![Extract portrait and replace background(image matting) by code, using C# .NET and OpenCVSharp | by Zack Yang | Medium Extract portrait and replace background(image matting) by code, using C# .NET and OpenCVSharp | by Zack Yang | Medium](https://miro.medium.com/v2/resize:fit:1358/1*nkqtiiEg33Zhz9kpb0OA7g.png)
Extract portrait and replace background(image matting) by code, using C# .NET and OpenCVSharp | by Zack Yang | Medium
![c# - The type or namespace name 'Extensions' does not exist in the namespace 'OpenCvSharp' (are you missing an assembly reference?) - Stack Overflow c# - The type or namespace name 'Extensions' does not exist in the namespace 'OpenCvSharp' (are you missing an assembly reference?) - Stack Overflow](https://i.stack.imgur.com/Xc6ic.png)
c# - The type or namespace name 'Extensions' does not exist in the namespace 'OpenCvSharp' (are you missing an assembly reference?) - Stack Overflow
![Extract portrait and replace background(image matting) by code, using C# .NET and OpenCVSharp | by Zack Yang | Medium Extract portrait and replace background(image matting) by code, using C# .NET and OpenCVSharp | by Zack Yang | Medium](https://miro.medium.com/v2/resize:fit:768/1*E8ju_8G8dQR6fYea1b6WtQ.png)
Extract portrait and replace background(image matting) by code, using C# .NET and OpenCVSharp | by Zack Yang | Medium
![Extract portrait and replace background(image matting) by code, using C# .NET and OpenCVSharp | by Zack Yang | Medium Extract portrait and replace background(image matting) by code, using C# .NET and OpenCVSharp | by Zack Yang | Medium](https://miro.medium.com/v2/resize:fit:553/1*B29ugZ4G8Q0VpaEi-5ZxXw.png)