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Method for correcting geometric distortion of projected image on curved curtain

A technology of projected images and geometric distortion, applied in image communication, optics, instruments, etc., to achieve realistic and immersive image effects

Inactive Publication Date: 2005-11-02
SHANGHAI SCI & TECH MUSEUM
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for correcting the geometric distortion of the projected image on the curved screen for the above-mentioned three-dimensional animation, the shortcomings of the nonlinear distortion of the projected image appearing on the curved screen

Method used

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  • Method for correcting geometric distortion of projected image on curved curtain
  • Method for correcting geometric distortion of projected image on curved curtain
  • Method for correcting geometric distortion of projected image on curved curtain

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Embodiment Construction

[0031] see Figure 4 as shown,

[0032] The correction method of the present invention for the geometric distortion of the projected image on the curved screen comprises the following steps:

[0033] a, Layout setting point

[0034] Arrange evenly distributed positioning points on the curved screen, and establish a central positioning point;

[0035] b. Crosshair correction

[0036] Use the projector to project the crosshairs to the curved screen, so that the center point of the crosshairs is aligned with the central positioning point;

[0037] c, horizontal line correction

[0038] Use a projector to project several horizontal lines to the curved screen, so that each horizontal line coincides with the horizontally arranged positioning points on the curved screen;

[0039] d, vertical line correction

[0040] Use a projector to project several vertical lines onto the curved screen, so that each vertical line coincides with the vertically arranged positioning points on th...

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Abstract

The invention discloses a correction method for geometric distortion of projection image on curve screen. Set location points of even arrangement on curve screen and determine a center location point; project reticle by projector to screen and center their center points; project some horizon lines to screen, every horizon line is superposition to location points of horizon arrangement; it is similar for the vertical lines and points of vertical arrangement. The method can correct the nonlinear distortion image well; image effect is true to nature; observer with stereoscope can feel virtual stereo scene like standing in real world; the immerse feeling is strong.

Description

technical field [0001] The invention relates to image processing of three-dimensional animation, and more specifically refers to a method for correcting geometric distortion of projected images on curved screens. Background technique [0002] As one of the image display technologies for simulating real-life scenes, 3D animation is a relatively high-end technology. 3D animation is different from ordinary 3D animation. While the display effect is realistic, the display technology is also relatively complicated. Through multi-channel video output and programming, please refer to the figure 1 As shown, through the conversion box 1 and the stereo projector 2, the screen 3 is a curved screen, and the viewer can watch the animation effect with a strong depth of field by wearing special three-dimensional stereo glasses (polarizers). As a high-end image display, 3D animation is suitable for urban design, park planning and achievement reporting. [0003] In the application of visual...

Claims

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Application Information

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IPC IPC(8): G02B27/22
Inventor 许永顺胡学增梁兆正王吉良
Owner SHANGHAI SCI & TECH MUSEUM
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