Video Color Correction via Peripheral Brightness Lookup Table
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Solution Overview
Problem
Video devices face challenges in maintaining color visibility and range of color reproduction when peripheral brightness exceeds the device's brightness, leading to reduced color recognition due to added surrounding light and eye adaptation, with existing solutions only compensating for saturation in dark conditions without addressing bright environments.
Innovation Solution
An apparatus and method that create a lookup table based on the saturation of the video device and peripheral brightness to correct colors using a weight-based approach, incorporating color-correction and error-compensation units to enhance visibility by adjusting color reproduction according to peripheral conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the peripheral brightness is higher than the brightness of a color reproduced by the video device, then the user erroneously recognizes the color or has difficulty in recognizing it, but the patent applies no correction mechanism
Solution Approach 1:
The patent changes the color reproduction parameters dynamically based on peripheral brightness conditions. When peripheral brightness is detected to be higher than the reproduced color brightness, the system adjusts color signal gain and gamma values to compensate for the harmful effect, thereby maintaining accurate color recognition despite the interfering peripheral light.
Solution Approach 2:
The patent implements a feedback mechanism where peripheral brightness is detected and used to adjust color reproduction parameters. The system continuously monitors peripheral brightness conditions and modifies color signal processing accordingly, creating a closed-loop control system that adapts to environmental lighting conditions.
2Reliability
If existing correction devices adjust gamma and color signal gain for dark surroundings, then saturation reduction is compensated, but visibility and color reproduction range are not improved in bright environments
Solution Approach 1:
The patent makes the color correction parameters dynamic rather than static. Instead of using fixed correction values, the system adjusts gamma and color signal gain in real-time based on detected peripheral brightness conditions. This dynamic adaptation allows the same device to optimize color reproduction for both dark and bright environments, significantly improving versatility.
Solution Approach 2:
The patent creates a universal correction mechanism that handles multiple brightness conditions (dark and bright surroundings) with a single integrated system. By detecting peripheral brightness and applying appropriate correction parameters, the device can reliably compensate for saturation reduction in dark conditions while also improving visibility and color reproduction range in bright conditions, making it adaptable to diverse environmental scenarios.
Data Source
AI summary
An apparatus and method are provided for correcting a color reproduced by a video device according to peripheral brightness so that the visibility of the video device is guaranteed under peripheral conditions brighter than the video device. The apparatus for correcting a color reproduced by a video device according to peripheral brightness includes: a lookup-table-creation unit which creates a lookup table based on saturation of the video device and brightness of peripheral conditions; a color-correction unit which corrects the color reproduced by the video device according to the created lookup table; and a color-error-compensation unit which compensates for color error resulting from correction of the color. The method of correcting a color reproduced by a video device according to peripheral brightness includes: creating a lookup table based on saturation of the video device and brightness of peripheral conditions; correcting the color reproduced by the video device according to the created lookup table; and compensating for color error resulting from correction of the color.