Hi everybody ! I used Inrange() function to detect tennis ball from webcam (this ball is green), after I used this function I got an binary image that is very rough. Here is my code : void morphOps(Mat &thresh) {
Mat erodeElement = getStructuringElement( MORPH_RECT,Size2i (2,2));
Mat dilateElement = getStructuringElement( MORPH_RECT,Size2i (20,20));
erode(thresh,thresh,erodeElement);
erode(thresh,thresh,erodeElement);
dilate(thresh,thresh,dilateElement);
dilate(thresh,thresh,dilateElement);
return;
}
void main() { VideoCapture capture(0); Mat src,dst,hsv; int red,grn,blu,red1,grn1,blu1 =0; namedWindow("Window"); namedWindow("Window1"); createTrackbar("red","Window",&red,255); createTrackbar("green","Window",&grn,255); createTrackbar("blue","Window",&blu,255); createTrackbar("red1","Window1",&red1,255); createTrackbar("green1","Window1",&grn1,255); createTrackbar("blue1","Window1",&blu1,255);
while(true)
{
capture >> src;
cvtColor(src,hsv,COLOR_BGR2HSV);
Scalar lower(red,grn,blu);
Scalar upper(red1,grn1,blu1);
inRange(hsv,lower,upper,dst);
//morphOps(dst);
imshow("Input Image",hsv);
imshow("Output Image",dst);
char c= waitKey(10);
if(c==27) break;
}
This is Input image after transforming to HSV color C:\fakepath\input.png and the result [C:\fakepath\clutter.png] (/upfiles/14106927519492247.png) Can everyone help me to filter and smooth this image ? And finally there is only this ball on black background. This result is created after I choose the argument for Scalar is : lower(41,44,49) upper(91,255,255) ! Have a great day !!
