I can import cv2 from python in terminal which uses 2.7 by default, and cv2 version is 2.4.9.1. But when I open python3, I can only import opencv and that opencv has no attribute version.

ModuleNotFoundError: No module named 'cv2' What confuses me most is that it seems I've successfully installed OpenCV when I enter pkg-config opencv --cflags in terminal:

When I run Python interpreter and write import cv2 it does import it. When I run the code from command prompt it says ModuleNotFoundError: No module named 'cv2'.

But with the change in line cv2.waitKey(0). that means the program waits until a button is pressed. With this code I found the key value for the arrow buttons: arrow up (82), down (84), arrow left …

cv2.putText(image,"Hello World!!!", (x,y), cv2.CV_FONT_HERSHEY_SIMPLEX, 2, 255) It gives ERROR, saying 'module' object has no attribute 'CV_FONT_HERSHEY_SIMPLEX' Query …

I suggest you to work only with cv2 as long as it uses numpy arrays which are much more efficient in Python than cvMat and lplimage. Function GetSize doesn't work in cv2 because cv2 uses …

How can I crop images, like I've done before in PIL, using OpenCV. Working example on PIL

frame = streamer.grab_frame() if frame is not None: cv2.imshow("Context", frame) cv2.waitKey(1) Jittery, but real-time results . The streaming works. It maintains real-time. However, it is as if …

im = cv2.imread(path,-1) Setting the flag to 0, to load as grayscale, seems to default to 8 bit. Setting the flag to -1 loads the image as is.

I have installed OpenCV on the Occidentalis operating system (a variant of Raspbian) on a Raspberry Pi, using this script by jayrambhia. It installed version 2.4.5. When I try import cv2 in …