Virtual Reality


By: Shravan Kumar (LT RBG)

virtual reality

Ever felt sad about missing an opportunity of attending a concert or a cricket match. Don’t worry! We can still have the same experience just by sitting at our place. Thanks to Virtual Reality.

Virtual reality, sometimes referred to as immersive multimedia, is a computer-simulated environment that can simulate physical presence in places in the real world or imagined worlds. Virtual reality can recreate sensory experiences, including virtual taste, sight, smell, sound, touch, etc.

If you haven’t experienced VR, you’re probably wondering how it works. The short answer is, using Oculus technology and wearing a VR headset, you’re thrust into another environment with little more than tapping a button.

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A special 3D-printed camera rigs that can hold 6 or 10 cameras in a spherical shape is used for shooting. Each camera is mounted at a specific angle so the camera’s field of view will overlap portions of the surrounding cameras’ field of view. That overlap will eliminate any gaps in the footage and allow for flexibility at the seams. When all the cameras are recording, they capture video at the same time, and it covers the entire 360° by 180° area.

The first thing to remember is that 360° means EVERY THING is in the view of the camera and will be in the shot. This includes you, your crew, any lights, microphones, equipment, every crack on the ceiling, and dirty footprints on the floor. This type of shot limits and gives freedom to the director at the same time. Placement of the camera in the scene is key and important to storytelling.

To capture the action of the scene, you need to consider what role the person wearing the VR headset will take. The last item to consider is camera movement. In order to achieve action, there needs to be an impetus of movement, like a drone, a car, a track, or a person. Bear in mind, whatever is controlling the motion will be in the video.
Stitching turns the individual videos into a single, high resolution, seamless panoramic video.

The resulting video typically covers 360×180° field of view in a “world map” style of geometric projection at 4K resolution. Other geometric projections and resolutions can be targeted, like the cool looking “little planet” effect, or circular fish-eye for immersive dome theatres.

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VR plays an important role in combat training for the military. It allows the recruits to train under a controlled environment where they are to respond to different types of combat situations. VR is also used in flight simulation for the Air Force where people are trained to be pilots. It has application in the fields of Video games, Fine arts, Heritage, archaeology, urban design and Therapy
360° video has endless possibilities. Just imagine the places and experiences you can go and have without leaving your desk chair!

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Have you experienced VR? Did you enjoy the experience? What kind of places or experiences would you like to see in VR? Share your thoughts in the comments.