[ADD] added comments to the classes FaceDetector and ObjectDetection

src/computervision/ObjectDetection.h

@@ -17,11 +17,33 @@ namespace computervision
 	private:
 
 	public:
+		/**
+		 * @brief default constructor of ObjectDetection
+		 * 
+		 */
 		ObjectDetection();
+		/**
+		 * @brief Initializes the object detection, captures a frame and modifies it
+		 *  so it is ready to use for object detection
+		 * 
+		 * @return return true if webcam is connected, returns false if it isn't
+		 */
 		bool setup();
-		void readWebcam();
+		/**
+		 * @brief Displays an image of the current webcam-footage
+		 * 
+		 */
 		void showWebcam();
+		/**
+		 * @brief Calculates the difference between two images
+		 *  and outputs an image that only shows the difference
+		 * 
+		 */
 		void calculateDifference();
+		/**
+		 * @brief Listens for keypresses and handles them
+		 * 
+		 */
 		void detect();
 
 	};