petrack.cpp

                    mControlWidget->exportMarkerID->isChecked(),
                    autoCorrectOnlyExport);

                debout << "export tracking data to " << dest << " (" << mTracker->size() << " person(s))..."
                       << std::endl;
                QTextStream outDat(&fileDat);
                mTrackerReal->exportDat(
                    outDat,
                    mControlWidget->trackAlternateHeight->checkState(),
                    mStereoWidget->stereoUseForExport->isChecked());
                fileDat.flush();
                fileDat.close();

                if(QFile::exists(dest))
                    QFile::remove(dest);

                if(!fileDat.copy(dest))
                    PCritical(
                        this,
                        tr("PeTrack"),
                        tr("Could not export tracking data.\n"
                           "Please try again!"));
                else
                    statusBar()->showMessage(tr("Saved tracking data to %1.").arg(dest), 5000);

                std::cout << " finished" << std::endl;
            }
            else if(dest.right(5) == ".trav")
            {
                // recalcHeight true, wenn personenhoehe ueber trackpoints neu berechnet werden soll (z.b. um waehrend
                // play mehrfachberuecksichtigung von punkten auszuschliessen, aenderungen in altitude neu in berechnung
                // einfliessen zu lassen)
                if(mControlWidget->trackRecalcHeight->checkState())
                {
                    mTracker->recalcHeight(mControlWidget->coordAltitude->value());
                }

                mTrackerReal->calculate(
                    mTracker,
                    mImageItem,
                    mControlWidget->getColorPlot(),
                    getImageBorderSize(),
                    mControlWidget->trackMissingFrames->checkState(),
                    mStereoWidget->stereoUseForExport->isChecked(),
                    mControlWidget->trackAlternateHeight->checkState(),
                    mControlWidget->coordAltitude->value(),
                    mStereoWidget->stereoUseCalibrationCenter->isChecked(),
                    mControlWidget->exportElimTp->isChecked(),
                    mControlWidget->exportElimTrj->isChecked(),
                    mControlWidget->exportSmooth->isChecked(),
                    mControlWidget->exportViewDir->isChecked(),
                    mControlWidget->exportAngleOfView->isChecked(),
                    mControlWidget->exportMarkerID->isChecked(),
                    autoCorrectOnlyExport);

                QTemporaryFile fileXml;
                if(!fileXml.open()) //! fileXml.open(QIODevice::WriteOnly | QIODevice::Text))
                {
                    PCritical(this, tr("PeTrack"), tr("Cannot open %1:\n%2.").arg(dest).arg(fileXml.errorString()));
                    return;
                }
                debout << "export tracking data to " << dest << " (" << mTracker->size() << " person(s))..."
                       << std::endl;
                // already done: mTrackerReal->calculate(mTracker, mImageItem, mControlWidget->getColorPlot(),
                // getImageBorderSize(), mControlWidget->trackMissingFrames->checkState());
                QTextStream outXml(&fileXml);
                outXml << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>" << Qt::endl;
                outXml << "<trajectoriesDataset>" << Qt::endl;
                outXml << "    <header version=\"1.0\">" << Qt::endl;
                outXml << "        <roomCaption>PeTrack: " << mAnimation->getFileBase() << "</roomCaption>" << Qt::endl;
                outXml << "        <roomID>0</roomID>" << Qt::endl;
                outXml << "        <agents>" << mTracker->size() << "</agents>" << Qt::endl;
                outXml << "        <frameRate>" << mAnimation->getFPS() << "</frameRate> <!--per second-->" << Qt::endl;
                // outXml << "        <timeStep>" << 1000./mAnimation->getFPS() << "</timeStep>   <!-- millisecond-->"
                // << endl; inverse von
                outXml << "        <timeFirstFrame sec=\"" << mAnimation->getFirstFrameSec() << "\" microsec=\""
                       << mAnimation->getFirstFrameMicroSec() << "\"/> <!-- " << mAnimation->getTimeString(0) << " -->"
                       << Qt::endl;
                outXml << "    </header>" << Qt::endl << Qt::endl;

                mTrackerReal->exportXml(
                    outXml,
                    mControlWidget->trackAlternateHeight->checkState(),
                    mStereoWidget->stereoUseForExport->isChecked());

                outXml << "</trajectoriesDataset>" << Qt::endl;
                fileXml.flush();
                fileXml.close();

                if(QFile::exists(dest))
                    QFile::remove(dest);

                if(!fileXml.copy(dest))
                    PCritical(
                        this,
                        tr("PeTrack"),
                        tr("Could not export tracking data.\n"
                           "Please try again!"));
                else
                    statusBar()->showMessage(tr("Saved tracking data to %1.").arg(dest), 5000);

                std::cout << " finished" << std::endl;
            }
            else
            { // wenn keine Dateiendung, dann wird trc und txt herausgeschrieben
                exportTracker(dest + ".trc");
                exportTracker(dest + ".txt");
            }
            lastFile = dest;
        }
    }
}

