split into many files

add better outlier rejection
add normalization
add background removal

drawing.h

@@ -0,0 +1,6 @@
+#pragma once
+#include <opencv2/core/ocl.hpp>
+
+void drawRows(cv::Mat& image, const std::vector< std::vector<cv::Point2f > >& rows);
+
+void drawEllipses(cv::Mat& image, const std::vector<cv::RotatedRect>& ellipses );