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Interaction in virtual reality

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Peng Chen

on 4 November 2012

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Transcript of Interaction in virtual reality

2000 1975 presented by Interactions in virtual reality History of Virtual Reality Technology and implementation Applications of Virtual Reality Virtual world Immersion Sensory feedback Features Interaction The content of virtual reality.

Imaginary or real world

Defining rules Physical immersion Mental immersion Body senses involved. Eg, haptic, visual

Get information. Eg, location

Full body immersion vs some senses only Not differentiable from really world

Not mandatory Unique feature
input(command virtual reality)
Actions such as position, movement
Output (obtain the feedback)
by participants’ senses. Manipulation Change the objects or environment in VR Navigation Change viewpoint Participants communicate among themselves through VR Person to person 1960 1965 1960 1980 1985 1990 1995 1961 1965 1966 1979 1986 1992 1999 (cc) image retrieved from http://www.medienkunstnetz.de/works/sensorama/ Morton Heilig built the Sensorama, an early Virtual Reality Device. Philco Corporation engineers, Comeau and Bryan, built the first Head Mounted Display (HMD) which they called Headsight. Ivan Sutherland introduced his concept of the Ultimate Display at the International Federation for Information Processing (IFIP) Congress. (cc) image retrieved from http://en.wikipedia.org/wiki/File:Ivan_Sutherland_at_CHM.jpg Dr. Ivan Edward Sutherland The Sensorama Ivan Sutherland built a prototype of his Ultimate Display which was dubbed The Sword of Damocles. The Sword of Damocles (cc) image retrieved from http://design.osu.edu/carlson/history/lesson17.html 1981 Dr. Gray Grimes developed the more widely used Grimes’ Digital Data Entry Glove at AT&T Bell Labs. (cc) image retrieved from http://design.osu.edu/carlson/history/lesson17.html Grimes' Digital Data Entry Glove An early Augmented Reality HMD, called the Super Cockpit, was built (cc) image retrieved from http://www.hitl.washington.edu/people/tfurness/supercockpit.html The CAVE (Cave Automatic Virtual Environment) System is unveiled. (cc) image retrieved from http://electronics.howstuffworks.com/gadgets/other-gadgets/VR-gear2.htm The CAVE (Cave Automatic Virtual Environment) System History of Virtual Reality General introduction How the ideas are being developed Virtual Reality and Interaction implement Software & Hardware Data Input/output Rendering engine Rendering Engine Tactile Input Device & Dataglove Display devices Display devices Data gloves i.e. head mounted device and surround screen device “In computer graphics, rendering is the process
by which an abstract description of a scene is
converted to an image.”
(Crockett, 1997, p819) Military Military Scientific Visualization Medical Scientific Visualization Military Virtual Reality Training Simulations are widely used in the military for training personnel in the use of land, sea and air vehicles, as well as on the ground battlefield simulation. Augmented Reality Headsets can be used to provide information to soldiers in the field and are currently being used by the air force. Medical Virtual Reality has been used to provide exposure therapy for patients facing certain phobias and other psychological conditions. Scientific Visualization Certain concepts and data in the various fields of science are hard to represent through traditional means. Many fields, including physics, biology, chemistry, etc. use Virtual Environments to store and share scientific data. http://static.neatorama.com/images/2007-05/cave-3d-visual-genomics.jpg http://www.engineeringchallenges.org/File.aspx?id=11019 http://os.typepad.com/my_weblog/images/cave.jpg http://www.scienceclarified.com/images/uesc_10_img0596.jpg http://msnbcmedia4.msn.com/j/msnbc/Components/Photos/070112/070112_virtual_reality_hmed_8a.grid-6x2.jpg http://img.tfd.com/cde/_GLOVE.GIF Image retrieved from http://science.howstuffworks.com/virtual-military2.htm Molecular Rendering age retrieved from https://wci.llnl.gov/codes/visit/gallery.html Why VR could be improved
from what it is now
(in the future) Virtual Reality depends on a lot of technology and computer technicalities to be implemented.
As technology improves, the corresponding technologies that VR utilizes will help VR to be more “real” to users and also more interactive. http://www.youtube.com/ watch?v=Y-P1zZAcPuw advantages and disadvantages of VR Advantages Disadvantage User-friendly- It does not require one to be a technical expert in Virtual Reality to use the system