// fuer anschliessende groessenberechnung
void Petrack::playAll()
{
    int memPos  = mPlayerWidget->getPos();
    int progVal = 0;

    QProgressDialog progress("Playing whole sequence...", "Abort playing", 0, mAnimation->getNumFrames(), this);
    progress.setWindowModality(Qt::WindowModal); // blocks main window

    // vorwaertslaufen ab aktueller Stelle und trackOnlineCalc zum tracken nutzen
    do
    {
        progress.setValue(++progVal); // mPlayerWidget->getPos()
        qApp->processEvents();
        if(progress.wasCanceled())
            break;
    } while(mPlayerWidget->frameForward());

    mPlayerWidget->skipToFrame(memPos);
}

/**
 * @brief Activates tracking and reco; calcs through the video (in both ways)
 *
 * This method activates tracking and reco and plays the whole video (from current
 * frame on) till the end. Then, if mAutoBackTrack is set, it jumps back to the
 * largest first frame, i.e. the last time a new person was added/recognized, and
 * tracks backwards till the beginning of the video.
 *
 * The old settings for tracking and reco will be restored. No interaction with the
 * main window is possible for the time of tracking.
 */
void Petrack::trackAll()
{
    int                 memPos        = mPlayerWidget->getPos();
    int                 progVal       = 0;
    enum Qt::CheckState memCheckState = mControlWidget->trackOnlineCalc->checkState();
    enum Qt::CheckState memRecoState  = mControlWidget->performRecognition->checkState();

    mControlWidget->trackOnlineCalc->setCheckState(Qt::Checked);
    mControlWidget->performRecognition->setCheckState(Qt::Checked);

    QProgressDialog progress(
        "Tracking pedestrians through all frames...",
        "Abort tracking",
        0,
        2 * mAnimation->getNumFrames() - memPos,
        this);
    progress.setWindowModality(Qt::WindowModal); // blocks main window

    // vorwaertslaufen ab aktueller Stelle und trackOnlineCalc zum tracken nutzen
    do
    {
        progress.setValue(++progVal); // mPlayerWidget->getPos()
        qApp->processEvents();
        if(progress.wasCanceled())
            break;
    } while(mPlayerWidget->frameForward());

    if(mAutoBackTrack)
    {
        // zuruecksprinegn an die stelle, wo der letzte trackPath nicht vollstaendig
        // etwas spaeter, da erste punkte in reco path meist nur ellipse ohne markererkennung
        mControlWidget->trackOnlineCalc->setCheckState(Qt::Unchecked);
        mPlayerWidget->skipToFrame(mTracker->largestFirstFrame() + 5);
        mControlWidget->trackOnlineCalc->setCheckState(Qt::Checked);
        // progVal = 2*mAnimation->getNumFrames()-memPos-mPlayerWidget->getPos();
        progVal += mAnimation->getNumFrames() - mPlayerWidget->getPos();
        progress.setValue(progVal); // mPlayerWidget->getPos()

        // recognition abstellen, bis an die stelle, wo trackAll begann
        // UEBERPRUEFEN, OB TRACKPATH NICHT RECOGNITION PUNKTE UEBERSCHREIBT!!!!!!!!!!
        // repeate und repaetQual koennte temporaer umgestellt werden
        mControlWidget->performRecognition->setCheckState(Qt::Unchecked);

        // rueckwaertslaufen
        do
        {
            if(progVal + 1 < 2 * mAnimation->getNumFrames() - memPos)
                progress.setValue(++progVal); // mPlayerWidget->getPos()
            qApp->processEvents();
            if(progress.wasCanceled())
                break;
            if(mPlayerWidget->getPos() == memPos + 1)
                mControlWidget->performRecognition->setCheckState(Qt::Checked);
        } while(mPlayerWidget->frameBackward());

