Import cv2 in python windows 0-rc1 or newer. ” when trying “import cv2”, as your directions. Installing OpenCV from prebuilt binaries. This blog post will guide you through the installation . Currently, only the Python 2 version of the cv2 module is built and included in the latest Windows release. Reading an image; The following code Oct 14, 2021 · Out-of-the-box opencv installation for python on windows. Also, import the sys module for additional packages. There is a post on pyimagesearch - pip install opencv which outlines the differences between the different pip packages you can install for Open CV. cv2 ImportError: DLL We already have a post for installing OpenCV 3 on Windows which covers how to install OpenCV3 from source for working with both C++ and Python codes. 10. pyplot as plt # 读取图像 img = cv2. imread('path to your image') # show the image, provide window name first cv2. See full list on pypi. May 22, 2024 · Py2exe is a Python package that allows the building of standalone Windows executable programs that can be 32-bit or 64-bit from Python scripts. Installed Media feature pack on windows 10 from Optional features settings. Then set the cv2. May 7, 2015 · I got message like “ImportError: Module use of python27. imread ("geeks. These installers will only work for installing OpenCV for C++. Windows10（64bit） WinPython ※Pythonは2. If you need any more information please tell me. pip isn't specific to windows. Jun 30, 2023 · However, you may encounter installation issues on Windows due to incorrect installation directory, mismatched versions of OpenCV, Python, and pip, or conflicts due to naming their own Python file or program as cv2. WinPythonを使うとWindows上でPython環境をまるっと一式構築できます。 Mar 11, 2025 · In this code, we first import the OpenCV library using import cv2. Installing OpenCV from prebuilt binaries . 7\bin') # Import OpenCV import cv2 print(cv2. – labyrinth. import cv2. 7 in Anaconda and try again, but it said “ImportError: No module named cv2”. Python If you see the version information of OpenCV appear, then Anaconda has installed the library correctly. Reading an image; The following code reads an image from a file: ```python import cv2; image = cv2. Finally I noticed that the Antivirus (Nod32) deletes the cv2. Aug 12, 2024 · #import cv2, numpy and matplotlib libraries import cv2 import numpy as np import matplotlib. 2: Install cv2 from source code so it autodetects your system and from source does the right thing. 5. Then ran pip install opencv-python again. jpg') # 将BGR图像 Sep 19, 2015 · Use the prebuilt windows packages distributed by Gohlke. 6. imread('C:/Python27/ Jan 26, 2025 · `cv2`, also known as OpenCV (Open Source Computer Vision Library) in Python, is a powerful library for computer vision tasks. If you want to install OpenCV 4 on Windows from source, then check out this blog post. Follow Can't import cv2 on Python 3. Create a variable as img that holds our image. py", line 2, in import cv2 List item File “C:\Users\MikailAkdeniz\AppData\Local\Programs\Python\Python312\Lib\site-packages\cv2_init. Â Syntax: cv2. pyd file that should be in the cv2 folder. Mar 18, 2025 · Then, try importing cv2: python import cv2 print(cv2. 0. Operating System: Linux macOS Windows Building From Source: Yes No Language: Python C++ Java Android iOS JavaScript Run this Command: Default Result: pip3 install opencv-python Verification To ensure that OpenCV is installed correctly, we can run the following example to show how to read and display […] Apr 22, 2025 · After installation verify that if OpenCV is working. Installing `cv2` correctly is the first step towards harnessing its capabilities. This package has only support to Windows operating system. 5 on my windows machine and I have downloaded opencv using the command: pip3 install opencv-python I have followed this tutorial to copy the python 3. 7 The following simple code created a window of the correct name, but its content is just blank and doesn't show the image: import cv2 img=cv2. To check the version of OpenCV, type the command print(cv2. Rebooted my system and import cv2 worked like a charm. Quick way to check whether OpenCV for Python is installed correctly or not is to import cv2 in python interpreter. __version__) And that’s it. First we import the OpenCV library cv2 and give it the shortcut cv. For example: For advanced users, installing OpenCV from source allows customization. I installed opencv using pip install opencv-contrib-python, where it installed successfully. The window automatically fits the image size. 72 using pip for python 3. 7系を利用。 