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The Augmented Reality is the superposition of reality and elements calculated by a real-time computer system. It often refers to the different methods of realistically embedding virtual objects in a sequence of images.

Mixed reality is a variation of AR ; it features the fusion of real and virtual worlds to produce new environments and visualizations, where physical/living and digital objects coexist and interact in real time.

OST-AR (optical see-through augmented reality) => The screens are transparent so that the real world is visible through the optics and the digital content added.

Commonly used equipment: Augmented Reality or Mixed Reality Glasses

VST-AR (video see-through augmented reality) => Use of content from the camera filming the real world and integrated in a virtual reality environment.

Commonly used equipment: smartphones, tablets

The term “virtual reality” typically refers to computer technology that simulates the physical presence of a user in an artificially generated software environment.

Virtual reality blocks reality and supplants it with virtual objects.

The largest area of application is gaming.

Commonly used equipment: Virtual Reality Glasses

eXtended Reality is the generic term used for virtual reality (VR), Augmented Reality (AR) and mixed reality (MR), as well as immersive technologies of future realities.

Smartglasses are a wearable piece of technology that allows to display information in the wearer’s field of view. They usually embed an OS, sensors, memory, battery….

Some glasses can be linked to a smartphone but are usually rather called “connected glasses”.

There are different categories of smartglasses:

  1. Closed types when you are completely enclosed onto a virtual world, meant to be used for Virtual Reality applications.
  2. See-through types when you can see the real world through the glasses, and digital information are overlaid, they are used for Augmented Reality/Mixed Reality applications.

Two see-through types subcategories exist:

a. Monocular smartglasses, one lens, image appear in front of one eye

b. Binocular smartglasses, two lenses, image projected right in the field of view

The metaverse (contraction of meta universe) is a concept of infinite and interconnected fictional digital universes in which a person will evolve through an avatar. It will use mixed reality systems (augmented reality, virtual reality). It will be a place to work, but also to play, to access leisure, and to interact with other avatars. This persistent world will continue to exist once left. Exchanges and payments will be made with cryptocurrencies or NFTs.

The contours and structure of the metaverse (resources, materials, security, nature of interactions, etc.) are not yet defined, but the business potential is massive; many companies and brands are already investing to have their place in the metaverse in the future.

An avatar is a custom graphic illustration. It represents a user of a computer, phone, tablet, connected glasses, or a character or alter ego of that user.

An avatar appears either in a three-dimensional  or in a two-dimensional form on Internet forums and virtual worlds. This illustration can be found on websites and online role-playing games.

It is an integral part of webchats, messaging systems, blogs and artificial intelligence, and especially virtual and augmented realities.

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