all about virtual reality & oculus rift
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ALL ABOUT Virtual Reality & OCULUS RIFT
WHAT IS VIRTUAL REALITY? Virtual Reality refers to a high-end user interface that involves real-time simulation and interactions through multiple sensorial channels.
Virtual Reality means feeling an imaginary (virtual) world, rather than the real one. The imaginary world is a simulation running in a computer. The sense data is fed by some system to our brain.
Virtual Reality allows a user to interact with a computer-simulated environment, be it a real or imagined one.
HISTORY OF VIRTUAL REALITY1950s visionary cinematographer Morton Heilig built a single user console calledSensorama. This enabled the user watch television in three dimensional ways.
In 1961, Philco Corporation engineers developed the first HMD known as theHeadsight.
It was in 1965 IVAN SUTHERLAND envisioned what he called the UltimateDisplay.In 1988, commercial development of VR began.In 1991, first commercial entertainment VR system "Virtuality" was released.
DEVICES USED IN VIRTUAL REALITY HEAD MOUNTED DISPLAY (HMD)
CAVE AUTOMATIC VIRTUAL ENVIRONMENT (CAVE)
ApplicationsEducation & Training - Driving simulator - Flight simulator- Ship simulator- Shooting simulator
ApplicationsMovies - Virtual reality is applied in 3-D movies to try and immerse the viewer into the movie and/or virtual setting and environments.
Video Games - Virtual reality is evident in video games. Now you can physically interact with a game by using your body and motions to control characters and other elements of the game that years ago people would only imagine.
Education and training Training and education is done through virtual reality because it can prepare you for many dangerous jobs and put the worker in real scenarios without the risk of them being hurt. Doing this enables them to fully train and educate themselves in almost any situation possible so that theyre ready and well equipped for the job. Virtual reality can give them the experience they need without actually putting them or others in danger.
Virtual reality is being used in a number of ways by the business community which include:Virtual tours of a business environment.Training of new employees.A 360 view of a product.
Virtual reality environments have been used for training simulators. Examples include flight simulators, battlefield simulators for soldiers,paratrooping.
VIRTUAL ENVIRONMENTS Beginning with flight simulators, advancing through scientific applications, and into the entertainment arena, virtual environments have been developed to provide an immersive simulated experience without the expense and risk associated with the real thing.Boeing 787 Flight Simulator from Alteon
Molecular Simulation at Argonne National Laboratory
Engineering and Design:VR is widely used in engineering and designing process.It gives better understanding of the design and facilitates changes wherever necessaryIt helps to reduce the time and cost factor.Examples: Building construction, car designing.
Medical:Healthcare is one of the biggest adopters ofvirtual realitywhich encompasses surgery simulation, phobia treatment, robotic surgery and skills training.VR finds its application in nursing, dentistry, health issues for the disabled.
Entertainment:The entertainment industry is one of the most enthusiastic advocates of virtual reality, most noticeably in games and virtual worlds.Virtual Museum, e.g. interactive exhibitionsGamingVirtual theme parks
Advances in digital photography and stereoscopy have enabled filmmakers to affordably produce 3D films and theatre owners to affordably show them.
A 3D digital camera records video, circularly polarizing the right viewpoint using right-handed polarization......while recording the left viewpoint using left-handed circular polarization.Both images are projected simultaneously onto the theatre screen, in a manner that guarantees that the viewpoints are synchronized.The moviegoer wears polarized glasses that only allow the right-handed polarized images to pass through the right lens and the left-handed polarized images to pass through the left lens.
VERGENCE VS. ACCOMMODATION
Projecting a 3D image onto a 2D screen or television display tends to play tricks with ones visual perception.
In the real world, when a person tries to focus on a distant object, the eyes experience vergence, where they both rotate on their own vertical axes until they both point at the object.Meanwhile, the eyes experience accommodation, where they reflexively focus on the object in its distant position, causing nearby objects to go out of focus.
With 3D images, however, the eyes rotate so they are pointed to where the object seems to be, but the reflexive focus must adjust to the screens actual location, eliminating the natural blurring of nearby objects.This results in serious eyestrain and headaches for many 3D audience members.
