In 1994 Paul Milgram and Fumio Kishino defined the concept of mixed reality as any space between the extremes of the continuum of virtuality. This continuum of virtuality extends from the completely real world to the completely virtual environment, with both augmented reality and mixed reality being found in this continuum..

Mixed reality (MR) is the combination of virtual reality and augmented reality that allows the creation of new spaces in which objects, information, people... both imaginary and reproduced from reality) interact in real and virtual scenarios.

That is, mixed reality not only allows the user to interact with the virtual environment but also allows physical objects in the user's immediate environment to serve as elements of interaction with the virtual environment.

Human beings assimilate the world through our five senses, which work together with our neurology to create our own internal representation of reality. Human beings in general are visual, auditory and kinesthetic, and thanks to this, through virtual reality, we can experience an environment that is not real as real.

Virtual reality is possible thanks to the application of stereoscopic techniques. During childhood, human beings develop stereoscopic vision, which allows them to see three-dimensional images by integrating the 2 images obtained from each of the eyes through the brain. That is, each eye captures the image separately and the brain interprets it as a single image, producing the effect of three-dimensionality.

As already mentioned, mixed reality allows the incorporation of computer-generated graphic objects in a three-dimensional scene reproduced from the real world or the incorporation of objects reproduced from the real world in a virtual world.

The main characteristics are three:.

The operating principle of this technology is very complex, but broadly speaking it could be understood in the following ways:.

Interface markings are usually black and white prints on a rigid support. The information captured by the interface camera will be the code with which the computer can generate the corresponding virtual images and place them in the virtual scene according to the position and rotation of the marks..

In the case of experiencing mixed reality through virtual reality systems, it is important to keep in mind:

• the minimum age recommended for the use of virtual reality devices (glasses, visors, helmets...). Children under 8-9 years old do not have fully developed eyesight, so it could be counterproductive for their eyesight.

• in the case of minors, the experience must be carried out under the supervision of an adult.

• the duration of the experience should last a maximum of 15 to 20 minutes per session. Long-term use is not recommended.

• It is advisable to start experimenting with "relaxed" experiences and increase dynamism.

• You have to make sure that the space is "safe" and that there are no obstacles that could interfere, since if you use viewers you stop perceiving the real environment and what is part of it.

• It is not recommended to use virtual reality devices while doing activities such as driving, running, etc.

• in cases where very active stimuli are incorporated, people who suffer from some type of nervous system disorder such as epilepsy should be supervised.

• In the case of using virtual reality devices that incorporate magnets, people with pacemakers must be taken into account.

Mixed reality is being implemented in a large number of applications, it is beginning to manifest itself in the entertainment and art industry, as well as beginning to diversify in the world of education and business..

Basically, the systems used in mixed reality are:.

Other mixed reality applications are as follows:.

The combat environment is simulated and represented through complex data by HMD..

Mixed reality enables a global workforce of remote teams to work together and address an organization's business challenges. No matter where they are physically located, an employee can enter a collaborative and dynamic virtual environment. Language barriers will become irrelevant as AR applications can accurately translate in real time. This represents a more flexible workforce. While many companies continue to use inflexible fixed work time and location models, there is evidence that employees are more productive if they have greater autonomy over where, when and how they work. Employees also benefit from autonomy in how they work because each processes information differently. The classic VAK model for learning styles differentiates visual, auditory and kinesthetic learners.[2].

Surgical and ultrasound simulations are used as a training exercise for healthcare professionals. Medical mannequins come to life to generate an unlimited number of training scenarios and teach empathy to healthcare professionals.[3]'.

Virtual models are used to allow scientists and engineers to interact with a possible future creation before it hits the factory floor. These models provide the opportunity to gain an intuitive understanding of the exact product, including actual size and construction details that allow for closer inspection of interior parts. These virtual models are also used to find hidden problems and reduce time and money.[4]

These simulators are already used in aviation schools and space stations..

Mixed reality allows you to simulate navigation without having to be on a boat and reducing the costs that this would entail.

Use of simulators to recreate real situations on the road.

Training for police, firefighters...

Simulation of buildings and urban plans.

Simulators to decorate a house or applications that allow you to take a virtual tour.

Mixed reality makes it possible to live the user experience of a product that has not yet been created in reality.

Experience trips through nature, through space...

Simulation of visiting different places in the world.

In the field of education, mixed reality improves students' learning methods, through simulations of tasks built virtually in a real environment. An example of this is Peer, a new tool that won the Interaction Award. 2017 that involves a Mixed Reality educational experience to help in the teaching and understanding of complex concepts and processes by combining mixed reality headsets with sensors connected to the internet.[5]​.

In this area, mixed reality allows people to face conflictive situations, fears, phobias... virtually in order to resolve them.

Mixed reality would serve to develop and perfect skills such as leadership, public speaking, etc.

NLP is a methodology based on the assumption that all knowledge has structure, and that this structure can be modeled, learned, taught and modified (reprogrammed). Humans experience themselves and the world through the 5 senses (sight, hearing, touch, smell and taste). The different stimuli we receive are captured by the senses, processed and translated into a representation. Mixed reality can be used for reprogramming and behavior change.

