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Projected image trapezoid calibration method based on naked eye 3D helmet display and 3D helmet

A calibration method and a technology for projecting images, which are applied in the field of image processing, can solve problems such as the complexity of the calibration process, differences, and the inability to design instruments and equipment for helmets, and achieve the effect of solving trapezoidal distortion and improving the sense of experience

Pending Publication Date: 2019-03-29
FUTURE TECH XIANG YANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Naked-eye 3D helmets in related technologies often need to be calibrated with the help of complex instruments and equipment. In this way, on the one hand, it is impossible to design too complex instruments and equipment in a helmet with a small space, and on the other hand, it will increase the cost of calibration, and the calibration process more complicated
If the user judges whether the calibration is the target image based on the user's subjectivity, each person's observation ability and evaluation judgment are different, which will also lead to huge differences in the calibration results.

Method used

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  • Projected image trapezoid calibration method based on naked eye 3D helmet display and 3D helmet
  • Projected image trapezoid calibration method based on naked eye 3D helmet display and 3D helmet
  • Projected image trapezoid calibration method based on naked eye 3D helmet display and 3D helmet

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Experimental program
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Embodiment 1

[0028] Please refer to Figure 1 to Figure 3 , The present invention provides a method for calibrating the trapezoid of projected images based on a naked-eye 3D head-mounted display, including a projector, an optical medium, a camera, a processor, a coordinate converter, and a picture comparator. The calibration steps are as follows:

[0029] The projector projects a monochromatic original image to the optical medium; in this implementation method, the original image is a pure green rectangular image. Afterwards, the original image will undergo vertical trapezoidal distortion on the optical medium.

[0030] The optical medium is a transparent or translucent display medium. Preferably, in this implementation manner, the optical medium is a half mirror.

[0031] The camera takes pictures of the graphics projected on the optical medium to generate a sampling image; preferably, the orthographic projection of the camera onto the optical medium falls on the geometric center of th...

Embodiment 2

[0044] This embodiment provides a 3D helmet for trapezoidal calibration using the projected trapezoidal calibration method of Embodiment 1. The 3D helmet includes an optical medium, a projector, a camera, a processor, a coordinate converter and a picture comparator. Wherein, the projector and the camera are arranged opposite to the optical medium, the processor is connected to the projector and the camera respectively, and the coordinate converter is connected to the projector and the processor respectively. device connection.

[0045] It should be noted that the above connection manner may be an electrical connection or a communication connection.

[0046] Compared with related technologies, the present invention's trapezoidal calibration method based on naked-eye 3D head-mounted display projection images calculates the base angle parameter θ of the sampled image and brings the base angle parameter θ and the coordinates of each pixel point of the original image into the pres...

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Abstract

The invention provides a projected image trapezoid calibration method based on a naked eye 3D helmet display. The method comprises the following steps of: providing a projector and an optical medium,and enabling the projector to project a monochromatic original image to the optical medium; providing a camera, and enabling the camera to carry out shooting on a graph projected on the optical mediumand generate a sampled image; providing a processor and enabling the processor to calculate a base angle parameter theta of a vertical trapezoid of the sampled image by adopting an image processing technology; and providing a coordinate converter, enabling the coordinate converter to sample coordinates of each pixel point in the original image, taking the coordinates and the base angle parametertheta into a preset formula, and by changing the coordinates, generating an anti-distortion image. Compared with the related art, the projected image trapezoid calibration method provided by the invention can effectively solve a problem of trapezoid distortion of a projected image of the naked eye 3D helmet display. Meanwhile, the invention provides a 3D helmet for the projected image trapezoid calibration method based on the naked eye 3D helmet display.

Description

【Technical field】 [0001] The invention relates to the technical field of image processing, in particular to a method for calibrating a trapezoid based on a naked-eye 3D head-mounted display projected image. 【Background technique】 [0002] With the development of science and technology, the scope of application of projection equipment has been continuously expanded, from the commercial office field to the field of education, learning and family life. As an emerging product that has appeared in recent years, 3D helmets are loved by a large number of users because of their strong sense of immersion in movies, games, etc., and have gradually entered people's daily lives. [0003] However, it is unavoidable that the 3D helmet will more or less have trapezoidal distortion of the projected image during imaging, which seriously affects the user's viewing and gaming experience. Scientific research has found that the main problem causing image trapezoidal distortion is that the proje...

Claims

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Application Information

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IPC IPC(8): G02B27/01
CPCG02B27/0172G02B2027/011G02B2027/014G02B2027/0138Y02D10/00
Inventor 贺曙张关平
Owner FUTURE TECH XIANG YANG CO LTD