Jbig2EncodeModeCompression Enumeration

Option values used to specify the encoding mode to use when creating the Jbig2 file.

Syntax

Visual Basic
C#
Managed Extensions for C++
C++/CLI

'Declaration
 
Public Enum Jbig2EncodeModeCompression 
   Inherits System.Enum

'Usage
 
Dim instance As Jbig2EncodeModeCompression

public enum Jbig2EncodeModeCompression : System.Enum

__value public enum Jbig2EncodeModeCompression : public System.Enum

public enum class Jbig2EncodeModeCompression : public System.Enum

Members

Member	Value	Description
AutoDetect	0	Lossless Generic_MQ
LosslessGenericMmr	2	Fast, very good lossless compression similar to G4 coding, uses Huffman/MMRcoding. Use this option for any content.
LosslessGenericMq	1	Fast, great lossless compression which uses MQ arithmetic coding. Use this option for any content.
LosslessTextMmr	4	Very good lossless compression which uses Huffman/MMR coding. Use this option for text or symbols.
LosslessTextMq	3	Great lossless compression possible which uses MQ arithmetic coding. Use this option for text or symbols.
LosslessTextSpmMmr	6	The best lossless compression for text and symbols. This option uses Huffman/MMR coding plus MQ arithmetic coding.
LosslessTextSpmMq	5	The best lossless compression for text and symbols. This option uses MQ arithmetic coding.
LossyHalftoneMmr	10	Good lossy compression for halftones. This option uses Huffman/MMR coding.
LossyHalftoneMq	9	Good lossy compression for halftones. This option uses MQ arithmetic coding.
LossyTextMmr	8	Very good lossy compression for text or symbols. This option uses Huffman/MMR coding.
LossyTextMq	7	Great lossy compression for text or symbols. This option uses MQ arithmetic coding.

Remarks

The default value is AutoDetect.

Text regions can be encoded as lossless or as lossy according to the encoding mode specified. The lossy modes use the value in the SaveOptionsJbig2.LoosenessCompression value to control how loose to be when matching symbols and thereby increase compression and reduce file size. Compression means loss and a consequence of higher compression is an increased risk of errors in the reconstructed image.

Specify a larger value of looseness to reduce the compressed file size; use a smaller value to reduce the errors, if any. Halftone regions can be encoded lossy by specifying one of the lossy halftone encoding modes. Alternatively, they can be encoded lossless by using the lossless generic encoding mode.

Note: Available in Professional edition.

Inheritance Hierarchy

System.Object
   System.ValueType
      System.Enum
         Accusoft.ImagXpressSdk.Jbig2EncodeModeCompression

Reference

Accusoft.ImagXpressSdk Namespace