关于opencv：用自制软件和python3安装opencv3时出错

Error in installing opencv3 with homebrew and python3

我正在使用自制软件在 OSX(EI Captain)上安装 opencv3，

1	brew install opencv3 --with-contrib --with-python3 --HEAD

并且发生错误：

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Updating Homebrew...
==> Installing opencv3 from homebrew/science
==> Cloning https://github.com/opencv/opencv.git
Updating /Users/ksun/Library/Caches/Homebrew/opencv3--git
==> Checking out branch master
==> Cloning https://github.com/opencv/opencv_contrib.git
Updating /Users/ksun/Library/Caches/Homebrew/opencv3--contrib--git
> ==> Checking out branch master
Error: No such file or directory - /private/tmp/opencv3-20170330-14255-bxsn05/3rdparty/ippicv/downloader.cmake

你们能帮我找出解决方法吗？

我做brew edit opencv3，然后注释下面一行

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inreplace buildpath/"3rdparty/ippicv/downloader.cmake",
"${OPENCV_ICV_PLATFORM}-${OPENCV_ICV_PACKAGE_HASH}",
"${OPENCV_ICV_PLATFORM}"

然后您可以使用 --HEAD

重新安装

opencv 存储库修复了一些问题，还删除了文件 3rdparty/ippicv/downloader.cmake，因此无需再对其进行修补。但是他们没有发布新版本，所以要安装 --with-contrib，你必须使用 --HEAD 安装，但禁用文件 3rdparty/ippicv/downloader.cmake

的补丁

相关讨论

当我搜索 OpenCV Java 问题时，这是第一个结果。我正在为使用 OpenCV Java 的任何人发布我的答案，以发现它也很有用。

我正在关注这篇文章：https://opencv-java-tutorials.readthedocs.io/en/latest/01-installing-opencv-for-java.html

1 2	brew tap homebrew/science brew install opencv3 --HEAD --with-contrib --with-java

我尝试从上述命令中删除 --HEAD 并且能够成功安装它。

1	brew install opencv3 --with-contrib --with-java

根据这篇文章：https://github.com/Homebrew/homebrew-science/issues/5498

我已经通过以下方式解决了这个问题：

1	$ brew edit opencv3

找到以下代码块并注释所有 4 行：

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if build.with?("python3") && build.with?("python")
# Opencv3 Does not support building both Python 2 and 3 versions
odie"opencv3: Does not support building both Python 2 and 3 wrappers"
end

最后使用 brew install 命令安装：

1	$ brew install opencv3 --with-contrib --with-python3

参考：http://www.pyimagesearch.com/2017/05/15/resolving-macos-opencv-homebrew-install-errors/