Mobile Display Color Calibration via Appliance Camera
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Solution Overview
Problem
Modern household appliances with cameras struggle to provide realistic color reproduction of food preparation, leading to user misinterpretation due to unsuitable color reproduction by mobile device displays, which differ in reproduction properties and require costly calibration with standardized charts or hardware.
Innovation Solution
A method where a calibration image is generated by a household appliance's camera of the mobile terminal's display, allowing color adjustments between the calibration image and expected colors, eliminating the need for standardized charts and additional hardware, enabling user-calibrated display devices without costly procurement measures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If standardized color charts or hardware such as a colorimeter are used to calibrate display devices, then color reproduction accuracy is improved, but device complexity and cost increase
Solution Approach 1:
The household appliance serves itself by using its own camera to capture the display device and perform color calibration without requiring external calibration hardware or standardized color charts. The system self-calibrates by comparing captured display colors against reference color values stored in its control unit.
Solution Approach 2:
The display device itself acts as an intermediary medium for calibration. Instead of using separate calibration tools, the system uses the display device's own screen to present calibration colors that are captured by the appliance's camera, eliminating the need for external calibration artifacts.
2Measurement precision
If standardized color charts or colorimeter hardware are used for calibration, then color reproduction accuracy is improved, but procurement cost and time increase
Solution Approach 1:
The system eliminates the need for users to procure external calibration materials by using resources already available in the household appliance (camera and control unit), thereby saving both procurement time and preparation time for calibration.
Solution Approach 2:
The invention extracts the calibration functionality from external specialized tools and integrates it directly into the household appliance's existing camera system, removing the need for separate calibration hardware procurement and setup.
3Measurement precision
If display devices are calibrated individually for each device, then color reproduction accuracy is improved, but the calibration process becomes more complex
Solution Approach 1:
Each display device is calibrated individually through an automated process where the household appliance's camera captures the display screen and the control unit automatically compares colors and adjusts calibration parameters, eliminating the need for manual intervention in individual device calibration.
Solution Approach 2:
The system adjusts display calibration parameters automatically based on captured color values. The control unit modifies display settings to minimize color deviations between what is shown on the display and what is captured by the camera, achieving device-specific calibration through parameter optimization.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method simplifies the calibration process by using the mobile device's display to reproduce colors, ensuring realistic image material representation with reduced effort and cost, improving user comfort and accuracy in monitoring cooking or baking status.
Implementation Method 1
a calibration image representing the calibration color is generated by recording the display device of the mobile terminal using the camera of a household appliance
Data Source
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AI summary
The invention relates to a method for calibrating a display device (18) of a mobile device (12), comprising the steps of: displaying at least one calibration color by means of the display device (18) of the mobile device (12), generating a calibration image representing the calibration color by recording the display device (18) of the mobile device (12) by means of a camera (26) of a household appliance (14), and calibrating the display device (18) of the mobile device (12) on the basis of the deviations of the color values of the calibration image from the calibration color.