Virtual reality and Augmented reality are one of the important developments in the technological fields. Virtual reality and augmented reality are not the same. In simple terms, virtual reality is a computer-generated simulation or an environment for example if you put a headset it block out your worldview and substitutes a digital world designed for your senses, from the point of view of your brain you are somewhere else, it's a form of mental teleportation.
Augmented reality(AR) is a mixed reality, it does not cut out the main world like VR it's an enhancement of your real world with magical virtual objects in it. AR supplements or augments computer-generated images using motion tracking. Pokemon Go and the face filters in snapchat uses basic AR technology. Augment means to increase or to add. Thus AR technology is adding to our existing reality. Augmented reality enhances one’s current perception of reality. With the help of advanced AR, technology the information about the surrounding real world of the user becomes interactive and digitally manipulable. Information about the environment and its objects is overlaid on the real world. AR is shown great progress in Microsoft Hololens.
In AR objects can be seen in tables, information can be placed on the walls. This is done by motion tracking to the user's field of view. The motion tracking is done by a set of cameras placed around the room or cameras in the AR headphone and also gyroscope sensors to track every movement. Today AR is made possible using light field technology. If you are holding something in front of your face what you are seeing is the light that bounces back from it and passes into your eyes from multiple angles. Your brain combines the 2D image from each eye and uses visual cues like rotation and focus of your eyes to create a sense of depth. When watching a digital image through a device, you see a flat 2D image with a fixed focal point, but it doesn't feel natural. Using light field optics or multifocal plain approach the image is cut into different focal plains and sending back that light into your eyes. So when you look at different objects it replicates the way in which your eyes would naturally focus. Light field theory made the experience more realistic and comfortable for your eyes.
AR and VR are the only technology which can provide actual package experiences. It is said that the correct combination of AR and VR can replace smartphones in daily life. If done right these technologies have an incredible potential. Although the AR headphones that exist today are huge and are needs to be tethered to a computer. Developers believe that it can be made compatible with daily life. Companies like Microsoft and Avegant are making great progress in AR applications. Avegant is making efforts in making a simple spectacle containing all the features of AR and VR. In a few years, instead of smartphones, people will carry these glasses in their pockets.
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