Digital Color Matching Offset Calibration for Display Accuracy
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Solution Overview
Problem
Computerized color matching techniques using spectrophotometers often result in inaccurate digital representations of target colors on display devices, leading to difficulties in selecting the correct paint formulation, as variations in display technology can cause discrepancies between perceived and actual colors.
Innovation Solution
A color correction application that adjusts digital images on a computing device's display by determining offset values for each target color, ensuring accurate representation through interpolation and calibration, using devices like spectrophotometers connected via Bluetooth or other communication systems, and storing offset values in a database for mobile devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If digital color information is displayed on a standard display device, then the color can be visually represented, but the displayed color may not accurately match the actual target color due to display variations
Solution Approach 1:
The patent applies parameter changes by modifying the digital color values through calculated offset adjustments. The system determines color offsets by comparing displayed colors with actual target colors, then applies these offsets to correct subsequent color representations, dynamically adjusting the color parameters to compensate for display variations
Solution Approach 2:
The system implements feedback by measuring the actual displayed color and comparing it with the expected target color. The color offset values are determined through this feedback loop, where the difference between displayed and actual colors is used to adjust future color representations, creating a closed-loop correction system
2Measurement precision
If color offset calibration is performed for each display device, then color accuracy is improved, but the system complexity and calibration time increase
Solution Approach 1:
The system applies self-service by automatically determining color offsets without requiring manual intervention or complex calibration procedures. The color measurement device and processing system work together to automatically calculate and apply offset corrections, making the calibration process self-executing and reducing operational complexity
Solution Approach 2:
The patent applies preliminary action by pre-determining color offset values that can be stored and applied to future color matching operations. Once the offsets are calculated for a display device, they are retained for use in subsequent color representations, eliminating the need for repeated calibration and reducing overall system complexity
Data Source
AI summary
A method includes obtaining first color information for each of a plurality of first samples of a first target color with a color measurement device connected to a computing device including a display. A digital color image of at least one first target color is displayed on the display. An offset value for each first target color is determined such that the digital color image of each first target color matches the corresponding first target color on each of the first samples. A second sample including a second target color is scanned to obtain second color information. A processor of the computing device determines, using the offset values of the first target colors, an interpolated offset for the display such that the digital image of the second target color matches the second target color.