Hi, I am new to the Matx format, and am trying to extract data into a std::vector and a cv::Mat.
I have :
cv::Matx44d resultMat;
which is a 4 x 4 transformation matrix. I wish to extract the translation part of this (the last col) into a std::vector, and the rotation part (the top left 3x3 matrix) into a new Mat object.
How can I go about this?
Thanks!
opencv 3.2 and C++. just do it !
Matx44d xxt(11, 12,13,14,21,22,23,24,31,32,33,34,41,42,43,44);
Mat xt(xxt);
Mat xr=xt(Range(0,3),Range(0,3)).clone();//Mat xr=xt(Rect(0,0,3,3)).clone();
vector<double> lastCol;
lastCol = xt.colRange(Range(3, 4));
for (int ii=0;ii<4;ii++)
cout<<lastCol[ii]<<"\t";
cout<<"\n";
cout<<xr;
results :
xt = [11, 12, 13, 14;
21, 22, 23, 24;
31, 32, 33, 34;
41, 42, 43, 44]
14 24 34 44
[11, 12, 13;
21, 22, 23;
31, 32, 33]
Actually... when i replace the Mat xt with my cv::Matx44d xt, it gives errors.Rect and colrange are not members of Matx it seems...
Asked: 2017-01-24 14:07:14 -0600
Seen: 935 times
Last updated: Jan 24 '17
