Import cv2 in python windows.

Import cv2 in python windows 使用OpenCV读取和显示图像只需要几行代码： import cv2 import matplotlib. 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. 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. Jun 15, 2023 · Hi, I installed opencv-contrib-python 4. Aug 12, 2024 · #import cv2, numpy and matplotlib libraries import cv2 import numpy as np import matplotlib. imread and display it with the function cv. Installed Media feature pack on windows 10 from Optional features settings. COLOR_BGR2RGB) #Displaying image using plt. Download latest OpenCV release from GitHub or SourceForge site and double-click to extract it. Aug 7, 2024 · OpenCV-Python is a library of Python bindings designed to solve computer vision problems. After installation, open Python IDLE. It takes 2 parameters that are windows name and the title that needs to be given. Using pre-built binaries is the quickest way to get a Python OpenCV environment up and running on Windows. 5 and open WinPyhton Command prompt and type "pip install opencv-python". 7 is the ONLY supported python version for cv 2. 0 and 4. py. Dec 3, 2015 · This problem occurs when i am trying to import cv2. org/project/opencv-python Three workarounds. 5 with Cuda and GStreamer. 7系を利用。 OpenCV3. 3. 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. __version__ (garis bawah merupakan underscore 2 kali) Demikianlah step by step proses instalasi OpenCV di Windows 10 yang terintegrasi dengan Python 3. 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. Python 2. 5 on Windows and installed numpy, matplotlib and OpenCV from that repository. __version__) If no errors appear and the version number is printed OpenCV is successfully installed. 5 DLL load failed. 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. __version__) print(cv2. py", line 2, in import cv2 List item File “C:\Users\MikailAkdeniz\AppData\Local\Programs\Python\Python312\Lib\site-packages\cv2_init. __version__) 易 基础使用方法 读取和显示图像. First, install the necessary dependencies. I tried pip install cv2 and pip install open_cv and got the same problem - a warning message from dist. Our goal is to copy and paste the cv2. cp38-win32. 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. Also, import the sys module for additional packages. Then set the cv2. Then ran pip install opencv-python again. 6. It's worth noting that you can build OpenCV from the source code yourself if you need a specific version on your machine. Jan 15, 2025 · Open a Python shell and type the following: print(cv2. I reinstalled and followed Linda's tips, which didn't work. 10 cv2 file of OpenCV (as there is no 3. 2, python 2. png' # Reading an image in default mode image = cv2. Jan 9, 2012 · It looks like you have three different distributions of Open CV installed. 7\bin') # Import OpenCV import cv2 print(cv2. Both the parameters are expected to be of string type. $ pip install opencv-contrib-python. 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. Apr 2, 2017 · The Anaconda Site-packages directory (e. Open Python in your terminal and try importing cv2: import cv2. imread('path to your image') # show the image, provide window name first cv2. Installing OpenCV from prebuilt binaries. Quick way to check whether OpenCV for Python is installed correctly or not is to import cv2 in python interpreter. 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. imshow (window_name, image Mar 25, 2024 · import cv2 print (cv2. 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() method plt. If no errors occur, OpenCV is ready to be used. I successfully compiled opencv 4. Below steps are tested in a Windows 7-64 bit machine with Visual Studio 2010 and Visual Studio 2012. When I try import cv2 in a Python Feb 16, 2014 · I'm using opencv 2. Jan 4, 2023 · OpenCV in Python provides a method cv2. pyd file that should be in the cv2 folder. Step 9: Testing Python code Step 9. May 7, 2015 · I got message like “ImportError: Module use of python27. 72 using pip for python 3. I tried with pip install, but it doesn't seem to work. dll file in python 3. imread() function and deliver the image path/image name as a first parameter. Type at the prompt: import cv2. pyplot as plt img = cv2. pip isn't specific to windows. getBuildInformation()) Jun 24, 2024 · strong text> Traceback (most recent call last): \Masaüstü\heatmap\heatmapp. Finally, I noticed that my Anaconda environment didn't have cv2 installed, even with all I did. Create a variable as img that holds our image. Mar 17, 2023 · Windows 11 laptop Python 3. cvtColor (img, cv2. ” when trying “import cv2”, as your directions. 7 folder. 6. This post is for those readers who want to install OpenCV on Windows for writing Python code only. __version__ # Should print 3. This package has only support to Windows operating system. Windows10（64bit） WinPython ※Pythonは2. cvtColor() method is used to convert an image from one color space to another. imshow() method # importing cv2 import cv2 # path path = r 'C:\Users\Rajnish\Desktop\geeksforgeeks. 