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PdfCompressor1BitCompression Enumeration

Summary
Flags that specify the Compression type to be used with 1 bit images.

Syntax
C#
C++/CLI
Python
public enum PdfCompressor1BitCompression   
public enum class PdfCompressor1BitCompression   
class PdfCompressor1BitCompression(Enum): 
   Zip1Bit = 0 
   Lzw1Bit = 1 
   FaxG31D = 2 
   FaxG32D = 3 
   FaxG4 = 4 
   Jbig2 = 5 
Members
ValueMemberDescription
0Zip1Bit Use Zip Compression.
1Lzw1Bit Use LZW Compression.
2FaxG31D Use FAX CCITT G3 1D Compression.
3FaxG32D Use FAX CCITT G3 2D Compression.
4FaxG4 Use FAX CCITT G4 Compression.
5Jbig2 Use JBIG2 Compression.
Example
C#
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 only 
   if (e.Page != 0 && e.Segment.Type == SegmentTypeFlags.Background) 
      e.Cancel = true; 
   else 
      e.Cancel = false; 
 
} 
 
public void PdfCompressorExample_PdfDocument() 
{ 
   // Load an image 
   RasterCodecs 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 segment 
   compressionTypes.Comp1Bit = PdfCompressor1BitCompression.Zip1Bit; 
   compressionTypes.Comp2Bit = PdfCompressor2BitCompression.Lzw2Bit; 
   compressionTypes.CompPicture = PdfCompressorPictureCompression.JpgPic; 
   compressionTypes.QFactor = 2; 
   //Flags for used compression types should be set 
   compressionTypes.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:\LEADTOOLS22\Resources\Images"; 
} 
Requirements

Target Platforms

Help Version 22.0.2023.3.31
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© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.

Leadtools.PdfCompressor Assembly
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.