Lens motor step length determination method and device, equipment and medium

Abstract

The embodiment of the invention discloses a lens motor step length determination method and device, equipment and a medium. The method comprises the following steps: when an exposure value of a shot picture is adjusted to be a normal exposure value based on an automatic exposure mode, determining a shutter speed and a gain value corresponding to the normal exposure value; shooting multiple frames of first images based on the shutter speed and the gain value corresponding to the normal exposure value; a motor in the electric aperture lens is controlled to move by a preset step length in a preset direction, and a second image is shot at the position where the motor is located after movement; and determining the motor step length based on the first image and the second image. According to the embodiment of the invention, the step length of the lens motor can be automatically determined based on the acquired image, the usability is high, manual configuration is not needed, the labor cost is reduced, and conditions are provided for controlling the size of an aperture and prolonging the service life of the lens.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of electronic equipment, and in particular, to a method, device, device and medium for determining a step size of a lens motor. Background technique [0002] Currently, the same electronic device (such as a camera or a projector) may use multiple types of precision iris lenses (p-iris for short). Among them, the electric aperture lens automatically and precisely controls the size of the aperture by controlling the motor (stepping motor) in the lens. Its main purpose is to set the best aperture position so that most of the center of the lens and the part with the best effect can be used, so that the effect of the lens at the best aperture position is the best, the optical error is greatly reduced, and the image quality is improved. Therefore, in It is widely used in the field of electronic equipment. [0003] Due to different manufacturers and lens types, there are differences in the d...

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Problems solved by technology

[0004] However, the manual configuration of the motor step size parameters in the electric aperture lens is not only easy to use, but also difficult to obtain the motor step size parameters.

Moreover, if the wrong step size parameter is obtained, the electronic device will not be able to reach the corresponding optimal position when controlling the aperture size based on the wrong step size parameter, resulting in poor image quality captured by the electronic device. step length, the motor collides with the inner wall of the electric iris lens, which shortens the service life of the electric iris lens

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