Rust 使用opencv需要先安装opencv，然后安装rust对opencv的绑定，opencv-rust库已经为我们做好了这些绑定，我们rust天假opencv-rust的依赖就可以了。
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opencv-rust (this link opens in a new window) by twistedfall (this link opens in a new window)
Rust bindings for OpenCV 3 & 4
一、Mac配置opencv-rust方法
首先安装opencv，在终端运行下列命令
brew install opencv