opencv/modules/contrib/src/colortracker.cpp

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#include "precomp.hpp"
#include "opencv2/contrib/hybridtracker.hpp"
using namespace cv;
using namespace std;
CvMeanShiftTracker::CvMeanShiftTracker(CvMeanShiftTrackerParams _params) : params(_params)
{
}
CvMeanShiftTracker::~CvMeanShiftTracker()
{
}
void CvMeanShiftTracker::newTrackingWindow(Mat image, Rect selection)
{
hist.release();
int channels[] = { 0, 0 , 1, 1};
float hrange[] = { 0, 180 };
float srange[] = { 0, 1 };
const float* ranges[] = {hrange, srange};
cvtColor(image, hsv, CV_BGR2HSV);
inRange(hsv, Scalar(0, 30, MIN(10, 256)), Scalar(180, 256, MAX(10, 256)), mask);
hue.create(hsv.size(), CV_8UC2);
mixChannels(&hsv, 1, &hue, 1, channels, 2);
Mat roi(hue, selection);
Mat maskroi(mask, selection);
int ch[] = {0, 1};
int chsize[] = {32, 32};
calcHist(&roi, 1, ch, maskroi, hist, 1, chsize, ranges);
normalize(hist, hist, 0, 255, CV_MINMAX);
prev_trackwindow = selection;
}
RotatedRect CvMeanShiftTracker::updateTrackingWindow(Mat image)
{
int channels[] = { 0, 0 , 1, 1};
float hrange[] = { 0, 180 };
float srange[] = { 0, 1 };
const float* ranges[] = {hrange, srange};
cvtColor(image, hsv, CV_BGR2HSV);
inRange(hsv, Scalar(0, 30, MIN(10, 256)), Scalar(180, 256, MAX(10, 256)), mask);
hue.create(hsv.size(), CV_8UC2);
mixChannels(&hsv, 1, &hue, 1, channels, 2);
int ch[] = {0, 1};
calcBackProject(&hue, 1, ch, hist, backproj, ranges);
backproj &= mask;
prev_trackbox = CamShift(backproj, prev_trackwindow, TermCriteria(CV_TERMCRIT_EPS | CV_TERMCRIT_ITER, 10, 1));
int cols = backproj.cols, rows = backproj.rows, r = (MIN(cols, rows) + 5) / 6;
prev_trackwindow = Rect(prev_trackwindow.x - r, prev_trackwindow.y - r, prev_trackwindow.x + r,
prev_trackwindow.y + r) & Rect(0, 0, cols, rows);
prev_center.x = (float)(prev_trackwindow.x + prev_trackwindow.width / 2);
prev_center.y = (float)(prev_trackwindow.y + prev_trackwindow.height / 2);
#ifdef DEBUG_HYTRACKER
ellipse(image, prev_trackbox, Scalar(0, 0, 255), 1, CV_AA);
#endif
return prev_trackbox;
}
Mat CvMeanShiftTracker::getHistogramProjection(int type)
{
Mat ms_backproj_f(backproj.size(), type);
backproj.convertTo(ms_backproj_f, type);
return ms_backproj_f;
}
void CvMeanShiftTracker::setTrackingWindow(Rect window)
{
prev_trackwindow = window;
}
Rect CvMeanShiftTracker::getTrackingWindow()
{
return prev_trackwindow;
}
RotatedRect CvMeanShiftTracker::getTrackingEllipse()
{
return prev_trackbox;
}
Point2f CvMeanShiftTracker::getTrackingCenter()
{
return prev_center;
}