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python之OpenCV的作用以及安装案例教程

作者:Holidaylovesam

这篇文章主要介绍了python之OpenCV的作用以及安装案例教程,本篇文章通过简要的案例,讲解了该项技术的了解与使用,以下就是详细内容,需要的朋友可以参考下

OpenCV的作用及安装

OpenCV简介

OpenCV是一个开源的跨平台计算机视觉库,可以运行在Linux、Windows、Android和Mac OS操作系统上。提供了Python、Ruby、MATLAB等语言的接口,并且实现了图像处理和计算机视觉方面的很多通用算法,可以给开发者调用。

OpenCV应用领域

OpenCV涉及的技术

OpenCV的安装

mac上安装opencv时,一开始使用pip3 install python-opencv时报错,提示:No matching distribution found for python-opencv,使用pip3 install opencv,也报错,提示找不到opencv,如图

alicedembp:~ alice$ pip3 install python-opencv

Collecting python-opencv

  Could not find a version that satisfies the requirement python-opencv (from versions: )

No matching distribution found for python-opencv

后来重新反过来试了一下pip3 install opencv-python,居然成功了 ,如图

alicedembp:~ alice$ pip3 install python-opencv
Collecting python-opencv
  Could not find a version that satisfies the requirement python-opencv (from versions: )
No matching distribution found for python-opencv
alicedembp:~ alice$ pip3 install opencv-python
Collecting opencv-python
  Downloading https://files.pythonhosted.org/packages/8d/ff/13e77ee7ac431f831e20d81a6bf0214ca1cf550cf9b575e3213e14325c81/opencv_python-4.1.0.25-cp37-cp37m-macosx_10_7_x86_64.macosx_10_9_intel.macosx_10_9_x86_64.macosx_10_10_intel.macosx_10_10_x86_64.whl (52.1MB)
    100% |████████████████████████████████| 52.1MB 735kB/s 
Requirement already satisfied: numpy>=1.14.5 in /Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages (from opencv-python) (1.16.1)
Installing collected packages: opencv-python
Successfully installed opencv-python-4.1.0.25
alicedembp:~ alice$ 

可以在终端使用命令行import cv2检验一下是否真的成功了

alicedembp:~ alice$ python
Python 3.7.0 (v3.7.0:1bf9cc5093, Jun 26 2018, 23:26:24) 
[Clang 6.0 (clang-600.0.57)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import cv2
>>> 

导入时无出错提示,确认已成功~也可通过cv2.__version__查看安装的版本,示例如下:

alicedembp:~ alice$ python
Python 3.7.0 (v3.7.0:1bf9cc5093, Jun 26 2018, 23:26:24) 
[Clang 6.0 (clang-600.0.57)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import cv2
>>> cv2.__version__
'4.1.0'

到此这篇关于python之OpenCV的作用以及安装案例教程的文章就介绍到这了,更多相关python之OpenCV的作用及安装内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家!

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