where an image is not formed on the first print medium. The second image data is converted by using a second conversion table into converted image data represented in a second color space used for forming an image on a second print medium and an image corresponding to the print image is formed on the second print medium by using the converted image data.