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  • python 下 安装openCV

    安装openCV

    openCV是Intel 创建的计算机视觉库,用于计算机图像处理。
    安装anaconda,在命令行中输入conda install cv2/opencv
    

    报错汇总

    网络连接问题

    报错描述:

    在输入下载安装命令后出现网络连接问题
    

    C:Usersning0>conda install numpy
    Fetching package metadata ...
    CondaHTTPError: HTTP None None for url https://repo.continuum.io/pkg...
    Elapsed: None
    An HTTP error occurred when trying to retrieve this URL.
    HTTP errors are often intermittent, and a simple retry will get you on your way.
    ProxyError(MaxRetryError("HTTPSConnectionPool(host='repo.continuum.io', port=443): Max retries exceeded with url: /pkgs/free/win-64/repodata.json.bz2 (Caused by ProxyError('Cannot connect to proxy.', NewConnectionError('<requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x00000000048F3048>: Failed to establish a new connection: [Errno 10061] ',)))",),)

    解决方法:

        conda config --add channels https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/
        conda config --set show_channel_urls yes    
    

    输入以上指令再下载,若还不能解决问题,查看博客

    报错描述:

    在python中import cv2 报错:Error import cv2 : ImportError: numpy.core.multiarray failed to import
    

    解决方法:

    错误原因是因为numpy的版本太旧,更新新版本的numpy可解决此问题
    
        pip install -U numpy
    

    或者

        conda update numpy
    
    注:对于装有多个python 的电脑,要分清编译器使用的python位置和命令行中的python,是否是同一个,使用
    
        numpy.version.version
        numpy.__file__
    

    查看numpy的版本和位置,在libsite-packeges,将新的numpy文件覆盖掉旧的numpy文件

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  • 原文地址:https://www.cnblogs.com/qiwenzhou/p/7608277.html
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