Retrieving type of Opencv Mat_<T> at compile time

Question

I need to access the element type T of an opencv matrix Mat_<\T> at compile time; Is there any way to do it? I am trying to achieve the following:

template <typename T> void foo(const T& mat) { // T::type* ptr = (T::type*)mat.data; } foo(Mat_<float>::ones(5,5));

The following declaration is not an option:

template <typename T> void foo(const Mat_<T>& mat);

chwarr · Accepted Answer · 2013-11-11 10:58:44Z

1

It looks like there is a typedef called value_type that does what you want.

template <typename T> void foo(const T& mat) { T::value_type* ptr = ...; }

answered Nov 11, 2013 at 10:58

chwarr

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2 Comments

chwarr Over a year ago

Use the source Luke. :-)

memecs Over a year ago

Couldn't find the source either :( , I quickly looked for it as well. They used to have the header within the documentation of Mat_ once, I think they should put it back :)

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