CvIntHaarClassifier

//定义一个宏。宏里面是指针函数
#define CV_INT_HAAR_CLASSIFIER_FIELDS()                                 
    float (*eval)( CvIntHaarClassifier*, sum_type*, sum_type*, float );      //计算分类器haar特征值
    void  (*save)( CvIntHaarClassifier*, FILE* file );                       //保存haar特征值
    void  (*release)( CvIntHaarClassifier** );                                //释放特征值

/* internal weak classifier*/
typedef struct CvIntHaarClassifier//内部弱分类器
{
    CV_INT_HAAR_CLASSIFIER_FIELDS()
} CvIntHaarClassifier;

/*
 * CART classifier
 */
typedef struct CvCARTHaarClassifier
{
    CV_INT_HAAR_CLASSIFIER_FIELDS()

    int count;
    int* compidx;
    CvTHaarFeature* feature;
    CvFastHaarFeature* fastfeature;
    float* threshold;
    int* left;
    int* right;
    float* val;
} CvCARTHaarClassifier;