public static void detectMotion(Mat src, Mat dst) {
// temp = prevgray;
// prevgray = gray;
// gray = temp;
cvt_YUVtoGRAY(src, Sample1View.gray);
if (!Sample1View.prevgray.empty()) {
Video.calcOpticalFlowFarneback(
Sample1View.prevgray, Sample1View.gray, Sample1View.flow, 0.5, 3, 15, 3, 5, 1.2, 0);
Imgproc.cvtColor(Sample1View.prevgray, dst, Imgproc.COLOR_GRAY2RGB);
draw_opticflow(Sample1View.flow, dst, 36, new Scalar(0, 255, 0));
// cvt_YUVtoGRAY(src, dst);
}
// gray.copyTo(prevgray);
Sample1View.prevgray = Sample1View.gray;
try {
Thread.sleep(20);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// cvt_YUVtoGRAY(src, dst);
}
void hpTrack(Mat mRgba, WorkingHeadPose hp, Rect[] facesArray) {
MatOfByte status = new MatOfByte();
// Mat prev=new Mat(mRgba.width(),mRgba.height(),CvType.CV_8UC1);
// Mat curr=new Mat(mRgba.width(),mRgba.height(),CvType.CV_8UC1);
Mat prev = new Mat(mRgba.size(), CvType.CV_8UC1);
Mat curr = new Mat(mRgba.size(), CvType.CV_8UC1);
MatOfPoint2f tmpCorners = new MatOfPoint2f();
MatOfFloat err = new MatOfFloat();
int i, j, count;
TermCriteria optical_flow_termination_criteria =
new TermCriteria(); // =(TermCriteria.MAX_ITER|TermCriteria.EPS,20,.3);// (
// CV_TERMCRIT_ITER | CV_TERMCRIT_EPS, 20, .3 );
optical_flow_termination_criteria.epsilon = .3;
optical_flow_termination_criteria.maxCount = 20;
// Good features to track
Imgproc.cvtColor(hp.previousFrame, prev, Imgproc.COLOR_RGBA2GRAY, 0);
Imgproc.cvtColor(mRgba, curr, Imgproc.COLOR_RGBA2GRAY, 0);
// Video.calcOpticalFlowPyrLK(prev, curr,hp.previousCorners,tmpCorners,status,new MatOfFloat(),
// new Size(10,10), 3,optical_flow_termination_criteria, 0, 1);
// http://stackoverflow.com/questions/12561292/android-using-calcopticalflowpyrlk-with-matofpoint2f
if (hp.previousCorners.total() > 0)
// Video.calcOpticalFlowPyrLK(prev, curr,hp.previousCorners,tmpCorners,status,new
// MatOfFloat(), new Size(11,11),5,optical_flow_termination_criteria, 0, 1);
Video.calcOpticalFlowPyrLK(prev, curr, hp.previousCorners, tmpCorners, status, err);
/*Point[] pointp = hp.previousCorners.toArray();
Point[] pointn = tmpCorners.toArray();
for (Point px : pointp)
{ Core.circle(mRgba, px, 15, new Scalar(255,0,0)); }
for (Point py : pointn)
{ Core.circle(mRgba, py, 5, new Scalar(0,0,255)); }
*/
// Point a,b;
// a=new Point();
// b=new Point();
/*if(TempFace.length>0)
{
for( i = 0; i < hp.tempcorners.total(); i++ )
{
//center.x=facearray1[0].x + hp.corners.toList().get(i).x;
//center.y=facearray1[0].y + hp.corners.toList().get(i).y;
Point a = new Point(TempFace[0].tl().x+hp.tempcorners.toList().get(i).x,TempFace[0].tl().x+hp.tempcorners.toList().get(i).y);
Point b= new Point(TempFace[0].tl().y+tmpCorners.toList().get(i).x,TempFace[0].tl().y+tmpCorners.toList().get(i).y);
Core.line(mRgba, a,b, new Scalar(255,0,0),2);
}
}
*/
count = 0;
for (i = 0; i < hp.cornerCount; i += 1) {
if (i == hp.corners.total()) break;
if (status.toList().get(i) == 1) {
count += 1;
}
}
// Replace headPose->corners and headPose->modelPoints
// imran
// http://stackoverflow.com/questions/11273588/how-to-convert-matofpoint-to-matofpoint2f-in-opencv-java-api
MatOfPoint2f corners2f = new MatOfPoint2f();
hp.corners.convertTo(corners2f, CvType.CV_32FC2);
List<Point> plist = new ArrayList<Point>();
for (i = 0, j = 0; i < hp.cornerCount; i += 1) {
if (i == hp.corners.total()) break;
if (status.toList().get(i) == 1) {
// plist.add(tmpCorners.toList().get(i));
corners2f
.toList()
.set(j, tmpCorners.toList().get(i)); // .get(i)=tmpCorners.toList().get(i);
hp.modelPoints.toList().set(j, hp.modelPoints.toList().get(i));
// =hp.modelPoints.toList().get(i);
// hp.corners[j] = tmpCorners[i];
// headPose->modelPoints[j] = headPose->modelPoints[i];
j += 1;
}
}
// corners2f.fromList(plist);
corners2f.convertTo(hp.corners, CvType.CV_32S);
Log.i("CournerCount", "Reassigning" + count);
hp.cornerCount = count;
}
