atp's profile - activity

Conversion between multichannel and multidimensional matrices Is there a direct way to convert from a multichannel matri

thanks, I removed the zeros part.

Conversion between multichannel and multidimensional matrices Is there a direct way to convert from a multichannel matri

Thanks, fixed.

Conversion between multichannel and multidimensional matrices Is there a direct way to convert from a multichannel matri

Conversion between multichannel and multidimensional matrices Is there a direct way to convert from a multichannel matri

It won't be a as fast as the transpose that exists within opencv? Why?

How do I transpose an image that does has a number of channels that is not covered by the standard transpose function in OpenCV?

I want to convert a float matrix to an unsigned char matrix with the same number of channels.

cv::Mat imgA(3, 3, CV_32FC(5));
// image is filled with something
cv::Mat imgB;
imgA.convertTo(imgB, CV_8UC(imgA.channels()));

How can the additional channels of a CV_8UC image be accessed? The following gives a segmentation fault.

std::cout << (int) imgB.at<uchar>(0,0,1) << "\n";

Interesting. I was not aware of CV_32FC(k) to create a matrix with k channels. I created a multidimensional matrix using:

int sizes[3] = {100, 100, 5};
cv::Mat img(3, sizes, CV_32F);

Would your code work in this case as well?

Let's say I have a nxnx3 matrix and I want to copy that matrix into a nxnx5 matrix (and fill the remaining channels with other stuff). How can this be done in OpenCV? I'm looking for a solution that is not using a for loop.