welton122's profile - activity

Brilliant thanks!! casting to int worked! Thanks for everyone's help. Just out on interest, why would it be using unsigned char???

Hello,

I'm new to OpenCV so sorry if this is a basic question.

I'm converting from the IplImage structure into a Mat matrix however there seem to be a problem because when I try to access an element within the matrix, it return no data. Naturally I have tried debugging it and checking (using visual studios debug tools) to see if the matrix structure contains any data. From what I can see it does not.

Heres my code:

Mat imageMatrix(image);

cout << "Data: " << imageMatrix.at<unsigned char>(0, 0) << endl;

cvWaitKey();

The fact i'm having to use unsigned char is a little worrying as well as the image is binary. It should just be int, should it not?

Can anyone help me at all with this>

Thanks.