Question

我正试图从红色圆圈内部获取颜色，并改变位于左上角的大圆圈的颜色，如screen shot所示。如在屏幕截图中看到的那样，大圆圈的颜色与红色圆圈中的颜色不同，它会从红色圆圈中稍微留下颜色。我给了同样的坐标，如何解决它？

这是我的代码。

public class MainActivity extends AppCompatActivity implements CameraBridgeViewBase.CvCameraViewListener2, View.OnTouchListener {

    private CameraBridgeViewBase cameraManager;

    private BaseLoaderCallback callBack = new BaseLoaderCallback(this) {
        @Override
        public void onManagerConnected(int status) {
            cameraManager.enableView();
        }
    };

    Mat mRgba;
    double[] renk;
    int r,g,b;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        if(!OpenCVLoader.initDebug()){
            OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_3_2_0, this, callBack);
        }

        cameraManager = (CameraBridgeViewBase)findViewById(R.id.kamera);
        cameraManager.setVisibility(View.VISIBLE);
        cameraManager.setCvCameraViewListener(this);
        cameraManager.setCameraIndex(0);
    }

    @Override
    public void onCameraViewStarted(int width, int height) {
        mRgba = new Mat(width, height, CvType.CV_8UC4);
    }

    @Override
    public void onCameraViewStopped() {

    }

    @Override
    public Mat onCameraFrame(CameraBridgeViewBase.CvCameraViewFrame inputFrame) {
        mRgba = inputFrame.rgba();

        renk = mRgba.get(mRgba.width()/2, (mRgba.height()/10)*8);
        Imgproc.circle(mRgba, new Point(mRgba.width()/2, (mRgba.height()/10)*8), 10, new Scalar(255,0,0));

        r = (int) renk[0];
        g = (int) renk[1];
        b = (int) renk[2];

        Imgproc.circle(mRgba, new Point(0, 0), 100, new Scalar(r,g,b), 100);

        return mRgba;

    }

    @Override
    public boolean onTouch(View v, MotionEvent event) {
        return false;
    }
}

Answer 1

（代表OP发布）。

我知道那件事。 Point（x，y）=列，行。

OpenCV同样支持不同的点？

1 个答案: