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Method and apparatus for displaying 3D images

一种三维图像、二维图像的技术，应用在图像通信、光学、仪器等方向，能够解决限制性能、色散、图像劣化等问题

Inactive Publication Date: 2012-10-10
HOLOGRAFIKA HOLOGRAMELOALLITO FEJLESZTO FORGALMAZO KFT
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Non-uniform overall intensity or undesired crosstalk is practically unavoidable as these are conflicting requirements; this fact strongly limits the performance of such systems
If the system is not precisely calibrated, severe alignment, dispersion problems can occur which again cause degradation of the perceived image

Method used

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  • Method and apparatus for displaying 3D images
  • Method and apparatus for displaying 3D images

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Embodiment Construction

[0025] The ultimate goal of displays, especially 3D displays, is to reconstruct visible light beams from real scenes, in other words, the goal is to reconstruct 3D light fields as they exist in natural scenes. A light field is the most general representation of 3D information considering a 3D scene as a collection of rays emitted or reflected from 3D scene points. The visible beam is described relative to the surface using the intersection point and transmission angle of the beam with a reference surface, which in a display is the screen. The point of intersection is given as a position on the surface using some parameterization, while the direction is given as a deviation from the surface normal using some angle parameterization.

[0026] When displaying in 3D compared to 2D, there is an additional independent variant: the angle. In two-dimensional display, ideally there is no change at the pixel when viewed from different directions, while in three-dimensional the color and...

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Abstract

A method and an apparatus for displaying 3D images are disclosed. 2D images are projected from multiple points to a surface with narrow diffusion characteristics, thus it is possible to get a 3D light field with arbitrary angular dependence. According to the invention, the projectors (10) do not target particular screen (12) points. The projectors (10) are directed to the screen (12) with no special positioning, however from the bunch of light beams present, pertaining to the large number of pixels in the projected images, it is possible to select and define a pixel-wise precise 3D light-field through a calibration process. A novel calibration method and device are also described for calibrating 3D display systems, the device being equipped with proper image sensor(s) and a control system.

Description

technical field [0001] The invention relates to a method and a device for displaying a three-dimensional image, as well as a method and a device for calibrating the device. Background technique [0002] For example, methods and systems for generating three-dimensional images are disclosed in WO01 / 88598A2 and WO2005 / 117458A2, the teachings of which are incorporated herein by reference. Known devices include multiple optical modules that project light beams onto a diffuse screen, so that under proper control, light beams of different colors and intensities propagate from each point of the screen to reconstruct a three-dimensional light field. When the viewer changes her / his position in the three-dimensional light field, the perceived three-dimensional image changes accordingly, thereby providing a real-life effect of true three-dimensionality. [0003] However, in changing the position of the viewer in the three-dimensional light field, depending on the physical alignment of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N13/00G02B27/22G02B30/27
CPCH04N13/0425H04N13/0459G02B27/2214G02B5/0284G02B5/0257G02B5/0278H04N13/327H04N13/363G02B30/27
Inventor 蒂博尔·鲍洛格
Owner HOLOGRAFIKA HOLOGRAMELOALLITO FEJLESZTO FORGALMAZO KFT
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