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  • Wed 15 Oct 2008

    StarCAVE, a new type of CAVE

    Published at 17:34   Category VR Displays  

    The California Institute for Telecommunications and Information Technology (Calit²) has built a new type of CAVE, the third generation is a diamond shaped CAVE !

    It was conceived by Tom DeFanti and Daniel J. Sandin (with others, see at the end of article), creators of the first CAVE, with 5 sides and each side has 3 screens. If you add the floor, it makes 16 screens !! (Nice video)

    starcave_defanti_250.jpg

    starcave_proteins_350.jpg

    The room operates at a combined resolution of over 68 million pixels - 34 million per eye - distributed over 15 rear-projected walls and two floor screens. Each side of the pentagon-shaped room has three stacked screens, with the bottom and top screens titled inward by 15 degrees to increase the feeling of immersion

    (…)

    At less than $1 million, the StarCAVE immersive environment cost approximately the same as earlier VR systems, while offering much higher resolution and contrast.

    (…)

    Among the VR room’s other features, it is wheelchair accessible, and it was designed to withstand earthquakes. One of the StarCAVE’s five walls (along with its six projectors, three screens and three computers) rolls back on steel rails to provide access for users into the space, and the wall rolls back into place to provide the full 360-degree, immersive VR experience.

    (…)

    A research paper about the design and construction of the StarCAVE appears in the current issue of the Elsevier journal, Future Generation Computer Systems (FGCS), and is available online at ScienceDirect. DeFanti’s co-authors on “The StarCAVE, a Third-Generation CAVE and Virtual Reality OptIPortal,” include Calit2’s Gregory Dawe, Jurgen P. Schulze, Peter Otto, Javier Girado, Falko Kuester, Larry Smarr and Ramesh Rao (all at UC San Diego), as well as Daniel J. Sandin of the University of Illinois at Chicago’s Electronic Visualization Lab (EVL), and Javier Girado (now at Qualcomm, Inc.).

    Appart from regular high-end research, it seems they also want to improve everyday life applications (like e-mail) usage in a CAVE!

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    Thu 28 Aug 2008

    Miele creates everyday objects with its CAVE

    Published at 9:25   Category VR Applications  

    Miele, a german “manufacturer and supplier of washing machines, ovens, vacuum cleaners, and refrigerators”, is now using a CAVE to design and prototype some of its products. This article from Gizmag has a story about it :

    By means of a cluster of nine high-performance processors, this allows for real time adjustment of the image detail and the image perspective to the user’s position. The 6.7 million pixels of the images are recalculated up to 30 times per second. Products and processes not yet existing in reality can thus be visualised, complex situations can be experienced intuitively and better comprehended. (…)

    “The number of expensive, physical models and prototypes can be radically reduced by CAVE, and this ultimately saves a lot of time and money”, says Andreas Enslin, Miele’s senior designer. “Furthermore, the development process is significantly accelerated. After all, as designers, we are working in 3-D anyway. The new technology enables us to immediately discuss the different proposals and ideas with our colleagues from Engineering or Marketing and try things out.”  (…)

    The Miele CAVE system cost the company around 1.6 million Euros and uses eight high-resolution cinema projectors with a luminance of approx. 7,000 ANSI lumen for each project perspective, polarised semi-images from behind to a huge, 15 metre projection screen of black glass. The screen is split into three sections and suspended at an angle of 120 degrees so that no distortion results by the deformation of the glass due to its own weight. Four head tracking cameras keep track of the viewer’s movements and transmit this information to a processor cluster of nine work stations. (…)

    While the product development and design cycle has so far been a long sequence of design decisions and corrective actions, a whole package of decisions can now be processed efficiently says Enslin: “CAVE creates a quite different form of communication and cooperation. Marketers, designers and engineers can now deal with one issue simultaneously. Regardless of what comes up with me as a designer or engineer, I am able to immediately try it and see if it works. As everyone is seeing the same thing, those people who are not directly involved in the process of development and construction can also immediately see the consequences and effects of decisions.“

    This is accomplished to the extent that the Miele devices in the future will also be tested for their serviceability: You can take, for example, a virtual tool and see whether e.g. the required screws can be accessed. Defects can be correspondingly corrected directly at the computer.

