Colour Management System Profile Composition
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Solution Overview
Problem
Current colour management systems are complex and inconvenient for users, particularly in workflows involving multiple devices and media, as they require manual selection and understanding of profiles for accurate colour reproduction, leading to potential errors in emulating the colour behaviour of one device with another, especially in proofing processes.
Innovation Solution
A method that allows users to select a receiving medium from a list, obtaining and composing multiple profiles (colour profiles and device link profiles) to create a colour transform, enabling a standardised and simplified workflow for colour conversion, eliminating the need for separate device link profile selection and ensuring accurate colour reproduction across different output media.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If users manually select and compose colour profiles for colour conversion, then colour accuracy can be optimized, but the system complexity and user burden increase significantly
Solution Approach 1:
The system pre-composes device link profiles by combining colour profiles and device link profiles before the user needs them. When a user selects an output medium, the corresponding pre-composed device link profile is automatically applied, eliminating the need for users to manually compose profiles while maintaining colour accuracy.
Solution Approach 2:
The invention introduces an intermediary component (the colour management system) that automatically selects and composes appropriate profiles based on the selected output medium. This intermediary handles the complexity of profile composition, shielding users from the detailed technical processes while ensuring accurate colour reproduction.
2Measurement precision
If users manually compose device link profiles for accurate colour conversion, then colour reproduction accuracy improves, but the ease of operation deteriorates due to required technical knowledge
Solution Approach 1:
The system performs self-service by automatically selecting and composing the appropriate device link profile based on the selected output medium. The system retrieves the colour profile for the medium and combines it with the device link profile automatically, without requiring user intervention or technical knowledge of profile composition.
3Adaptability or versatility
If the system supports multiple profile composition options for different output media, then adaptability improves, but the device complexity increases due to multiple profile management requirements
Solution Approach 1:
The system implements a universal approach where a single output medium selection automatically triggers the appropriate profile composition and application. The colour management system is designed to handle multiple profile types (colour profiles and device link profiles) and automatically compose the correct combination based on the selected medium, providing adaptability without requiring users to manage multiple profiles directly.
Data Source
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AI summary
A method for controlling colour management for converting colours of a digital image for reproduction on a receiving medium in an output device, the receiving medium being selectable from a list of output media, the colours of the digital image being associated with an input colour space, the method comprising the steps of obtaining an input colour profile that characterises said input colour space, selecting an output medium from the list of output media, obtaining at least two profiles associated with the selected output medium, the profiles being taken from a set of colour profiles and device link profiles, and composing a colour transform for the conversion of colours of the digital image as input data using the input colour profile and the at least two associated profiles. This method provides a convenient way to apply a device link profile for an output device in dependence of the receiving medium by additionaly associating a colour profile for the device colour space that is the input colour space of the device link profile. Furthermore the method enables an emulation of the colours of a second device on said output device by the mere selection of an output medium. Therefor, in addition to a colour profile for said output medium on said output device, a colour profile for said second device is associated to said selected output medium. This second device colour profile is applied twice in the colour transform, once in a reverse direction from the other, thereby limiting the available colour space to the gamut of the second device. A printing system comprising a controller that is configured to apply this method is more flexible and easy to use for users unacquainted with the intricacies of colour management.