Three companies that are currently betting on mixed reality are[6]​:.

Many more applications could be named than those presented below, so here are just a few:.

One of the first mixed reality applications was created by Alfred Hubli from the University of Illinois. The application consisted of a virtual pendulum pushing a real pendulum, and vice versa..

In the experiment, a mechanical pendulum was connected to a virtual one that moved according to equations of motion tested over time. The researchers sent data from the real pendulum to the virtual pendulum, and they sent information from the virtual pendulum to a motor that influenced the movement of the real pendulum. This resulting mixed reality was possible to create thanks to the computational speed of today's computers..

Created by Kommerz. It is a system that can be used in a wide variety of applications, such as games, architecture and landscape planning. The interface allows you to control virtual objects in 3D using real objects (for example toys, geometries, special characters...)..

This is a technology in development that consists of an HMD that incorporates two integrated compact cameras. The HMD makes it possible to eliminate the difference that would appear between the observer's two eyes by using two different cameras for each eye. The observer will see virtual objects along with real ones, allowing the user to know the dimension of the virtual object since they can compare it with real objects. These real objects are created by computer and projected into the real world in one way or another using projectors, according to the distribution of the black and white marks of the interfaces placed in the real environment..

The virtual world Second Life allows the user or avatar "Avatar (Internet)") to attend classes at Harvard University. In these classes you can see the professor on a screen, as if the avatar were really following a class at the university. It will be mixed reality if this projection of the Harvard professor in the Second Life class is in real time..

Most of the technology developed regarding virtual experimentation is related to the visual and auditory. Technologies for quality virtual experimentation through touch, taste or smell have not yet been developed, but work is being done on it.

Regarding mixed reality display technologies, the following stand out:

Allows the user to see information and/or images in front of them without having to move their head..

This technology allows the user to enter a virtual reality, augmented reality or mixed reality environment**, since by having the device so close to the eyes the projected virtual objects appear to be part of the user's environment.**.

When we talk about Mixed Reality it can be confused with other terms such as Virtual Reality or Augmented Reality.

The difference between these three concepts is the following:

•Immersive Virtual Reality (VR) allows us, through a viewer, to immerse ourselves in a different space and interact with the elements that appear in it.

•Augmented Reality (AR), “enriches” the “real” reality in which we find ourselves, allowing us to view complementary information in this (whether 3D elements, sounds, images, videos) positioned through certain “physical marks” or GPS data.

•Mixed Reality (MR) combines “different realities”, creating new scenarios in which real and virtual objects are integrated on the same plane, and interact with each other in real time.

In 1994 Paul Milgram and Fumio Kishino defined the concept of mixed reality as any space between the extremes of the continuum of virtuality. This continuum of virtuality extends from the completely real world to the completely virtual environment, with both augmented reality and mixed reality being found in this continuum..

Mixed reality (MR) is the combination of virtual reality and augmented reality that allows the creation of new spaces in which objects, information, people... both imaginary and reproduced from reality) interact in real and virtual scenarios.

That is, mixed reality not only allows the user to interact with the virtual environment but also allows physical objects in the user's immediate environment to serve as elements of interaction with the virtual environment.

Human beings assimilate the world through our five senses, which work together with our neurology to create our own internal representation of reality. Human beings in general are visual, auditory and kinesthetic, and thanks to this, through virtual reality, we can experience an environment that is not real as real.

Virtual reality is possible thanks to the application of stereoscopic techniques. During childhood, human beings develop stereoscopic vision, which allows them to see three-dimensional images by integrating the 2 images obtained from each of the eyes through the brain. That is, each eye captures the image separately and the brain interprets it as a single image, producing the effect of three-dimensionality.

As already mentioned, mixed reality allows the incorporation of computer-generated graphic objects in a three-dimensional scene reproduced from the real world or the incorporation of objects reproduced from the real world in a virtual world.

The main characteristics are three:.

The operating principle of this technology is very complex, but broadly speaking it could be understood in the following ways:.

Interface markings are usually black and white prints on a rigid support. The information captured by the interface camera will be the code with which the computer can generate the corresponding virtual images and place them in the virtual scene according to the position and rotation of the marks..

In the case of experiencing mixed reality through virtual reality systems, it is important to keep in mind:

• the minimum age recommended for the use of virtual reality devices (glasses, visors, helmets...). Children under 8-9 years old do not have fully developed eyesight, so it could be counterproductive for their eyesight.

• in the case of minors, the experience must be carried out under the supervision of an adult.

• the duration of the experience should last a maximum of 15 to 20 minutes per session. Long-term use is not recommended.

• It is advisable to start experimenting with "relaxed" experiences and increase dynamism.

• You have to make sure that the space is "safe" and that there are no obstacles that could interfere, since if you use viewers you stop perceiving the real environment and what is part of it.

• It is not recommended to use virtual reality devices while doing activities such as driving, running, etc.

• in cases where very active stimuli are incorporated, people who suffer from some type of nervous system disorder such as epilepsy should be supervised.

• In the case of using virtual reality devices that incorporate magnets, people with pacemakers must be taken into account.

