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Trial SDK w/JBIG2 Codec

DotImage JBIG2 Codec

DotImage JBIG2 codec can be used to decode and encode JBIG2 images using the Microsoft .NET Framework.  JBIG2 compression is an open standard and can compress bi-tonal images 2 - 5 times more than the same image compressed with the industry standard TIFF CCIT Group4 compression. The codec is available as a plug-in that integrates with DotImage seamlessly.  DotImage JBIG2 is based off of Luratech's Lurawave.jb2 compression technology.  Licensing is runtime royalty free for desktop applications. The JBIG2 Codec is also included in the comprehensive DotImage Capture Suite and DotImage Web Viewing Suite.


JBIG2 OverviewArchiving/Compression

The JBIG2 standard has been developed by the Joint Bi-level Experts Group (JBIG) for the efficient lossless and lossy compression of bilevel (black and white) images.  It is capable of compressing black and white documents considerably more than the more commonly used CCIT Group 4 TIFF compression. 

The use of symbol dictionaries and symbol matching in JBIG2 enables very effective encoding of documents containing recurring symbols, making JBIG2 ideal for compressing documents.  JBIG2 has been made popular by Adobe's PDF, which incorporates JBIG2 in the PDF 1.5 specification.  See our DotImage PDFRasterizer which includes JBIG2 support for reading these types of PDF documents.

Product Features

  • Ability to decode any page from a 1-bit JBIG2 image.
  • Encode a single or multipage document as a JBIG2 image, an image only PDF document.
  • Supports Lossless or Lossy compression
  • Supports encoding or decoding from any stream
  • Read a specified region from an existing JBIG2 image stream.
  • Generate image only PDF documents with embedded JBIG2 images.
  • Integrated with DotImage's PDFEncoder to encode PDF images with other compression formats.
  • Runtime Royalty Free Desktop Licensing

Compression Examples

  Uncompressed CCIT Group IV JBIG2 Lossless JBIG2 Lossy PDF w/ Lossless JBIG2
3-page FAX, 1728 x 2293 1,454 Kb 121 Kb 24 Kb 23 Kb 26 Kb
strip chart grid scan, 9760x6976 8,321 Kb 1,088 Kb 675 Kb 674 Kb 676 Kb
Mechanical CAD drawing, 9259x6816 7,716 Kb 209 Kb 104 Kb 100 Kb 105 Kb

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