        // bei abbruch koennen es auch mPlayerWidget->getPos() frames sein, die bisher geschrieben wurden
        progress.setValue(2 * mAnimation->getNumFrames() - memPos);
    }

    if(mAutoTrackOptimizeColor)
        mTracker->optimizeColor();

    mControlWidget->performRecognition->setCheckState(memRecoState);
    mControlWidget->trackOnlineCalc->setCheckState(Qt::Unchecked);
    mPlayerWidget->skipToFrame(memPos);
    mControlWidget->trackOnlineCalc->setCheckState(memCheckState);
}

// default: (QPointF *pos=NULL, int pers=-1, int frame=-1);
int Petrack::winSize(QPointF *pos, int pers, int frame, int level)
{
    // default of mControlWidget->trackRegionScale->value() is 16, so that
    // a factor of 1.6 of the headsize is used
    if(level == -1)
        level = mControlWidget->trackRegionLevels->value();
    return (int) ((getHeadSize(pos, pers, frame) / pow(2., level)) * (mControlWidget->trackRegionScale->value() / 10.));
}

void Petrack::updateImage(bool imageChanged) // default = false (only true for new animation frame)
{
#ifdef TIME_MEASUREMENT
    // die reine Ausgabe  folgender Zeile kostet 1-2 Millisekunden
    //        "==========: "
    debout << "go  update: " << getElapsedTime() << endl;
#endif

    mCodeMarkerItem->resetSavedMarkers();

    static int  lastRecoFrame            = -10000;
    static bool borderChangedForTracking = false;

    // need semaphore to guarrantee that updateImage only called once
    // updateValue of control automatically calls updateImage!!!
    static QSemaphore semaphore(1);
    if(!mImg.empty() && mImage && semaphore.tryAcquire())
    {
        int frameNum = mAnimation->getCurrentFrameNum();

        setStatusTime();

        updateShowFPS();

        mImgFiltered = mImg;

        // have to store because evaluation sets the filter parameter to unchanged
        bool brightContrastChanged = mBrightContrastFilter.changed();
        bool swapChanged           = mSwapFilter.changed();
        bool borderChanged         = mBorderFilter.changed();
        bool calibChanged          = mCalibFilter->changed();

        // speicherverwaltung wird komplett von filtern ueberneommen

        // Filter anwenden, Reihenfolge wichtig - Rechenintensive moeglichst frueh
        // fkt so nur mit kopierenden filtern
#ifdef TIME_MEASUREMENT
        //        "==========: "
        debout << "vor filter: " << getElapsedTime() << endl;
#endif

        if(imageChanged || swapChanged)
            mImgFiltered = mSwapFilter.apply(mImgFiltered);
        else
            mImgFiltered = mSwapFilter.getLastResult();

        if(imageChanged || swapChanged || brightContrastChanged)
            mImgFiltered = mBrightContrastFilter.apply(mImgFiltered);
        else
            mImgFiltered = mBrightContrastFilter.getLastResult();

        if(imageChanged || swapChanged || brightContrastChanged || borderChanged)
            mImgFiltered = mBorderFilter.apply(mImgFiltered); // mIplImg
        else
            mImgFiltered = mBorderFilter.getLastResult();

#ifdef TIME_MEASUREMENT
        //        "==========: "
        debout << "nch filter: " << getElapsedTime() << endl;
#endif
        if(borderChanged)
            updateControlImage(mImgFiltered);
#ifndef STEREO_DISABLED
        if(imageChanged || swapChanged || brightContrastChanged || borderChanged || calibChanged)
        {
            if(mStereoContext)
                mStereoContext->init(mImgFiltered);
        }
#endif

#ifdef TIME_MEASUREMENT
        //        "==========: "
        debout << "vor  calib: " << getElapsedTime() << endl;
#endif
        if(imageChanged || swapChanged || brightContrastChanged || borderChanged || calibChanged)
            mImgFiltered = mCalibFilter->apply(mImgFiltered);
        else
            mImgFiltered = mCalibFilter->getLastResult();

#ifdef TIME_MEASUREMENT
        //        "==========: "
        debout << "nach calib: " << getElapsedTime() << endl;
#endif

        if(brightContrastChanged || swapChanged || borderChanged || calibChanged)
        {
            // abfrage hinzugenommen, damit beim laden von .pet bg-file angegeben werden kann fuer mehrere versuche und
            // beim nachladen von versuch nicht bg geloescht wird
            if(mBackgroundFilter.getFilename() != "")
                debout << "Warning: No background reset, because of explicit loaded background image!" << std::endl;
            else
                mBackgroundFilter
                    .reset(); // alle gesammelten hintergrundinfos werden verworfen und bg.changed auf true gesetzt
        }

        if(imageChanged || mBackgroundFilter.changed())
            mImgFiltered = mBackgroundFilter.apply(mImgFiltered);
        else
            mImgFiltered = mBackgroundFilter.getLastResult();

