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What is Augmented Reality (AR)?
Augmented Reality is nothing but an interactive experience in the real-world environment, where there is an enhancement of the real-world object by using digital visual elements, sound, or other sensory stimuli delivered via technology. It uses objects from the real world and puts virtual information to enhance the experience. The 3d images projected in the real world, are the works of the AR developer. The best thing about AR is the ability to blend the digital world into a person’s perception of the real-world. In order to enhance one’s experience, they overlay visual, auditory or other sensory information into the world. Retailers and other companies, nowadays, use AR to promote goods, products or services, launch marketing campaigns and also to collect unique user data.
How does augmented reality work?
Cameras and sensors:
Both the camera and sensor are located on the outside of the device. It captures the images and patterns from the outside world and transfers it into digital content in order to process the information for bringing out an appropriate output.
Projection:
This is the system that creates a projection onto any surface without the requirement for any external device to do so. This is done by the projector attached to the device that projects the processed digital data in a format understandable to the human mind.
Processing:
AR devices use almost all the components used by a computer but it is more compact. The AR devices have elements such as:
- Accelerometer- to measure the speed in which the wearer’s head is movie
- Gyroscope- to measure the tilt and orientation of the wearer’s head
- Magnetometer- like a compass to find the direction in which the head is turned.
These are the things that give a realistic experience in augmented reality.
Reflection:
Mirrors are used in augmented reality devices to assist with the way your eye views the virtual image. Some augmented reality devices may have “an array of many small curved mirrors” and others may have a simple double-sided mirror with one surface reflecting incoming light to a side-mounted camera and the other surface reflecting light from a side-mounted display to the user’s eye. In the Microsoft Hololens, the use of “mirrors” involves see-through holographic lenses (Microsoft refers to them as waveguides) that use an optical projection system to beam holograms into your eyes. A so-called light engine emits the light towards two separate lenses (one for each eye), which consists of three layers of glass of three different primary colours (blue, green, red). The light hits those layers and then enters the eye at specific angles, intensities and colours, producing a final holistic image on the eye’s retina. Regardless of method, all of these reflection paths have the same objective, which is to assist with image alignment to the user’s eye.
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