Import cv2 install cv2)? A: It's easier for users to understand opencv-python than cv2 and it makes it easier to find the package with search engines. __version__) 来查看安装的版本号，以确认你安装的是最新版本。 Apr 2, 2017 · and then validate you install in Python script: import cv2 print(cv2. Maybe now I realise the point of virtualenvs May 22, 2024 · If it is not then you can refer to Install VS Code in Windows for further information regarding the installation of VS Code. __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。 Dec 31, 2024 · 在激活的虚拟环境中安装cv2库： pip install opencv-python. Follow Mar 25, 2024 · import cv2 print (cv2. 0 Share. First, install the necessary dependencies. 5 Installing OpenCV from Source. I can import cv2 from python in terminal which uses 2. For example: 4. Run the following command: pip install opencv - python This will install the latest version of the official OpenCV Python bindings. This method is more complex but offers greater control over the build process. Usage Methods Importing cv2. cv2를 import 하겠다는 것이죠. Finally, verify the installation by importing “cv2” into the current Python code and running “print(cv2. After installing, install OpenCV from PyPi using the “pip” command. print(cv2. 0 Install OpenCV on Jupyter Notebook Using Anaconda. If you need to install specific version you can use == to check the available version first like Jan 16, 2025 · Q: Why the package and import are different (opencv-python vs. Output: Install OpenCV in VS Code Verify OpenCV Installation Jan 8, 2025 · 打开Python解释器，输入import cv2，如果没有报错信息，说明安装成功。 接着，你可以运行 print(cv2. g. 安装 There are many ways to install OpenCV including installing from the source, installing via pip, and installing via apt. 安装完成后，你可以通过以下代码验证cv2库是否安装成功： import cv2. Installation Select your preferences and run the install command. Mar 18, 2025 · Then, try importing cv2: python import cv2 print(cv2. 2. If you need support for working videos: pip install opencv-contrib-python. Beginning with the installation: Type the command in the Terminal and proceed: Collecting Information and downloading data: Installing Packages: Finished Installation: To check if OpenCV is correctly installed, just run the following commands to perform a version check: python >>>import cv2 >>>print(cv2. Reading an image Open Python and type: import cv2. Install OpenCV Using pip. 4. 7. cv2 (old interface in old OpenCV versions was named as cv) is the name that OpenCV developers chose when they created the binding generators. import cv2 print (cv2. Aug 15, 2018 · apt-get install -y libsm6 libxext6 libxrender-dev pip3 install opencv-python python3 -c "import cv2" Share. Install all packages into their default locations. 9. After installation, open Python IDLE. __version__) If OpenCV is installed correctly, this will print the version number. 7 by default, and cv2 version is 2. 1. __version__) Output: 4. Python will be installed to C:/Python27/ in case of Python 2. But when I open python3, I can only import opencv and that opencv has no attribute version. __version__) If there are no import errors and it prints the version of OpenCV, the installation was successful. __version__) Jan 15, 2025 · import cv2 print (cv2. 1. Jun 9, 2025 · To install OpenCV in Python using “pip”, you should install “pip” if you don’t have it installed. Dec 11, 2012 · 파이썬(python)에서 동영상 관련된 것을 하다보면 import cv2를 볼 수 있을거에요. If you want to install the extra modules (e. For advanced users, installing OpenCV from source allows customization. Sep 11, 2019 · pip install opencv-python. 그래서 pip install cv2라고 쳐보지만 그런건 없다고 나옵니다. This is Aug 7, 2024 · pip install opencv-python. Enter import numpy and make sure Numpy is working fine. If no errors appear, OpenCV is successfully installed and ready to use! If no errors appear, OpenCV is successfully installed and ready to use! Read Full Article. opencv-python. : 4. __version__) which will print version of your installed opencv, e. 四、验证安装. Once installed, you can import cv2 in your Python script as follows: import cv2 Basic Image Reading and Display. __version__) 如果上述代码运行不报错，并且打印出OpenCV的版本号，说明cv2库安装成功。 五、常见问题及解决方法. If you need a non-GUI OpenCV: pip install opencv-python-headless. Improve this answer. Open your terminal or command prompt and install OpenCV using pip, the Python package manager: pip install opencv-python. Open your terminal or command prompt. version)” (without quotes). , for deep learning support), you can use: 3 days ago · Matplotlib (pip install matplotlib) (Matplotlib is optional, but recommended since we use it a lot in our tutorials). Now you can import cv2 and print its Nov 29, 2023 · Pythonの作業を効率化してくれるのが「cv2(OpenCV)」と呼ばれているライブラリです。cv2は、Pythonでは標準装備されていませんが、外部よりダウンロードすることで使用することが可能です。本記事ではPythonライブラリのcv2をインストールする方法や基本的な操作方法などについて解説します。 May 16, 2024 · pip install opencv-python Step 4: Import OpenCV in your Notebook. opencv-python-headless. 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 […] Mar 23, 2025 · The simplest way to install cv2 is using pip, the Python package installer. 5. jtrzjvquonkvshichytobboqesqajwwdumnopfvuofhvhednexbcl