Of C ++ in java (OpenCV)

Question

Sorry for my bad english. Learning OpenCV, do the program for android, required rotate the photo on the location of the eyes, the required code found in the book "Mastering OpenCV with Practical Computer Vision Projects" in Chapter 8, where we have the following code:

// Get the transformation matrix for the desired angle & size.
Mat rot_mat = getRotationMatrix2D(eyesCenter, angle, scale);
// Shift the center of the eyes to be the desired center.
double ex = DESIRED_FACE_WIDTH * 0.5f - eyesCenter.x;
double ey = DESIRED_FACE_HEIGHT * DESIRED_LEFT_EYE_Y –
eyesCenter.y;
rot_mat.at<double>(0, 2) += ex;
rot_mat.at<double>(1, 2) += ey;
// Transform the face image to the desired angle & size &
// position! Also clear the transformed image background to a
// default grey.
Mat warped = Mat(DESIRED_FACE_HEIGHT, DESIRED_FACE_WIDTH,
CV_8U, Scalar(128));
warpAffine(gray, warped, rot_mat, warped.size());

how to translate a string:

 rot_mat.at<double>(0, 2) += ex;
 rot_mat.at<double>(1, 2) += ey;

in Java?

^^ because the actual question is how to translate the last 2 lines to java, i guess. — berak, Nov 29 '15 at 14:44

score 0 · Accepted Answer · answered Nov 29 '15 at 14:41

0

If I understand correctly what you want is to know what is the mat.at method in java right? If so you can use Mat::get() (double[] Mat::get(int row, int col)). Here a more in depth answer is given.

answered Nov 29 '15 at 14:41

RCountZero

38
3

Thanks! It's works=) – user3389292 Nov 29 '15 at 14:49

Of C ++ in java (OpenCV)

1 Answers1