    The speed gained is also expected to increase the willingness to experiment, Miele’s senior designer believes. “In this respect, our innovative strength will also increase. It has become much easier to try out something crazy in between.” Basically, of course, the standard remains that the Miele design has to express the premium character of the products. Andreas Enslin: “Our good reputation is essentially determined by our design. This has always been so and will remain this way. We are simply improving now.”

    Although it’s not technically a cave (there should at least be a floor), it’s certainly nice to see that VR is spreading steadily into new business areas.

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    Wed 27 Aug 2008

    VisionaiR 3D : Interview

    Published at 11:15   Category VR Applications, VR Displays  

    VisonaiR 3D is a company from the Netherlands, founded by Maarten van Grinsven in 2000.

    Their goal ?

    “From the start of forming my company I had the goal to bring VR  to the general public (instead of Universities, oil & gas, military) and in reach of “normal” businesses like real-estate agents, project developers and marketing companies.”

    Yeah, “VR For All” as we like it here =)

    Panoramic view of the VisionaiR 360°

    Their latest product is the VisionaiR 360°, a cheap Cave-like system without any tracking. Check the video to get the idea.

    “The VisionaiR 360 was designed for users that have little to no experience with VR, this way anyone can use it.

    The VisionaiR360 is a turn key system; the software is designed specially for the hardware and requires no knowledge from the user to start or operate, other than selecting a virtual reality presentation from a menu. The 360 degree system has many practical advantages over desktopVR :
    - Easy navigation, (just turn around the table and move the joystick the direction you want to go.) No additional explanation needed
    - Keep your orientation during a presentation
    - Feel immersed, it’s like you are really there! “

    Maarten was kind enough to answer some questions :

    - What’s the price range of this product ?

    I don’t have a sale price at the moment, But I’m working on it. I will know more about this in about a week or 2. We are trying to make it cheap enough to bring cave systems in reach of a whole new market. Renting price will be around 150 euro a day (with a minimum renting time for 4 months). At the moment it will only be avalible for rent in the Benelux and germany. Sales worldwide.

    - How much time does it need to be  setup ?

    It will take us 2 days to setup the system, and we will need a room that’s 4×4 meters and 2.30 meter high.

    - What kind of software are you using ?

     The software we use is Quest3D and we develop our own applications for the VisionaiR360 to deliver a turn key solution to our customers. We develop the
    VR applications in combination with architectuurproducties which is a Dutch company specialised in making 3d models.

    - Do you plan to have it evolve, with stereoscopic displays and 3d trackers?

    Yes there is room for a lot of improvement. but keep in mind that this system was created specially for people that have no experience with VR and
    that we use our VR a lot for product presentation in the sales sector (usually we try to sell houses that still have to be built). Too much
    immersion is sometimes too much.

    I have a lot of experience with VR systems. And I know that Stereoscopic images and headtracking can be “stressful” for the inexperienced user. The
    fact that this system doesn’t use a tracking system makes it less bound to a single user experience. when seated down people will automatically be in or
    near the “sweet spot”. The system is still impressive but not overwhelming for the user.
    But don’t get me wrong, there will be a HD version and a stereoscopic version coming at a later time.

    - From the video it seems the calibration is a bit loose on the seams, can you improve on that?

    Calibration is loose but this will improve as soon as we will use software to extra calibrate the projectors. you could also  loose all the distortions
    if you would have a 6×6 meters wide room and use different projectors, making HD and stereoscopic a possibility. I will leak more info about these
    systems when they will become available.

    - How did your company start?

    Wow now that’s a big one.
    Well in 1998 I dropped out of school when I was 19 years old to start  working for a game development company in Belgium called Larian Studio’s. I was using shutterglasses and the Iglasses HMD as a hobby then. Then QuakeIIIArena came out and I thought computer graphics where ready for realistic VR.  In the year 2000 I started my own company called VisionaiR 3D.

