WeakClassifierHoG.h

#ifndef WEAKCLASSIFIER_HOG_HEADER
#define WEAKCLASSIFIER_HOG_HEADER

#include "WeakClassifier.h"
#include "HoGFeature.h"

class WeakClassifierHoG : public WeakClassifier {
public:

    WeakClassifierHoG(const Feature &reference, float min, float max,
        int offsetW, int offsetH, int w, int h, 
        float *histogram);
    ~WeakClassifierHoG();

    float Evaluate(const IntegralImage *intImage, const Rect &roi, float scale = 1.0f);

    float EvaluateThre(const IntegralImage *intImage, const Rect &roi, float scale = 1.0f);

private:
    // A HoG feature.
    HoGFeature *hogFeature;

    // A reference HoG feature.
    Feature reference;

    // A Feature to store the result from HoG feature extractor.
    Feature result;

    float histogram[100];
    float min, max;

    // Find the district.
    inline int District(float value, float min, float max) const {
        if (value <= min) return 0;
        if (value >= max) return 99;

        float step = (max - min) * 0.01f;

        for (int i = 0; i < 100; i++)
            if (value >= min + step * i - 0.000001 && value <= min + step * (i + 1) + 0.000001)
                return i;

        printf("WeakClassifier::District: We can't find the district: min = %f, max = %f, value = %f\n", min, max, value);
        exit(0);
        return -1;
    }

};

#endif