OpenCV3. imread(), which loads the image into memory. imshow() method is used to display an image in a window. First, install the necessary dependencies. BUT, when i try to import cv2, for sure, i get an issue : DLL is missing or things like that. dll file in python 3. Step 4: Check Your Python Environment Aug 15, 2018 · I need to install cv2 for a script that has been written for me. Mar 17, 2023 · Windows 11 laptop Python 3. 10 cv2 file of OpenCV (as there is no 3. ). 6) it shows directly: "ImportError: DLL load failed: The specified module could not be found" Then I install python 3. 使用OpenCV读取和显示图像只需要几行代码： import cv2 import matplotlib. 1 : Quick check. 1: Jul 26, 2024 · # Python program to explain cv2. opencv-python and opencv-python-headless are similar, but opencv-python is used for a system with a GUI, and headless for Jan 10, 2016 · マシンスペック上の都合と環境に慣れているという理由でWindows環境を使います。 環境・ソフトウェアなど. png' # Reading an image in default mode image = cv2. imshow (RGB_img) # hold the window plt. add_dll_directory(r'C:\Program Files\NVIDIA\CUDNN\v8. 3 - 32bit, on Windows 7 - 64bit) Share. I tried pip install cv2 and pip install open_cv and got the same problem - a warning message from dist. waitKey(0) # and finally destroy/close all open windows cv2. getWindowProperty() returns -1 if all windows are closed. Finally, I noticed that my Anaconda environment didn't have cv2 installed, even with all I did. This is probably what's causing the conflict here. Step 9: Testing Python code Step 9. __version__ (garis bawah merupakan underscore 2 kali) Demikianlah step by step proses instalasi OpenCV di Windows 10 yang terintegrasi dengan Python 3. __version__) If OpenCV is installed correctly, this will print the version number. We will also cover some common issues that users may encounter during the installation process. 5 DLL load failed. Jan 23, 2016 · import cv2 # read image image = cv2. 11. Dec 3, 2015 · This problem occurs when i am trying to import cv2. 11 python file) and opencv_world480. lib to the end if the version of opencv is 4. However, many readers have faced problems while installing OpenCV 3 on Windows from source. The imshow() function is then called with two arguments: the name of the window (‘Image Window’) and the image itself. Aug 7, 2024 · OpenCV-Python is a library of Python bindings designed to solve computer vision problems. Jan 9, 2012 · It looks like you have three different distributions of Open CV installed. After installation, open Python IDLE. This post is for those readers who want to install OpenCV on Windows for writing Python code only. Once OpenCV is installed, you can check if it is installed correctly or not by importing the module into your code and checking for its version that is installed. 2 Visual studio 2022. Oct 4, 2020 · I deleted cv2 and openCV folder from the Python\Python38\Lib\site-packages\ folder in my system. Below Python packages are to be downloaded and installed to their default locations. Note that although OpenCV 3 is the latest release, by convention, the module is still named cv2. To do this, copy the cv2. __version__) If no errors appear and the version number is printed OpenCV is successfully installed. If no errors occur, OpenCV is ready to be used. Commented Aug 26, 2022 at 16:08. It can build console executable and windows (GUI) executable. It provides a vast array of functions for image and video processing, such as image filtering, object detection, and video analysis. Install Opencv for Python on Windows. May 26, 2017 · After running the application you will see two image windows, one with red eyes and another with black eyes. 3. That will work on Linux and Mac as well. __version__) and press enter. getBuildInformation()) Jun 24, 2024 · strong text> Traceback (most recent call last): \Masaüstü\heatmap\heatmapp. __version__) 易 基础使用方法 读取和显示图像. 1. pip3 install opencv-python. imread (path) # Window name in which image is displayed window_name = 'image' # Using cv2. 7 is the ONLY supported python version for cv 2. Using pre-built binaries is the quickest way to get a Python OpenCV environment up and running on Windows. getWindowProperty() to detect whether a window is closed or open. destroyAllWindows() Feb 8, 2021 · Hence, we have come up with a solution for Windows users – OpenCV Windows installers. Mar 24, 2023 · In this blog post, we will provide a step-by-step guide on installing OpenCV-Python in various operating systems, including Windows, macOS, and Linux. So, in this article, we will be ins Mar 15, 2024 · If you’re working with computer vision and image processing in Python, OpenCV is an essential library to have in your toolkit. window waits until user presses a key cv2. Aug 29, 2023 · I have installed python 3. imread ('path_to_image. The screenshots shows VS2012. These issues can be resolved by checking the Python and pip versions, upgrading pip if necessary, uninstalling any pre-existing Apr 8, 2024 · Install opencv-python (cv2) on Windows; Install opencv-python (cv2) on macOS or Linux; Install opencv-python (cv2) in Visual Studio Code; Install opencv-python (cv2) in PyCharm; Install opencv-python (cv2) in Anaconda; Install opencv-python (cv2) in Jupyter Notebook # Install opencv-python (cv2) on Windows. 