Oculus RiftOculus Rift was invented by a virtual reality enthusiast named Palmer Luckey.The Oculus Rift is a virtual reality head mounted display, being developed by Oculus VR, a division of Facebook.The Oculus Rift is a virtual reality headset that lets players step inside their favorite games and virtual worlds.
How it worksIt uses a 7 inch LCD display screen with a resolution of 1280 by 800 pixels.Screen is divided into 640 by 800 pixels per eye, with a fixed distance between lens centers.User can view the screen through two lens cup.
How it worksBack view of Oculus Rift.
Head-Mounted Display(Coated in white markers)Camera(Tracks markers to record users head position)Head StrapsCircuit BoardScreenDiopter Adjustment(Rotate to fine tune so eyeglasses arent needed)Lenses(Three pairs are provided to accommodate good, moderate, and heavy nearsightedness)Foam Padding(Fits to face)
How it worksA control box is used to hook the headset up to your computer.Control box includes HDMI port, mini USB port, DVI pot and DC power connection port.Control box also contains five buttons for controlling contrast, brightness and power.
How it worksControl box.
Developer VersionIn August 2012, Oculus announced the "dev kit" version of the Oculus Rift.In March 2014, Oculus announced the upcoming Devkit 2 (DK2) which they expected to begin shipping in July 2014.
Consumer VersionA consumer version of the Rift is in development, which will be aimed at a general market and feature improved components.Improved positional tracking, higher resolution, and wireless operation are some of the features under consideration.
THE OCULUS RIFT EXPERIENCE
ProblemsResolution is currently too low.Not glasses friendly yet.Heavy weight design.Users experiences motion sickness.
SIMULATOR SICKNESSEfforts to make VR Simulations as realistic as possible frequently have unpleasant side effects.
For example, providing a visual headbob (like the one illustrated at right), without an accompanying physical motion, can result in motion sickness and nausea.Similar problems tend to occur with rapid changes in acceleration and rapid shifts in perspective.
BALANCE & THE INNER EARThe semicircular canals within the inner ear contain hair cells that react to body movements.
These reactions are transmitted by means of the vestibular nerve to the brain, which subconsciously sends messages to the bodys trunk and limbs to maintain balance. When the eyes send the brain a different message regarding the bodys movements, the brain may react adversely, causing a loss of balance.
VR LATENCYWhen the VR systems processing time is excessive, its reactions to the users actions will lag behind, which destroys the illusion of immersion when it becomes noticeable to the user.
Latency is particularly problematic in augmented reality applications, where virtual objects are overlaid on the users real world setting, since the virtual and the real should ostensibly be interacting.
VR HEADSETSOculus RiftCarl Zeiss CinemizerSilicon Micro Display ST1080Sony HMZ-T2640x800 Resolution870x500 Resolution1920x1080 Resolution1280x720 Resolution90 Horizontal FOV30 Horizontal FOV39 Horizontal FOV45 Horizontal FOV13.4 Ounces4.2 Ounces6.3 Ounces11.6 Ounces7 Diagonal Display0.39 Diagonal Display0.74 Diagonal Display0.7 Diagonal DisplayLiquid Crystal DisplayOrganic Light-Emitting DiodeLiquid Crystal on SiliconOrganic Light-Emitting Diode$300$749$799$894
FACEBOOK PAYS $2 BILLION FOR OCULUSOur mission is to make the world more open and connected. For the past few years, this has mostly meant building mobile apps that help you share with the people you care about. We have a lot more to do on mobile, but at this point we feel we're in a position where we can start focusing on what platforms will come next to enable even more useful, entertaining and personal experiencesAfter games, we're going to make Oculus a platform for many other experiences. Imagine enjoying a court side seat at a game, studying in a classroom of students and teachers all over the world or consulting with a doctor face-to-face -- just by putting on goggles in your home.This is really a new communication platform. By feeling truly present, you can share unbounded spaces and experiences with the people in your life. Imagine sharing not just moments with your friends online, but entire experiences and adventures.Mark ZuckerbergMarch 25, 2014
Googles response to the $350 Oculus Rift Developers Kit is this do-it-your