我做了自制下载opencv,但有问题。
如果我尝试再次安装它会显示
Warning: opencv 4.6.0_1 is already installed and up-to-date.
To reinstall 4.6.0_1, run:
brew reinstall opencv
但是如果我检查版本,它显示求助于~ opencv——versionZsh: command not found: opencv
我是一个超级初学者。请帮帮我:O
➜ ~ brew install opencv
Running `brew update --auto-update`...
==> Auto-updated Homebrew!
Updated 2 taps (homebrew/core and homebrew/cask).
You have 1 outdated formula installed.
You can upgrade it with brew upgrade
or list it with brew outdated.
Warning: opencv 4.6.0_1 is already installed and up-to-date.
To reinstall 4.6.0_1, run:
brew reinstall opencv
➜ ~ which opencv
opencv not found
➜ ~ opencv --version
zsh: command not found: opencv
homebrew
OpenCV 包没有安装一个可运行的程序,叫做opencv
,你可以运行:
opencv
相反,它安装库和包,您可以从Python或c++中使用。如果你想看到它安装的所有东西,你可以运行:
brew ls -v opencv
任何二进制(可执行)程序都可能位于名为bin
的目录中,因此您可以看到可能可运行的程序:
brew ls -v opencv | grep bin
我没有安装它,但我记得它曾经安装过一个名为opencv_version
的程序,所以你可以看到它是否在那里,并运行它:
/usr/local/bin/opencv_version
,并尝试添加-v
选项,看看它是如何构建的。
另一种测试它是否安装的方法是尝试使用它,例如在Python中:
python3 -c "import cv2; print(cv2.__version__)"
4.5.4