Mixed reality is being implemented in a large number of applications, it is beginning to manifest itself in the entertainment and art industry, as well as beginning to diversify in the world of education and business..

Basically, the systems used in mixed reality are:.

Other mixed reality applications are as follows:.

The combat environment is simulated and represented through complex data by HMD..

Mixed reality enables a global workforce of remote teams to work together and address an organization's business challenges. No matter where they are physically located, an employee can enter a collaborative and dynamic virtual environment. Language barriers will become irrelevant as AR applications can accurately translate in real time. This represents a more flexible workforce. While many companies continue to use inflexible fixed work time and location models, there is evidence that employees are more productive if they have greater autonomy over where, when and how they work. Employees also benefit from autonomy in how they work because each processes information differently. The classic VAK model for learning styles differentiates visual, auditory and kinesthetic learners.[2].

Surgical and ultrasound simulations are used as a training exercise for healthcare professionals. Medical mannequins come to life to generate an unlimited number of training scenarios and teach empathy to healthcare professionals.[3]'.

Virtual models are used to allow scientists and engineers to interact with a possible future creation before it hits the factory floor. These models provide the opportunity to gain an intuitive understanding of the exact product, including actual size and construction details that allow for closer inspection of interior parts. These virtual models are also used to find hidden problems and reduce time and money.[4]

These simulators are already used in aviation schools and space stations..

Mixed reality allows you to simulate navigation without having to be on a boat and reducing the costs that this would entail.

Use of simulators to recreate real situations on the road.

Training for police, firefighters...

Simulation of buildings and urban plans.

Simulators to decorate a house or applications that allow you to take a virtual tour.

Mixed reality makes it possible to live the user experience of a product that has not yet been created in reality.

Experience trips through nature, through space...

Simulation of visiting different places in the world.

In the field of education, mixed reality improves students' learning methods, through simulations of tasks built virtually in a real environment. An example of this is Peer, a new tool that won the Interaction Award. 2017 that involves a Mixed Reality educational experience to help in the teaching and understanding of complex concepts and processes by combining mixed reality headsets with sensors connected to the internet.[5]​.

In this area, mixed reality allows people to face conflictive situations, fears, phobias... virtually in order to resolve them.

Mixed reality would serve to develop and perfect skills such as leadership, public speaking, etc.

NLP is a methodology based on the assumption that all knowledge has structure, and that this structure can be modeled, learned, taught and modified (reprogrammed). Humans experience themselves and the world through the 5 senses (sight, hearing, touch, smell and taste). The different stimuli we receive are captured by the senses, processed and translated into a representation. Mixed reality can be used for reprogramming and behavior change.

Three companies that are currently betting on mixed reality are[6]​:.

Many more applications could be named than those presented below, so here are just a few:.

One of the first mixed reality applications was created by Alfred Hubli from the University of Illinois. The application consisted of a virtual pendulum pushing a real pendulum, and vice versa..

In the experiment, a mechanical pendulum was connected to a virtual one that moved according to equations of motion tested over time. The researchers sent data from the real pendulum to the virtual pendulum, and they sent information from the virtual pendulum to a motor that influenced the movement of the real pendulum. This resulting mixed reality was possible to create thanks to the computational speed of today's computers..

Created by Kommerz. It is a system that can be used in a wide variety of applications, such as games, architecture and landscape planning. The interface allows you to control virtual objects in 3D using real objects (for example toys, geometries, special characters...)..

This is a technology in development that consists of an HMD that incorporates two integrated compact cameras. The HMD makes it possible to eliminate the difference that would appear between the observer's two eyes by using two different cameras for each eye. The observer will see virtual objects along with real ones, allowing the user to know the dimension of the virtual object since they can compare it with real objects. These real objects are created by computer and projected into the real world in one way or another using projectors, according to the distribution of the black and white marks of the interfaces placed in the real environment..

The virtual world Second Life allows the user or avatar "Avatar (Internet)") to attend classes at Harvard University. In these classes you can see the professor on a screen, as if the avatar were really following a class at the university. It will be mixed reality if this projection of the Harvard professor in the Second Life class is in real time..

Most of the technology developed regarding virtual experimentation is related to the visual and auditory. Technologies for quality virtual experimentation through touch, taste or smell have not yet been developed, but work is being done on it.

Regarding mixed reality display technologies, the following stand out:

Allows the user to see information and/or images in front of them without having to move their head..

This technology allows the user to enter a virtual reality, augmented reality or mixed reality environment**, since by having the device so close to the eyes the projected virtual objects appear to be part of the user's environment.**.

When we talk about Mixed Reality it can be confused with other terms such as Virtual Reality or Augmented Reality.

The difference between these three concepts is the following:

•Immersive Virtual Reality (VR) allows us, through a viewer, to immerse ourselves in a different space and interact with the elements that appear in it.

•Augmented Reality (AR), “enriches” the “real” reality in which we find ourselves, allowing us to view complementary information in this (whether 3D elements, sounds, images, videos) positioned through certain “physical marks” or GPS data.

•Mixed Reality (MR) combines “different realities”, creating new scenarios in which real and virtual objects are integrated on the same plane, and interact with each other in real time.