Focusing method and focusing device of ultra-short-focus projector and readable storage medium

Abstract

The invention relates to the technical field of image processing and projection focusing, in particular to a focusing method and a focusing device of an ultra-short-focus projector and a readable storage medium. The focusing method comprises the following steps: positioning projection picture area positions in projection picture images acquired by two image acquisition devices; projecting a projection image to the projection surface, driving the focusing motor to rotate and enabling the two image acquisition devices to shoot projection pictures respectively; respectively converting the acquired projection picture images into projection picture area images, screening a focusing motor position with optimal comprehensive definition data as a focusing position according to the definition dataof the two projection picture area images, and driving a focusing motor to reach the focusing position to complete focusing. By splicing the data of the two projection picture area images and then carrying out definition analysis, the effect similar to an image splicing mode is achieved, the calculation complexity is greatly reduced, and meanwhile the problem that errors are introduced into definition data in an original image due to errors of the splicing method can be avoided.

Description

technical field [0001] The invention relates to the technical field of image processing and projection focusing, and in particular to a focusing method, a focusing device and a readable storage medium of an ultra-short-focus projector. Background technique [0002] In the ultra-short-throw projectors currently on the market, manual focus is generally used, and there is no automatic focus function. The main reasons are as follows. The method of focusing based on distance measurement requires high equipment consistency and poor applicability. Therefore, the mainstream focusing method is to analyze the image quality to focus, but it is difficult for the projector to ensure that the optical machine is completely free of virtual reality. Therefore, the focus must be focused on the full screen to ensure the effect; in addition, because the distance between the projector and the projection surface is too close, it is difficult for an ordinary single camera to capture the entire pro...

AI Technical Summary

Problems solved by technology

The main reasons are as follows. The method of focusing based on distance measurement requires high equipment consistency and poor applicability. Therefore, the mainstream focusing method is to analyze the image quality to focus, but it is difficult for the projector to ensure that the optical machine is completely free of virtual reality. Therefore, the focus must be focused on the full screen to ensure the effect; in addition, because the distance between the projector and the projection surface is too close, it is difficult for an ordinary single camera to capture the entire projection screen, and if a wide-angle camera is used, the captured image Distortion, as well as distortion of the projected picture itself, can interfere with image quality assessment

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