some tracked objects flying?

[xinsuinizhuan]

when i set the settings.m_maxTraceLength long, the object disable will fly

TrackerSettings settings;
settings.SetDistance(tracking::DistRects);
settings.m_kalmanType = tracking::KalmanLinear;
settings.m_filterGoal = tracking::FilterCenter;
settings.m_lostTrackType = tracking::TrackNone; // Use visual objects tracker for collisions resolving. Used if m_filterGoal == tracking::FilterRect
settings.m_matchType = tracking::MatchHungrian;
settings.m_useAcceleration = false; // Use constant acceleration motion model
settings.m_dt = settings.m_useAcceleration ? 0.05f : 0.5f; // Delta time for Kalman filter
settings.m_accelNoiseMag = 0.1f; // Accel noise magnitude for Kalman filter
settings.m_distThres = 0.95f; // Distance threshold between region and object on two frames
settings.m_minAreaRadiusPix = -1.f;
settings.m_minAreaRadiusK = 0.8f;
settings.m_useAbandonedDetection = false;
settings.m_maximumAllowedSkippedFrames = cvRound(2 * m_videofps); // Maximum allowed skipped frames
settings.m_maxTraceLength = cvRound(40 * m_videofps); // Maximum trace length

[Nuzhny007]

Hi!
It looks like a false positive detection. Or not?
Another way to filter tracking errors:

track.IsRobust(4,                                    // Minimal trajectory size
			0.85f,                              // Minimal ratio raw_trajectory_points / trajectory_lenght
			cv::Size2f(0.1f, 10.0f),      // Min and max ratio: width / height
			1) <---------------------- set here a small value

[xinsuinizhuan]

ok，now its work. But where is the tracked object status，Confirmed，mis and remove? If the object is Confirmed need to do some other operate

[Nuzhny007]

For missed objects used not very good named variable - TrajectoryPoint::m_hasRaw. And it drawn circle on trajectory:
https://github.com/Smorodov/Multitarget-tracker/blob/master/example/VideoExample.cpp#L575C22-L575C30