Method and device for automatic correction of projection imaging as well as laser television

Abstract

Embodiments of the invention provide a method for automatic correction of projection imaging. The method comprises the following steps of obtaining designated area images through preset image acquisition equipment, wherein the designated area images include projection imaging of an original image and a screen image; determining coordinates of each vertex angle of the projection imaging of the original image and coordinates of each vertex angle of the screen image; computing a horizontal distance and a vertical distance between each vertex angle of the projection imaging of the original image and the vertex angle corresponding to the screen image; judging whether a target vertex angle whose horizontal distance and / or vertical distance from the corresponding vertex angle in the screen imageare / is greater than a preset distance threshold exists in each vertex angle of the projection imaging of the original image; and if yes, correcting horizontal coordinates and / or vertical coordinates of the vertex angle corresponding to the target vertex angle of the projection image of the original image in the preset original image according to a preset step. According to the embodiments of the invention, no user operation is needed, so that the debugging of a laser television is also carried out without the professional debugging personnel.

Description

technical field [0001] The present application relates to the technical field of image processing, in particular to an automatic calibration method for projection imaging, an automatic calibration device for projection imaging, and a laser television. Background technique [0002] Laser TV is a new product that combines laser light source with ultra-short-throw projector technology. refer to figure 1 A schematic diagram of a laser TV. Laser TV includes: projector, TV cabinet, screen. The projector can project vertically upwards. When placed on the TV cabinet close to the wall, it can project large-scale projection images to the screen. In order to perfectly display the image, the parallel relationship between the projection plane of the screen and the lens of the projector is very strict. [0003] When installing a laser TV, professionals are required to correct the position of the projector body, and then fix the projector body to the TV cabinet with screws so that the p...

AI Technical Summary

Problems solved by technology

Its installation is complicated, which is not conducive to users' self-installation, and once the fuselage is fixed, the placement position will be limited

But if the fuselage is not fixed, when the user accidentally touches the fuselage, the position of the projector fuselage will be shifted and the projection will be deformed

Since it is professional to adjust the position of the projector body to correct the projection imaging, it is difficult for users to adjust and correct the projection imaging by themselves.

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