Question

我正在尝试使用本教程在我的 Mac 上安装 OpenCV：https://medium.com/macoclock/setting-up-mac-for-opencv-java-development-with-intellij-idea-fd2153eb634f

当我这样做时：

<块引用>

brew 安装 opencv

我收到：

==> Searching for similarly named formulae... 
These similarly named formulae were found: 
opencv                     opencv@2               opencv@3 
To install one of them, run (for example):   
brew install opencv 
Error: No available formula or cask with the name "opencv".
==> Searching taps on GitHub... 
Error: No formulae found in taps.

它显示“opencv”公式，为什么不安装它？如何修复？

我也做过：

> xcode-select --install
xcode-select: error: command line tools are already installed, use "Software Update" to install updates

和

> brew install ant
Warning: ant 1.10.9 is already installed and up-to-date
To reinstall 1.10.9, run `brew reinstall ant`

尝试时

<块引用>

brew install --build-from-source opencv

然后收到同样的错误。

也试过了：

> brew uninstall opencv
Error: No available formula or cask with the name "opencv".

Answer 1

显然，通过自制软件安装 OpenCV 比 brew install opencv 更重要。

您需要确保已安装 XCode 命令行工具以及 ANT。然后你需要运行

brew install --build-from-source opencv

查看 documentation 以了解详细信息。

也可能是自制软件的问题 - 所以更新 brew 并运行医生。

Answer 2

我找到了通过 Maven 获取 OpenCV 的更简单方法。

添加到 pom.xml：

<dependencies>
    <!-- https://mvnrepository.com/artifact/org.openpnp/opencv -->
    <dependency>
        <groupId>org.openpnp</groupId>
        <artifactId>opencv</artifactId>
        <version>4.3.0-3</version>
    </dependency>
</dependencies>

添加依赖后，需要加载库使用。通常，您会使用以下行：

System.loadLibrary(Core.NATIVE_LIBRARY_NAME);

但是它不适用于这种方法。您需要将其更改为以下几行之一：

nu.pattern.OpenCV.loadShared();
nu.pattern.OpenCV.loadLocally(); // Use in case loadShared() doesn't work

所以测试的最终结果是：

import org.opencv.core.Core;

public class HelloCV {
    static {
        nu.pattern.OpenCV.loadShared();
        // nu.pattern.OpenCV.loadLocally(); // Use in case loadShared() doesn't work
    }

    public static void main(String[] args) {
        System.out.println(Core.VERSION);
        System.out.println(Core.VERSION_MAJOR);
        System.out.println(Core.VERSION_MINOR);
        System.out.println(Core.VERSION_REVISION);
        System.out.println(Core.NATIVE_LIBRARY_NAME);
        System.out.println(Core.getBuildInformation());
    }
}

在 Mac Catalina 上安装 OpenCV

2 个答案: