Focusing method and system

Abstract

The invention provides a focusing method and system, and relates to the technical field of focusing. The method comprises the following steps that: projection equipment controls a driving device to perform focusing operations in sequence according to a first preset step length, and projects a pre-stored identification picture under different focal distances to generate projection pictures; terminal equipment acquires a projection picture corresponding to a current focal distance before performing a next focusing operation under the action of the driving device, and calculates the definition of the projection picture; the terminal equipment generates a focusing stopping instruction when the definition of the projection picture acquired at the current focal distance is smaller than the definitions of projection pictures corresponding to previous N adjacent focal distances; and the projection equipment controls the driving device to stop the focusing operations according to the focusing stopping instruction. Through the method, the problem of incapability of automatically and accurately focusing in the absence of an image acquisition device in the projection equipment in the prior art can be solved, so that the problems of complex structure and high manufacturing cost due to the need of specially arranging the image acquisition device are solved.

Description

technical field [0001] The present invention relates to the technical field of focusing, in particular to a focusing method and system. Background technique [0002] With the continuous expansion of the application range of projection equipment, it has gradually expanded from the field of commercial office to the field of education, study and family life. With the continuous increase of application fields, users pay more and more attention to the projection effect of projection equipment, especially the clarity of image quality directly affects the user experience. The clarity of the image quality is generally related to the focal length of the projection device when projecting. Therefore, when using the projection device for projection operation, a focusing operation will be performed to obtain a projection image with high image quality and clarity. [0003] In the prior art, there are generally two focusing methods, including manual focusing and automatic focusing. Manua...

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Problems solved by technology

[0005] In view of this, the purpose of the present invention is to provide a focusing method, by which the problem of the prior art that cannot perform automatic and precise focusing because the projection equipment is not provided with an image acquisition device can be solved, thereby solving the problem of the need for special setting However, the image acquisition device has the problems of complex structure and high manufacturing cost

[0006] Another object of the present invention is to provide a focusing system. Through this system, the problem in the prior art that automatic and precise focusing cannot be performed because the projection equipment is not equipped with an image acquisition device can be solved, thereby solving the problem that the image acquisition device needs to be specially set. The device has the problems of complex structure and high manufacturing cost

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