Color Conversion Tables for Mixed-Color-Space Document Matching
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Solution Overview
Problem
Existing methods fail to accurately create a color conversion table for document data containing objects with signal values from multiple color spaces, leading to inaccurate color reproduction.
Innovation Solution
An information processing apparatus that aligns document data with scan data to identify and separate objects by color space, extracting signal values for each space, and creates a color conversion table for precise color matching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a color conversion table is created without determining whether document data includes objects of multiple color spaces, then the creation process is simple, but color reproduction accuracy deteriorates
Solution Approach 1:
The patent segments the color conversion process by determining whether document data includes objects of multiple color spaces. When multiple color spaces are detected, the system creates separate color conversion tables for each color space (CMYK and RGB) rather than using a single unified conversion table. This segmentation enables accurate color reproduction for each color space while maintaining a systematic and manageable creation process.
2Ease of operation
If color conversion setting is performed without creating a color conversion table for each color space, then the process is simpler, but it is not possible to associate signal values with print target values for each color space
Solution Approach 1:
The patent applies preliminary action by determining the color space composition of document data before performing color conversion. The system identifies whether the document contains objects of multiple color spaces (CMYK and RGB) and prepares appropriate color conversion tables in advance. This preliminary determination ensures that signal values can be correctly associated with print target values for each specific color space, preventing information loss while maintaining operational efficiency.
3Productivity
If a single color conversion table is used for document data with mixed color spaces, then the conversion process is simpler, but color matching accuracy for each color space deteriorates
Solution Approach 1:
The patent implements a dynamic color conversion approach where the system automatically adapts the color conversion process based on the detected color space composition of the document data. When multiple color spaces are detected, the system dynamically switches to creating and applying separate color conversion tables for each color space. This dynamic adaptation maintains high color matching accuracy for each color space while optimizing processing efficiency through automated detection and selection.
Data Source
AI summary
An information processing apparatus that performs color matching based on document data and scan data is provided. The information processing apparatus receives an input of document data and an input of scan data, aligns the document data and the scan data, and creates a color conversion table for color matching for at least one color space of an object included in the document data based on the document data and the scan data that have been aligned.