Print Preview Apparatus Color Gamut Adjustment
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Solution Overview
Problem
Current print preview systems face challenges in accurately reproducing colors due to differences in color gamut between display and print devices, limiting user adjustment capabilities and increasing costs for calibration and profile generation, while also being influenced by environmental factors and individual user perceptions.
Innovation Solution
A print preview apparatus that includes an output control section for generating adjustment charts with print color sample images, a conversion section for converting color data between print and display devices, and an adjustment section that allows users to adjust display color sample images based on user input, including options for compression methods when colors exceed the display device's gamut, to match the intended print colors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If color conversion profile calibration is performed using measuring devices and software, then color reproducibility accuracy is improved, but cost and operational complexity increase
Solution Approach 1:
The patent replaces expensive, specialized measuring devices and calibration software with a simple adjustment chart that can be printed and visually compared. The adjustment chart serves as a disposable, low-cost alternative to complex calibration equipment, enabling users to perform color adjustments without investing in specialized tools.
Solution Approach 2:
The system enables users to perform their own color adjustments by visually comparing the adjustment chart with the preview display and inputting adjustments through a simple interface. This eliminates the need for specialized calibration services or complex software, allowing end-users to self-service their color accuracy needs.
2Stability of the object's composition
If the entire color gamut is adjusted to match display device, then color consistency between preview and print is improved, but the ability to preserve print-specific color characteristics is lost
Solution Approach 1:
The patent enables users to adjust colors locally by selecting specific color phases or regions of the adjustment chart and applying adjustments only to those areas. This allows different parts of the color gamut to be adjusted independently, preserving print-specific characteristics in some areas while improving consistency in others.
Solution Approach 2:
The system provides dynamic adjustment capabilities where users can modify color settings interactively based on their specific needs. The adjustment values can be applied selectively to different color phases, and users can iteratively refine their adjustments to achieve the desired balance between consistency and color characteristic preservation.
3Measurement precision
If color adjustments are applied to the entire image, then overall color accuracy is improved, but the ability to adjust specific color phases independently is lost
Solution Approach 1:
The adjustment chart is divided into multiple color phases, and users can select which color phases to adjust. This enables partial adjustments to specific color ranges (e.g., only reds or only blues) while leaving other colors unchanged, providing fine-grained control over color accuracy.
Solution Approach 2:
The color adjustment process is segmented into discrete color phases that can be adjusted independently. The system processes each color phase separately based on user selections, allowing targeted adjustments to specific portions of the color spectrum rather than forcing a global adjustment approach.
4Loss of energy
If preview display is used to confirm image color before printing, then resource waste is reduced, but color accuracy between display and print deteriorates due to gamut differences
Solution Approach 1:
The adjustment chart serves as an intermediary tool that bridges the gap between display and print color spaces. By providing a visual reference that users can compare against both the preview display and the actual print output, it enables accurate color prediction without requiring perfect color matching between display and print devices.
Solution Approach 2:
The system performs preliminary color adjustments based on user feedback from the adjustment chart before actual printing occurs. Users can preview and adjust color settings in advance, allowing them to confirm image color accuracy before committing to the printing process, thereby reducing resource waste while maintaining color accuracy.
Data Source
AI summary
Disclosed is a print preview apparatus including: an output control section which outputs an adjustment chart with a plurality of print color sample images formed based on a color data value of a color space depending on a print device adjusted to a color gamut reproducible by the print apparatus; a conversion section which converts each color data value of the color space depending on the print device to a color data value of a color space depending on a display device; a display section which displays a plurality of display color sample images corresponding to each of the plurality of print color sample images; and an adjustment section which presents the plurality of display color sample images displayed on the display section and which adjusts a color data value indicating a color of the presented display color sample image based on color adjustment information.