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Projection screen correction method and projection device

A technique of projection equipment and a correction method, which is applied in the direction of using projection device image reproducers, TVs, color TV components, etc., can solve problems such as high difficulty, low debugging efficiency, and tediousness, and achieve low difficulty and improve debugging effects. , the effect of saving system resources

Active Publication Date: 2019-02-26
QINGDAO HISENSE LASER DISPLAY CO LTD
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a projection screen correction method to solve the existing method of frequently debugging the projection equipment to calibrate the projection effect of the projection screen on the screen, which is difficult and cumbersome, so the debugging efficiency is low

Method used

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  • Projection screen correction method and projection device
  • Projection screen correction method and projection device

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Embodiment 1

[0098] The embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0099] Such as figure 1 As shown, an embodiment of the present application is a projection screen correction method, which is executed by a projection device and includes:

[0100] Step 101. Obtain the projection of the physical screen projected on the viewing plane of the camera through the camera;

[0101] Step 102. Determine the rotation parameters and translation parameters of the projection device according to the viewing plane and the projection of the physical screen;

[0102] Step 103, adjust the projection device according to the rotation parameter and the translation parameter of the projection device.

[0103] In step 101, a camera is added to the projection device. The camera can be located at any position of the projection device, for example, it can be located at the top, middle, or bottom of the projection device, as long...

Embodiment 2

[0185] The method for correcting a projected picture according to the embodiment of the present application will be described in detail below.

[0186] Such as Figure 11 Shown is the method for correcting the projected picture in Embodiment 2 of the present application.

[0187] Step 1101 , acquire viewing plane parameter information of the projection device.

[0188] Step 1102: Acquiring the projection parameter information of the physical screen projected on the viewing plane of the camera through the camera.

[0189] Step 1103: Determine the parameter information of the physical screen according to the viewing plane parameter information and the projection parameter information of the physical screen.

[0190] Step 1104, according to the projection of the physical screen on the YOZ plane and the YOZ plane, determine the rotation angle and direction of the projection device around the X coordinate axis, and according to the projection of the physical screen on the XOZ pla...

Embodiment 3

[0196] The method for correcting a projected picture according to the embodiment of the present application will be described in detail below in conjunction with specific examples.

[0197] refer to Figure 12 , is a schematic diagram of a method for correcting projection images according to Embodiment 3 of the present application. For the convenience of explanation, the given Figure 12 In the example, the projection device only rotates an angle around the X coordinate axis, but does not rotate around the Y coordinate axis and Z coordinate axis, nor does it translate along the X coordinate axis, Y coordinate axis, and Z coordinate axis. The rotation angle and direction of the X coordinate axis.

[0198] Wherein, for the convenience of description, the viewing plane MNSR is a square with a side length of 2, the Z coordinate axis is the light emitting direction of the projection lens, the X coordinate axis is the horizontal direction, the Y coordinate axis is the vertical dir...

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Abstract

The present invention relates to the technical field of projection screen display, in particular to a projection screen correction method and projection equipment, which are used to solve the problem of poor debugging effect and difficulty in the existing method of frequently debugging projection equipment to calibrate the projection effect of projection screen on the screen. Large and resource-wasting problem. In the embodiment of the present application, the projection of the physical screen projected on the viewing plane of the camera is obtained by the camera, and the rotation parameters and translation parameters of the projection device are determined according to the viewing plane and the projection of the physical screen, and the rotation parameters and translation parameters of the projection device are determined. parameters, adjust the projection device, so it is only necessary to rotate and translate the projection device according to the determined rotation parameters and translation parameters of the projection device, and then the projection screen projected to the physical screen can be corrected, without frequent adjustments to the projection device Manual debugging reduces the difficulty of debugging the projection equipment, improves the debugging effect and saves resources.

Description

technical field [0001] The present invention relates to the technical field of projection screen display, in particular to a projection screen calibration method and projection equipment. Background technique [0002] The ultra-short-throw projector has a small throw ratio and is very close to the screen, so it can project a large picture, but it also has problems with debugging and installation, that is, a small displacement of the projector can cause serious distortion of the picture. Deformation and offset make it difficult to calibrate the image projected by the projector and the screen, which seriously affects the use effect. [0003] In the prior art, the projection equipment is frequently debugged manually to determine the optimal projection position, but this method is relatively difficult and the debugging is cumbersome, resulting in low debugging efficiency. [0004] To sum up, in the prior art, it is difficult and cumbersome to calibrate the projection effect of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/74H04N9/31
CPCH04N9/3185H04N9/3194
Inventor 王晨星
Owner QINGDAO HISENSE LASER DISPLAY CO LTD
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