#ifdef TIME_MEASUREMENT
        //        "==========: "
        debout << "nach    bg: " << getElapsedTime() << endl;
#endif

        // delete track list, if intrinsic param have changed
        if(calibChanged && mTracker->size() > 0) // mCalibFilter.getEnabled() &&
        {
            // Evtl. nicht Tracker loeschen sondern entsprechend der neuen Calibration verschieben?!?!?
            mTracker->clear();
            mTracker->reset();
            if(!isLoading())
                debout << "Warning: deleted all tracking pathes because intrinsic parameters have changed."
                       << std::endl;
        }
        else
        {
#ifndef STEREO_DISABLED
            // calculate position in 3D space and height of person for "old" trackPoints, if checked "even"
            if(mStereoContext && mStereoWidget->stereoUseForHeightEver->isChecked() &&
               mStereoWidget->stereoUseForHeight->isChecked())
            {
                // buildt disparity picture if it should be used for height detection
                mStereoContext->getDisparity();

                mTracker->calcPosition(frameNum);
            }
#endif
        }
        if(borderChanged)
            borderChangedForTracking = true;
        // tracking vor recognition, da dann neu gefundene punkte mit getrackten bereits ueberprueft werden koennen
        if((trackChanged() || imageChanged) &&
           (mControlWidget->trackOnlineCalc->checkState() == Qt::Checked)) // borderChanged ???
        {
            // Rect for tracking area
            QRect roi(
                myRound(mTrackingRoiItem->rect().x() + getImageBorderSize()),
                myRound(mTrackingRoiItem->rect().y() + getImageBorderSize()),
                myRound(mTrackingRoiItem->rect().width()),
                myRound(mTrackingRoiItem->rect().height()));

            if(borderChangedForTracking)
            {
                cv::Size size;
                size.width  = mImgFiltered.cols;
                size.height = mImgFiltered.rows;
                mTracker->resize(size);

                mTrackingRoiItem->checkRect();
            }
#ifndef STEREO_DISABLED
            // buildt disparity picture if it should be used for height detection
            if(mStereoContext && mStereoWidget->stereoUseForHeight->isChecked())
                mStereoContext->getDisparity();
#endif

            cv::Rect rect;
            getRoi(mImgFiltered, roi, rect);
            // Ignore all tracking points outside of rect

            // if (mPrevIplImgFiltered) // wenn ein vorheriges bild vorliegt
            //  mPrevIplImgFiltered == NULL zeigt an, dass neue bildfolge && mPrevFrame == -1 ebenso
            //  winSize(), wurde mal uebergeben
#ifdef TIME_MEASUREMENT
            debout << "vor  track: " << getElapsedTime() << endl;
#endif
            //            debout << "test" << endl;
            int anz = mTracker->track(
                mImgFiltered,
                rect,
                frameNum,
                mControlWidget->trackRepeat->isChecked(),
                mControlWidget->trackRepeatQual->value(),
                getImageBorderSize(),
                mReco.getRecoMethod(),
                mControlWidget->trackRegionLevels->value(),
                getPedestriansToTrack());
#ifdef TIME_MEASUREMENT
            debout << "nach track: " << getElapsedTime() << endl;
#endif
            mControlWidget->trackNumberNow->setText(QString("%1").arg(anz));
            mTrackChanged            = false;
            borderChangedForTracking = false;
        }
        else
            mControlWidget->trackNumberNow->setText(QString("0"));
        // hier muesste fuer ameisen etc allgemeinABC.getPosList(...)

