Color Correction Data Generator for Display Metamerism
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Solution Overview
Problem
The metamerism failure phenomenon, where images are recognized as different colors by the human eye despite identical color coordinates, occurs due to variations in display panel manufacturing and light emitting element types, leading to inconsistent color perception across different display devices.
Innovation Solution
An apparatus and method that include a color difference detector to display color difference test images, a color correction data generator to create color correction data based on user recognition of color differences, and an image correction data generator to adjust color coordinates for each grayscale, thereby correcting color recognition issues across different display devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If color coordinates are set to be the same for different display panels, then color standardization is achieved, but metamerism failure occurs causing different color perception by users
Solution Approach 1:
The patent applies preliminary action by pre-determining critical peak wavelength shift values through experiments before actual display operation. The system performs color difference experiments in advance to establish critical wavelength shift thresholds, which are then used to guide real-time color correction decisions, preventing metamerism failure before it occurs
Solution Approach 2:
The patent changes the parameter approach from solely relying on color coordinates to incorporating peak wavelength information. By detecting and comparing peak wavelengths of different display panels and applying corrections based on critical wavelength shift values, the system maintains color consistency across devices with different spectral characteristics
2Reliability
If color correction is applied to prevent metamerism failure, then color perception accuracy is improved, but system complexity increases due to additional detection and correction mechanisms
Solution Approach 1:
The patent replaces complex physical measurement and manual adjustment mechanisms with a computational approach. Instead of physical color matching instruments and manual calibration procedures, the system uses peak wavelength detection combined with algorithmic correction based on pre-determined critical values, simplifying the overall system architecture
Solution Approach 2:
The patent introduces peak wavelength detection as an intermediary parameter between the display panel's physical characteristics and the final color output. This intermediary enables indirect correction of color perception issues without requiring direct complex measurements of human visual response, bridging the gap between physical device properties and perceptual accuracy
Data Source
AI summary
An apparatus for correcting an image according to the disclosure includes a color difference detector displaying color difference test images and obtaining color difference recognition information of a user with respect to the color difference test images, a color correction data generator displaying color correction test images based on the color difference recognition information and generating color correction data for correcting color coordinates using the color correction test images, and an image correction data generator generating image correction data for correcting color coordinates for each grayscale of the image displayed by the display device based on the color difference recognition information and the color correction data.