//Number of samples of the image to take
#define SAMPLES 600
+// Canny Edge algorithm variables
+#define BLUR 5
+#define LOWTHRESHOLD 30
+#define RATIO 3
+#define KERNELSIZE 3
+
+//Scaling factor required to change from pixels to um
+#define SCALE 1 // Note camera has not been calibrated yet so result will be in pixels
+
+/**
+ * Enum of Dilatometer IDs
+ */
+typedef enum
+{
+ DIL_POS,
+ DIL_DIFF
+} DilatometerID;
+
extern bool Dilatometer_Init(const char * name, int id); // Initialise the dilatometer
extern bool Dilatometer_Cleanup(int id); // Cleanup
extern bool Dilatometer_Read(int id, double * value); // Read the Dilatometer