#include "opencv2/opencv.hpp"
#include <iostream>

using namespace cv;
using namespace std;

bool emphasize(const Mat& src, Mat& dst, int blurW, int blurH, float factor) 
{
	if (src.empty()) 
	{
		return false;
	}
	if (src.channels() != 1)
	{
		return false;
	}
	Mat mean;
	blur(src, mean, Size(blurW, blurH));
	Mat srcFloat, meanFloat;
	src.convertTo(srcFloat, CV_32F);
	mean.convertTo(meanFloat, CV_32F);
	Mat dstFloat = (srcFloat - meanFloat)* factor + srcFloat;
	dstFloat.convertTo(dst, src.type());
	return true;
	
}

int main() 
{
	Mat src = imread("mreut.png", IMREAD_GRAYSCALE);
	Mat dst;
	int blurW(7), blurH(7);
	float factor = 1.5f;
	emphasize(src, dst, blurW, blurH, factor);
	
	return 0;
}