Mat explicit assignment error opencv

Question

I am trying to initialize a Mat variable, that will hold the following matrix

    [1,0,0,0
     0,1,0,0
     0,0,1,0
     0,0,0,1]

From this link, I got a method to do this and implemented the same

    Mat Tfrm = (Mat_double(4,4)<<1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1);

However, I faced the following error

    resectioning_1.cpp:809:28: error: ‘Mat_double’ was not declared in this scope

Can you please tell me how to resolve this? I googled but got nowhere. Maybe am not sure of what to search. I knowthis is a simple issue, but pelase help me. If there's another simple way to achieve what am trying to do, please let me know. Thanks in advance

score 1 · Accepted Answer · answered Sep 09 '13 at 11:15

1

You need Mat_<double> instead of Mat_double:

Mat Tfrm = (Mat_<double>(4,4)<<1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1);

answered Sep 09 '13 at 11:15

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Mat explicit assignment error opencv

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