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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

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