vs2017+ue4 4.20.3 配置opencv

1.在建立c++文件后导入插件https://github.com/Brandon-Wilson/OpenCV-Plugin
2.在ue4中edit->plugins中滑到最后勾选computer vision中的opencv中的enabled(这一步一定要先勾选好否则后面会报错）然后重启
3.在vs中编译，报错后把插件中的opencv.build.cs文件改成这样

// Some copyright should be here...

using UnrealBuildTool;
using System.IO;

public class OpenCV : ModuleRules
{
    private string ThirdPartyPath
    {
        get { return Path.GetFullPath(Path.Combine(ModuleDirectory, "../../../../ThirdParty/")); }
    }

    public OpenCV(ReadOnlyTargetRules Target) : base(Target)
    {
        // Startard Module Dependencies
        PublicDependencyModuleNames.AddRange(new string[] { "Core", "RHI", "RenderCore" });
        PrivateDependencyModuleNames.AddRange(new string[] { "CoreUObject", "Engine", "Slate", "SlateCore" });

        // Start OpenCV linking here!
        bool isLibrarySupported = false;

        // Create OpenCV Path 
        string OpenCVPath = Path.Combine(ThirdPartyPath, "OpenCV");

        // Get Library Path 
        string LibPath = "";
        bool isdebug = Target.Configuration == UnrealTargetConfiguration.Debug && Target.bDebugBuildsActuallyUseDebugCRT;
        if (Target.Platform == UnrealTargetPlatform.Win64)
        {
            LibPath = Path.Combine(OpenCVPath, "Libraries", "Win64");
            isLibrarySupported = true;
        }
        else if (Target.Platform == UnrealTargetPlatform.Win32)
        {
            // TODO: add OpenCV binaries for Win32
        }
        else if (Target.Platform == UnrealTargetPlatform.Mac)
        {
            // TODO: add OpenCV binaries for Mac
        }
        else if (Target.Platform == UnrealTargetPlatform.Linux)
        {
            // TODO: add OpenCV binaries for Linux
        }
        else
        {
            string Err = string.Format("{0} dedicated server is made to depend on {1}. We want to avoid this, please correct module dependencies.", Target.Platform.ToString(), this.ToString()); System.Console.WriteLine(Err);
        }

        if (isLibrarySupported)
        {
            //Add Include path 
            PublicIncludePaths.AddRange(new string[] { Path.Combine(OpenCVPath, "Includes") });

            // Add Library Path 
            PublicLibraryPaths.Add(LibPath);

            //Add Static Libraries
            PublicAdditionalLibraries.Add("opencv_world320.lib");

            //Add Dynamic Libraries
            PublicDelayLoadDLLs.Add("opencv_world320.dll");
            PublicDelayLoadDLLs.Add("opencv_ffmpeg320_64.dll");

        }

        Definitions.Add(string.Format("WITH_OPENCV_BINDING={0}", isLibrarySupported ? 1 : 0));
    }
}

4.编译，就导入成功了

参考https://wiki.unrealengine.com/Detailed_Account_Of_Integrating_OpenCV_Into_UE4_With_VS2017

5.后续测试参考https://blog.csdn.net/zhyy2345/article/details/52161984亲测有用