public override async IAsyncEnumerable <AlgorithmResultElement> AddWatermark([EnumeratorCancellation] CancellationToken ct)
{
complexImage = ComplexImage.FromBitmap(parameters.Original);
complexWatermark = ComplexImage.FromBitmap(parameters.Watermark, complexImage.Width);
ct.ThrowIfCancellationRequested();
complexImage.ForwardFourierTransform();
var fourierDomain = complexImage.ToEffectiveBitmapFourier();
yield return(new AlgorithmResultElement("Fourier domain (DFT)", fourierDomain.ToBitmap(parameters.Original.Size), new ResultDescription(ToString())));
ct.ThrowIfCancellationRequested();
complexWatermark.ForwardFourierTransform();
complexImage.EmbedImageFourier(complexWatermark, parameters.Key, parameters.Alpha);
var fourierDomainWatermarked = complexImage.ToEffectiveBitmapFourier();
yield return(new AlgorithmResultElement("DFT + watermark", fourierDomainWatermarked.ToBitmap(parameters.Original.Size), new ResultDescription(ToString())));
ct.ThrowIfCancellationRequested();
complexImage.BackwardFourierTransform();
var watermarked = complexImage.ToEffectiveBitmapFourier();
yield return(new AlgorithmResultElement("Watermarked", watermarked.ToBitmap(parameters.Original.Size), new ResultDescription(ToString())));
}
