Tag Archives: virtual environment

Samsung Gear VR

The Samsung Gear VR is a Virtual Reality headset designed to work with Galaxy Note 4 smartphone using Oculus Rift technology.

The headset uses an accelorator, gyrometer, magnetic and proximity sensors to enable interaction with a virtual environment by moving the headset using the same technology as the Oculus Rift.

On the side of the headset are a number of controls including a touch pad, back button, and a volume rocker. Focal adjustment can be also be undertaken on the system.

VR Content can be viewed through an Oculus Home App.

The systems has a 96º degree viewing angle.

The Innovator Edition is available in two editions; one which just consists of the Gear VR costs £185 with a second containing a Bluetooth gamepad for controlling content within the VR environment costs £240.

Potenital
Like other VR systems it could be used to remotely view immersive photos/videos of excavations/cultural heritage.

Unlike the Oculus Rift the system is wireless.

Limitations
The Gear VR is designed to only work with the Galaxy Note 4, if the user already owns one then it is only an additional of £185, but the phone itself costs £600 making it an expensive purchase for use with the Gear VR. Although technically it has greater potential than Google Cardboard the fact that it only works with one phone severely limits its user-ability.

The system cannot be connected to a PC so all material has to be downloaded via the phone.

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Google Cardboard

Google Cardboard are VR (Virtual Reality) goggles made out of cardboard using an android smart phone as the central processing unit and display via the Google Cardboard App. The cardboard shell can either be purchased for less than £10 complete with lenses and magnet button control or the cardboard design downloaded from the website and the other parts purchased separately.

The mobile phone provides you with orientation tracking using a gyroscope and accelerometer built into the phone which means that the the app can track the movement of the user’s head updating the imagery on the phone depending on the direction that the user is facing.

A magnetic trigger on the outside of the cardboard allows interaction with the VR environment by effecting the magnetometer in the phone. Although with calibrated magnetometers this can only act as a single button, with uncalibrated magnetometers incorporated in newer phone there is greater variety of abilities with the possibility of incorporating a joypad into the outside of the case.

The Google Camera App (On Android 4.4 and later) can record 360° Photo Spheres which can easily be viewed in the Google Cardboard App on the smartphone, other Photo Spheres can be viewed be editing their file names. The app can also view videos on YouTube including those designed for the Oculus Rift or other VR Gear with two separate views in the video. Integration with Google Earth and Google Maps Street View is also possible.

Two SDKs (Software Development Kits) can be downloaded from the website:

  • The first is the Cardboard SDK for Android which allows VR applications to be quickly created in OpenGL.
  • The second is the Cardboard SDK for Unity which allows an application created in the Unity 3D game engine to be viewed in the Google Cardboard Goggles or to design one from scratch.

Although designed for phones with the Android operating system, phones using iOS can also be used in the Google Cardboard using Durvois Dive (a plastic VR Goggle frame which also uses smartphones) apps.

Potential
Google Cardboard was designed to both allow the cheap and easy ability for almost anyone to view VR and to help push forward development of the systems.

It has the ability to both view virtual reconstructions of sites and view still 360° photographs and immersive videos of sites, these can easily be downloaded and viewed by anyone anywhere in the world using the technology. The fact that the phone can be used to create 360° Photo Spheres as well enables the both the recording and viewing of views of cultural heritage and excavations with technology that may already be owned.

Limitations
Because it uses a smartphone there are limitations to its abilities that would not be there with more powerful computer systems. The quality of the imagery is also completely dependent on the quality of the smartphone screen.

Although the control is limited to the one button on the outside of the Google Cardboard some wi-fi/bluetooth game controllers can be used with Android operating systems allowing much more interaction. There have however been problems with the button working, particularly on certain models, it is after-all a technical workaround to use a device for a function it was not designed for.

News – Sulon Cortex

The Cortex is a combined virtual and augmented reality headset allowing immersive virtual experiences to be conducted in real-world environments. The unit has 3D sensors and scanners which detect and integrate the real world into the virtual environment, with the surroundings of the virtual environment being controlled with motion and gesture controls.

The Developer Kit is currently available for pre-order for $499.

Potential
The system has great potential for viewing a reconstruction of a site while walking around the site, or viewing the site in a mockup with the same wall positions. It could revolutionize the way tours of buildings are conducted with the audience wearing a headset which displays the reconstruction of the building as they walk around it.

It also has potential for a virtual museum, with artifacts being virtually projected into an existing environment, even the user’s home.

Leap motion controller

The Leap motion controller is a USB device that uses LEDs (light emitting diodes) and camera sensors to scan an area above the device tracking the movement of both hands and 10 fingers and translating their movement to the computer. The Leap Motion App Store has over 200 apps which interact with the software, including

An additional mount can be purchased which connects the Leap to the front of an Oculus rift allowing the control of a virtual environment.

The Leap Motion Controller costs €89.99, an additional mount for the Oculus Rift can be purchased for an additional €14.99 or together for €96.99. While an HP Leap Motion Keyboard can be purchased for €99.99.

Example
The potential of the Leap in the field of Spatial Augmented Reality within a museum environment has already been demonstrated with the MANAO Project as part of the V-MUST Project (Virtual Museum Transnational Network) where a Leap Motion Controller detects a finger that is pointed at an object replicating a virtual torch, the outline of the torch is displayed on the object using a video project which projects the original colours onto the surface of the object.
manao-capteur-en_large
This has already been used in the Allard Pierson Museum in Amsterdam as part of the Keys2Rome international exhibition, it can be seen at 1 minute 22 seconds in the following video.

Potential
The Leap has great potential for the control of both GIS and 3D modelling software where the movement and rotation of views could be controlled with simple hand movements. But it also has the ability to add interaction into a virtual reality environment by combining it with a system such as the Oculus Rift where immersive environments created from other recording techniques could be interacted with.

It is slightly larger than a USB stick and plugs into a USB cable with no other power requirements, so is very portable.

Limitations
The Leap is designed to read hand and finger movement, this of course limits what it can read unlike the Microsoft Kinect which can read whole body movement.

News – Google Street View Trekker

Google has announced that their Street View Trekker backpack will be available to borrow by organisations including tourism boards, non-profit organisations, government agencies, universities or research groups. The Trekker bacpack was designed to enable the recording of areas of the world where the Google Street View Car could not reach, so that the imigary could be incorporated in Street View within Google Maps.

The Street View Trekker backpack consists of a dome of 15 5-megapixel digital cameras which record images every 2.5 seconds as a person walks forward, two GPS receivers which log the location data, two SSD (Solid State Drivves) which store the data and dual lithium batteries which allow 8 hours of recording. The images are procecssed into 360 panoramas when the system is returned to the office. The system weighs 42 pounds.

Potential
With a partnership with Google heritage bodies have the ability of recording walkthoughs of important monuments easily with advanced digital technology which can be incorporated into the free Google Maps system; and as of December 2014 Historic Scotland have taken advantage of this showcasing 16 of their properties.

The system provides quality site tours of important cultural heritage which can be viewed by anyone using the Street View system.

Limitations
As the system is ground based only views from this angle will be recorded, meaning that informaion from other angles is lost.

The cameras are only 5-megapixel, which work well for the intended purpose of creating web accessible 360° panoramas, but limits their usefullness for other techniques such as photogrammetry.