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Available as an Add-on for LEADTOOLS Imaging Pro, Vector, Document, and Medical Imaging toolkits. |
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Available as an Add-on for LEADTOOLS Imaging Pro, Vector, Document, and Medical Imaging toolkits. |
LEADTOOLS Raster Portable Document Format (PDF) Plug-ins
LEADTOOLS Raster PDF Plug-ins extend support to include PDF, Postscript, and EPS formats, providing capability for loading, saving, viewing, rasterizing, and encoding PDF, Postscript, and EPS files. The Plug-ins integrate seamlessly with the broad imaging functionality of LEADTOOLS toolkits, such as specialized display, color-conversion, image-processing, scanning, annotations, and document clean-up.
PDF has become a widely-adopted standard for reproducing documents over the web. Because of its high precision and accuracy in representing text and pictures along with its "hyper" nature, PDF has become a popular supplement or alternative to HTML and Postscript.
The PDF format was developed by Adobe Corporation to allow users to exchange and view electronic documents in an easy and reliable way, independent of the environment in which these documents were created. A PDF file looks the same on the screen and in print regardless of what kind of machine you are using, or which software package was used to create the file. One major advantage of PDF is that a large document can be compressed sufficiently for quick download, yet will display content as if you were looking at the original (print) source such as a book or magazine.
Postscript is a simple interpretive page description language. Postscript is the language that most advanced laser printers use in order to render electronic information on a printed page. EPS stands for Encapsulated PostScript. An EPS file is a PostScript language program describing the appearance of a single page.
Loading Capabilities
The LEADTOOLS Raster PDF Read plug-ins have the following import capabilities:
Loads PDF 1.4 files.
Loads PostScript Language Level 3 files.
Loads EPS files.
Load the entire document or a specified set of sequential pages.
Rasterization Capabilities
Control pixel depth - Valid values are 1,4,8 and 24.
Control horizontal resolution in dots per inch.
Control vertical resolution in dots per inch.
Use fonts installed by the plug-in or system fonts.
Font anti-aliasing - Valid values are 1-bit(no anti-aliasing) , 2-bit and 4-bit.
Graphics anti-aliasing - 1-bit , 2-bit and 4-bit.
Saving Capabilities
Full multi-page write support for the PDF format is provided by the PDF Write module . You can append, insert, replace or delete a specified page in the generated PDF file.
The plug-in gives you a wide range of control options for the resulting image data in terms of compression. These include:
No compression, where the image is embedded inside the file without any compression.
Compressed using CCITT Group 3, 1 dimension. For 1-bit images.
Compressed using CCITT Group 3, 2 dimensions. For 1-bit images.
Compressed using CCITT Group 4. For 1-bit images.
JPEG compression and YUV 4:4:4 color space loss-less. Bits per pixel: 8 for grayscale, 24 for color.
JPEG compression and YUV 4:2:2 color space. Bits per pixel: 8 for grayscale, 24 for color.
JPEG compression and YUV 4:1:1 color space. Bits per pixel: 8 for grayscale, 24 for color.
JBIG2 compression. Bits per pixel: 1.
The plug-in also gives you control over the type of encoding to be used in order to change compressed image data into a text encoded format. The text encoding techniques include:
None.
Use ASCII 85 text encoding algorithm.
Use ASCII HEX text encoding technique.
Encryption/Decryption
RC4 40-bit key encryption.
RC4 128-bit key encryption.
Support for User password, Owner password permissions.
For background and full details, see:
http://www.leadtools.com/SDK/Raster/Raster-Addon-PDF.htm
LEADTOOLS PDF features are available in the following products:
LEADTOOLS Raster PDF Plug-in (Read)
LEADTOOLS Raster PDF Plug-in (Write)
LEADTOOLS PDF Plug-ins may be added to the following:
LEADTOOLS Imaging Pro
