protected override UIImage Transform(UIImage source)
{
using (var colorSpace = CGColorSpace.CreateDeviceGray())
{
return(ColorSpaceTransformation.ToColorSpace(source, colorSpace));
}
}
protected override UIImage Transform(UIImage sourceBitmap, string path, Work.ImageSource source, bool isPlaceholder, string key)
{
using (var colorSpace = CGColorSpace.CreateDeviceGray())
{
return(ColorSpaceTransformation.ToColorSpace(sourceBitmap, colorSpace));
}
}
public static Bitmap ToGrayscale(Bitmap source)
{
using (var colorMatrix = new ColorMatrix())
{
colorMatrix.SetSaturation(0f);
return(ColorSpaceTransformation.ToColorSpace(source, colorMatrix));
}
}
public static UIImage ToSepia(UIImage source)
{
using (var filter = new CISepiaTone()
{
Intensity = 0.8f
})
{
return(ColorSpaceTransformation.ToFilter(source, filter));
}
}
public static Bitmap ToSepia(Bitmap source)
{
using (ColorMatrix saturation = new ColorMatrix())
using (ColorMatrix rgbFilter = new ColorMatrix())
{
saturation.SetSaturation(0f);
rgbFilter.SetScale(1.0f, 0.95f, 0.82f, 1.0f);
saturation.SetConcat(rgbFilter, saturation);
return(ColorSpaceTransformation.ToColorSpace(source, saturation));
}
}