0 and 4. pyd to C:/Python27/lib/site-packages. opencv is referred to as cv2 in python. org 2 days ago · Python will be installed to C:/Python27/ in case of Python 2. Python 2. __version__ # Should print 3. Goto opencv/build/python/2. This is one of the main problems we face while using the OpenCV package, sometimes it's hard to detect whether the window is open or clos Feb 27, 2022 · Import the OpenCV package to access the functions. I successfully compiled opencv 4. imread and display it with the function cv. Conclusion. Then we read an image file using cv2. jpg') if image is not None: print('Image read successfully') else: print('Error reading image') 2 Installation Select your preferences and run the install command. imshow (window_name, image Mar 25, 2024 · import cv2 print (cv2. To install the opencv-python module 3 days ago · We will learn to setup OpenCV-Python in your Windows system. __version__) print(cv2. Now, when I type import cv2 in my . There are more than 150 color-space conversion methods available in OpenCV. 5 and open WinPyhton Command prompt and type "pip install opencv-python". Improve this answer. It seems they are quite common. Below steps are tested in a Windows 7-64 bit machine with Visual Studio 2010 and Visual Studio 2012. I tried with pip install, but it doesn't seem to work. 1: Just use python2. png") # Converting BGR color to RGB color format RGB_img = cv2. Jun 15, 2023 · Hi, I installed opencv-contrib-python 4. Semoga bermanfaat 🙂. Jan 4, 2023 · OpenCV in Python provides a method cv2. py and complains about zlib being not found. If no errors occur, it means that OpenCV is correctly installed on your Windows system. Thanks. $ pip install opencv-contrib-python. 4 on Windows 10 x86-64 But when I run I get this exceptiom DLL load failed while importing cv2: The specified module could not be found. x series. imread() function and deliver the image path/image name as a first parameter. In this post, we’ll walk through the steps to install OpenCV in an Anaconda environment, making it easy to manage your packages and dependencies. py", lin… Oct 11, 2016 · I had created my Anaconda environment and installed everything I needed, but when trying to import cv2, I always got the message "no module named cv2". imshow() method plt. Call the cv2. 5 site-packages. Syntax: cv2. If you want to install OpenCV for Python, you’ll find the information later in the blog. pyd file in the site-packages folder of Python Apr 25, 2022 · Step 3: With everything taken care of, we finally start installing OpenCV on your Windows system. Apr 7, 2024 · Hi all, I recently downloaded anaconda python in order to work on an opencv personal project. I saw topics about that kind of errors. No cv2 installed. openCV for python on Windows using May 26, 2023 · Finally, the IDE from where you run your Python code may use a different Python version when you have multiple versions installed. Mar 18, 2025 · Once installed, you can import cv2 in your Python script as follows: import cv2 Basic Image Reading and Display. Also, you can use apt in Ubuntu: Now you can import cv2 and print its version: [ ] spark Gemini [ ] Run cell (Ctrl+Enter) Import the OpenCV package by typing the command import cv2. cv2. 2, python 2. I have just done a clean install of Python 3. Open Python in your terminal and try importing cv2: import cv2. org/project/opencv-python Three workarounds. 2. import cv2 as cv Then we load an image from the current folder with the function cv. cp38-win32. 7 folder. __version__) このコードを実行すると、現在インストールされているOpenCVのバージョンが表示されます。 表示されたらインストールは正しく行われています。 Apr 30, 2024 · 安装完成后，可以通过以下Python代码来验证cv2模块是否正确安装： import cv2 print (cv2. Then I actived python2. 0; 環境構築 WinPython. setWindowTitle( winname, title ) Parameters: winname: windows nametitle Jan 8, 2013 · We will learn to setup OpenCV-Python in your Windows system. May 16, 2024 · pip install opencv-python Step 4: Import OpenCV in your Notebook. Cannot import cv2 in python in OSX. 7. cvtColor (img, cv2. Download latest OpenCV release from GitHub or SourceForge site and double-click to extract it. Copy cv2. 4. For example, you can check the Python interpreter used in VSCode by opening the command palette (CTRL + Shift + P for Windows and ⌘ + Shift + P for Mac) then run the Python: Select Interpreter command. py. Oct 18, 2015 · (Running Python 3. Open command prompt in Windows, run python command. Apr 15, 2025 · OpenCVは、コンピュータビジョンや画像処理のための強力なライブラリで、Pythonで使用する際にはcv2モジュールとして利用されます。 