OpenCV介紹

OpenCV是一個基於BSD許可（開源）發行的跨平臺計算機視覺庫，可以執行在Linux、Windows、Android和Mac OS作業系統上。它輕量級而且高效——由一系列 C 函式和少量 C++ 類構成，同時提供了Python、Ruby、MATLAB等語言的介面，實現了影象處理和計算機視覺方面的很多通用演算法。

OpenCV用C++語言編寫，它的主要介面也是C++語言，但是依然保留了大量的C語言介面。該庫也有大量的Python、Java and MATLAB/OCTAVE（版本2.5）的介面。這些語言的API介面函式可以通過線上文件獲得。如今也提供對於C#、Ch、Ruby,GO的支援。

OpenCV 擁有包括 500 多個C函式的跨平臺的中、高層 API。它不依賴於其它的外部庫——儘管也可以使用某些外部庫。

所有新的開發和演算法都是用C++介面。一個使用CUDA的GPU介面也於2010年9月開始實現。

OpenCV 為Intel Integrated Performance Primitives（IPP）提供了透明介面。這意味著如果有為特定處理器優化的 IPP 庫，OpenCV 將在執行時自動載入這些庫。

注：OpenCV 2.0版的程式碼已顯著優化，無需IPP來提升效能，故2.0版不再提供IPP介面。

好了，下面開始今天的正文。

安裝python-3.7.3-amd64.exe

命令列進入到你Python的安裝目錄中的Scripts下：D:\Program Files\Python37\Scripts

安裝pip

進入Python安裝目錄下的Scripts路徑，執行 easy_install.exe pip

安裝wheel

進入Python安裝目錄下的Scripts路徑，執行 pip install wheel

安裝numpy

進入Python安裝目錄下的Scripts路徑，執行 pip install numpy

安裝opencv

進入Python安裝目錄下的Scripts路徑，執行 pip install opencv-python

Microsoft Windows [版本 10.0.17134.706]
(c) 2018 Microsoft Corporation。保留所有權利。

C:\Users\LiuJing>D:

D:\>cd D:\Program Files\Python37\Scripts

D:\Program Files\Python37\Scripts>easy_install.exe pip
Searching for pip
Best match: pip 19.0.3
Adding pip 19.0.3 to easy-install.pth file
Installing pip-script.py script to d:\program files\python37\Scripts
Installing pip.exe script to d:\program files\python37\Scripts
Installing pip3-script.py script to d:\program files\python37\Scripts
Installing pip3.exe script to d:\program files\python37\Scripts
Installing pip3.7-script.py script to d:\program files\python37\Scripts
Installing pip3.7.exe script to d:\program files\python37\Scripts

Using d:\program files\python37\lib\site-packages
Processing dependencies for pip
Finished processing dependencies for pip

D:\Program Files\Python37\Scripts>pip install wheel
Collecting wheel
 Downloading https://files.pythonhosted.org/packages/96/ba/a4702cbb6a3a485239fbe9525443446203f00771af9ac000fa3ef2788201/wheel-0.33.1-py2.py3-none-any.whl
Installing collected packages: wheel
Successfully installed wheel-0.33.1
You are using pip version 19.0.3,however version 19.1 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command.

D:\Program Files\Python37\Scripts>pip install numpy
Collecting numpy
 Downloading https://files.pythonhosted.org/packages/4e/9d/c129d78e6b942303b762ccfdf1f8339de80c5e6021b14ef0c99ec5bdc6aa/numpy-1.16.3-cp37-cp37m-win_amd64.whl (11.9MB)
  100% |████████████████████████████████| 11.9MB 197kB/s
Installing collected packages: numpy
Successfully installed numpy-1.16.3
You are using pip version 19.0.3,however version 19.1 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command.

D:\Program Files\Python37\Scripts>pip install opencv-python
Collecting opencv-python
 Downloading https://files.pythonhosted.org/packages/a3/50/04d0669afe884f137c2f490642756e8c4a658254300a9eaf253d1e643085/opencv_python-4.1.0.25-cp37-cp37m-win_amd64.whl (37.3MB)
  100% |████████████████████████████████| 37.4MB 150kB/s
Requirement already satisfied: numpy>=1.14.5 in d:\program files\python37\lib\site-packages (from opencv-python) (1.16.3)
Installing collected packages: opencv-python
Successfully installed opencv-python-4.1.0.25
You are using pip version 19.0.3,however version 19.1 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command.

D:\Program Files\Python37\Scripts>

import cv2

img = cv2.imread("01.jpg")
cv2.imshow("1",img)
cv2.waitKey(10000)

如果能匯入並顯示圖片則成功

總結

到此這篇關於Python安裝OpenCV的示例程式碼的文章就介紹到這了,更多相關Python安裝OpenCV內容請搜尋我們以前的文章或繼續瀏覽下面的相關文章希望大家以後多多支援我們！