Screen Calibration via Chromaticity Coordinate Matching
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Solution Overview
Problem
Existing screen calibration methods rely on subjective human judgment and are prone to inaccuracies, leading to noticeable color differences between display screens, especially when multiple screens are combined, causing visual fatigue and unobjective assessments.
Innovation Solution
A method and system for calibrating display screens by acquiring chromaticity coordinates under different parameters, identifying the pair with the shortest distance, and storing corresponding parameters to align the color output, eliminating the need for human judgment and improving accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple display screens are spliced together to form a large display screen, then the display area is increased, but the color difference between screens becomes noticeable
Solution Approach 1:
The patent applies parameter changes by systematically varying register parameters (such as gamma correction parameters, color temperature parameters, and brightness parameters) to adjust the chromaticity coordinates of each display screen. By changing these parameters and measuring the corresponding chromaticity coordinates, the system can precisely control and match the color output of multiple screens, thereby resolving the color consistency issue when screens are spliced together.
2Ease of operation
If screen calibration is performed using subjective human judgment, then the process is simple, but the accuracy and objectivity of calibration deteriorates
Solution Approach 1:
The patent replaces the mechanical system of subjective human visual judgment with an objective measurement system using a colorimeter or spectrophotometer. The instrument quantitatively measures the chromaticity coordinates of each display screen, eliminating the subjectivity and fatigue associated with human visual assessment. This substitution of measurement method significantly improves calibration accuracy while maintaining operational simplicity through automated parameter adjustment.
Data Source
AI summary
Provided are a screen calibration method, apparatus and systems. The screen calibration method comprises steps of: acquiring the chromaticity coordinates of the display screen to be calibrated under different parameters, and storing the parameter corresponding to the closest chromaticity coordinate into a register to realize screen calibration.