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Image distortion correction method for laser projector and laser projector

A laser projector and laser technology, which is applied in the field of laser projectors, can solve the problems of missing pixels and the inability to guarantee the integrity of the overall projection screen, etc.

Active Publication Date: 2019-06-21
GEER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method will result in the loss of some pixels and cannot guarantee the integrity of the overall projected image

Method used

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  • Image distortion correction method for laser projector and laser projector
  • Image distortion correction method for laser projector and laser projector
  • Image distortion correction method for laser projector and laser projector

Examples

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Embodiment Construction

[0026] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.

[0027] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way intended as any limitation of the disclosure, its application or uses.

[0028]Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the description.

[0029] In all examples shown and discussed herein, any specific values ​​should be construed as exemplary only, and not as limitations. Therefore, other instances of the exemplary embodiment ma...

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Abstract

The invention discloses an image distortion correction method of a laser projector, and the laser projector. The method comprises the steps of controlling the laser projector to emit multiple laser emission signals to a projection screen in different emission angles, wherein projection points of the multiple laser emission signals on the projection screen are not on the same straight line; receiving multiple laser reflected signals diffused and reflected by the projection screen; obtaining multiple time differences according to each laser emission signal and the laser reflected signal corresponding to the laser emission signal, and determining, according to the multiple time differences, multiple flying times of the laser from the projector to the projection screen; according to a correspondence between the multiple flying times and the different emission angles, determining a machine body deflection angle of the laser projector relative to the state of the laser projector being opposite to the projection screen; and correcting the emission angle of each pixel projection point according to a reverse angle of the machine body deflection angle. The laser projector is corrected automatically while the image quality is ensured.

Description

technical field [0001] The present disclosure relates to the field of projection technology, and more particularly, to an image distortion correction method for a laser projector and the laser projector. Background technique [0002] When users use a projector, they often encounter the problem that the projector cannot completely face the projection screen (such as a wall or a curtain, etc.). [0003] Existing image distortion correction methods include, for example, optical keystone correction. This method requires the user to manually adjust, and each time the body moves, the user needs to manually adjust again. Another example is digital keystone correction for image correction. This method uses an interpolation algorithm, which affects the clarity of the overall picture. Another example is to perform image correction by using an image cropping method. This method will result in the loss of some pixels, and cannot guarantee the integrity of the overall projected image...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/31G03B21/14
CPCG03B21/147H04N9/3179
Inventor 张金国赵龙光刘云峰
Owner GEER TECH CO LTD
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