Introduce variables for canny stuff instead of hardcoding

Processing/processing.cpp

@@ -17,16 +17,16 @@ static double angle( Point pt1, Point pt2, Point pt0 )
     return (dx1*dx2 + dy1*dy2)/sqrt((dx1*dx1 + dy1*dy1)*(dx2*dx2 + dy2*dy2) + 1e-10);
 }
 
-void Processing::processImage(Mat& inputPicture, int thresholdValue, int gaussKernelSize)
+void Processing::processImage(Mat& inputPicture, int thresholdBinary, int gaussKernelSize, int thresholdCanny1, int thresholdCanny2, int apertureSizeCanny)
 {
     //Idea here is: Processing module consists of two methods:
     // One (this) to do all kinds of stuff to the picture (grayscale conversion, threshold, gauss etc etc)
     // And one (the other one) to segment the lines.
     // No return value here as the input is passed by reference -> directly modified.
     cvtColor(inputPicture, inputPicture, COLOR_BGR2GRAY);
-    threshold(inputPicture, inputPicture, thresholdValue, 255, THRESH_BINARY);
+    threshold(inputPicture, inputPicture, thresholdBinary, 255, THRESH_BINARY);
     GaussianBlur(inputPicture, inputPicture, Size(gaussKernelSize, gaussKernelSize), 0); 
-    Canny(inputPicture, inputPicture, 50, 100, 3);
+    Canny(inputPicture, inputPicture, thresholdCanny1, thresholdCanny2, apertureSizeCanny);
 }
 
 std::vector<Vec4i> Processing::calculateLineSegments(const Mat& inputPicture)

Processing/processing.h

@@ -19,7 +19,7 @@ public:
     // End und Anfangspunkt analysieren und Winkel und Ausrichtung der Linie extrahieren (Abstand des untersten Punktes von der Mitte)
     ~Processing();
 
-    void processImage(Mat& inputPicture, int thresholdValue, int gaussKernelSize);
+    void processImage(Mat& inputPicture, int thresholdBinary, int gaussKernelSize, int thresholdCanny1, int thresholdCanny2, int apertureSizeCanny);
 
     std::vector<Vec4i> calculateLineSegments(const Mat& inputPicture);
 };