        if(((((lastRecoFrame + mControlWidget->recoStep->value()) <= frameNum) ||
             ((lastRecoFrame - mControlWidget->recoStep->value()) >= frameNum)) &&
            imageChanged) ||
           mAnimation->isCameraLiveStream() || swapChanged || brightContrastChanged || borderChanged || calibChanged ||
           recognitionChanged())
        {
#ifndef STEREO_DISABLED
            // buildt disparity picture if it should be used for height detection or recognition
            if(mStereoContext &&
               (mStereoWidget->stereoUseForHeight->isChecked() || mStereoWidget->stereoUseForReco->isChecked()))
                mStereoContext->getDisparity(); // wird nicht neu berechnet, wenn vor tracking schon berechnet wurde
#endif
            if(borderChanged)
                mRecognitionRoiItem->checkRect();

            if(mControlWidget->performRecognition->checkState() == Qt::Checked)
            {
                QRect rect(
                    myRound(mRecognitionRoiItem->rect().x() + getImageBorderSize()),
                    myRound(mRecognitionRoiItem->rect().y() + getImageBorderSize()),
                    myRound(mRecognitionRoiItem->rect().width()),
                    myRound(mRecognitionRoiItem->rect().height()));
                QList<TrackPoint> persList;
                auto              recoMethod = mReco.getRecoMethod();
#ifdef TIME_MEASUREMENT
                //        "==========: "
                debout << "vor   reco: " << getElapsedTime() << endl;
#endif
                if((recoMethod == reco::RecognitionMethod::Casern) || (recoMethod == reco::RecognitionMethod::Hermes) ||
                   (recoMethod == reco::RecognitionMethod::Color) || (recoMethod == reco::RecognitionMethod::Japan) ||
                   (recoMethod == reco::RecognitionMethod::MultiColor) ||
                   (recoMethod == reco::RecognitionMethod::Code)) // else
                {
                    persList = mReco.getMarkerPos(
                        mImgFiltered, rect, mControlWidget, getImageBorderSize(), getBackgroundFilter());
                }
#ifndef STEREO_DISABLED
                if(mStereoContext && mStereoWidget->stereoUseForReco->isChecked())
                {
                    PersonList pl;
                    pl.calcPersonPos(mImgFiltered, rect, &persList, mStereoContext, getBackgroundFilter(), markerLess);
                }
#endif
#ifdef TIME_MEASUREMENT
                //        "==========: "
                debout << "nach  reco: " << getElapsedTime() << endl;
#endif
                mTracker->addPoints(persList, frameNum, mReco.getRecoMethod());

                // folgendes lieber im Anschluss, ggf beim exportieren oder statt test direkt del:
                if(mStereoContext && mStereoWidget->stereoUseForReco->isChecked())
                    mTracker->purge(frameNum); // bereinigen wenn weniger als 0.2 recognition und nur getrackt

                mControlWidget->recoNumberNow->setText(QString("%1").arg(persList.size()));
                mRecognitionChanged = false;

                if(false) // hier muss Abfage hin ob kasernen marker genutzt wird
                    mControlWidget->getColorPlot()
                        ->replot(); // oder nur wenn tab offen oder wenn sich mtracker geaendert hat???
            }
            else
                mControlWidget->recoNumberNow->setText(QString("0"));
            lastRecoFrame = frameNum;
        }
        else
            mControlWidget->recoNumberNow->setText(QString("0"));

        mControlWidget->trackNumberAll->setText(
            QString("%1").arg(mTracker->size())); // kann sich durch reco und tracker aendern
        mControlWidget->trackShowOnlyNr->setMaximum(
            MAX(mTracker->size(), 1)); // kann sich durch reco und tracker aendern
        mControlWidget->trackNumberVisible->setText(
            QString("%1").arg(mTracker->visible(frameNum))); // kann sich durch reco und tracker aendern

        // in anzuzeigendes Bild kopieren
        // erst hier wird die bildgroesse von mimage an filteredimg mit border angepasst
        copyToQImage(*mImage, mImgFiltered);

        if(borderChanged)
            mImageItem->setImage(mImage);
        else
        {
            getScene()->update(); // repaint();
            // update pixel color (because image pixel moves)
            setStatusColor();
        }

#ifdef QWT
        mControlWidget->getAnalysePlot()->setActFrame(frameNum);
        if(mControlWidget->anaMarkAct->isChecked())
        {
            mControlWidget->getAnalysePlot()->replot();
        }
#endif

        semaphore.release();
    }
#ifdef TIME_MEASUREMENT
    //        "==========: "
    debout << "stp update: " << getElapsedTime() << endl;
#endif
}
void Petrack::updateImage(const cv::Mat &img)
{
    mImg = img;
    updateImage(true);
}


void Petrack::updateSequence()
{
    QImage *oldImage = mImage;