    I sold Stereoscopic projection systems to the university of Leuven (Belgium) and the university of Zürich (Switzerland). From the start of forming my company I had the goal to bring VR  to the general public (instead of universities, oil & gas , military) and in reach of “normal” businesses like real-estate agents, project developers and marketing company’s.

    To do this successfully I knew I had to deliver a complete system of both software and hardware combined with the presentation of the VR software itself. I created a transportable 3D projection system and toured around the country for a couple of years (actually I still do this). At the moment I’m even selling 3D projection systems to real-estate agents, they use VR on a
    daily basis.

    Our software usually uses a typical quake style mouse keyboard combo control scheme. This is easy to learn but a lot of people that want to buy a house
    at the moment are not so familiar with playing 3D shooters. They can use the mouse to look around and they can move the camera position with the
    keyboard, but inexperienced users have a hard time controlling both at the same time.

    This is why my latest system the VisionaiR360 uses a different setup like normal cave systems. by creating a 360 view of the environment, the user no longer has to focus on camera rotation (they just rotate themselves, and keep their orientation in the VR environment) and only have to deal with camera position (forward, backwards and strafe left right) making the software more easy to use.

    When the system is not rented it is available to the public in our new showroom in Tilburg (The Netherlands)

    So if you pass near Tilburg, you know where to go!

    Thanks to Maarten for taking the time to answer the interview.

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    Tue 15 Apr 2008

    Laval Virtual 2008 - Tradeshow

    Published at 13:40   Category Virtual Reality  

    This year Laval Virtual was celebrating its 10th anniversary.

    The tradeshow is getting bigger and there was not enough room for all the exhibitors that wanted a booth!

    There was not many technical innovations, rather evolutions of existing principles. This tends to prove the point I was trying to make last year that we are not making the best out of the current hardware.

    There were much less HMDs than last year as if non intrusive displays (eg autostereoscopic screens or projectors) were preferred.

    I’ll probably make another post concerning the new hardware I’ve seen here and at IEEE VR later.

    Read on for more …

    Read more…

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    Tue 22 Jan 2008

    State of VR - Displays

    Published at 22:06   Category Uncategorized  

    Updates

    [ 23 Jul 2008 : Added Workbench and Cave videos]

    Index

    - Projectors based

    - HMD, VR Goggles

    Projectors Based

    The most impressive and immersive is the Cave system (also called SasCube, Move, Cube…). It’s a cube of at least 3×3x3m with at least four faces displaying stereoscopic images. The Cave at Iowa State University has just been upgraded and now has a resolution of 100 million pixels, featuring 96 GPUs and 24 Sony digital projectors.

     

    © Arnaud Muthelet

     

    Multiple users can fit in a Cave, enabling collaboration. Note that as of now, the displayed images have the correct perspective for a maximum of two users, and multiple-user interaction is not yet the norm.

    (c) S. Kuntz

    Then several systems with digital projectors exist, from the Holobench and Holostage to the Reality Center and a “simple” mono or multi-projectors wall.

     

    Holobench - Photos © PSA Peugeot Citroën Mediatheque.

     

    A Wall © Arnaud Muthelet

    A Reality Center © Arnaud Muthelet

    An HoloStage © Arnaud Muthelet

     

    Panoscope (c) Laval Virtual

    The Matsushita Electronics Hemispheric Dome  is an hemispherical screen of 8.5 meters in inside diameter, 18 projectors, with stereo images projected on the screen having a wide field of view (FOV) of 180 degrees in horizontal and 150 degrees in vertical directions.

     

     

    Now that the traditional theaters are buying digital projectors that have great chances of being able to display 3D pictures. As 3D movies are coming back, we should consider them as potential VR centers !

     

     

    That’s why the biggest VR display is in Paris, in the famous La Géode theater that also hosts an Imax projector.

