How to rotate the camera when using class VideoCapture on OpenCV? (Sample Face Detection on Android). I'm rotating the canvas with:
if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT)
{
Matrix matrix = new Matrix();
matrix.preTranslate(
(canvas.getWidth() - bmp.getWidth()) / 2,
(canvas.getHeight() - bmp.getHeight()) / 2);
matrix.postRotate(270f, (canvas.getWidth()) / 2,
(canvas.getHeight()) / 2);
canvas.drawBitmap(bmp, matrix, null);
}
but image from Camera doesn't rotate: Face Detect dont work.
The camera receives the stream from the following:
protected Bitmap processFrame(VideoCapture capture) {
capture.retrieve(mRgba, Highgui.CV_CAP_ANDROID_COLOR_FRAME_RGBA);
capture.retrieve(mGray,
Highgui.CV_CAP_ANDROID_GREY_FRAME);
UPDATE I did the following:
@Override
protected Bitmap processFrame(VideoCapture capture) {
if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) {
Core.flip(mRgba.t(), mRgba, 0);
}
else {
}
capture.retrieve(mRgba, Highgui.CV_CAP_ANDROID_COLOR_FRAME_RGBA);
capture.retrieve(mDetect_thread.mGray,
Highgui.CV_CAP_ANDROID_GREY_FRAME);
But is dont work. When I run the program in portret orientation(on android device)- program don't start When i run the rogram in landscape orientation - programm work, but when i rotation the device, program work, but image on display dont rotation