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Joined: 4/28/2019(UTC)
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How can I convert a rgb png image with transparent background to a cmyk png image with transparent background Code:using (var reader = ImageReader.Create(@"C:/temp/argb.png"))
using (var converter = new ColorConverter(PixelFormat.Format40bppAcmyk))
using (var writer = ImageWriter.Create(@"C:/temp/test_USWebCoatedSWOP.png"))
{
converter.DefaultSourceProfile = ColorProfile.FromSrgb();
converter.DestinationProfile = new ColorProfile(@"C:/temp/USWebCoatedSWOP.icc");
Pipeline.Run(reader + converter + writer);
}
here is my code , and it throw a exception Code:Aurigma.GraphicsMill.UnsupportedPixelFormatException
HResult=0x80131500
Message=The specified pixel format is not supported.
Source=Aurigma.GraphicsMill
StackTrace:
at Aurigma.GraphicsMill.GMException.ThrowManagedException(IntPtr unmanagedException)
at Aurigma.GraphicsMill.PipelineElement.RunPipeline()
at Aurigma.GraphicsMill.Pipeline.Run()
Edited by moderator Sunday, April 28, 2019 8:42:27 AM(UTC)
| Reason: Not specified
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Rank: Advanced Member
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Joined: 7/28/2003(UTC)
Posts: 1,660
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The PNG format was designed for web graphics and doesn't support the CMYK color space. TIFF is the only format which supports CMYK and transparency. So just save to a TIFF file to solve the problem. |
Best regards, Fedor Skvortsov |
 1 user thanked Fedor for this useful post.
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