[ML] randGaussMixture not defined

[amroamroamro]

The cv::ml::randGaussMixture function is declared in ml.hpp header file, but not defined anywhere!

I get a linking error if I try to use it in my code... I tested on OpenCV 3.0.0, but it looks like it is also missing in master as well.

[StevenPuttemans]

That is indeed true, as you can see, added a PR to remove the declaration, since there is not a single function or module out there using it. If someone need it later on, they will need to provide an implementation.

[amroamroamro]

Those functions were available in the 2.4 branch, but for some reason removed when the ML module was rewritten when OpenCV moved to 3.0:

https://github.com/Itseez/opencv/blob/2.4/modules/ml/src/inner_functions.cpp#L213

It shouldn't be hard to re-add that code (preferably using the modern C++ interface instead).

[StevenPuttemans]

I am guessing that there is a reason for the removal. Probably the functionality is available in another form...

[aman11dhanpat]

So according to issue opencv/opencv#5472, the functionality is removed from header. Should I take an initiative by adding the 2.4 source to Master (In C++ form)?

[amroamroamro]

@aman11dhanpat please do! I for one can see a use for the function (think about quickly generating clustering data for Kmeans or EM).

Also people porting code from MATLAB would want an equivalent function to gmdistribution.