    QSize size = mAnimation->getSize();
    size.setWidth(size.width() + 2 * getImageBorderSize()); // border is inside the mImage!
    size.setHeight(size.height() + 2 * getImageBorderSize());
    mImage = new QImage(size, QImage::Format_RGB888); // 32); //wird in updateImage gemacht

    // set roi for recognition if image size changes or roi is zero
    // in oldImage steckt border drin, mIplImg->height zeigt noch auf altes ursprungsbild
    // mRecognitionRoiItem->rect().width() != 0 && oldImage == NULL wenn projektdatei eingelesen wird!!!!!
    if((mRecognitionRoiItem->rect().width() == 0) || // default while initialization, after that >= MIN_SIZE
       (oldImage && ((oldImage->width() != mImage->width()) || (oldImage->height() != mImage->height()))))
        mRecognitionRoiItem->setRect(-getImageBorderSize(), -getImageBorderSize(), mImage->width(), mImage->height());
    if((mTrackingRoiItem->rect().width() == 0) ||
       (oldImage && ((oldImage->width() != mImage->width()) || (oldImage->height() != mImage->height()))))
        mTrackingRoiItem->setRect(-getImageBorderSize(), -getImageBorderSize(), mImage->width(), mImage->height());

    cv::Size size2;
    size2.width  = mTrackingRoiItem->rect().width();
    size2.height = mTrackingRoiItem->rect().height();
    mTracker->init(size2);

    mPlayerWidget->setAnim(mAnimation);
    mPlayerWidget->skipToFrame(0);
    mImageItem->setImage(mImage); // wird in updateImage gemacht
    delete oldImage;
    mSaveSeqVidAct->setEnabled(true);
    mSaveSeqVidViewAct->setEnabled(true);
    mSaveSeqImgAct->setEnabled(true);
    mSaveSeqViewAct->setEnabled(true);
    mSaveImageAct->setEnabled(true);
    mSaveViewAct->setEnabled(true);
    mPrintAct->setEnabled(true);
    mResetSettingsAct->setEnabled(true);
}


/**
 * @brief Gets cm per pixel. Only recalculates when calculating head size.
 * @return cm per pixel
 */
double Petrack::getCmPerPixel() const
{
    return mCmPerPixel;
}

/**
 * @brief Sets the size of the circle of the average head circumference in pixel.
 *
 * Assumption for default calculation: <br>
 * 21cm avg head length <br>
 * default height of person according to mapDefaultHeigt <br>
 *
 * Default case recalculates mCmPerPixel
 *
 * If headsize get recalulated also mCmPerPixel will be calculated!
 * @see Petrack::getCmPerPixel
 * @param hS new headsize, if hS==-1 mHeadSize will be calculated instead of set
 */
void Petrack::setHeadSize(double hS)
{
    if(hS == -1)
    {
        mCmPerPixel = getImageItem()->getCmPerPixel();
        // debout << mCmPerPixel <<endl;
        mHeadSize = (HEAD_SIZE * mControlWidget->coordAltitude->value() /
                     (mControlWidget->coordAltitude->value() - mControlWidget->mapDefaultHeight->value())) /
                    mCmPerPixel;
    }
    else
        mHeadSize = hS;
}
// gibt Kopfgroesse zurueck
// default: (QPointF *pos=NULL, int pers=-1, int frame=-1)
double Petrack::getHeadSize(QPointF *pos, int pers, int frame)
{
    double z, h;

    if((pers >= 0) && (pers < mTracker->size()) && mTracker->at(pers).trackPointExist(frame))
    {
        if(mControlWidget->getCalibCoordDimension() == 0)
        {
            int         diff;
            cv::Point3f p3d = getExtrCalibration()->get3DPoint(
                cv::Point2f(mTracker->at(pers).trackPointAt(frame).x(), mTracker->at(pers).trackPointAt(frame).y()),
                mControlWidget->mapDefaultHeight->value());

            cv::Point2f p3d_x1 =
                getExtrCalibration()->getImagePoint(cv::Point3f(p3d.x + HEAD_SIZE * 0.5, p3d.y, p3d.z));
            cv::Point2f p3d_x2 =
                getExtrCalibration()->getImagePoint(cv::Point3f(p3d.x - HEAD_SIZE * 0.5, p3d.y, p3d.z));
            cv::Point2f p3d_y1 =
                getExtrCalibration()->getImagePoint(cv::Point3f(p3d.x, p3d.y + HEAD_SIZE * 0.5, p3d.z));
            cv::Point2f p3d_y2 =
                getExtrCalibration()->getImagePoint(cv::Point3f(p3d.x, p3d.y - HEAD_SIZE * 0.5, p3d.z));

