An Adaptive Black Level Correction Method
A black level correction and black level technology, which is applied in the field of image processing, can solve the problems of image quality that needs to be improved, less parameters, and inaccuracy, and achieves the effect of reducing the influence of contrast, enhancing image contrast, and improving image quality.
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Embodiment 1
[0062] Please refer to figure 1 , Embodiment 1 of the present invention is:
[0063] An adaptive black level correction method, the method is:
[0064] S1 obtains the original image under the total black environment under different exposure times and gains, calculates the black level calibration value of each color channel in the original image obtained under the total black environment, and stores it;
[0065] S2 acquires the current image, as well as the current exposure time and the current gain;
[0066] S3 uses the linear interpolation method to calculate the current black level calibration value of each color channel corresponding to the current exposure time and the current gain according to the stored black level calibration values under different exposure times and gains;
[0067] S4 performs black level correction on the current image by using the current black level calibration values of the respective color channels.
[0068] Wherein, the data format of the ...
Embodiment 2
[0069] Please refer to Figure 1 to Figure 4 , the second embodiment of the present invention is:
[0070] An adaptive black level correction method, on the basis of Embodiment 1, specifically:
[0071] 1. Please refer to figure 2 , in step S1, under different exposure times and gains, the original image in a completely black environment is obtained, and the black level calibration value of each color channel in the obtained original image in a completely black environment is calculated, specifically:
[0072] S11 preset minimum exposure time, maximum exposure time, minimum gain, maximum gain, exposure time increase threshold, gain increase threshold;
[0073] S12 adjusts the exposure time to the minimum exposure time, adjusts the gain to the minimum gain, and stores it;
[0074] S13 acquires the original image in a completely dark environment;
[0075] S14 calculates and stores the black level calibration value of each color channel of the original image acquired in a co...
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Abstract
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