opencv图像基础（2）直方图

cvCreateHist

CvHistogram* cvCreateHist(
int dims,
int* sizes,
int type,
float** ranges=NUL
int uniform=1 );

typedef struct CvHistogram
{
int type;
CvArr* bins;
float thresh[CV_MAX_DIM][2]; /* for uniform histograms */
float** thresh2; /* for non-uniform histograms */
CvMatND mat; /* embedded matrix header for array histograms */
}
CvHistogram;