Finished exercise 4 on sheet3

Signed-off-by: Jim Martens <github@2martens.de>

ccv/sheet3/gauss_pyramid.h

@@ -0,0 +1,17 @@
+#ifndef SHEET3_GAUSS_PYRAMID_H
+#define SHEET3_GAUSS_PYRAMID_H
+
+#include <opencv2/opencv.hpp>
+
+class gauss_pyramid
+{
+private:
+    std::vector<cv::Mat> _layers;
+public:
+    gauss_pyramid();
+    gauss_pyramid(cv::Mat img, int number_of_layers);
+    cv::Mat get(int layer);
+};
+
+
+#endif //SHEET3_GAUSS_PYRAMID_H