Create edgeDetection.cpp

Author: niconielsen32

edgeDetection.cpp

@@ -0,0 +1,91 @@
+#include <iostream>
+#include <vector>
+
+#include <opencv2/core.hpp>
+#include <opencv2/highgui.hpp>
+#include <opencv2/imgproc.hpp>
+
+using namespace std;
+using namespace cv;
+
+Mat img, gray, blurred, edge;
+
+// Laplacian Operator Variables
+int kernel_size = 3;
+int ddepth = CV_16S;
+
+// Canny Edge Detection Variables
+int lowerThreshold = 0;
+int max_lowThreshold = 100;
+
+
+void laplacianDetection() {
+
+    GaussianBlur(gray,
+        blurred,
+        cv::Size(3, 3),  // smoothing window width and height in pixels
+        3);              // how much the image will be blurred
+
+    Laplacian(blurred,
+        edge,
+        ddepth,         // Depth of the destination image
+        kernel_size);    // Size of the kernel
+
+    // converting back to CV_8U
+    convertScaleAbs(edge, edge);
+}
+
+
+void CannyThreshold(int, void*) {
+
+    GaussianBlur(gray,
+        blurred,
+        cv::Size(3, 3),  // smoothing window width and height in pixels
+        3);              // how much the image will be blurred
+
+    Canny(blurred,
+        edge,
+        lowerThreshold, // lower threshold
+        50);           // higher threshold
+
+    imshow("Edge Detection", edge);
+}
+
+
+
+int main() {
+
+    img = imread("/Users/kemik/OneDrive/Skrivebord/lenna.png");
+
+    if (img.empty())
+    {
+        cout << "Could not open or find the image!" << endl;
+        return -1;
+    }
+
+    cvtColor(img, gray, COLOR_BGR2GRAY);
+
+    cv::namedWindow("Original", WINDOW_AUTOSIZE);
+    cv::namedWindow("Gray", WINDOW_AUTOSIZE);
+    cv::namedWindow("Blurred", WINDOW_AUTOSIZE);
+    cv::namedWindow("Edge Detection", WINDOW_AUTOSIZE);
+
+
+    // Canny Edge Detector
+    createTrackbar("Min Threshold:", "Edge Detection", &lowerThreshold, max_lowThreshold, CannyThreshold);
+    CannyThreshold(0,0);
+
+    // Laplacian Edge Detector
+    //laplacianDetection();
+
+    imshow("Original", img);
+    imshow("Gray", gray);
+    imshow("Blurred", blurred);
+    //imshow("Edge Detection", edge);
+
+    waitKey(0);
+  
+    
+
+  return 0;
+}