            diff = (int) std::max(
                sqrt(pow(p3d_x2.x - p3d_x1.x, 2) + pow(p3d_x2.y - p3d_x1.y, 2)),
                sqrt(pow(p3d_y2.x - p3d_y1.x, 2) + pow(p3d_y2.y - p3d_y1.y, 2)));
            return diff; // < 8 ? 8 : diff;
        }
        else
        {
            z = mTracker->at(pers).trackPointAt(frame).sp().z();
            h = mTracker->at(pers).height();
            if(z > 0)
                return (HEAD_SIZE * mControlWidget->coordAltitude->value() / z) / getImageItem()->getCmPerPixel();
            else if(h > MIN_HEIGHT)
                return (HEAD_SIZE * mControlWidget->coordAltitude->value() /
                        (mControlWidget->coordAltitude->value() - h)) /
                       getImageItem()->getCmPerPixel();
            else
                return mHeadSize;
        }
    }

    if(pos != nullptr)
        return mHeadSize; // muss noch aus density map gelesen werden!!!
    else                  //(pos == NULL) && (pers == -1)
        return mHeadSize;
}

/**
 * @brief Return the user's selection of pedestrians/trajectories
 *
 * Only people selected via "show only people" (single person) or "show only
 * people list"(multiple persons) are going to be selected.
 *
 * @return All user selected pedestrian (empty for all pedestrians)
 */
QSet<int> Petrack::getPedestrianUserSelection()
{
    if(mControlWidget->trackShowOnly->checkState() == Qt::Checked)
    {
        QSet<int> onlyVisible;
        onlyVisible.insert(mControlWidget->trackShowOnlyNr->value() - 1);
        return onlyVisible;
    }
    if(mControlWidget->trackShowOnlyList->checkState() == Qt::Checked)
    {
        QStringList list = mControlWidget->trackShowOnlyNrList->text().split(",", Qt::SkipEmptyParts);
        QSet<int>   onlyVisible;
        foreach(QString s, list)
        {
            bool ok = false;
            int  nr = s.toInt(&ok);
            if(ok /* && nr <= maxPed && nr > 0*/) // einzelne ID
            {
                onlyVisible.insert(nr - 1);
            }
            else // error or IDs range (e.g. 1-3, 6-10, etc.)
            {
                QStringList range = s.split("-", Qt::SkipEmptyParts);
                int         last, first = range[0].toInt(&ok);

                if(ok /* && first <= maxPed && nr > 0*/)
                {
                    last = range[1].toInt(&ok);
                    if(ok /* && last <= maxPed && nr > 0*/)
                    {
                        if(first > last)
                        {
                            std::swap(first, last);
                        }

                        for(int i = first; i <= last; i++)
                        {
                            onlyVisible.insert(i - 1);
                        }
                    }
                }
            }
            if(!ok)
            {
                debout << "Warning: error while reading showOnlyVisible list from input line!" << std::endl;
            }
        }
        return onlyVisible; // in anzeige wird ab 1 gezaehlt, in datenstruktur ab 0
    }
    return QSet<int>();
}

/**
 * @brief Checks which pedestrians/trajectories are selected for evaluation.
 *
 * If "only for selected" is checked, then only selected people (@see
 * Petrack::getPedestrianUserSelection()) are going to be tracked, all people
 * otherwise.
 *
 * @return all trajectories which should be evaluated; empty when all should be evaluated
 */
QSet<int> Petrack::getPedestriansToTrack()
{
    if(mControlWidget->trackOnlySelected->checkState() == Qt::Checked)
    {
        return getPedestrianUserSelection();
    }

    return QSet<int>();
}

void Petrack::addManualTrackPointOnlyVisible(const QPointF &pos)
{
    int pers = addOrMoveManualTrackPoint(pos) + 1;
    if(pers == 0)
        pers = mTracker->size() + 1;
    pers = mControlWidget->trackShowOnlyNr->maximum();
    mControlWidget->trackShowOnlyNr->setValue(pers);
    mControlWidget->trackShowOnly->setChecked(true);
}

void Petrack::updateControlWidget()
{
    mControlWidget->trackNumberAll->setText(QString("%1").arg(mTracker->size()));
    mControlWidget->trackShowOnlyNr->setMaximum(MAX(mTracker->size(), 1));
    mControlWidget->trackNumberVisible->setText(QString("%1").arg(mTracker->visible(mAnimation->getCurrentFrameNum())));
}

void Petrack::splitTrackPerson(QPointF pos)
{
    mTracker->splitPersonAt((Vec2F) pos, mAnimation->getCurrentFrameNum(), getPedestrianUserSelection());
    updateControlWidget();
}

