Below is my code and i am having this error :
File "imgTrack.py", line 37, in <module>
cv2.imshow('img2',img2)
cv2.error: /home/irum/OpenCv/modules/highgui/src/window.cpp:269: error: (-215) size.width>0 && size.height>0 in function imshow
Whats there that i am missing?
import numpy as np import cv2 from matplotlib import pyplot as plt cap = cv2.VideoCapture(0)
take first frame of the video
ret,frame = cap.read()
setup initial location of window
r,h,c,w = 250,90,400,125 # simply hardcoded the values track_window = (c,r,w,h)
set up the ROI for tracking
roi = frame[r:r+h, c:c+w] hsv_roi = cv2.cvtColor(frame, cv2.COLOR_BGR2HSV) mask = cv2.inRange(hsv_roi, np.array((0., 60.,32.)), np.array((180.,255.,255.))) roi_hist = cv2.calcHist([hsv_roi],[0],mask,[180],[0,180]) cv2.normalize(roi_hist,roi_hist,0,255,cv2.NORM_MINMAX)
Setup the termination criteria, either 10 iteration or move by atleast 1 pt
term_crit = ( cv2.TERM_CRITERIA_EPS | cv2.TERM_CRITERIA_COUNT, 10, 1 )
while(1): ret ,frame = cap.read()
if ret == True:
hsv = cv2.cvtColor(frame, cv2.COLOR_BGR2HSV)
dst = cv2.calcBackProject([hsv],[0],roi_hist,[0,180],1)
# apply meanshift to get the new location
ret, track_window = cv2.CamShift(dst, track_window, term_crit)
# Draw it on image
pts = cv2.cv.BoxPoints(ret)
pts = np.int0(pts)
img2 = cv2.polylines(frame,[pts],True, 255,2)
cv2.imshow('img2',img2)
k = cv2.waitKey(60) & 0xff
if k == 27:
break
else:
cv2.imwrite(chr(k)+".jpg",img2)
else:
break
cv2.destroyAllWindows() cap.release()
