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I am using the Vuforia SDK to build an Android application and am curious as to how the marker tracking works. Does the app convert the video frame into byte codes and then compare these against the .dat file generated by creating the marker? Also, where is this code found in the Vuforia sample app, is it in the C++ ? Thanks.
Well, you don’t see the code for recognition and tracking because they are Intellectual property of Qualcomm and usually should not be revealed.
Vuforiais not an open-source library.Vuforia first detects “feature points” in your target image [Web-based target management] and then uses the data to compare the features in target image and the receiving frame from camera.
Google “Natural feature detection and tracking” which falls under Computer Vision area and you will find interesting stuff.