Wednesday, 29 April, 2020 UTC
Summary
Contact-Less Experience: Future Tech, Innovation, IIOT.
In my previous post, we learned about the history of AR with the definition of Virtual, Augment & Mixed reality.
In this post, I’ll dive deep into MAR
Picture credit: https://datafloq.com/AR uses a certain range of data (images, animations, videos, 3D models), users can see the result in both natural & synthetic light. Also, users have the sense of real-world which is enhanced further by computer vision.
AR involves technologies like S.L.A.M. (simultaneous localization and mapping), depth tracking (briefly, a sensor data calculating the distance to the objects), Camera & Sensors (Collecting data about user’s interactions and sending it for processing), Processing (AR devices require a CPU, a GPU, flash memory, RAM, Bluetooth/WiFi, a GPS, etc. to be able to measure speed, angle, direction, orientation in space, and so on which smartphones already do), Projection (takes data from sensors and projects digital content (the result of processing) onto a surface to view) & Reflection (The goal of reflection paths is to perform a proper image alignment).
There are mainly 2 types of AR used in mobile apps.
1. Marker-based Augmented Reality
2. Marker-less Augmented Reality
1. Marker-based Augmented Reality
2. Marker-less Augmented Reality
- Marker-based Augmented Reality: It uses image-recognition algorithms to specify the position and rotation of markers. It requires a special visual object and a camera to scan (it may be anything, from a printed QR code to special signs). In order for an AR application to estimate the orientation and position of a camera with respect to the real world frame, most applications employ a tracking technology known as marker-based augmented reality. The marker tracking allows the use of a digital image to identify optical squares or markers and gauge their relative orientation to the camera itself.¹
The optical square marker usually consists of a black square within a white box of a predefined size. It is the black square which is encoded with the ID of the marker. A variety of techniques is used which decode the marker by cross-matching with it. Once you begin using the marker-based augmented reality system with a digital device, the image of the physical world captured by your camera is converted into a grayscale image to expedite the image processing algorithm.¹
The algorithm then uses the image of the camera as well as the decoded marker ID to augment the virtual object onto the physical world model. By focusing the camera of whichever digital device you are using to deploy the augmented reality app on the specified markers, the app is able to retrieve the information stored to display the three-dimensional virtual object accurately.¹
The algorithm then uses the image of the camera as well as the decoded marker ID to augment the virtual object onto the physical world model. By focusing the camera of whichever digital device you are using to deploy the augmented reality app on the specified markers, the app is able to retrieve the information stored to display the three-dimensional virtual object accurately.¹
Trending AR VR Articles:
1. Ready Player One : How Close Are We?
2. Augmented Reality — with React-Native
3. Five Augmented Reality Uses That Solve Real-Life Problems
4. Virtual Reality Headsets: What are the Options? Which is Right For You?
2. Marker-less Augmented Reality: It is also referred to as location-based or position-based augmented reality, that utilizes a GPS, a compass, a gyroscope, and an accelerometer to provide data based on the user’s location. This approach eliminated the need for 3D object tracking systems, overcoming the interactivity limitations marker-based augmented reality placed on the range of images encapsulated within the markers.²
https://medium.com/media/28c6d5392226980b32cc4a43470f24f3/hrefMarkerless augmented reality technique allows the use of any and all parts of the physical environment as the target or base for the placement of superimposed virtual objects. Markerless AR depends on the natural features of a surrounding rather than the fiducial identifying markers. What’s more, some markerless systems have the ability to extract and store information and characteristics about the environments they are used on for later usage. When used in smartphones and other digital devices, the markerless AR system typically makes use of the GPS feature in-built in the device in order to locate and interact with the available augmented reality resources. Completely non-invasive, lighter and with a larger capacity for images, the markerless augmented reality system is now a much-preferred method of image recognition as compared to the marker-based counterpart.²
See you guys in the next post of WebAR.
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https://medium.com/media/1e1f2ee7654748bb938735cbca6f0fd3/hrefMobile Augmented Reality (MAR)- Part 2 was originally published in AR/VR Journey: Augmented & Virtual Reality Magazine on Medium, where people are continuing the conversation by highlighting and responding to this story.