cvHaarDetectObjects 解析（2）_cvhaardetectobjects 区别-优快云博客

本文链接：https://blog.youkuaiyun.com/sunboyiris/article/details/18037207

本文深入探讨了cvHaarDetectObjects分类器的内部结构及其操作函数，详细介绍了cvHaarFeature、cvHaarClassifier、cvHaarStageClassifier等关键组件，并解释了如何使用这些组件构建cvHaarClassifierCascade。通过理解这些概念，读者能够更有效地应用cvHaarDetectObjects进行目标检测任务。

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cvHaarDetectObjects 分类器结构以及操作函数

/*********************** Haar-like Object Detection structures **************************/
#define CV_HAAR_MAGIC_VAL    0x42500000
#define CV_TYPE_NAME_HAAR    "opencv-haar-classifier"

#define CV_IS_HAAR_CLASSIFIER( haar )                                                    \
    ((haar) != NULL &&                                                                   \
    (((const CvHaarClassifierCascade*)(haar))->flags & CV_MAGIC_MASK)==CV_HAAR_MAGIC_VAL)

#define CV_HAAR_FEATURE_MAX  3

typedef struct CvHaarFeature    //一个 harr 特征由 2－3 个具有相应权重的矩形组成
{
    int  tilted;
    struct
    {
        CvRect r;
        float weight;
    } rect[CV_HAAR_FEATURE_MAX];
}
CvHaarFeature;

typedef struct CvHaarClassifier  /分类器
{
    int count;
    CvHaarFeature* haar_feature;
    float* threshold;
    int* left;
    int* right;
    float* alpha;
}
CvHaarClassifier;

typedef struct CvHaarStageClassifier //
{
    int  count;
    float threshold;
    CvHaarClassifier* classifier;

    int next;
    int child;
    int parent;
}
CvHaarStageClassifier;

typedef struct CvHidHaarClassifierCascade CvHidHaarClassifierCascade;

typedef struct CvHaarClassifierCascade
{
    int  flags;
    int  count;
    CvSize orig_window_size;
    CvSize real_window_size;
    double scale;
    CvHaarStageClassifier* stage_classifier;
    CvHidHaarClassifierCascade* hid_cascade;
}
CvHaarClassifierCascade;

typedef struct CvAvgComp  //检测图像中的目标
{
    CvRect rect;
    int neighbors;
}
CvAvgComp;

struct CvFeatureTree;

#endif /*_CVTYPES_H_*/

/* End of file. */