OpenCV Fast Surf combination

[mohberdy]

hello all, i'm new in this site & i hope im not on a wrong forum ;)
i'm doing a tracking application using opencv Lib in Microsoft VS 2010 Express & I want to combine between Fast corner Detector & Surf descriptor , so the probleme is this : i dont know while im using surf descriptor if this creates a spaceScale for Keypoints generated by Fast corner Detector. so any help would be benefits for me.
thank you all
Mohand

[amma]

http://opencv.itseez.com/

the latest opencv documentation surely has a piece on the matter

[mohberdy]

yeah but i did deep researches into the official documentation but i didnt find any explanation or solution to my probleme.