--- a/include/Motion.hpp	Mon Feb 20 19:32:27 2012 -0500
+++ b/include/Motion.hpp	Fri Mar 02 19:32:54 2012 -0500
@@ -16,7 +16,7 @@
     before saving. */
 class FeatureTrajectory {
 public:
-  FeatureTrajectory(const int& frameNum, const cv::Point2f& p, const cv::Mat& homography);
+  FeatureTrajectory(const unsigned int& frameNum, const cv::Point2f& p, const cv::Mat& homography);
 
   FeatureTrajectory(TrajectoryPoint2fPtr& _positions, TrajectoryPoint2fPtr& _velocities);
 
@@ -29,9 +29,6 @@
   unsigned int getId(void) const { return positions->getId();}
   void setId(const unsigned int& id) { positions->setId(id);velocities->setId(id);}
 
-  void setLost(void) { lost = true;}
-  bool isLost(void) { return lost;}
-
   unsigned int getFirstInstant(void) {return firstInstant;}
   unsigned int getLastInstant(void) {return lastInstant;}
 
@@ -47,7 +44,7 @@
   /// computes the distance according to the Beymer et al. algorithm
   bool minMaxSimilarity(const FeatureTrajectory& ft, const int& firstInstant, const int& lastInstant, const float& connectionDistance, const float& segmentationDistance);
 
-  void addPoint(const int& frameNum, const cv::Point2f& p, const cv::Mat& homography);
+  void addPoint(const unsigned int& frameNum, const cv::Point2f& p, const cv::Mat& homography);
 
   void shorten(void);
 
@@ -60,7 +57,6 @@
   friend std::stringstream& operator<<(std::stringstream& out, const FeatureTrajectory& ft);
 
 protected:
-  bool lost; /// \todo remove
   /// first frame number
   unsigned int firstInstant;
   /// last frame number