.NET TIFF文件：RGB无需第三方库CMYK转换可能吗？ [英] .NET TIFF file: RGB to CMYK conversion possible without a third party library?

问题描述

跟进我刚才的问题：是否以及如何将有可能采取基于RGB的 TIFF 文件并将它们转换成用以上标准.NET（3.5）功能，以CMYK？

Following up my previous question: if and how would it be possible to take RGB based TIFF files and convert them over to CMYK with standard .NET (3.5) functionality?

这是可能的呢？

推荐答案

其实，有使用System.Windows.Media.Imaging命名空间
只似乎与目前的TIFF正常工作（采用方式是为我好）：

Actually there is a way using the System.Windows.Media.Imaging namespace which only seems to work properly with TIFFs at the moment (which is fine for me):

    Stream imageStream = new
        FileStream(@"C:\temp\mike4.jpg", FileMode.Open, FileAccess.Read, FileShare.Read);
    BitmapSource myBitmapSource = BitmapFrame.Create(imageStream);
    FormatConvertedBitmap newFormatedBitmapSource = new FormatConvertedBitmap();
    newFormatedBitmapSource.BeginInit();
    newFormatedBitmapSource.Source = myBitmapSource;
    newFormatedBitmapSource.DestinationFormat = PixelFormats.Cmyk32;
    newFormatedBitmapSource.EndInit();

    BitmapEncoder encoder = new TiffBitmapEncoder();
    encoder.Frames.Add(BitmapFrame.Create(newFormatedBitmapSource));

    Stream cmykStream = new FileStream(@"C:\temp\mike4_CMYK.tif",

    FileMode.Create, FileAccess.Write, FileShare.Write);
    encoder.Save(cmykStream);
    cmykStream.Close();

请参阅的从RGB图像转换为CMYK ，由卡莱Mellergardh答案。

See "Converting images from RGB to CMYK", the answer by Calle Mellergardh.

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