PythonでOpenCVをインストールするには、一般的にpipを使用します。 コマンドラインでpip install opencv-pythonと入力すること 3 days ago · We will learn to setup OpenCV-Python in your Windows system. Jan 15, 2025 · Open a Python shell and type the following: print(cv2. COLOR_BGR2RGB) #Displaying image using plt. Can anyone help me? The version of python I use is 3. pyd file to this directory (so that we can use the import cv2 in our Python codes. Both the parameters are expected to be of string type. IMREAD_ANYCOLOR is the next parameter to read every color of the image. I also tried pyopenvc and pip install opencv-python. Read the section: "Supported Python versions: here: pypi. imshow() method # importing cv2 import cv2 # path path = r 'C:\Users\Rajnish\Desktop\geeksforgeeks. But when I try to import cv2 in python idle, it appears the following error: Traceback (most recent Apr 3, 2024 · # using Python 2 pip install opencv-python # (could also be pip3. 7 and regular pip, so you can use cv2. imshow in a window called window . Bobsis – 2020 Jul 8, 2018 · To install OpenCV, open a terminal window (aka a command prompt window for Windows users) and use conda to install the latest version (v3) using the following command: > python > import cv2 Dec 25, 2024 · To resolve the issue, add the cuDNN binary directory to Python’s DLL search paths before importing OpenCV: import os # Add cuDNN DLL directory os. 8 on Windows 10 and Pycharm (or VS Code as well), I have this same issue. May 10, 2017 · Because when I "import cv2" installed (python 3. print(cv2. 5 with Cuda and GStreamer. imshow() method # Displaying the image cv2. Enter import numpy and make sure Numpy is working fine. Our goal is to copy and paste the cv2. py file, I get the following error: ModuleNotFoundError: No module named 'cv2' I’m a beginner, so I really don’t know what is happening. dll conflicts with this version of Python. waitforbuttonpress plt Feb 3, 2023 · Python OpenCV setWindowTitle() method used for giving the title of the windows. 1. Mar 25, 2025 · To name the few more available libraries that can be included with the following linker flags (for Windows remove -l and add 451d. I have installed OpenCV on the Occidentalis operating system (a variant of Raspbian) on a Raspberry Pi, using this script by jayrambhia. Once installed, you can import cv2 in your Python script as follows: import cv2 Basic Image Reading and Display. Here are some things that can Mar 26, 2019 · In my case, using Python 3. It takes 2 parameters that are windows name and the title that needs to be given. 9. imread('path_to_your_image. Type at the prompt: import cv2. To check if OpenCV is installed properly, open a new command prompt and enter a Python shell using the following command: $ python >> import cv2 >> print(cv2. cvtColor() method is used to convert an image from one color space to another. This method is more complex but offers greater control over the build process. C:\Users\Johnny\Anaconda\Lib\site-packages in my case) contains the Python packages that you may import. imshow('image window', image) # add wait key. pyplot as plt img = cv2. It's worth noting that you can build OpenCV from the source code yourself if you need a specific version on your machine. Apr 2, 2017 · The Anaconda Site-packages directory (e. Usage Methods Importing cv2. 10 depending on your version) pip3 install opencv-python. When I try import cv2 in a Python Feb 16, 2014 · I'm using opencv 2. I reinstalled and followed Linda's tips, which didn't work. If you get a permission error, then you can use the following commands: # on linux operating system sudo pip3 install opencv-python # on windows pip install opencv-python --user After installation, it is recommended that you can check the version of OpenCV that Python is using: import cv2 print cv2. imshow(window_name, image)Parameters:Â window_name: A string representing the name of the w Mar 10, 2019 · We can verify if the installation was successful by launching the python interpreter. g. __version__) If there are no import errors and it prints the version of OpenCV, the installation was successful. So, I went to the opencv site and downloaded the relevant exe. Mar 17, 2022 · I wanted to install cv2 for python. It installed version 2. Cek apakah OpenCV sudah terinstall dan terintegrasi dengan Python dengan mengikuti perintah berikut: python. 6. pyd file Nov 7, 2024 · OpenCV-Python is a library of Python bindings designed to solve computer vision problems. 5 on Windows and installed numpy, matplotlib and OpenCV from that repository. My laptop is 64bit and installed 64bit python, i also put the cv2. anwwtm ksnx cmf bwve fejh kobw wkic ujpzjwba ssxtqvo tlwxiyfsk mvsfxt cbt xccf dvsps zsugq