Colorimetric Chart Creating Apparatus Grouping Patches
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Solution Overview
Problem
Existing colorimetric charts face misrecognition issues due to color deviation, especially when patches with overlapping error ranges are used, leading to incorrect identification of the printing device and print date/time.
Innovation Solution
Grouping patches with overlapping error ranges into the same group and determining the arrangement order of these groups to express desired information, such as device ID and print date/time, ensuring accurate recognition even with color deviation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If patches with close colors are used to express information in arrangement order, then the information capacity increases, but misrecognition occurs due to overlapping error ranges
Solution Approach 1:
The invention segments the colorimetric chart into multiple pages, with each page containing a specific number of patches arranged in a defined pattern. This segmentation allows the system to process and identify patches in manageable units, reducing the complexity of identifying individual patches among many close-color patches across the entire chart.
Solution Approach 2:
The invention pre-arranges patches in a specific pattern on each page before printing, creating a known reference structure. This preliminary arrangement allows the colorimeter to systematically search and identify patches based on their predetermined positions and color sequences, enabling accurate information extraction even when color deviation occurs.
2Loss of information
If many patches are used to encode device information and print details, then the information expression capability improves, but the complexity of correct identification increases
Solution Approach 1:
The invention divides the colorimetric chart into multiple pages, with each page containing a controlled number of patches (e.g., 10 patches per page). This segmentation limits the information encoding complexity on each page while distributing the total information across multiple pages, making the identification process more manageable.
Solution Approach 2:
The invention adds the page dimension to the patch arrangement structure. Instead of encoding all information in a single sequence of patches, the system uses multiple pages where each page contributes to the overall information. This dimensional expansion allows for more information expression while maintaining controlled complexity on each page through systematic page-by-page processing.
3Adaptability or versatility
If colorimetric charts are made visually identical, then standardization improves, but visual identification of the correct chart becomes difficult
Solution Approach 1:
The invention extracts identification information from the visual appearance of the chart and encodes it within the patch color sequences themselves. Instead of relying on external visual markers or text on the chart, the system embeds device information and chart identity within the arranged patches, allowing standardization while enabling identification through colorimetric analysis rather than visual inspection.
Data Source
AI summary
A colorimetric chart creating apparatus includes a hardware processor that: groups a plurality of patches having different colors and to be arrayed in a colorimetric chart such that patches having an overlapping error range of color reproducibility belong to a same group; determines an arrangement order of the plurality of patches such that an arrangement order of the groups expresses desired information; and creates print data of the colorimetric chart in which the plurality of patches is arrayed in the determined arrangement order.