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[FlagsAttribute()]public enum SegmentTypeFlags
| Value | Member | Description |
|---|---|---|
| 0x00000000 | Background | The segment uses one color that represents the image background. |
| 0x00000001 | OneBit | The segment is a 1BPP image. |
| 0x00000002 | OnBitBW | The segment is a 1BPP black and white image. |
| 0x00000003 | TwoBit | The segment is a 2BPP image. |
| 0x00000004 | TwoBitGray | The segment is a 2BPP gray scale image. |
| 0x00000005 | Gray | The segment is a gray scale image. |
| 0x00000006 | Picture | The segment is a picture. |
| 0x00000007 | TwoBitBW | The segment is a 2BPP black and white image. |
| 0x00000008 | OneColor | The segment has only one color. |
using Leadtools;using Leadtools.PdfCompressor;using Leadtools.Codecs;public void pdfCompressor_SegmentImage_PdfDocument(object sender, PdfCompressorSegmentImageEventArgs e){//This will prevent addition to any segment with type background in all pages except the first page onlyif (e.Page != 0 && e.Segment.Type == SegmentTypeFlags.Background)e.Cancel = true;elsee.Cancel = false;}public void PdfCompressorExample_PdfDocument(){// Load an imageRasterCodecs codecs = new RasterCodecs();codecs.ThrowExceptionsOnInvalidImages = true;RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "MRCSegmentation.mrc"));PdfCompressorEngine pdfCompressor = new PdfCompressorEngine();PdfCompressorCompressionTypes compressionTypes = new PdfCompressorCompressionTypes();//Sets compression types needed for each segmentcompressionTypes.Comp1Bit = PdfCompressor1BitCompression.Zip1Bit;compressionTypes.Comp2Bit = PdfCompressor2BitCompression.Lzw2Bit;compressionTypes.CompPicture = PdfCompressorPictureCompression.JpgPic;compressionTypes.QFactor = 2;//Flags for used compression types should be setcompressionTypes.Flags = EnabledCompressionsFlags.EnableOneBit |EnabledCompressionsFlags.EnableTwoBit |EnabledCompressionsFlags.EnablePicture;pdfCompressor.SetCompression(compressionTypes);pdfCompressor.Insert(image);pdfCompressor.SegmentImage += new EventHandler<PdfCompressorSegmentImageEventArgs>(pdfCompressor_SegmentImage_PdfDocument);pdfCompressor.Write(Path.Combine(LEAD_VARS.ImagesDir, "Out_Image.pdf"));}static class LEAD_VARS{public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images";}