7. print(cv2. setWindowTitle( winname, title ) Parameters: winname: windows nametitle Jan 8, 2013 · We will learn to setup OpenCV-Python in your Windows system. 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. It seems they are quite common. Reading an image; The following code reads an image from a file: ```python import cv2; image = cv2. 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. add_dll_directory(r'C:\Program Files\NVIDIA\CUDNN\v8. 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. 0; 環境構築 WinPython. To check the version of OpenCV, type the command print(cv2. waitKey(0) # and finally destroy/close all open windows cv2. May 16, 2024 · pip install opencv-python Step 4: Import OpenCV in your Notebook. 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. I installed opencv using pip install opencv-contrib-python, where it installed successfully. 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. Install Opencv for Python on Windows. 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". destroyAllWindows() Feb 8, 2021 · Hence, we have come up with a solution for Windows users – OpenCV Windows installers. 7 and regular pip, so you can use cv2. 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. 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. For example: For advanced users, installing OpenCV from source allows customization. imshow() method # Displaying the image cv2. imshow in a window called window . Aug 29, 2023 · I have installed python 3. 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. Oct 4, 2020 · I deleted cv2 and openCV folder from the Python\Python38\Lib\site-packages\ folder in my system. 1. Now, when I type import cv2 in my . window waits until user presses a key cv2. Â Syntax: cv2. I also tried pyopenvc and pip install opencv-python. We will also cover some common issues that users may encounter during the installation process. This method is more complex but offers greater control over the build process. These installers will only work for installing OpenCV for C++. Conclusion. Improve this answer. Installing `cv2` correctly is the first step towards harnessing its capabilities. Open command prompt in Windows, run python command. imread ('path_to_image. cv2. 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. Note that although OpenCV 3 is the latest release, by convention, the module is still named cv2. png") # Converting BGR color to RGB color format RGB_img = cv2. C:\Users\Johnny\Anaconda\Lib\site-packages in my case) contains the Python packages that you may import. waitforbuttonpress plt Feb 3, 2023 · Python OpenCV setWindowTitle() method used for giving the title of the windows. Currently, only the Python 2 version of the cv2 module is built and included in the latest Windows release. jpg') # 将BGR图像 Sep 19, 2015 · Use the prebuilt windows packages distributed by Gohlke. Usage Methods Importing cv2. 2: Install cv2 from source code so it autodetects your system and from source does the right thing. 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. getWindowProperty() to detect whether a window is closed or open. Goto opencv/build/python/2. May 26, 2017 · After running the application you will see two image windows, one with red eyes and another with black eyes. imread(), which loads the image into memory. Step 4: Check Your Python Environment Aug 15, 2018 · I need to install cv2 for a script that has been written for me. 5. org 2 days ago · Python will be installed to C:/Python27/ in case of Python 2. __version__) If there are no import errors and it prints the version of OpenCV, the installation was successful. 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. The imshow() function is then called with two arguments: the name of the window (‘Image Window’) and the image itself. I saw topics about that kind of errors. 10. That will work on Linux and Mac as well. ). IMREAD_ANYCOLOR is the next parameter to read every color of the image. First we import the OpenCV library cv2 and give it the shortcut cv. Reading an image; The following code Oct 14, 2021 · Out-of-the-box opencv installation for python on windows. pyd file Nov 7, 2024 · OpenCV-Python is a library of Python bindings designed to solve computer vision problems. 0. 0-rc1 or newer. pip3 install opencv-python. 6) it shows directly: "ImportError: DLL load failed: The specified module could not be found" Then I install python 3. Syntax: cv2. g. 5 site-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. opencv is referred to as cv2 in python. x series. __version__) And that’s it. 9. BUT, when i try to import cv2, for sure, i get an issue : DLL is missing or things like that. 