使用OpenCV打开Android本机Camera [英] Open the Android native Camera using OpenCV

问题描述

我只需要知道如何开始这个实际上我需要打开Android本机相机使用opencv。

I just need to know about how can I start with this actually I need to open the Android native camera using opencv.

在哪里可以找到相关的文档或任何帮助材料？
我已经设置我的eclipse使用opencv示例项目！

Where can I find the related docs or any helping material? I have setup my eclipse working with the opencv sample projects!

推荐答案

看看发货opencv示例opencv / samples / android /，你应该能够找到几个好的例子。这里还有一个指向文档的链接，其中显示如何打开相机。

Have a look at the shipped opencv samples in opencv/samples/android/, there you should be able to find a few good examples. Here is also a link to the docs that shows how to open the camera. Don't forget to request the permissions to access the camera.

简短版本，请参阅完整详细信息的链接：
添加布局：

Short version, see the link for full details: Add a layout:

<org.opencv.android.JavaCameraView
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:visibility="gone"
    android:id="@+id/HelloOpenCvView"
    opencv:show_fps="true"
    opencv:camera_id="any" />

初始程序：

private BaseLoaderCallback mLoaderCallback = new BaseLoaderCallback(this) {
    @Override
    public void onManagerConnected(int status) {
        switch (status) {
            case LoaderCallbackInterface.SUCCESS:
            {
                Log.i(TAG, "OpenCV loaded successfully");
                mOpenCvCameraView.enableView();
            } break;
            default:
            {
                super.onManagerConnected(status);
            } break;
        }
    }
};

@Override
public void onResume()
{
    super.onResume();
    OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_3, this, mLoaderCallback);
}

实现CVFrameListener2接口：

Implement CVFrameListener2 interface:

 private CameraBridgeViewBase mOpenCvCameraView;

 @Override
 public void onCreate(Bundle savedInstanceState) {
     Log.i(TAG, "called onCreate");
     super.onCreate(savedInstanceState);
     getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
     setContentView(R.layout.HelloOpenCvLayout);
     mOpenCvCameraView = (CameraBridgeViewBase) findViewById(R.id.HelloOpenCvView);
     mOpenCvCameraView.setVisibility(SurfaceView.VISIBLE);
     mOpenCvCameraView.setCvCameraViewListener(this);
 }

 @Override
 public void onPause()
 {
     super.onPause();
     if (mOpenCvCameraView != null)
         mOpenCvCameraView.disableView();
 }

 public void onDestroy() {
     super.onDestroy();
     if (mOpenCvCameraView != null)
         mOpenCvCameraView.disableView();
 }

 public void onCameraViewStarted(int width, int height) {
 }

 public void onCameraViewStopped() {
 }

 public Mat onCameraFrame(CvCameraViewFrame inputFrame) {
     return inputFrame.rgba();
 }

这篇关于使用OpenCV打开Android本机Camera的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！