Mat rgb;
		// downsample and use it for processing
		pyrDown(large, rgb );
		pyrDown(rgb, rgb);
		pyrDown(rgb, rgb);
		//pyrDown()

		Mat small;
		cvtColor(rgb, small, CV_BGR2GRAY);
		// morphological gradient
		Mat grad;
		Mat morphKernel = getStructuringElement(MORPH_ELLIPSE, Size(10, 10));
		morphologyEx(small, grad, MORPH_GRADIENT, morphKernel);
		// binarize
		Mat bw;
		threshold(grad, bw, 0.0, 255.0, THRESH_BINARY | THRESH_OTSU);
		// connect horizontally oriented regions

		Mat connected;
		morphKernel = getStructuringElement(MORPH_RECT, Size(1, 5));
		morphologyEx(bw, connected, MORPH_CLOSE, morphKernel);
		// find contours
		Mat mask = Mat::zeros(bw.size(), CV_8UC1);
		vector<vector<Point>> contours;
		vector<Vec4i> hierarchy;
		findContours(connected, contours, hierarchy, CV_RETR_CCOMP, CV_CHAIN_APPROX_SIMPLE, Point(0, 0));
		// filter contours

		int biggest = getMaxAreaContourId(contours);

		std::vector<int> uniqueColors;
		std::vector<Mat> ROI_store;

		std::map<cv::Mat, int> colorMap;

		for (int idx = 0; idx >= 0; idx = hierarchy[idx][0])
		{
			Rect rect = boundingRect(contours[idx]);
			Mat maskROI(mask, rect);
			maskROI = Scalar(0, 0, 0);
			// fill the contour


			drawContours(mask, contours, idx, Scalar(255, 255, 255), CV_FILLED);
			// ratio of non-zero pixels in the filled region
			double r = (double)countNonZero(maskROI) / (rect.width*rect.height);

			cout << "hello mary louZ" << endl;
			cout << "RGB width : " << rgb.cols<< endl;
			cout << "Rect width : " << rect.width << endl;

			if (r > .35
				/*
				// may work on ios but not here
				&& (rgb.cols /4 < rect.width < rgb.cols / 2)
				&& (rgb.rows / 4 < rect.height < rgb.rows / 2)
				*/

				&& (inRange(rgb.cols / 4, rgb.cols / 2, rect.width))

				//|| inRange(rgb.rows / 4, rgb.rows / 2, rect.height))
				//&& (rgb.cols / 4 < rect.width) &&  (rect.width < rgb.cols / 2)
				//&& (rgb.rows / 4 < rect.height) && (rect.height < rgb.rows / 2)

				//&& (800 > rect.width) && (800 > rect.height)
				//&& ( 10 <= rect.width - rect.height <= 10)

				)
			{