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Android 和OpenCV整合开发(2)---去除OpenCV Manager包的方法

2024-10-18 08:51:01   214人阅读

以修改FaceDetection例子工程为例>

  • 1，修改makefile【Android.mk】（在jni目录下）
  • OpenCV_CAMERA_MODULES:=on
OpenCV_INSTALL_MODULES:=on
OpenCV_LIB_TYPE:=SHARED
include ${OpenCVROOT}/sdk/native/jni/OpenCV.mk
2，修改FdActivity.java文件
<1>增加静态函数
static {
 Log.i(TAG,"OpenCV library load!");
 if (!OpenCVLoader.initDebug()) {
 Log.i(TAG,"OpenCV load not successfully");
 } else {
 System.loadLibrary("detection_based_tracker");// load other libraries
}
}
<2>删除FdActivity.java的OnResume()方法的最后那句，不让它去访问OpenCV Manager
@Override
public void onResume() {
super.onResume();
//OpenCVLoader.initAsync(OpenCVLoader.OpenCV_VERSION_2_4_3, this, mLoaderCallback);//
}
<3>修改FdActivity.java的OnCreate()方法
public void onCreate(Bundle savedInstanceState) {
 Log.i(TAG,"called onCreate");
super.onCreate(savedInstanceState);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

setContentView(R.layout.face_detect_surface_view);

// add start
 try {
 // load cascade file from application resources
 InputStream is = getResources().openRawResource(R.raw.lbpcascade_frontalface);
 File cascadeDir = getDir("cascade", Context.MODE_PRIVATE);
 mCascadeFile = new File(cascadeDir,"lbpcascade_frontalface.xml");
 FileOutputStream os = new FileOutputStream(mCascadeFile);

 byte[] buffer = new byte[4096];
 int bytesRead;
 while ((bytesRead = is.read(buffer)) != -1) {
 os.write(buffer, 0, bytesRead);
}
is.close();
os.close();

 mJavaDetector = new CascadeClassifier(mCascadeFile.getAbsolutePath());
 if (mJavaDetector.empty()) {
 Log.e(TAG,"Failed to load cascade classifier");
 mJavaDetector = null;
 } else
 Log.i(TAG,"Loaded cascade classifier from"+ mCascadeFile.getAbsolutePath());

 mNativeDetector = new DetectionBasedTracker(mCascadeFile.getAbsolutePath(), 0);// hujiawei

cascadeDir.delete();

 } catch (IOException e) {
e.printStackTrace();
 Log.e(TAG,"Failed to load cascade. Exception thrown:"+ e);
}

//add end

 mOpenCVCameraView = (CameraBridgeViewBase) findViewById(R.id.fd_activity_surface_view);
mOpenCVCameraView.enableView();// add.
mOpenCVCameraView.setCvCameraViewListener(this);
}

Android 和OpenCV整合开发(2)---去除OpenCV Manager包的方法


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