error: (-215:Assertion failed) !_src.empty() in function 'cv::cvtColor'
This error happened because the image didn't load properly.
So you have problem with the previous line cv2.imread my suggestion is :
check if the images exist in the path you give
check the count variable if he have valid numbercv2.error: OpenCV(4.5.3) C:\Users\runneradmin\AppData\Local\Temp\pip-req-build-q3d_8t8e\opencv\modules\imgproc\src\color.cpp:182: error: (-215:Assertion failed) !_src.empty() in function 'cv::cvtColor'
Try Giving Full Path.
This seems to be the path issue in windows.
I changed it to a full path like this and it worked.
filename = "D:\Sandbox\Github\opencv-project\Resources\Photos\cats.jpg"cv2.error: OpenCV(4.5.2) .error: (-215:Assertion failed) !_src.empty() in function 'cv::cvtColor' in command line
cv2.line(img, (int(corners_int[0, 0]), int(corners_int[0, 1])), (int(corners_int[3, 0]), int(corners_int[3, 1])), (255, 255, 0), 2)Copyright © 2021 Codeinu
Forgot your account's password or having trouble logging into your Account? Don't worry, we'll help you to get back your account. Enter your email address and we'll send you a recovery link to reset your password. If you are experiencing problems resetting your password contact us
