Color Chart Page Identification Using Segmented Patches
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Solution Overview
Problem
Existing color calibration methods for printers do not effectively confirm the page being measured during color chart measurement, leading to potential errors in generating color correction data.
Innovation Solution
An information processing device that extracts page information from color measurement results, using identification patches on a color chart to recognize the page being measured and generate accurate color correction data, even if measurements are not in the correct order.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of colors measured is increased to produce precise color correction data, then measurement precision is improved, but the number of color chart pages increases making it difficult to track which page is being measured
Solution Approach 1:
The color chart is divided into multiple pages with identification patches on each page. Each identification patch contains encoded page information that segments the overall measurement task into trackable individual page measurements, allowing precise color correction data collection across multiple pages while maintaining page identification capability
Solution Approach 2:
An identification patch acts as an intermediary element between the color chart pages and the measurement system. This patch contains encoded page information that mediates the communication between the physical page being measured and the digital measurement records, ensuring correct page identification is maintained even as the number of measurement pages increases
2Productivity
If color measurement is performed on multiple pages without page identification, then productivity is improved by batch processing, but reliability deteriorates due to potential measurement of wrong pages
Solution Approach 1:
Page identification information is pre-encoded into identification patches on each color chart page before measurement begins. This preliminary encoding of page identity allows the measurement system to verify and track which page is being measured during batch processing, maintaining reliability while enabling productive multi-page measurement workflows
Solution Approach 2:
The measurement system uses the encoded identification information from each page's identification patch to provide feedback verification. This feedback mechanism confirms that the correct page is being measured and recorded, ensuring reliability of color correction data even when processing multiple pages efficiently
Data Source
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AI summary
Provided is technology enabling identifying the page of a color chart being measured while measuring the colors of the color chart, and generating color correction data. An information processing device 100 has a generator 121 that generates image data for printing a color chart 200 including, in part of the multiple patches, patches of an identification patch group 210 that represents page information by the sequence of patches in the group, the page information being at least one of the page number and order of pages in the color chart 200; an extractor 125 that extracts, from the color measurement results of the color chart 200 printed based on the image data, the page information represented by the patch sequence of the identification patch group 210 in the color chart 200; and an adjuster 127 that generates color correction data based on the color measurement results of the color chart 200.