Is it possible to call a function written in C in a matlab program?

Is it possible to call a function written in C in a matlab program? I have to process video files,and I want to calculate the motion vectors of a video file,but apparently its difficult to do it in matlab. Hence my professor suggested I do it in C. But i do not want to make the whole code in C since I'm comfortable with matlab. Any help would be appreciated.

Answer 1

[Shashank Prasanna]

MEX files. You can modify your c code to add gateway functions and call it from MATLAB.

Search the doc for mex or go through:

http://www.mathworks.com/help/matlab/programming-interfaces-for-c-c-fortran-com.html

Answer 2

[Aurimas]

I don't know what function you need, but you can also easily use .NET Framework or Java calls in your Matlab code. http://www.mathworks.se/help/matlab/external-interfaces.html