我會盡量簡化我的問題。可以說,我只是想看看使用相機的灰度圖像,我做這種方式:Opencv android,捕獲圖像
public Mat onCameraFrame(CvCameraViewFrame inputFrame) {
return inputFrame.gray();
}
這工作得很好,我現在可以dinamically看到我的屏幕灰度圖像。但問題是,當我試圖捕捉這個圖像(框架)。它不是以灰色捕捉它,而是以彩色捕捉它(它忽略了我在onCameraFrame中所做的所有效果)。爲了捕捉圖像我使用教程3做了同樣的方式 - 攝像頭控制(下面是相關的代碼):
public class MainActivity extends Activity implements CvCameraViewListener2, View.OnTouchListener {
private CameraLab mOpenCvCameraView;
protected void onCreate(Bundle savedInstanceState) {
mOpenCvCameraView = (CameraLab) findViewById(R.id.openCVCamera);
mOpenCvCameraView.setVisibility(SurfaceView.VISIBLE);
mOpenCvCameraView.setCvCameraViewListener(this);
}
@Override
public boolean onTouch(View v, MotionEvent event) {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd_HH-mm-ss");
String currentDateandTime = sdf.format(new Date());
String fileName = "Image_"+currentDateandTime + ".jpg";
mOpenCvCameraView.takePicture(fileName);
return false;
}
}
public class CameraLab extends JavaCameraView implements PictureCallback {
private String mPictureFileName;
public void takePicture(final String fileName) {
Log.i(TAG, "Taking picture");
this.mPictureFileName = fileName;
mCamera.setPreviewCallback(null);
// PictureCallback is implemented by the current class
mCamera.takePicture(null, null, this);
}
@Override
public void onPictureTaken(byte[] data, Camera camera) {
Log.i(TAG, "Saving a bitmap to file");
mCamera.startPreview();
mCamera.setPreviewCallback(this);
// Write the image in a file (in jpeg format)
try {
FileOutputStream fos = new FileOutputStream(mPictureFileName);
fos.write(data);
fos.close();
} catch (java.io.IOException e) {
Log.e("PictureDemo", "Exception in photoCallback", e);
}
}
}
因此,回顧一下,問題是無論我在做onCameraFrame(使圖像灰度,檢測圈.. )當我捕捉圖像我沒有得到任何這些效果,我只是得到一個正常的形象。
我該如何解決這個問題?