    (c) S. Kuntz

    (c) Dassault Systèmes

    HMD, VR Goggles

    There is an impressive number of Head Mounted Displays (HMD) on the market. Some of them are getting more attention :

    (c) S. Kuntz

    - the eMagin Z800 seems to be the most successful. Priced at1500$, it has very nice displays (OLED, 800×600), but disappointing integrated trackers.

    n

    (c) Trimersion

    - the Trimersion has the big advantage of being wireless and cheap (600$). Small resolution (640×480) and probably crappy integrated trackers. Note that the gun is not tracked.


    (c) Sensics

    - the piSight Sensics is a panoramic HMD, with a field of view up to 180°, and up to 4200×2400 pixels per eye ! It is made up of several OLED 800×600 displays (built by eMagin). The main problem is that if it is not perfectly setup on your head, you can see the seams between those displays. And it’s very expensive.

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    Wed 9 Jan 2008

    The state of Virtual Reality .. in 1993 !

    Published at 18:20   Category VR Applications, VR Devices, VR Displays  

    The guys at EVL are posting a lot of videos !!

    Those two show a state of VR in 1993, with an impressive list of videos and applications. It would be really nice to have one such video now =)

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    Thu 22 Nov 2007

    The pocket cathedral - birth of the CAVE

    Published at 0:27   Category Art, VR Displays, Virtual Reality  

    Alex Bouchet showed me those two vintage videos of the early days of the CAVE :

    “(1991) before the CAVE was called “The CAVE” it was internally named the Pocket Cathedral (actually it was called the Closet Cathedral - or the Closet for short).
    The CAVE was invented by the Electronic Visualization Laboratory (EVL) at the University of Illinois at Chicago.”

    It seems CAVE stood for Cave Audio Visual Environment, then Cave Automatic Virtual Environment.

    Dan Sandin says that CAVE refers to “both the early cave paintings and to the shadows of the ideal forms in Plato’s cave”.

    (Update: Here’s another good introductory video to the CAVE system : 1993)

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    Mon 12 Nov 2007

    Cave Unreal Tournament Video

    Published at 16:49   Category Game, VR Applications  

    Alex Bouchet sent me this video of him playing Jeffrey Jacobson’s Cave Unreal Tournament :

    Alex says it’s a bit buggy (synchronisation problems), and the navigation is not very natural yet, but the immersion awesome.

    Can I come play with your Cave? :p

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    Fri 2 Nov 2007

    AFRV - 2nd days

    Published at 17:42   Category Virtual Reality  

    The french association for virtual reality (AFRV [fr], english page here) was holding its annual meeting in Marseille. Nearly all the major actors of VR in France were there.

    The complete photo gallery is here.

    - The 3×3x4m Cave of the CRVM -

    Bruno Arnaldi has been elected as the new AFRV president, replacing Philippe Fuchs.

    Here are some interesting things that were said during those days, in a simplified and out-of-context form (don’t hesitate to correct me!) :

    - VR is very interesting to study humans: it allows for a good experimental control and ecological validity: you can manipulate a reality and conduct experiments that for practical or ethical reasons couldn’t be conducted in the real world.

    - In a lot of fields, studies must be done to see if the actions, behavior and perception in virtual environments and reality match. This ecological validity is crucial for the validity of studies conducted in VR only.

    - A lot of work has to be done to improve the communication skills of an avatar: non-verbal cues must be transmitted for better communication, and the way we interact with them must be simplified, more natural.
    - A lot of people don’t want to use intrusive devices (HMDs, glasses etc)

    - 3D interactions are still a big research area.

    - Users are not necessarily ready to use haptics (force-feedback), even a 6DOF device is sometimes difficult!

    - Rehabilitation through VR is better: closer to reality, better transfer from virtual to real, better motivation thanks to the fun aspect of VR.

    - Stereo viewing is not the natural way of seeing. Sometimes we are faster at evaluating depth through parallax. Studies are being conducted to study the perception of shapes with stereoscopy compared to the real world.

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    Thu 11 Jan 2007

    Virtools VRPack in action

    Published at 23:28   Category Game, VR Applications  

    Here are two videos demonstrating interesting (read “fun”) uses of VR. Lightsaber and 3d modelling!

    Related article : VR FPS : Atrium Experience

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