[Sheet3] Finished exercises 1 through 3

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

ccv/sheet3/main.cpp

@@ -0,0 +1,24 @@
+#include <opencv2/opencv.hpp>
+
+int main(int argc, char** argv ) {
+  if ( argc != 2 )
+  {
+    printf("usage: main.out <Image_Path>\n");
+    return -1;
+  }
+
+  // exercise 2
+  cv::Mat image;
+  image = cv::imread(argv[1], cv::ImreadModes::IMREAD_COLOR);
+  int kmax = 50;
+  cv::Mat Matrix_convoluted;
+  for (int k = 3; k < kmax; k+=2) {
+    cv::GaussianBlur(image, Matrix_convoluted, cv::Size(k, k), 0, 0, cv::BORDER_CONSTANT);
+    std::string imageName = "Kernel (";
+    imageName = imageName + std::to_string(k) + ", " + std::to_string(k) + ")";
+    cv::imshow(imageName, Matrix_convoluted);
+    cv::waitKey(500);
+  }
+
+  return 0;
+}