minor fixes

git-svn-id: http://find-object.googlecode.com/svn/trunk/find_object@366 620bd6b2-0a58-f614-fd9a-1bd335dccda9

include/find_object/MainWindow.h

@@ -50,7 +50,7 @@ public Q_SLOTS:
 	void startProcessing();
 	void stopProcessing();
 	void pauseProcessing();
-	void update(const cv::Mat & image = cv::Mat());
+	void update(const cv::Mat & image);
 
 private Q_SLOTS:
 	void loadSettings();