This repository gives some example code to run native OpenCV code on Android. Using the Android camera interface will typically give much better frame rates than the OpenCV samples which use a different interface.
Since native code is used, it is necessary to download the Android NDK as well as the OpenCV SDK. In order to run this project, the variable OPENCV_SDK that is used in Android.mk needs to be defined. This can be done in Eclipse by going to Preferences > C/C++ > Build > Environment. Then add a new variable with the name OPENCV_SDK. The value should be the full path to the OpenCV SDK, e.g.:
/Users/arthurdent/Android/OpenCV-2.X.X-android-sdkThe function processFrame(cv::Mat&) in jni/native.cpp can be used for custom image processing using the OpenCV functions. As an example, Canny edge detection is performed by default.