Printing Device Priority-Based Patch Chart Generation
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Solution Overview
Problem
Conventional image processing devices fail to perform appropriate color calibration based on user intent, as they rely on colorimetric values from specific color patches without considering the priority or distribution of colors in the image data.
Innovation Solution
A printing device and method that allows users to designate priority pixels, determining the number and size of color patches based on user input, and prints a patch chart with varying patch sizes and numbers to enhance color calibration accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional image processing devices use colorimetric values from specific color patches for calibration, then the calibration process is simple, but the color calibration accuracy does not reflect user intent
Solution Approach 1:
The image is divided into multiple pixel regions, and color patches are selectively generated based on the priority of each pixel's color. High-priority pixels generate color patches for calibration, while low-priority pixels do not, allowing focused calibration on important color regions.
Solution Approach 2:
Different treatment is applied to different color regions based on their priority. High-priority color regions receive calibration processing through generated color patches, while low-priority regions skip this step, optimizing calibration resources for important areas.
2Measurement precision
If the number of color patches for calibration is increased, then color calibration accuracy improves, but the printing time and processing complexity increase
Solution Approach 1:
Instead of processing all pixels uniformly, the system applies calibration processing only to high-priority pixels that contribute most to color accuracy. This partial action approach achieves good calibration results without the overhead of processing every pixel.
Solution Approach 2:
The system dynamically changes the number of color patches generated based on pixel priority. High-priority pixels generate color patches for calibration, while low-priority pixels do not, allowing flexible adjustment of calibration intensity based on image requirements.
3Adaptability or versatility
If color patches are generated for all pixels, then comprehensive color coverage is achieved, but the patch chart size and processing time increase significantly
Solution Approach 1:
The system extracts only the high-priority pixels from the image and generates color patches based on these selected pixels. This extraction approach reduces the number of patches needed while maintaining color accuracy for important regions.
Solution Approach 2:
The system performs calibration processing partially, only for high-priority pixels, rather than excessively processing all pixels. This selective approach reduces patch chart size while maintaining adequate color coverage for important areas.
Data Source
AI summary
A printing device comprises a head including nozzles configured to eject ink and is configured to print, with use of the ink, an image having a plurality of pixels on a printing medium, an input device configured to receive information designating a pixel in the image, and a controller. The controller performs judging a priority of a designated color of a designated pixel designated by the information designating the pixel, determining one of conditions including a number, sizes, and the number and sizes of the designated patches of the designated color, based on the priority judged by the judging, and printing a patch chart containing the designated patch according to the one of the conditions on the printing medium.