Generate EAN Barcode Using ZXing.Net and get a base64 string

I would like to generate EAN 13 Barcode using ZXing.NET in ASP.NET and convert it to the base64 string.

I have a problem how to convert BarcodeWriterPixelData which I'm getting from:

BarcodeWriterPixelData writer = new BarcodeWriterPixelData()
{
   Format = BarcodeFormat.EAN_13
};
var pixelData = writer.Write(barcodeModel.BarcodeNumber);

I was trying by using ImageSharp

var base64String = string.Empty;
using (Image<Rgba32> image = Image.Load<Rgba32>(pixelData.Pixels))
{
    base64String = image.ToBase64String();
}

But it's not working.