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LuraDocument
LuraDocument PDF(/A) uses the same technology as LuraDocument JPM for partitioning a document into three segments containing text, fore- and background images. Compressed documents are stored as a standard PDF(/A) file instead of an ISO compliant JPM file. Files created with LuraDocument PDF(/A) can be viewed in Acrobat Reader 7.0 and 6.0 as well as in Acrobat Reader 5.0 using the comaptibility mode without installing any additional plug-in.

LuraDocument PDF(/A) files achieve the same quality at nearly identical filesize as files compressed with LuraDocument JPM. Therewith they are significantly smaller than conventional PDF(/A) files.

Due to easy viewing with Acrobat Reader LuraDocument PDF(/A) is especially suited where files are exchanged frequently. Against the use of the high-class LuraDocument JPM format is recommended whenever compressed documents are to be processed automatically (e.g. OCR).

LuraDocument PDF(/A) is available as:
  • Exporter for KODAK Capture Software: outputs scanned documents into compressed PDF, PDF/A and JPEG2000/Part6 (JPM) files, designed for Kodak Capture Software
  • QuickScan Pro Exporter: outputs scanned documents into compressed PDF, PDF/A and JPEG2000/Part6 (JPM) files, designed for EMC Captiva® QuickScan Pro
  • C-SDK / .NET-SDK: The LuraDocument PDF C-SDK and .NET-SDK (Software Development Kits) enable integration of Mixed Raster Content (MRC) compression into any C/C++-based or .NET-based application.
  • LuraDocument PDF Compressor: converts scanned black and white or color documents to compressed PDF(/A) files.
  • LuraDocument PDF Printer: converts electronic documents into PDF/A compatible files from a wide range of applications
  • LuraDocument PDF Validator: checks PDF files for their compatibility with the PDF/A standard, available as Desktop or Command Line Tool
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The Advantages of LuraDocument PDF in Overview:
  • Reduced Costs
    • through accelerated data transfer in inter- and intranet
    • through decreased storage space demands

  • Improved Handling of Your Documents
    • through the higher information content of color documents
    • through internet capability
    • through multi-page capability
    • through easy integration into existing systems

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The Features of LuraDocument PDF
LuraDocument PDF is distinguished by the following features:

  • System independent administration of digital documents at significantly reduced storage requirements.
  • Unified, standard compliant file format for documents from varying sources.
  • Significantly improved quality of compressed images compared to standard tools
    • through seperation of text and image components compressed using
      • bilevel compression for the text segments and
      • JPEG2000 compression for the grayscale or color image components
    • through the storage of documents made up of several pages in one file (Multipage Format)
    • through completely seperated text layers
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The Concepts Behind LuraDocument PDF
LuraDocument PDF is a document compression software preserving both the readability of text and the visual quality and color of images within a compound document. The underlying concept of the compression process is the partitioning of the document into three distinct segments:
  • a bilevel image containing text,
  • a foreground image containing the color information of the text segments and
  • a residual image devoid of text components.
Each distinct segment is then compressed using seperate algorithms specifically adapted to the corresponding type of data. The text is compressed losslessy using the Fax G4 format, the fore- and background is highly compressed using the JPEG2000 format - providing the well known, good image quality at a high compression rate.

LuraDocument proves to be particularly efficient for documents containing large image components. The example shows a magazine page scanned at 300 dpi.
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Comparison of Quality
(Section from a 300 dpi Document)
Comparison of Quality
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Products Based on LuraDocument PDF
LuraDocument PDF-Products Win32
Applications:
LuraDocument PDF Compressor X
Developer Tools:
C-SDK X
PDF
>Overview
>JPM
>PDF(/A)
>JBIG2
>LDF
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LuraWave JP2 Image Content Server
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