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. Cannot import cv2 in python in OSX. 1: Jul 26, 2024 · # Python program to explain cv2. 1: Just use python2. 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. It provides a vast array of functions for image and video processing, such as image filtering, object detection, and video analysis. 8 on Windows 10 and Pycharm (or VS Code as well), I have this same issue. 11. import cv2. It installed version 2. 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. dll conflicts with this version of Python. Jan 23, 2016 · import cv2 # read image image = cv2. Thanks. 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. lib to the end if the version of opencv is 4. imshow() method is used to display an image in a window. Then we read an image file using cv2. 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. Here are some things that can Mar 26, 2019 · In my case, using Python 3. If no errors occur, it means that OpenCV is correctly installed on your Windows system. imshow (RGB_img) # hold the window plt. Follow Can't import cv2 on Python 3. imshow('image window', image) # add wait key. I have just done a clean install of Python 3. __version__) and press enter. __version__) If OpenCV is installed correctly, this will print the version number. Then I actived python2. 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. Apr 7, 2024 · Hi all, I recently downloaded anaconda python in order to work on an opencv personal project. If you want to install OpenCV for Python, you’ll find the information later in the blog. py and complains about zlib being not found. The screenshots shows VS2012. Finally I noticed that the Antivirus (Nod32) deletes the cv2. Commented Aug 26, 2022 at 16:08. Once installed, you can import cv2 in your Python script as follows: import cv2 Basic Image Reading and Display. imread (path) # Window name in which image is displayed window_name = 'image' # Using cv2. If you need any more information please tell me. pyd file to this directory (so that we can use the import cv2 in our Python codes. import cv2 as cv Then we load an image from the current folder with the function cv. To install the opencv-python module 3 days ago · We will learn to setup OpenCV-Python in your Windows system. 1. I have installed OpenCV on the Occidentalis operating system (a variant of Raspbian) on a Raspberry Pi, using this script by jayrambhia. There are more than 150 color-space conversion methods available in OpenCV. Below Python packages are to be downloaded and installed to their default locations. Installing OpenCV from prebuilt binaries . However, many readers have faced problems while installing OpenCV 3 on Windows from source. Mar 18, 2025 · Once installed, you can import cv2 in your Python script as follows: import cv2 Basic Image Reading and Display. __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. Cek apakah OpenCV sudah terinstall dan terintegrasi dengan Python dengan mengikuti perintah berikut: python. 3 - 32bit, on Windows 7 - 64bit) Share. If you want to install OpenCV 4 on Windows from source, then check out this blog post. Copy cv2. Mar 17, 2022 · I wanted to install cv2 for python. Call the cv2. 2. See full list on pypi. 7 in Anaconda and try again, but it said “ImportError: No module named cv2”. My laptop is 64bit and installed 64bit python, i also put the cv2. 10 depending on your version) pip3 install opencv-python. 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. No cv2 installed. imread ("geeks. 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. Oct 18, 2015 · (Running Python 3. 4. Rebooted my system and import cv2 worked like a charm. 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. pyplot as plt # 读取图像 img = cv2. 1 : Quick check. 2 Visual studio 2022. Python If you see the version information of OpenCV appear, then Anaconda has installed the library correctly. 11 python file) and opencv_world480. Read the section: "Supported Python versions: here: pypi. pyd to C:/Python27/lib/site-packages. To do this, copy the cv2. Semoga bermanfaat 🙂. imread('path_to_your_image. May 10, 2017 · Because when I "import cv2" installed (python 3. The window automatically fits the image size. getWindowProperty() returns -1 if all windows are closed. So, I went to the opencv site and downloaded the relevant exe. It can build console executable and windows (GUI) executable. – labyrinth. Can anyone help me? The version of python I use is 3. This blog post will guide you through the installation . Enter import numpy and make sure Numpy is working fine. Mar 18, 2025 · Then, try importing cv2: python import cv2 print(cv2. This is probably what's causing the conflict here. bpq kyjx tfl kewf jfvhw uzpkqx cfruudhe ilgp gcff eceokh utrz qzyp wgqs iulz qef