Fluorescent Color Dot Percentage Calculation for Image Data Generation
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Solution Overview
Problem
The use of fluorescent color materials in image processing systems poses challenges in expanding color reproduction range and hue improvement, particularly due to difficulties in defining color values and establishing color conversion algorithms, especially when replacing traditional process colors like CMYK with CMYK+NM, which requires manual skill and lacks efficient automated methods for generating image data.
Innovation Solution
An image processing apparatus with an acquisition unit, setting unit, and calculation unit that acquires and sets dot percentages for fluorescent colors, allowing for the generation of a profile to convert color values into dot percentages of process and fluorescent colors, enabling easy decomposition of image data into five plates and facilitating color designation for fluorescent toner inclusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If fluorescent color materials are used to expand color reproduction range and improve hues, then color brightness and saturation are enhanced, but it becomes difficult to define color values and establish color conversion algorithms
Solution Approach 1:
The patent introduces an intermediary color space (device-independent color space) as a mediator between the input color data and the fluorescent color output. This intermediary space provides a standardized reference framework that enables precise color value definition and conversion algorithm establishment for fluorescent colors, resolving the measurement precision problem while maintaining color brightness enhancement
2Illumination intensity
If fluorescent color materials are used to improve color reproduction, then hue saturation is enhanced, but the complexity of image data generation and plate decomposition increases due to lack of automated methods
Solution Approach 1:
The patent changes the parameters of the color conversion system by introducing fluorescent color parameters (dot percentages for fluorescent colors) alongside traditional process colors. This parameter expansion enables automated image data generation and plate decomposition by providing a complete mathematical framework for converting standard color data into fluorescent color output, reducing operational complexity while maintaining enhanced color saturation
3Adaptability or versatility
If traditional CMYK process colors are replaced with CMYK+NM fluorescent colors, then color reproduction range is expanded, but manual skill and effort are required for generating image data
Solution Approach 1:
The patent creates a universal color conversion system that handles both traditional CMYK colors and fluorescent NM colors through a unified mathematical framework. The color conversion apparatus performs multiple functions: converting standard color data, calculating dot percentages for both process and fluorescent colors, and generating ready-to-print image data. This multi-functional approach expands color reproduction range while maintaining ease of operation through automation
4Illumination intensity
If fluorescent ink is used in offset printers with toning, then color brightness is improved, but ink generation requires advance toning processing
Solution Approach 1:
The patent performs preliminary color conversion calculations to determine the exact dot percentages of fluorescent colors needed before actual printing. By pre-calculating the optimal fluorescent color proportions based on the input image data and desired color output, the system eliminates the need for advance ink toning processing. The color conversion apparatus provides a complete printing-ready solution that maintains ink brightness while simplifying the manufacturing process
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables the generation of image data with expanded color reproduction range and improved hues by automatically setting device values for fluorescent magenta, preventing color darkening and allowing for flexible toner usage, thus simplifying the process of creating bright and saturated colors.
Implementation Method 1
fluorescent color material (fluorescent ink, fluorescent toner, or the like) to which a fluorescent substance is added
Data Source
AI summary
An image processing apparatus includes: an acquisition unit configured to acquire a plurality of first color values in a device independent color space, from information defining a predetermined gamut; a setting unit configured to set predetermined first dot percentages of a fluorescent color for the plurality of first color values acquired by the acquisition unit; a calculation unit configured to calculate a second dot percentage of the fluorescent color, based on a relationship between the plurality of first color values and the first dot percentages, the second dot percentage corresponding to an arbitrary second color value in the color space; and a generation unit configured to generate a first profile to convert the second color value to dot percentages of a process color and the fluorescent color, based on the second color value and the second dot percentage calculated by the calculation unit.