Projection frame automatic correction method and device

An automatic correction and projection plane technology, which is applied in the field of projectors, can solve the problems of projector projection image offset, poor user experience, and failure to meet actual needs, so as to avoid time-consuming and laborious, improve competitiveness, and improve user experience.

Active Publication Date: 2018-07-17
GOERTEK INC
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Problems solved by technology

[0004] The present invention provides a projection screen automatic correction method and device to solve the pro

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  • Projection frame automatic correction method and device
  • Projection frame automatic correction method and device

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Embodiment Construction

[0025] The design idea of ​​the present invention is to propose an automatic projection screen correction scheme for the current projectors (including smart micro-projectors) where the projection screen is offset and the normal image cannot be obtained, which affects the user experience. The most commonly used mode of smart projectors is vertical projection, that is, the light beam emitted by the projector is vertically projected onto a plane to form an image. The technology of vertical projection is the simplest. The image does not need any processing. As long as the focal length of the beam is adjusted, the desired image can be projected. But vertical projection has a characteristic, that is, it needs a wall or curtain perpendicular to the ground to be used with a projector. This limits the development of projectors to a certain extent, and cannot meet the use requirements of certain scenes, so oblique projection came into being.

[0026] Oblique projection, as the name sug...

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Abstract

The present invention discloses a projection frame automatic correction method and device. The method comprises the steps of: obtaining a depth image obtained by capturing a projection space by a depth camera on a projector, and determining a relative position relation of the projection plane and the projector according to the depth image, the maximum projection angle of the projector in a vertical direction and the maximum projection angle of the projector in a horizontal direction; and performing rectangular correction of the projection frame projected on the projection plane according to the relative position relation of the projection plane and the projector. The projection frame automatic correction method and device provided by the embodiment of the invention automatically process the projected frame to obtain an appropriate frame after rectangular correction so as to avoid the problems of time and labor waste caused by manual regulation of the projection frame, meet the actual demand, improve the user experience and improve the competitiveness of the projector.

Description

technical field [0001] The invention relates to the technical field of projectors, in particular to a method and device for automatically correcting a projection screen. Background technique [0002] With the advancement of technology, the field of projectors has also achieved rapid development. Smart projectors have appeared on the market. Smart projectors refer to projectors that have added wireless Wi-Fi Internet access and are equipped with smart operating systems. Android The system is the most widely used intelligent operating system in this series of products. Smart projectors have the characteristics of small size, easy operation, multi-function, portability, and more flexible projection methods and distance settings, so they are widely used in business conferences and other occasions. [0003] However, when the existing projectors are projecting, for example, in the case of oblique projection, since the incident angle of the oblique projection is not vertical, the ...

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Application Information

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IPC IPC(8): H04N9/31
CPCH04N9/3185H04N9/3194
Inventor 朱剑张向东罗志平严栋于振宇
Owner GOERTEK INC
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