Virtual Reality演讲PPT课件

1、 制作人: 杨荣庆、许富涵、方阳 History of the development K Key technologyey technology Technology application Obstacles （障碍） Virtual reality technology is a kind of can create and experience the virtual world of computer simulation system.Include simulation environment perception（感知） natural skills sensing devic

2、es（传感）Virtual reality technology evolution history in general can be divided into four stages : The first stage: The sound form of dynamic simulation(1963 years ago) The second stage: Virtual reality shoots(1963-1972) The third stage: Formation of the concept of virtual reality and theory(1973-199)

3、The fourth stage: The perfection and application of virtual reality theory further(1990-2004)Display In a VR system, binocular stereo（双目立体视觉） vision plays a big role. The users eyes to see different images are respectively, displayed in different display.Some system uses a single display, but after

4、users to wear special glasses, one eye can only see the odd frames, another eye sees only the even frame, the difference between odd and even frame is the parallax (视差)is created stereo feeling.Tracking（跟踪） the head movement of the virtual reality headset：Use the head tracking to change the perspect

5、ive of image, the users visual system and can connect between motion perception systemUser can not only through the binocular stereo vision to recognize the environment, but also by the movement of the head to observe the environmentVoice On the horizontal （水平）direction, we depend on the difference

6、of the phase （相位 ）difference and the strength of sound to determine the direction of the sound, because reach the ears of time or distance is different. Stereo effect is on left and right ears hear recorded at different locations of different voice, so there is a sense of directionSensory feedback （

7、感觉反馈）In a VR system ，really the feeling of contact with the glass, and may through the virtual cup surface, and this is not possible in real life VR system In the lining of the gloves can install some vibration（震动 ） contact to simulate the sense of touch.LanguageLanguage In a VR system, voice input

8、and output is also very important. The using of the natural language there are two problems for computer input, the first is efficiency, to facilitate （促进）understanding, computer input speech can be very verbose. Correctness, followed by computer understand voice method is to contrast match, and no

9、ones intelligenceAmusementMilitary（军事）EducationAmusementRich feeling ability and the 3 d display environment makes VR ideal tool of video games:Such as Chicago (Chicago) opened the worlds first large VR entertainment system for many people to use , its theme is about a future war in 3025. MilitarySi

10、mulation training has been an important topic in the study of military and aerospace industry（航天工业）, for the VR provides a broad application prospect.EducationVirtual reality is applied to education is a leap in the development of education technology. It built the environment of autonomous learning

11、Divided into three aspects:Science and technology research（科技研究）Virtual practice base（虚拟实训）Virtual simulation of campus（虚拟仿真校园）Obstacles（障碍，缺点）Not really into the virtual world: Through calculation of the cable（电缆） connected to the equipment, which greatly limits the range of users.How to input is also a big trouble: VR still can not simulate the users handsEasy to let a person feel tired: The ac