Augmented Reality Part 2 || Types of AR || History of AR || AR Working in Details in HINDI
0Augmented Reality Part 2 || Types of AR || History of AR || AR Working in Details in HINDI
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It’s amazing how technology is evolving in a short span of time. Once thought as impractical is now the reality. Who would have thought we could experience the natural environment simply by clicking a button on the smartphone sitting in the living room!
The basic idea of augmented reality is to superimpose graphics, audio and other sensory enhancements over a real-world environment in real time. But these systems display graphics for only one point of view. Next-generation augmented-reality systems will display graphics for each viewer's perspective. But for now, AR is implemented using one of three approaches, SLAM, Recognition Based and Location Based.
SLAM (Simultaneous Localization and Mapping) is the most effective way to render virtual images over real-world objects. SLAM simultaneously localizes sensors with respect to their surroundings, while at the same time mapping the structure of the environment. SLAM is an approach to solve complex AR simulation problems and is not any specific algorithm or software. The SLAM system is, in fact, a set of algorithms aimed at solving simultaneous localization and mapping problem. This can be done in multiple ways and now every augmented reality development kit has its upon to providing SLAM functionality.
Recognition (or marker) based augmented reality uses a camera to identify visual markers or objects, such as a QR/2D code or natural feature tracking (NFT) markers, to showcase an overlay only when the marker is sensed by the device. Marker-based AR technology depends upon device camera to distinguish a marker from other real-world objects. Not only the marker image but the position and orientation can also be calculated. Once recognized the marker on screen is replaced with a virtual 3D version of the corresponding object. This is done to permit the user to observe the object in more detail and from various angles. Rotating the marker would rotate the virtual replication as well.
Contrary to recognition based, location-based AR relies on a GPS, digital compass, velocity meter, or accelerometer to provide data about the location and the augmented reality visualizations are activated based on these inputs. It is also known as markerless augmented reality. The location detection features in smartphones make it easy to leverage this type of augmented reality technology, making it quite popular. Some common uses of location-based AR include mapping directions, finding nearby services, and other location-centric mobile apps.
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