how to call opencv c++ codes by xamarin c# code?

Question

I have some opencv c++ codes.
I want to call opencv c++ codes at xamarin c# codes.
How should I do?

Answer 1

Hello,

Welcome to our Microsoft Q&A platform!

Since the opencv code has to be compiled to native code for each platform, so we have to have a separate library for each platform.

In IOS,you can create a static framework using Xcode and write opencv functions using C++. Then you need to bind (map) the static framework to Xamarin using a binding project.

Here is an example of how to do: https://github.com/trinnguyen/xamarin.ios-opencv .

Here is an article describing the steps: https://chamoda.com/how-to-use-opencv-with-xamarin-ios/

[BaseType(typeof(NSObject))]  
interface OpenCV  
{  
  
    [Export("version:")]  
    NSString Version();  
  
}  
  
private OpenCV OpenCV = new OpenCV();  
  
Console.WriteLine(OpenCV.Version());  

Here is a similar thread, you can check :https://stackoverflow.com/questions/13493149/calling-opencv-c-code-in-c-sharp-application

You can also check microsoft tutorial here: Bring Some C++ to Xamarin Apps | The Xamarin Show

Best Regards,

Jessie Zhang

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