Camera Color Adjustment Using Proportion Coefficients
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Solution Overview
Problem
The existing camera color adjustment process is time-consuming as it requires photographing test drawings under multiple light sources, significantly lowering production efficiency.
Innovation Solution
A method and apparatus that utilize a stored proportion coefficient to generate test photos under different light sources by acquiring and calculating RGB values, allowing for accelerated color adjustment by shooting test drawings under a predefined light source and applying proportion coefficients to obtain corresponding RGB values for each light source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If test photos are taken under multiple light sources (D65, TL84, AL, CWF, H), then color adjustment accuracy is improved, but production time increases significantly
Solution Approach 1:
The patent pre-calculates and stores proportion coefficients for different light sources based on a reference light source. These coefficients are prepared in advance and stored in a database, so when color adjustment is needed, the system can directly retrieve and apply the appropriate coefficients without performing time-consuming physical measurements under each light source condition.
Solution Approach 2:
The patent creates virtual test photos by copying and transforming reference test photo data using proportion coefficients. Instead of physically capturing test photos under multiple different light sources, the system generates synthetic test photos for each light source by applying the corresponding proportion coefficient to the reference test photo, thereby replicating the effect of multiple light source measurements without the time cost.
2Loss of information
If 24 test drawings are photographed under each light source, then comprehensive color data is obtained, but the adjustment process becomes extremely time-consuming
Solution Approach 1:
The patent establishes a universal reference test photo that can serve as the basis for generating test data for multiple different light sources. By taking only one reference test photo and applying different proportion coefficients, the system obtains comprehensive color data for all light sources, making the reference photo multi-functional and eliminating the need to physically photograph test drawings under each light source condition.
Solution Approach 2:
The patent changes the light source parameter virtually by applying different proportion coefficients to the reference test photo. Each proportion coefficient represents a different light source condition, and by changing this parameter mathematically rather than physically, the system maintains complete color data coverage while dramatically improving adjustment efficiency.
3Measurement precision
If physical test photos are taken under each light source condition, then accurate color information is captured, but the complexity of the adjustment process increases
Solution Approach 1:
The patent introduces proportion coefficients as an intermediary element between the reference test photo and the various light source test photos. These coefficients act as mediators that transform the reference photo data into accurate representations of different light source conditions, maintaining measurement precision while simplifying the overall process by eliminating the need for complex physical setup and measurement under each light source.
Data Source
AI summary
The present invention discloses a camera color adjusting method and apparatus. The method comprises: acquiring a stored proportion coefficient of an image sensor of a camera under a light source to be tested; controlling the camera to shoot test drawings including color blocks under a predefined light source to obtain test photos under the predefined light source; acquiring RGB values of each color block in the test photos under the predefined light source; generating test photos corresponding to the light source to be tested according to the RGB values of each color block and the proportion coefficient under each light source to be tested; and performing color adjustment for the camera according to all the test photos.