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3D Display System

Contact Information

University:  Tsinghua University

Team Member( s):Xu Mohan;  Gao Yongfeng;   Gao yuan;   Yang Hao;    Zhang Qian

Faculty Advisors:Deng Yan

Email Address: xu-mh09@mails.tsinghua.edu.cn

Project Information

Title: 3D DISPLAY SYSTEM

Description:

3D Display System is an interactive 360°stereoscopic display system. This system enabled users to view the stereoscopic image in 360°without glasses. It can display the three-dimensional images of both  virtual and real objects, and create interactive function which allows users  to control the display content by gesture.

Products:

NI Hardware:

PXI 1031 controller, DAQ board

Smart camera NI 1764

NI Software:

LabVIEW ,

Vision Development Module, Vision Builder AI

NI Motion,  Motion Assistant,

Vision Acquisition, DAQmx.

The Challenge:

3D film is a motion picturethat enhances the Optical illusion of depth perception, but we must enjoy it with glasses and limited viewing angle in the cinema. Most of the stereoscopic display systems or 3D TVs  are so expensive to afford and they cannot realize interactive function. In this sense, building an interactive 360°stereoscopic display system without glasses which is cheap and has  the function of Display 3D images both of visual models and real objects is a big challenge. 

The Solution:

3D Display System consists of three parts, that is acquisition, processing and 3D display.

捕获.JPG

Figure 1.  3D Display System

This system also consists of three types of acquisition, such as building visual models, non-real time acquisition of real object by NI 1764 and turntable, real-time acquisition of real object by four USB cameras.

Virtual model

           In this part, we use LabVIEW  to read the virtual 3D model document and set parameters , then show the four images of different directions of the model in one image as the figure 2.2shown , such special image is projected by a projector to an Inverted pyramid optical structure  of  Figure 2.1 as the Schematic of Figure 2.3.

figure 2.png

                                                                                       Figure 2.1                                             Figure 2.2                                                Figure 2.3

                                                                                   

                                                                                                                                                                                         Figure 2 Imaging principle

          Figure 3 and Figure 4 are  Specific examples of three-dimensional display.

_MG_0211 - 副本.jpg

Figure 3 three-dimensional display of virtual model

_MG_0244 - 副本.jpg

Figure 4 three-dimensional display of virtual model

          The program of 3D Display of virtual model is shown in the figure 5.

Figure 5.jpg

Figure 5 program of three-dimensional display of virtual model

Gesture recognition:

       Gesture recognition system  is realized by a USB camera, PXI system,  LabVIEW  and vision assistant. We capture the image sequences of hand and judge its movement ,  such information can be used to control the 3D display, for instance , sliding hand can control the icon rotating , two hands can control the icon zooming as the Figure 6 shown.

figure 6.jpg

Figure 6. Gesture recognition

figure 7.jpg

Figure 7. Find the object in the image by vision assistant

figure 8.jpg

Figure 8. Program of gesture recognition

Non-real-time acquisition

       Non-real-time acquisition system  depends on a smart camera NI 1764 and a turntable controlled by PXI, by putting an object on the turntable and capture its images when its rotating ,we can get the information of this object from all directions. Then choose the right images and show the 3D images.

Figure 9.jpg

Figure 9. Hardware of non-real-time acquisition system

figure 10.jpg

Figure 10.image acquisition

figure 11.jpg

Figure 11. 3D Display of real object

figure 12.jpg

Figure12. Program of non-real-time acquisition system

Real-time acquisition

         We use four USB cameras to realize the real-time acquisition. Thosefour cameras are set around the object and capture the image of this object from four directions.Then process this images and show the 3D image by the optical structure.

figure 13.jpg

Figure13.Interface of real-time acquisition system

figure 14.jpg

Figure14. Hardware of real-time acquisition system

figure 15.jpg

          Figure15. Program of real-time acquisition system

Video of this 3D Display System :

                                                http://v.youku.com/v_show/id_XMjc0MzQ5MTg4.html

Comments
jcallaway
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Hello there,

Thank you so much for your project submission into the NI LabVIEW Student Design Competition. It's great to see your enthusiasm for NI LabVIEW! Make sure you share your project URL(https://decibel.ni.com/content/docs/DOC-16478) with your peers and faculty so you can collect votes for your project and win. Collecting the most "likes" gives you the opportunity to win cash prizes for your project submission. If you or your friends have any questions about how to go about "voting" for your project, tell them to read this brief document (https://decibel.ni.com/content/docs/DOC-16409).

I'm curious to know, what's your favorite part about using LabVIEW and how did you hear about the competition? Nice work with the NI myDAQ!

Good Luck, Jessica in Austin, TX.

轩辕沫沫
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Hello Jessica,

My favorite part about using LabVIEW must be the smart camera NI 1764 and a turntable controlled by PXI, the motion assistant is etremely wonderfu. We have just participated in the Virtual Instrument Competition.In China, and got the top prize, so we were informed about this competition from engineers of NI in China.

Thank you very much about your attention!

Xu MoHan ,Tsinghua University, China

熵熯
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com on!

爷爷
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very funny面白いですね

hanyang19861017@163.com
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oh ,it is very good ,come on innovative ,

magiee
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very charming,so short time,so amzing result,come on

Liss89
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cool. I hope that youn win.... it's so interesting

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