All weather exposure gaining automatic regulation method and system

Abstract

The invention discloses an all weather exposure gaining automatic regulation method and an all weather exposure gaining automatic regulation system. The method comprises the following steps which are repeatedly executed: calculating an actual grey scale value of the shooting image; judging the state according to the calculated actual grey scale value and entering a corresponding mode; and calculating an exposure value and a gain value according to a corresponding user expected grey scale value set in the corresponding mode, adjusting a camera according to the calculated exposure value and gain value, and then shooting. The system comprises a grey scale value computation module, a grey scale value judgment module, a strobe lamp judgment module and an adjustment module. According to the illumination intensity under a shooting environment, the system can enter the corresponding mode, the exposure and gain parameters of the camera can be rapidly and automatically adjusted, so that the grey scale value of an image can achieve the grey scale value expected by a user, the best shooting effect is obtained, and the shooting image quality is improved.

Description

technical field

[0001] The present invention relates to an all-weather exposure gain automatic adjustment method and system, in particular to a all-weather automatic adjustment method and system for camera exposure parameters and gain parameters. Background technique

[0002] At present, the camera is provided with two modules of automatic exposure adjustment and automatic gain adjustment, which control the brightness of the captured output image by adjusting the exposure and gain parameters of the imaging sensor of the camera. When the camera parameters (exposure, digital gain, analog gain) are constant, the brightness (gray value) of the image captured by the camera will change with the light intensity of the shooting environment. Therefore, in the process of using the camera, in order to To adapt to the senses of the human eye, the grayscale value of the captured image should be kept at a certain level. Therefore, according to the light intensity in the shooting environme...

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