How to import cv2 in python3?

Your screenshot shows you doing a pip install from the python terminal which is wrong. Do that outside the python terminal. Also the package I believe you want is: Since you’re running on Windows, I might look at the official install manual: https://breakthrough.github.io/Installing-OpenCV opencv2 is ONLY compatible with Python3 if you do so by compiling the source code. … Read more

How to solve munmap_chunk(): invalid pointer error in C++

This happens when the pointer passed to free() is not valid or has been modified somehow. I don’t really know the details here. The bottom line is that the pointer passed to free() must be the same as returned by malloc(), realloc() and their friends. It’s not always easy to spot what the problem is for a novice in their own code … Read more

How do I install Python OpenCV through Conda?

I’m trying to install OpenCV for Python through Anaconda, but I can’t seem to figure this out. I tried I also tried searching No cigar. I ran across this which lists opencv as an included package: http://docs.continuum.io/anaconda/pkgs.html After running conda info I noticed my version is 3.4.1, but I couldn’t seem to find any information about this version online. I’m … Read more

Permission denied error by installing matplotlib

It looks like your user does not have the permission to install packages in your system (for all users). Here’s how to fix this problem for Linux, macOS and Windows. Linux / macOS From your terminal, you can install the package for your user only, like this: OR You can use su or sudo from your terminal, to install the package … Read more

ImportError: numpy.core.multiarray failed to import

I’m trying to run this program But I’m having a problem with numpy, I’m using pyschopy along with opencv. The problem I keep getting is this error report: RuntimeError: module compiled against API version 7 but this version of numpy is 6 Traceback (most recent call last): File “C:\Users\John\Documents\EyeTracking\Programs\GetImage.py”, line 1, in ImportError: numpy.core.multiarray failed … Read more

Cannot find module cv2 when using OpenCV

I have installed OpenCV on the Occidentalis operating system (a variant of Raspbian) on a Raspberry Pi, using jayrambhia’s script found here. It installed version 2.4.5. When I try import cv2 in a Python program, I get the following message: The file cv2.so is stored in /usr/local/lib/python2.7/site-packages/… There are also folders in /usr/local/lib called python3.2 and python2.6, which could be a problem but I’m not … Read more