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  1. 1. Aditya Pandey 04613304409 MCA 5th sem
  2. 2. 1. Introduction2. What is augmented reality?3. What is Real time information?4. Components5. Supporting applications6. How to use7. Working8. Algorithm9. Steps to create a layar10. Create virtual objects11. Features of Layar12. Challenges13. Bibliography
  3. 3. o Dutch company based in Amsterdam, created amobile augmented reality browser called Layar.o It shows you what is around you by displaying realtime digital informationo This digital information is called a ‘layer’.
  4. 4. In Layar, an augment is a digital model (2D or 3D)rendered on a target object as seen through the mobilephone camera lensIn a general sense, it is any technology that lets youview digital information within a useful context in thereal world.Like- Watching sports on television.
  5. 5. Real-time data denotes information that is deliveredimmediately after collection. There is no delay in thetimeliness of the information provided.
  6. 6. o Layer definitiono Points of interest(POI) within layero Detailed POI
  7. 7. Layer definition is the information about layer, whatkind of task it performs.e.g.- TravelIndia, to get information about the placesin INDIA.
  8. 8. Point of interests are nothing more than the featureswhich the layer contains. The points of interestprovide to user by Layar service provider.e.g.- specific building name.
  9. 9. Detailed Points Of Interest is the detailed informationprovided by the developer to user about the point ofinterests.e.g.- information about building.
  10. 10. o Mobile phone camerao GPS(Global Positioning System)o Compasso Accelerometero Mobile internet connection
  11. 11. The camera captures theworld as seen throughits lens and shows it onthe screen.Camera works as aninterface to user.
  12. 12. The GPS is used todetermine the actualposition of the user andreal world objects.Layar works on thebasis of the position ofthe user and the realworld objects, so it iscompulsory todetermine the userlocation.
  13. 13. The compass determinesthe direction of view andthe direction of the userand provides the resultsto the usercorresponding to thedirection of view.
  14. 14. The accelerometer in the smart-phones is used to measure theorientation or vertical andhorizontal positioning of thephone. The most basicapplication of this is the deviceknowing when to alternate theview of the screen dependingon how you are holding it.
  15. 15. Mobile internetconnection is used totake real timeinformation about theworld from the web.
  16. 16. o Connect smart-phone to internet.o Set GPS connection on.o Open the LAYAR application.o Select desired layer.o Select the range(km) of results.o Launch the Layer.
  17. 17. Contentsource
  18. 18. There are two phases which works during theLAYAR workingo Object detection(detect object)o Approximations(Represent object)
  19. 19. o The server receives the current GPS coordinates.GPS( ){//code to return GPS coordinates of user.return(coordinates);}
  20. 20. o The server receives the current the compassheading.Compass( ){//code to return Compass heading.return(heading);}
  21. 21. o The server runs a collision detection algorithm.CollisionDetection( Compass, Heading) { //detection algorithm code run and gives outputin //TRUE or FALSE }
  22. 22. o If the adjusted coordinate collides with an existingObject, the object’s information is returned.if(TRUE) { Information(Object);// returns object info }
  23. 23. o Information regarding specific events belonging tothat object may then be requested in the form of textdescriptions, photos and videos.
  24. 24. o An approximation is a representation of somethingthat is not exact, but still close enough to be useful.o The objects in LAYAR are approximated to berectangles.o The rectangle’s orientation is approximated to beupright with respect to the north.o This makes easy to find directions.
  25. 25. Collision Detection-o detects the collision of two or more objects.o In layar when the current GPS coordinates collidewith the existing object location then the informationregarding that object visible in users screen.
  26. 26. o Support for 3D modelso Support for animated argumentso Sharing to Facebook and twittero Support audio and video
  27. 27. o support Android 2.2 and above, as well as iPhone 3and 4, with iOS4.0 and above.o Tracking quality is dependent on the camera qualityand lighting conditions.o Fluidity of tracking when in motion is affected byprocessing power.
  28. 28. o Not many phones with inbuilt GPS/Compass inIndia to provide location based engagement usingAR.o Video requires 3G and even GPRS has very limitedreach in India with < 5% of total mobile users.
  29. 29. o Smart phones accounting to very minute share ontotal phones available in India.o Application downloads in India are limited due tomany factors like lesser user base with GPRS, slowspeed, cost involved in data pans etc…
  30. 30. o