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Light-field-imaging-based depth-of-field enhanced type virtual reality display system and method

A technology of virtual reality and light field imaging, which is applied in the field of virtual reality and can solve problems such as three-dimensional depth of field restriction

Inactive Publication Date: 2018-04-20
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the 3D depth of field of this system is severely restricted by the light field imaging system, and the correct display of virtual 3D information can only be realized within a limited depth of field distance.

Method used

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  • Light-field-imaging-based depth-of-field enhanced type virtual reality display system and method
  • Light-field-imaging-based depth-of-field enhanced type virtual reality display system and method
  • Light-field-imaging-based depth-of-field enhanced type virtual reality display system and method

Examples

Experimental program
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Embodiment 1

[0036] This embodiment provides a virtual reality helmet with enhanced depth of field based on light field imaging, such as figure 1 As shown, it includes two groups of imaging modules (including sequential lighting module 1 , light field information display module 2 , eyepiece group 3 and control module 4 ) installed in the support wide frame 5 and a fixed rope 7 . The sequential lighting module is composed of three LED point light sources 11, 12, 13, and the distances from the center of the LED point light sources to the center of the light field information display module are different. The LED point light source emits approximate spherical waves, and the approximate spherical waves illuminate the light field information display module 2 . The light field information display module 2 is composed of a transmissive liquid crystal (LCD) display panel 21 and a lens array 22 . The focal length of the lens array is F, and the LCD display panel is located at 0.1F within one focal...

Embodiment 2

[0041] This embodiment provides a compact light-field imaging-based depth-enhanced virtual reality helmet, such as figure 2 As shown, it includes two groups of imaging modules (including sequential lighting module 1 , light field information display module 2 , eyepiece group 3 and control module 4 ) installed in the support wide frame 5 and a fixed rope 7 . The sequential lighting module is composed of three LED point light sources 11, 12, 13, and the distances from the center of the LED point light sources to the center of the light field information display module are different. The LED point light source emits approximate spherical waves, and the approximate spherical waves illuminate the light field information display module 2 . The light field information display module 2 is composed of a transmissive liquid crystal (LCD) microdisplay 23 and a lens array 22 . The focal length of the lens array is F, and the LCD microdisplay is located at 0.1F within one focal length of...

Embodiment 3

[0047] This embodiment provides a compact light-field imaging-based depth-enhanced virtual reality helmet, such as image 3 As shown, it includes two groups of imaging modules installed in the supporting wide frame 5 (including a sequential lighting module 1, a light field information display module 2, an eyepiece group 3, a half mirror 10 and a control module 4) and Fixed rope 7. The sequential lighting module is composed of three LED point light sources 11, 12, 13, and the distances from the center of the LED point light sources to the center of the light field information display module are different. The LED point light source emits approximate spherical waves, and the approximate spherical waves illuminate the light field information display module 2 after being reflected by the half mirror 10 . The light field information display module 2 is composed of a reflective microdisplay 24 (LCOS microdisplay) and a lens array 22 . The focal length of the lens array is F, and t...

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Abstract

The invention discloses a light-field-imaging-based depth-of-field enhanced type virtual reality display method. According to the method, two imaging channels are used for imaging. The imaging processof each imaging channel is as follows: a plurality of point light sources irradiates a light field information display module formed by a display device and a lens array; a virtual four-dimensional light field image is formed in three-dimensional space; and then the virtual four-dimensional light field image information is magnified by using an ocular lens group. The display device is not at a doubled focal length of the lens array. Under irradiation of point light sources at different position, the display depths of the four-dimensional light field image are different to realize depth-of-field enhanced type light-field-imaging virtual reality display. In addition, the invention also provides a system for realizing the display method. Therefore, problems that the depth of field of the three-dimensional image is limited in the current virtual reality display system, the observer has a visual fatigue problem because of the conflict between focusing and convergence competition, the depthof field control mechanism is complicated, and the response speed is low and the like can be solved; and while the depth of field is increased, the real-time response is realized.

Description

technical field [0001] The invention relates to the field of virtual reality, in particular to a depth-of-field enhanced virtual reality system and method based on light field imaging. Background technique [0002] Virtual reality (referred to as VR), also known as spirit world technology, is an advanced computer human-machine interface with immersion, interactivity and conception as its basic features. This technology uses computer graphics technology, high-resolution display technology, sensor interaction and other technologies to generate a realistic three-dimensional virtual environment. Users use specific input and display devices to realize real-time interaction with the virtual environment, perceive and operate objects in the virtual environment. objects, so as to obtain an immersive experience. Different from the use of augmented reality technology in an open reality environment, the use environment of virtual reality technology is usually an artificially set safe v...

Claims

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Application Information

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IPC IPC(8): G02B27/01
CPCG02B27/0172
Inventor 楼益民胡娟梅
Owner ZHEJIANG SCI-TECH UNIV
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