Augmented Reality Feature Matching using the NDK with an async approach for >= Android 4.0
What is this repository for?
- Uses the camera image to search for a specified template image within it via a feature matching approach using the OpenCV C++ library. The detected object is marked with lines within the scene. This can be used to e.g. find a logo.
- uses an async approach, that means that not every frame will be searched for the object and the GUI stays fluent/responsible
- the OpenCV Java library is used as well for loading the template image. The processing on the other hand is done by the OpenCV C++ library only.
- currently the async calculated image is painted over the live camera preview which can be seen on the edge. This might be changed in the future.
- Version 1.1
How do I get set up?
- IDE: Android Studio (tested with 2.2.2)
- Android SDK & NDK
- Dependencies: OpenCV 3.0.0 library (included)
- Template image location: res/drawable Changeable in CameraPreviewView
- Make sure the app has the required permission on start, as there is no runtime-check yet! (Camera)
Default template image
Copyright of the logo: The Coca-Cola Company
Who do I talk to?
- Repo owner and developer: email@example.com
- The passing of the camera frame data from Java to C++ and the async approach is based on Jay Rambhia's AsyncCamera https://github.com/jayrambhia/AsynCamera
- The feature matching is based on this official OpenCV tutorial http://docs.opencv.org/2.4/doc/tutorials/features2d/feature_homography/feature_homography.html Unlike in this application their version is using OpenCV 2 and is for use with normal images
- This C++ library integration builds on code from the Android Open Source Project: https://github.com/googlesamples/android-ndk/tree/master/hello-libs