cvsnakeimage in opencv2.2

I want to use the cvsnakeimage function for active contours from opencv.

The开发者_C百科 problem is that i cannot find this function under opencv2.2, have the name been changed or what is the problem. Thanks in advance!

Function cvSnakeImage reside in legacy module. (opencv2/legacy/legacy.hpp at line 818)

/* Updates active contour in order to minimize its cummulative
   (internal and external) energy. */
CVAPI(void)  cvSnakeImage( const IplImage* image, CvPoint* points,
                           int  length, float* alpha,
                           float* beta, float* gamma,
                           int coeff_usage, CvSize  win,
                           CvTermCriteria criteria, int calc_gradient CV_DEFAULT(1));