Virtual Reality Vs Mixed Reality

“For in dreams we enter a world that is entirely our own. Let them swim in the deepest ocean or glide over the highest cloud”
-J.K. Rowling, Author

This statement would have been true few decades ago where books and movies were the only source to step into the land of imagination. This is an era where reality technologies like Augmented reality (AR), Virtual reality (VR) and Mixed reality (MR) are gaining momentum. Of these, Mixed reality serves as a platform to explore and interact with virtual world by merging both physical and virtual spaces together. Mixed reality, as defined by Paul Milgram and Fumio Kishino [1] is anywhere between the extremas of Virtuality continuum (VC) ,where VC extends from the completely real through to the completely

Put simply, in mixed reality you can see virtual objects just like you can in augmented reality, but these objects can also interact with the real world. In a sense, mixed reality is a more immersive and interactive type of augmented reality.
There are two main types of devices that deliver Mixed Reality experiences:
1. Holographic devices. These are characterized by the device 's ability to place digital content in the real world as if it were really there. Ex: Hololens.
2. Immersive devices. These are characterized by the device 's ability to create a sense of "presence" – hiding the physical world and replacing it with a digital experience.
Ex: MR headsets.
How does MR work? Figure4. Environment input and

For this purpose it is important to collaborate the real and virtual spaces through an interface. Human input happens through a variety of means including keyboards, mice, five senses and even Kinect skeletal tracking.
Advancements in sensors and processing are giving rise to a new area of computer input from environments. The interaction between computers and environments is effectively environmental understanding or perception. Environmental input captures things like a person 's position in the world, surfaces and boundaries, ambient lighting, environmental sound, object recognition and location, without which experiences cannot be blended between the physical and digital realities.
Now, the combination of all three – computer processing, human input and environmental input – sets the opportunity to create true mixed reality experiences. Movement through the physical world can be translated to movement in the digital world. Boundaries in the physical world can influence application experiences, such as game play in the digital