适用于Android的OpenCV库（人像摄像头）

Question

I am developing android application with facial recogniton using opencv library. My problem is the screen orientation. I got a solution with code below in JavaCameraView class.

mCamera.setDisplayOrientation(90);
mCamera.setPreviewDisplay(getHolder());

The camera is good but the facial detection doesnt work.

I found this but I think that the solution does not work in latest version of opencv library.

Any ideas could be useful.

Thanks in advance.

Answer 1

You have to also create the setDisplayOrientation by adding this:

protected void setDisplayOrientation(Camera camera, int angle){
    Method downPolymorphic;
    try
    {
        downPolymorphic = camera.getClass().getMethod("setDisplayOrientation", new Class[] { int.class });
        if (downPolymorphic != null)
            downPolymorphic.invoke(camera, new Object[] { angle });
    }
    catch (Exception e1)
    {
    }
}