logo
down
shadow

CV2: Import Error in Python OpenCV


CV2: Import Error in Python OpenCV

By : cormierronald
Date : January 12 2021, 08:33 AM
around this issue I have Anaconda installed in my system and I recently installed OpenCV 3.0.0 using the instructions given on this page. But when I open python and type import cv2, it throws me the following error: , sudo apt-get install libgcc
This dependency caused the error.
code :


Share : facebook icon twitter icon
Python Import error Opencv NameError: name highgui is not defined

Python Import error Opencv NameError: name highgui is not defined


By : Nik P
Date : March 29 2020, 07:55 AM
will help you there is no highgui module in opencv's python api. (full-stop)
actually , all your import statements look dorky.
code :
import cv2
cv2.imshow() 
cv2.waitKey()   
Python OpenCV import error with python 3.5

Python OpenCV import error with python 3.5


By : Tianjie Zhong
Date : March 29 2020, 07:55 AM
To fix this issue Found an answer - follow the instructions on this website BUT you have to change to the version of python you are using.
Also, I didn't bother with the virtual environments.
cv2.error: C:\projects\opencv-python\opencv\modules\highgui\src\window.cpp:325: error: (-215) size.width>0 &&

cv2.error: C:\projects\opencv-python\opencv\modules\highgui\src\window.cpp:325: error: (-215) size.width>0 &&


By : Анкестор Мартанкус
Date : March 29 2020, 07:55 AM
hope this fix your issue This error comes up when no image (the array containing the image information) reaches the imshow() function. This is caused because your imread() function is not returning the desired output. Common mistakes include the following:
Incorrect Image Name: Check the name of the image right down to the format. Even jpg and jpeg are different. Incorrect Path: In the case that your image is not in the same directory, put the full path to the image. Since you're using Windows, don't forget to change the backslash to forward. Those using Ubuntu should ensure that they put a '\' before home eg '\home\username\Desktop' Access Issues: This is more prevalent for linux users but sometime you might not have read access to the image. Try using chmod 777 and run your code again. Please note that it is advised to change the access back to something more restrictive.
Python-opencv Error import cv2 ImportError: dlopen after update of OS X El Capitan

Python-opencv Error import cv2 ImportError: dlopen after update of OS X El Capitan


By : Susheel Sriram
Date : March 29 2020, 07:55 AM
wish helps you This is because of SIP (System Integrity Protection) introduced in El Capitan link.
I too faced the same issue and came across this SO link. Basically, the relative path dependencies listed in the shared libs need to be changed to absolute paths. There are huge number of these to be corrected in opencv libraries. You can optionally disable SIP. I preferred to change the links instead and wrote the following python snippet.
Getting an error OpenCV(3.4.1) C:\projects\opencv-python\opencv\modules\imgproc\src\thresh.cpp:1406: error: (-215)

Getting an error OpenCV(3.4.1) C:\projects\opencv-python\opencv\modules\imgproc\src\thresh.cpp:1406: error: (-215)


By : RaviKrishna Rayudu
Date : March 29 2020, 07:55 AM
Hope this helps You will be able to resolve your error with following way.
First check whether your input image has only single channel. You can check it by running print img.shape. If the result is like (height, width, 3), then the image is not single channel. You can convert the image into a single channel one by:
code :
img = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
img = img.astype('uint8')
 ret3,th3 = cv2.threshold(blur,0,255,cv2.THRESH_BINARY | cv2.THRESH_OTSU)
img = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
img = img.astype('uint8')
blur = cv2.GaussianBlur(img,(5,5),0)
ret3,th3 = cv2.threshold(blur,0,255,cv2.THRESH_BINARY | cv2.THRESH_OTSU)
image = numpy.invert(th3)
cv2.show('image_out', image)
cv2.waitKey(0)
cv2.destroyAllWindows() 
Related Posts Related Posts :
  • How to calculate each single element of a numpy array based on conditions
  • How do I change the width of Jupyter notebook's cell's left part?
  • Measure distance between lat/lon coordinates and utm coordinates
  • Installing megam for NLTK on Windows
  • filter dataframe on each value of a samn column have a specific value of another column in Panda\Python
  • Threading with pubsub throwing AssertionError: 'callableObj is not callable' in wxPython
  • Get grouped data from 2 dataframes with condition
  • How can I import all of sklearns regressors
  • How to take all elements except the first k
  • Whats wrong with my iteration list of lists from csv
  • Tensorflow Estimator API save image summary in eval mode
  • How to Pack with PyQt - how to make QFrame/Layout adapt to content
  • How do I get certain Time Range in Python
  • python doubly linked list - insertAfter node
  • Open .h5 file in Python
  • Joining a directory name with a binary file name
  • python, sort list with two arguments in compare function
  • Is it possible to print from Python using non-ANSI colors?
  • Pandas concat historical data using date minus some number of days
  • shadow
    Privacy Policy - Terms - Contact Us © voile276.org