Has many applications

High level of interaction Relatively high Cost

Current technology and computational power is not powerful enough to effectively implement in terms of hardware and software. http://perspectives.3ds.com/wp-content/uploads/Firsthand_04bis.jpg http://www.saraproft.org/wp-content/uploads/active_worlds.jpg http://blog.kenperlin.com/wp-content/uploads/2010/11/vr-training.jpg Data Processing
Data Presenting Concentric Mosaic “It is constructed by capturing vertical slit images
when a camera is moving around a set of concentric circles.”
(Shum, Ng and Chan, 2000, p644) Head mounted device
Surround screen projection http://static.ddmcdn.com/gif/virtual-reality-8.jpg http://bp2.blogger.com/_zOr5MgW9P3w/R1SKsPsgZKI/AAAAAAAAAAM/plfX9vwlDIw/s320/virtual_reality_inside_ball.jpg http://cgcookie.com/blender/2012/04/06/rendering-a-sports-car-in-blender-cycles-part-01/ http://research.microsoft.com/en-us/um/people/jinl/paper_2000/acm00_cmosaic.htm http://research.microsoft.com/en-us/um/people/jinl/paper_2000/acm00_cmosaic.htm http://www.hhi.fraunhofer.de/de/departments/image-processing/immersive-media-3d-video/depth-estimation-view-synthesis/image-cube-trajectory-analysis-ict-analysis/ http://electronics.howstuffworks.com/gadgets/other-gadgets/virtual-reality.htm http://cdn3.techworld.com/cmsdata/slideshow/3400143/03_virtual_reality_thumb555.jpg http://www.doolwind.com/images/blog/virtual_reality_helmet.jpg#virtual%20gaming%20468x335 http://www.gearfuse.com/wp-content/uploads/2007/09/insense-goggles.jpg http://www.redorbit.com/images/pic/30181/contact-lenses-with-circuits-image-3/ http://www.vrealities.com/5dt.jpg http://www.vis.uni-stuttgart.de/typo3temp/pics/4896afe012.jpg http://www.senztech.cc/ckfinder/userfiles/images/CyberGlove%20Systems%20Cyberglove_1.jpg http://www.5dt.com/products/images/hw_data_glove_wireless_01.jpg http://i.telegraph.co.uk/telegraph/multimedia/archive/01530/shadow-glove_1530594i.jpg Why is VR a great idea The power to create Why is VR a great idea Why is VR a great idea Why is VR a great idea Why is VR a great idea Unbelievably lifelike http://www.buzzle.com/img/articleImages/349699-47425-16.jpg http://www.guitar-hands.com/cms-assets/images/972343.hand.png http://upload.wikimedia.org/wikipedia/commons/thumb/f/fb/Ventral-dorsal_streams.svg/300px-Ventral-dorsal_streams.svg.png Physical mental Immersions Sensory feedback Aural Feedback Visual Feedback Haptic Feedback High interactivity Collaborative environment http://toprunningshoes.blog.com/files/2012/02/116223-magic-marker-icon-sports-hobbies-people-man-runner.png http://www.builttosell.com/wp-content/uploads/2011/09/brain-300x263.png http://www.mechatronictips.com/2008/10/565/technology/motioncontrol/the-cutting-edge-of-haptic-research/ http://www.aafp.org/afp/2005/0715/afp20050715p279-f4.jpg http://www.onlypencil.com/images/eyefinal2.jpg Problems faced before Virtual Reality:

In the past, simulation was only possible by using raw material to try to create a real environment for staff to practice on.

Two of the many aspects of the society that require simulation of some sort for training were the healthcare faculty and the military force. Hence, the main problem was safety as training seem to pose some kind of risk to parties. However, with virtual reality, this problem can be easily solved.

Virtual reality however, does not only solve this problem, but brings about more benefits to us.

But first, let us get a brief idea on the
history of virtual reality. Chen Peng
Woo Wei Hao Sherman
Rahul Malhotra
Xu Chong
Sreyashi Dasgupta Stryker Armored Vehicle Training Simulator Star Formation in a Galaxy Simulator Image retrieved from http://en.wikipedia.org/wiki/File:Star_formation.jpg The term, Virtual Reality was popularised by Jaron Lanier in 1987 1987 Virtual Reality Therapy for Agoraphobia: A Comparative Trial by Macquarie University
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