GrayScaleIntegralImage.h

#ifndef GRAY_SCALE_INTEGRAL_IMAGE_HEADER
#define GRAY_SCALE_INTEGRAL_IMAGE_HEADER

#include "IntegralImage.h"

class GrayScaleIntegralImage : public IntegralImage {
public:
    // The img should be CV_8UC1
    GrayScaleIntegralImage(const cv::Mat &img);
    GrayScaleIntegralImage(int w, int h);
    ~GrayScaleIntegralImage();

    // Calculate the integral image.
    // Should be called if the img changed.
    void CalculateInt(const cv::Mat &img);

    unsigned int GetSum(const Rect &roi) const;

private:
    // The integral image data.
    unsigned int *intImage;
};


#endif