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Projector and projection image rectifying method thereof

A correction method and technology for projecting images, applied in the field of projection, can solve the problems of complex correction process, inability to perform automatic correction again, and inability of projectors to automatically correct projected images, etc.

Active Publication Date: 2015-07-01
HISENSE
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Problems solved by technology

Although this method does not require a built-in angle sensor, which reduces hardware costs, it still needs to project a predetermined image during the calibration process, making the calibration process more complicated
[0006] To sum up, the current projectors that can automatically correct the projected image need to project some predetermined images during the process of projected image correction, which makes the correction process cumbersome
Moreover, after the correction is completed, if the projected image is deformed during the normal projection process, the projector cannot automatically recognize the deformed projected image because the predetermined image cannot be projected, and it cannot automatically perform correction again unless the projected image is projected. manual intervention
That is, the projectors in the prior art that automatically correct the projected image cannot realize real-time automatic correction of the projected image

Method used

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Embodiment Construction

[0047] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many of the details listed in the specification are only for readers to have a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be implemented even without these specific details.

[0048] As used herein, terms such as "module" and "system" are intended to include computer-related entities such as, but not limited to, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a module may be, but is not limited to being limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and / or a computer. For example, both an applicatio...

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Abstract

The invention discloses a projector and a projection image rectifying method thereof. The projection image rectifying method includes: taking images of a projection area projected on a display screen by the projector through a taking module and obtaining images; determining corresponding geometric rectifying parameters by a rectifying module according to the projection area in the pictures; computing and converting original images to be projected by utilizing geometric rectifying parameters to obtain rectified images; and projecting the rectified images onto the display screen by the projection module. By analyzing the projection area in the images to perform geometric rectifying process or color rectifying process, so that rectifying operation can be realized without preset images with certain features, and process of rectifying projection images is simplified.

Description

technical field [0001] The present invention relates to projection technology, in particular to a device and method for correcting projected images. Background technique [0002] A projector is a projection device used to magnify and display images on a screen, and is now widely used in presentations and home theaters. For example, for conference room presentations and watching movies on a big screen at home by connecting devices such as DVD players. [0003] If the optical axis of the projector is not perpendicular to the screen surface, that is, it is at an oblique angle to the screen surface, it will cause distortion of the image displayed on the screen surface. In order to correct the distorted image, the inclination angle of the projector in the horizontal and vertical directions can be adjusted through the screws under the projector seat to correct the projected image. But this manual adjustment method makes the projector very inconvenient to use. [0004] For this ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N1/387G03B21/00
Inventor 郭大勃李磊彭伟伦
Owner HISENSE
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