A virtual reality flight procedure vision system is introduced in this paper. The digital flight map database is established
based on the Geographic Information System (GIS) and high definitions satellite remote sensing photos. The flight approaching area database is established through computer 3D modeling system and GIS. The area texture is generated from the remote sensing photos and aerial photographs in various level of detail. According to the flight approaching procedure, the flight navigation information is linked to the database. The flight approaching area vision can be dynamic
displayed according to the designed flight procedure. The flight approaching area images are rendered in 2 channels, one
for left eye images and the others for right eye images. Through the polarized stereoscopic projection system, the pilots
and aircrew can get the vivid 3D vision of the flight destination approaching area. Take the use of this system in pilots preflight preparation procedure, the aircrew can get more vivid information along the flight destination approaching area. This system can improve the aviator's self-confidence before he carries out the
flight mission, accordingly, the flight safety is improved. This system is also useful in validate the visual flight procedure
design, and it helps to the flight procedure design.
This paper presents a newly developed passive stereo display system. This system is based on normal PC computer, no special designed software and hardware is needed. The only special requirement is the graphics card should have dual video display connectors, that is, the video card has n-view functions. We use nvidia Quadro FX1100 graphics card in our system. We set the whole image resolution to 2048X768. By specially arrange the stereo images in this area, we set one of the screen to display the left image and the others displays the right image, through normal display driver software, we can get the separated stereo image pair displayed on the two screens. Output these two separated stereo pairs on two image projectors, and set a pair of perpendicularity polarizers in front of these projectors, a positive computer stereo image projection system is established. This system has the specification of simple, easy to construct, and hardware independent.
Accompany with the rapid development of computer hardware, software and network technologies, applying virtual reality technique and 3D imaging technique in E-commerce is affordable and practical. This paper mainly focused on setting up a new E-commerce platform based on above techniques. A new method for speed up modeling and texture mapping is introduced.
The computer aided 3D display system, flicker-free field sequential stereoscopic image display system, is newly developed. This system is composed of personal computer, liquid crystal glasses driving card, stereoscopic display software and liquid crystal glasses. It can display field sequential stereoscopic images at refresh rate of 70 Hz to 120 Hz. A typical application of this system, 3D vision test system, is mainly discussed in this paper. This stereoscopic vision test system can test stereoscopic acuity, cross disparity, uncross disparity and dynamic stereoscopic vision quantitatively. We have taken the use of random-dot- stereograms as stereoscopic vision test charts. Through practical test experiment between Anaglyph Stereoscopic Vision Test Charts and this stereoscopic vision test system, the statistical figures and test result is given out.
Compared with several typical field-sequential stereoscopic TV systems, a flicker-free field- sequential stereoscopic TV system compatible with a current PAL system is proposed. Except the frame memory technique, resetting composite sync signal and line interpolation techniques are adopted in this system, therefore, it has the advantage of fine and smooth scanning structure, high vertical resolution, and easy application.