/**
 * @brief Lets the user add or move a TrackPoint manually
 *
 * There is an check inside addPoint which inhibits adding a point,
 * if only selected trajectories are visualized, since one wouldn't
 * see the newly added TrackPoint.
 *
 * @param pos pixel position of mouse on image
 * @return index of person whose point was moved; -1 if failed or new trajectory is started
 */
int Petrack::addOrMoveManualTrackPoint(const QPointF &pos)
{
    int        pers = -1;
    TrackPoint tP(Vec2F{pos}, 110); // 110 is higher than 100 (max. quality) and gets clamped to 100 after insertion
    // allows replacemet of every point (check for better quality always passes)
    mTracker->addPoint(
        tP, mAnimation->getCurrentFrameNum(), getPedestrianUserSelection(), mReco.getRecoMethod(), &pers);
    updateControlWidget();
    return pers;
}

// direction zeigt an, ob bis zum aktuellen (-1), ab dem aktuellen (1) oder ganzer trackpath (0)
// loeschen von Trackpoints einer Trajektorie
void Petrack::deleteTrackPoint(QPointF pos, int direction) // const QPoint &pos
{
    mTracker->delPoint((Vec2F) pos, direction, mAnimation->getCurrentFrameNum(), getPedestrianUserSelection());
    updateControlWidget();
}
void Petrack::editTrackPersonComment(QPointF pos)
{
    mTracker->editTrackPersonComment((Vec2F) pos, mAnimation->getCurrentFrameNum(), getPedestrianUserSelection());
    updateControlWidget();
}
void Petrack::setTrackPersonHeight(QPointF pos)
{
    mTracker->setTrackPersonHeight((Vec2F) pos, mAnimation->getCurrentFrameNum(), getPedestrianUserSelection());
    updateControlWidget();
}
void Petrack::resetTrackPersonHeight(QPointF pos)
{
    mTracker->resetTrackPersonHeight((Vec2F) pos, mAnimation->getCurrentFrameNum(), getPedestrianUserSelection());
    updateControlWidget();
}

// direction zeigt an, ob bis zum aktuellen (-1), ab dem aktuellen (1) oder ganzer trackpath (0)
// loeschen von Trackpoints aller Trajektorien
void Petrack::deleteTrackPointAll(int direction) // const QPoint &pos
{
    mTracker->delPointAll(direction, mAnimation->getCurrentFrameNum());
    updateControlWidget();
}

void Petrack::deleteTrackPointROI()
{
    mTracker->delPointROI();
    updateControlWidget();
    mScene->update();
}

void Petrack::deleteTrackPointInsideROI()
{
    mTracker->delPointInsideROI();
    updateControlWidget();
    mScene->update();
}
void Petrack::updateSourceInOutFrames()
{
    mPlayerWidget->setFrameInNum(mAnimation->getSourceInFrameNum());
    mPlayerWidget->setFrameOutNum(mAnimation->getSourceOutFrameNum());
}

// delta gibt menge an Umdrehungen und richtung an
void Petrack::skipToFrameWheel(int delta)
{
    mPlayerWidget->skipToFrame(mPlayerWidget->getPos() + delta);
}

void Petrack::setPeTrackVersion(const std::string &petrackVersion)
{
    mPetrackVersion = QString::fromStdString(petrackVersion);
}

void Petrack::setGitInformation(
    const std::string &gitCommitID,
    const std::string &gitCommitDate,
    const std::string &gitCommitBranch)
{
    mGitCommitID     = QString::fromStdString(gitCommitID);
    mGitCommitDate   = QString::fromStdString(gitCommitDate);
    mGitCommitBranch = QString::fromStdString(gitCommitBranch);
}

void Petrack::setCompileInformation(
    const std::string &compileTimeStamp,
    const std::string &compilerID,
    const std::string &compilerVersion)
{
    mCompileDate     = QString::fromStdString(compileTimeStamp);
    mCompilerID      = QString::fromStdString(compilerID);
    mCompilerVersion = QString::fromStdString(compilerVersion);
}

#include "moc_petrack.cpp"