public IMagickImage Execute(IMagickImage image, ValueItemCollection values)
{
Variables = values;
if (RemoveBackgroundActive)
{
image.ColorAlpha(MagickColors.Transparent);
image.Alpha(AlphaOption.Set);
image.VirtualPixelMethod = VirtualPixelMethod.Transparent;
// image.ColorFuzz = new Percentage(RemoveBackgroundThreshold);
// image.TransparentChroma(new MagickColor("#FFFFFF"), new MagickColor("#F0F0F0"));
// image.Transparent(MagickColor.FromRgb(255, 255, 255));
var clone = image.Clone();
clone.ColorFuzz = new Percentage(RemoveBackgroundThreshold);
clone.TransparentChroma(new MagickColor("#FFFFFF"), new MagickColor("#F0F0F0"));
clone.Transparent(MagickColor.FromRgb(255, 255, 255));
if (RemoveBackgroundFeather > 0)
{
clone.Scale(new Percentage(10));
clone.Blur(0, RemoveBackgroundFeather, Channels.Alpha);
clone.Resize(image.Width, image.Width);
}
image.Composite(clone, CompositeOperator.CopyAlpha);
image.Alpha(AlphaOption.Background);
using (MagickImageCollection images = new MagickImageCollection())
{
var back = new MagickImage(MagickColors.White, image.Width, image.Height);
images.Add(back);
images.Add(image);
image = images.Flatten().Clone();
}
}
// image.Threshold(new Percentage(RemoveBackgroundThreshold));
// image.Transparent(MagickColor.FromRgb(255, 255, 255));
return(image);
}
static public void RoundImage(this IMagickImage <byte> image)
{
using var mask = new MagickImage(MagickColors.Transparent, image.Width, image.Height);
new Drawables()
.FillColor(MagickColors.White)
.Circle(image.Width / 2, image.Height / 2, image.Width / 2, 0)
.Draw(mask);
image.Alpha(AlphaOption.On);
image.Composite(mask, CompositeOperator.Multiply);
}
private void CopyOpacity(IMagickImage image)
{
image.Alpha(AlphaOption.Off);
using (var gray = image.Clone())
{
gray.ColorSpace = ColorSpace.Gray;
gray.Negate();
gray.AdaptiveThreshold(FilterSize, FilterSize, FilterOffset);
gray.ContrastStretch((Percentage)0);
if (Threshold.HasValue)
{
gray.Blur((double)Threshold.Value / 100.0, Quantum.Max);
gray.Level(Threshold.Value, new Percentage(100));
}
image.Composite(gray, CompositeOperator.CopyAlpha);
image.Opaque(MagickColors.Transparent, BackgroundColor);
image.Alpha(AlphaOption.Off);
}
}
private void RemoveNoise(IMagickImage image)
{
using (var second = image.Clone())
{
second.ColorSpace = ColorSpace.Gray;
second.Negate();
second.AdaptiveThreshold(FilterSize, FilterSize, FilterOffset);
second.ContrastStretch((Percentage)0);
if (SmoothingThreshold != null)
{
second.Blur(SmoothingThreshold.Value.ToDouble() / 100, Quantum.Max);
second.Level(SmoothingThreshold.Value, new Percentage(100));
}
image.Composite(second, CompositeOperator.CopyAlpha);
}
image.Opaque(MagickColors.Transparent, BackgroundColor);
image.Alpha(AlphaOption.Off);
}
public void ShouldCopyTheAlphaChannelWithCopyAlpha()
{
var readSettings = new MagickReadSettings()
{
BackgroundColor = MagickColors.None,
FillColor = MagickColors.White,
FontPointsize = 100,
};
using (IMagickImage image = new MagickImage("label:Test", readSettings))
{
using (IMagickImage alpha = image.Clone())
{
alpha.Alpha(AlphaOption.Extract);
alpha.Shade(130, 30);
alpha.Composite(image, CompositeOperator.CopyAlpha);
ColorAssert.AreEqual(new MagickColor("#7fff7fff7fff0000"), alpha, 0, 0);
ColorAssert.AreEqual(new MagickColor("#7fff7fff7fffffff"), alpha, 30, 30);
}
}
}
private IMagickImage DistortOverlay(IMagickImage grayShirt, IMagickImage overlay, PointD[] overlayCoordinates, PointD[] tshirtCoordinates)
{
using (var images = new MagickImageCollection())
{
grayShirt.Alpha(AlphaOption.Transparent);
grayShirt.BackgroundColor = MagickColors.Transparent;
images.Add(grayShirt);
var croppedOverlay = CropOverlay(overlay, overlayCoordinates);
croppedOverlay.VirtualPixelMethod = VirtualPixelMethod.Transparent;
var arguments = CreateArguments(overlayCoordinates, tshirtCoordinates);
var distortSettings = new DistortSettings()
{
Bestfit = true
};
croppedOverlay.Distort(DistortMethod.Perspective, distortSettings, arguments);
ApplySharpen(croppedOverlay);
images.Add(croppedOverlay);
return(images.Merge());
}
}
/// <summary>
/// Write image data from a pdf file to a bitmap file
/// </summary>
/// <param name="imgData">Image Data</param>
private static void ConvertPdfToBmp(ImageData imgData)
{
MagickReadSettings settings = new MagickReadSettings();
// Settings the density to 600 dpi will create an image with a better quality
settings.Density = new Density(600);
using (MagickImageCollection images = new MagickImageCollection())
{
// Add all the pages of the pdf file to the collection
images.Read(imgData.PdfFilePath, settings);
// Create new image that appends all the pages horizontally
using (IMagickImage image = images.AppendVertically())
{
// Remove the transparency layers and color the background white
image.Alpha(AlphaOption.Remove);
image.Settings.BackgroundColor.A = 65535;
image.Settings.BackgroundColor.R = 65535;
image.Settings.BackgroundColor.G = 65535;
image.Settings.BackgroundColor.B = 65535;
// Convert the image to a bitmap
image.Format = MagickFormat.Bmp;
// Delete any old file
if (File.Exists(imgData.BmpFilePath))
{
File.Delete(imgData.BmpFilePath);
}
// Save result as a bmp
image.Write(imgData.BmpFilePath);
}
}
}
