文件列表:

EVMHR\app\build.gradle (1242, 2016-10-11)
EVMHR\app\proguard-rules.pro (662, 2016-10-11)
EVMHR\app\src\androidTest\java\cn\edu\seu\evmhr\ExampleInstrumentedTest.java (762, 2016-10-11)
EVMHR\app\src\main\AndroidManifest.xml (1257, 2016-10-11)
EVMHR\app\src\main\cpp\Android.mk (734, 2016-10-11)
EVMHR\app\src\main\cpp\Application.mk (257, 2016-10-11)
EVMHR\app\src\main\cpp\native-lib.cpp (528, 2016-10-11)
EVMHR\app\src\main\cpp\SpatialFilter.cpp (3292, 2016-10-11)
EVMHR\app\src\main\cpp\SpatialFilter.h (1727, 2016-10-11)
EVMHR\app\src\main\cpp\VideoProcessor.cpp (17924, 2016-10-11)
... ...

# EVMHR ## Introduction EVMHR is an Android app for detecting human heart rate by analysing the video taken from the front camera of the phone, it is based on the theory of *Eulerian Video Magnification* raised by Wu, H.-Y., et al in 2012. And the implementation of the core function is provided by Weizhou Pan in his blog article: [Eulerian Video Magnification](http://www.hahack.com/codes/eulerian-video-magnification/#源码和程序). Here is a simple *demo*: ## How to use ### Android Studio This project contains a large amount of C++ code, so we use NDK to build the native library, which will be called by android interface. Android Studio 2.2 provides a good compiling compatibility with C++ code, we are not sure about the success of compilation in previous version of Android Studio. ### FFmpeg The video recorded from a phone camera was compressed by the system, while OpenCV cannot read the video codec used by Android, which typically is avc or h.2***. So we use a compiled version of FFmpeg: [ffmpeg-android-java](https://github.com/WritingMinds/ffmpeg-android-java). To use this library, make sure to have the following line in your app's build.gradle: ``` dependencies { ... compile 'com.writingminds:FFmpegAndroid:0.3.2' ... } ``` ### OpenCV This project is based on OpenCV4Android 3.1.0, you can download it from [here](https://sourceforge.net/projects/opencvlibrary/files/opencv-android/). We only need the native folder, so copy it to the same level beside your app folder. ### NDK We use NDK 12, just download it from the manager in Android Studio. In app/src/main/cpp fold, edit the Android.mk file and adapt the path of openCV.mk to your own `include PathTo \native\jni\OpenCV.mk` If you add your own .cpp files, don't forget to add them into `LOCAL_SRC_FILES` If you want to change the native interface function in C++, make sure you follow the naming rule: `Java_ + PackageName + ClassName+ InterfaceName` and use `InterfaceName` in your java code. ## Lincese MIT License

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