An automatic exposure method, device, electronic equipment and storage medium

Abstract

The application relates to the field of image processing, and discloses an automatic exposure method, device, electronic equipment and computer-readable storage medium. In the process of changing the magnification, the method adaptively adjusts the aperture by comparing the current aperture value with the maximum aperture value at the magnification to ensure clear images in real time. After zooming, based on the maximum aperture value under the current magnification, the corresponding exposure node is quickly calculated, and the exposure time and gain value are precisely adjusted to achieve the preset brightness value. In this way, regardless of whether the lens has defects in the relative aperture parameters, clear images can be guaranteed during and after zooming, thereby overcoming the problem that lens defects may cause image quality degradation.

Description

technical field [0001] The present application relates to the field of image processing, and in particular to an automatic exposure method, device, electronic equipment and computer-readable storage medium. Background technique [0002] The most important module to adjust the overall brightness of the image in the imaging system is the automatic exposure module. The most common method used by the automatic exposure module is the exposure node method, that is, according to the established exposure route, the exposure time, gain and aperture are adjusted respectively. [0003] In actual application scenarios, whether the setting of the exposure node is reasonable is often strongly related to the imaging element and the application scenario, and the setting of the aperture is very important to the image effect. For example, there is often a need for close-ups of people in a video conference. At this time, some faces need to be enlarged through optical zoom. However, due to co...

AI Technical Summary

Problems solved by technology

However, due to cost and process limitations, the aperture shape of some lenses and the relative aperture parameters of some lenses tend to have defects when they tend to the telephoto end, which will lead to a decrease in image quality, generally manifested as a decrease in image clarity, fogging, etc.

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