display image in opencv with python

Question

i am learning openCv with python.i want to display image but the code is not working.. it is not displaying anything rather than errors i searched but problem still same.. i followed solution mentioned here

OpenCV-Python not displaying image

  import cv2
img = cv2.imread("D:\\iki\\images.png", 0)
if img is None:
  print ("The file does not exist")
else:
  cv2.imshow("image", img)

but it didnt solve my problem..kindly point out where i am doing mistake would be grateful

error: Traceback (most recent call last): File "C:/Users/ATech/AppData/Local/Programs/Python/Python37-32/cc task/FYP_OpenCv/read_show_img.py", line 7, in <module> cv2.imshow("image", img) cv2.error: OpenCV(4.0.0) C:\projects\opencv-python\opencv\modules\highgui\src\window.cpp:625: error: (-2:Unspecified error) The function is not implemented. Rebuild the library with Windows, GTK+ 2.x or Cocoa support. If you are on Ubuntu or Debian, install libgtk2.0-dev and pkg-config, then re-run cmake or configure script in function 'cvShowImage'

Always check `if img is None`. Try to use the absolute path. — Berriel, Apr 14 '19 at 12:27
I wrote... `if img is None`. Also, I said: try to use the absolute path; did you try? — Berriel, Apr 14 '19 at 12:29
Try putting in the full path of the image. Go to the folder where your image is and then copy the path above(to the left of the search bar) — Dylan Riley, Apr 14 '19 at 12:31
Don't paste textual information (e.g. code, error message) as images -- such things can't be searched for, aren't accessible, and people generally aren't interested in retyping it. — Dan Mašek, Apr 14 '19 at 14:06
@sabeenkanwal You should copy the code and the error and **properly format them** when pasting in your question. — Berriel, Apr 14 '19 at 14:22

score 1 · Accepted Answer · answered Apr 14 '19 at 12:37

1

Just make sure your file does exist. Try this:

import cv2
img = cv2.imread("./Downloads/2nd-color.png", 0)
if img is None:
  print ("The file does not exist")
else:
  cv2.imshow("image", img)

Be aware of the second argument in imread. 0 is for grayscale. Have a look at: https://docs.opencv.org/3.0-beta/doc/py_tutorials/py_gui/py_image_display/py_image_display.html#read-an-image

Hope it helps

answered Apr 14 '19 at 12:37

wcosta

109
6

You are welcome. If it answers your question, please mark as answered. Otherwise, comment what is still wrong and we can try to figure that out :) – wcosta Apr 14 '19 at 22:59

display image in opencv with python

1 Answers1