Coordinates in contour not Accurate/smooth

asked 2016-04-20 16:34:09 -0500

kartik gravatar image

updated 2016-04-20 16:39:04 -0500

I'm working on a people counter system and i'm getting the coordinate of each blob detected through the following code:

contours, hierarchy = cv2.findContours(thresh, cv2.RETR_TREE,cv2.CHAIN_APPROX_NONE)
    try: hierarchy = hierarchy[0]
    except: hierarchy = []
    for contour, hier in zip(contours, hierarchy):
      (x,y),radius = cv2.minEnclosingCircle(contour)
      center = (int(x),int(y))
      radius = int(radius)
      if radius>3:
        cv2.circle(frame,center,1,(0,255,0),-1)
        if x>400 and x<450:
            if (abs(prev_x-x))>25:
              cv2.circle(frame,center,1,(0,255,0),-1)
              j=j+1
              prev_x=x

Now the coordinates from the rectangle i'm getting isn't smooth. Moreover the centre of circle i'm getting is'nt stable. Can anyone please suggest a better solution at getting the coordinates of each blob/contour smmothly which is not prone to noise and is stable? Mine is moving too waywardly and the moving of centres arent linear. If there's a different algorithm available then please do suggest. Thanks.

edit retag flag offensive close merge delete

Comments

an image will be helpful to understand your question, see Image Moments

sturkmen gravatar imagesturkmen ( 2016-04-20 17:14:56 -0500 )edit