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Real three-dimensional display system and method based on space layer-by-layer scanning

A technology of three-dimensional stereoscopic and display systems, which is applied in stereoscopic systems, parts of TV systems, parts of color TVs, etc., and can solve problems such as difficulty in improving display image quality, uneven spatial distribution of three-dimensional voxels, massive three-dimensional data transmission to Problems such as difficulty in rotating the screen

Inactive Publication Date: 2011-05-11
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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AI Technical Summary

Problems solved by technology

The definition of 3D images is limited by the density of LED arrays and affected by the switching time of LEDs. To produce a high-definition volumetric 3D display system, not only is it difficult to increase the density of LED arrays, it is also difficult to transmit massive 3D data to the rotating screen.
At the same time, because the method is limited by the structure of the flat rotating screen, the spatial distribution of the three-dimensional voxels is not uniform, and it is difficult to improve the quality of the displayed image.

Method used

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  • Real three-dimensional display system and method based on space layer-by-layer scanning
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  • Real three-dimensional display system and method based on space layer-by-layer scanning

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Embodiment Construction

[0044] First, follow the figure 1 The system block diagram shown in the system layout, the system effect diagram is as follows figure 2 shown. The computer equipped with data acquisition card is used as the control host to execute the graphics rendering core and the projection control of sliced ​​images.

[0045] (1) Hardware configuration

[0046] The optical projection system uses rasterized display hardware to cooperate with the optical system to realize a high-speed parallel voxel activation scheme. Projection Control Module (i.e. figure 1 The DMD engine shown) is based on DMD Discovery?? 3000 (DMD control chipset produced by Texas Instruments, USA) + ALP-3 control module (a high-speed interface sub-board designed by German ViALUX for Discovery?? 3000). The ALP-3 control module is a Virtex-4 FPGA (Field Programmable Gate Array, field programmable logic gate array) logic control daughter board based on DMD Discovery 3000, which supports XGA (Extended Graphics Array, ex...

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Abstract

The invention discloses a real three-dimensional display system and method based on space layer-by-layer scanning, belonging to a virtual reality three-dimensional display technology. The system comprises a master control host, an optical projecting unit, a control unit of the optical projecting unit, a double helix scanning screen and a motion servo unit. The display method comprises the following steps of: three-dimensional rasterization, sliced image rendering and optical projecting display, wherein the step of three-dimensional rasterization is characterized in that an object is dispersedinto a voxel set by adopting regular sampling grids; the step of sliced image rendering is used for determining a subordination relation between the voxels and a scanning screen of a moment; and at the stage of optical projecting display, a three-dimensional space is scanned out by a rotary screen layer by layer, two-dimensional sliced images which are dispersed by a three-dimensional scene are sequentially projected onto the rotary screen by adopting high-speed digital projecting equipment, and on the basis of a visual persistence effect, the sliced images transformed at a high speed are fused by human eyes and sensed into a continuous and complete three-dimensional image.

Description

technical field [0001] The present invention relates to a true three-dimensional display system based on layer-by-layer scanning of space and a display method thereof, which belongs to an information display technology in the field of human-computer interaction, and is applied to occasions that contain a large amount of spatial volume data and express relatively harsh spatial position relationships , such as virtual simulation, scientific computing visualization, medical imaging, oil and gas exploration, computer-aided manufacturing / design, advertising and entertainment, and other fields. Background technique [0002] Human beings perceive and recognize things in a three-dimensional world. Undoubtedly, spatial thinking and spatial display media are very important to human thinking. Currently commonly used flat-panel displays such as CRT (Cathode Ray Tube, cathode ray tube) displays and LCD (Liquid Crystal Display, liquid crystal display) displays are limited in their express...

Claims

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Application Information

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IPC IPC(8): H04N13/00H04N5/74H04N9/31G06T17/00
Inventor 邢建芳赵晓庚岳健潘文平王冬翠耿征张赵行龚华军沈春林
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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