Method InitTracker

example/CarsCounting.cpp:174–225

\brief CarsCounting::InitTracker \param grayFrame

/// \param grayFrame
///
bool CarsCounting::InitTracker(cv::UMat frame)
{
    if (!m_trackerSettingsLoaded)
        return false;

    if (m_drawHeatMap)
    {
        if (frame.channels() == 3)
            m_keyFrame = frame.getMat(cv::ACCESS_READ).clone();
        else
            cv::cvtColor(frame, m_keyFrame, cv::COLOR_GRAY2BGR);
        m_heatMap = cv::Mat(m_keyFrame.size(), CV_32FC1, cv::Scalar::all(0));
    }

    const int minStaticTime = 5;

    TrackerSettings settings;
    settings.SetDistance(tracking::DistJaccard);
    settings.m_kalmanType = tracking::KalmanLinear;
    settings.m_filterGoal = tracking::FilterCenter;
    settings.m_lostTrackType = tracking::TrackCSRT; // Use KCF tracker for collisions resolving. Used if m_filterGoal == tracking::FilterRect
    settings.m_matchType = tracking::MatchHungrian;
    settings.m_dt = 0.3f;                           // Delta time for Kalman filter
    settings.m_accelNoiseMag = 0.2f;                // Accel noise magnitude for Kalman filter
    settings.m_distThres = 0.7f;                    // Distance threshold between region and object on two frames
    settings.m_minAreaRadiusPix = frame.rows / 20.f;
    settings.m_maximumAllowedLostTime = 2.;         // Maximum allowed lost time

    settings.AddNearTypes(TypeConverter::Str2Type("car"), TypeConverter::Str2Type("bus"), false);
    settings.AddNearTypes(TypeConverter::Str2Type("car"), TypeConverter::Str2Type("truck"), false);
    settings.AddNearTypes(TypeConverter::Str2Type("person"), TypeConverter::Str2Type("bicycle"), true);
    settings.AddNearTypes(TypeConverter::Str2Type("person"), TypeConverter::Str2Type("motorbike"), true);

    settings.m_useAbandonedDetection = false;
    if (settings.m_useAbandonedDetection)
    {
        settings.m_minStaticTime = minStaticTime;
        settings.m_maxStaticTime = 60;
        settings.m_maximumAllowedLostTime = settings.m_minStaticTime;      // Maximum allowed lost time
        settings.m_maxTraceLength = 2 * settings.m_maximumAllowedLostTime; // Maximum trace length
    }
    else
    {
        settings.m_maximumAllowedLostTime = 10.; // Maximum allowed lost time
        settings.m_maxTraceLength = 4.;          // Maximum trace length
    }

    m_tracker = BaseTracker::CreateTracker(settings);

    ReadGeobindings(frame.size());
    return true;
}

///
/// \brief CarsCounting::DrawData