Good Evening,
now I have a problem with find some solution for zoom camera frames.
I have a this ...
... and I want zoom it like this.
Of course I am using a onCameraFrame function, here is a code example:
public Mat onCameraFrame(CameraBridgeViewBase.CvCameraViewFrame inputFrame) {
return mRgba = inputFrame.rgba();
}
Do you have any idea ? Thanks everyone for any comment and ideas !
i do not have any adroid sdk, so i cannot test, but the gist is like this:
public Mat onCameraFrame(CameraBridgeViewBase.CvCameraViewFrame inputFrame) {
mRgba = inputFrame.rgba();
float zoom = 0.8;
Size orig = mRgba.size();
int offx = 0.5 * (1.0-zoom) * orig.width;
int offy = 0.5 * (1.0-zoom) * orig.height;
// crop the part, you want to zoom into:
Mat cropped = mRgba.submat(offy, orig.height-offy, offx, orig.width-offx);
// resize to original:
Imgproc.resize(cropped, cropped, orig);
return cropped;
}
Asked: 2017-04-03 14:02:04 -0600
Seen: 1,947 times
Last updated: Apr 04 '17