call object function from dll

[futrfrf]

Hello,

There is a function I want to call: http://docs.opencv.org/3.1.0/d3/d63/classcv_1_1Mat.html#a3f356665bb0ca452e7d7723ccac9a810

but it is a class member non static function, wich used in C++ like this "A.convertTo(B,CV_8U)"

How can I call this function?

I use OpenCV UDF but there is no warp to "convertTo" func there.