Recover git state after .git was lost

src/normalize.h

@@ -0,0 +1,48 @@
+/**
+* Lubricant Detecter
+* Copyright (C) 2021 Carl Klemm
+*
+* This program is free software; you can redistribute it and/or
+* modify it under the terms of the GNU General Public License
+* version 3 as published by the Free Software Foundation.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program; if not, write to the
+* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+* Boston, MA  02110-1301, USA.
+*/
+
+#pragma once
+#include <opencv2/core/ocl.hpp>
+#include <opencv2/imgproc.hpp>
+#include <stdint.h>
+
+inline bool normalize(cv::Mat& image, const cv::Mat& referance)
+{
+	cv::Mat labReferance;
+	cv::cvtColor(referance, labReferance, cv::COLOR_BGR2Lab);
+	std::vector<cv::Mat> labPlanesRef(3);
+	cv::split(labReferance, labPlanesRef);
+
+	cv::Scalar mean = cv::mean(labPlanesRef[0]);
+	labPlanesRef[0].convertTo(labPlanesRef[0], CV_16SC1);
+	
+	labPlanesRef[0] = labPlanesRef[0] - cv::Scalar(mean);
+	
+	
+	cv::Mat labImage;
+	cv::cvtColor(image, labImage, cv::COLOR_BGR2Lab);
+	
+	std::vector<cv::Mat> labPlanes(3);
+	cv::split(labImage, labPlanes);
+	
+	cv::subtract(labPlanes[0], labPlanesRef[0], labPlanes[0], cv::noArray(), CV_8UC1);
+	cv::merge(labPlanes, labImage);
+	cv::cvtColor(labImage, image,  cv::COLOR_Lab2BGR);
+	return true;
+}