Loads PDF 1.2, 1.3, 1.4, and 1.5 files.PDF and Advanced PDF
The LEADTOOLS PDF Plug-in is an add-on module for all LEADTOOLS Toolkits. It extends support to include the PDF, Postscript, and EPS formats. The LEADTOOLS PDF SDK Plug-in supports loading, saving, viewing, rasterizing, and encoding these three formats. It integrates seamlessly with the broad imaging functionality present in the existing LEADTOOLS toolkits, encompassing specialized display, color-conversion, image-processing, scanning, annotations, document clean-up, and much more.
The LEADTOOLS PDF plug-in has the following import capabilities:
Loads PDF 1.2, 1.3, 1.4, and 1.5 files.
Loads PostScript Language Level 3 files.
Loads EPS files.
Support is provided for loading the entire document
or a specified set of sequential pages.
The plug-in provides a number of options for controlling the rasterization of the page, including:
Pixel depth - Valid values are 1,4,8 and 24.
Horizontal resolution in dots per inch.
Vertical resolution in dots per inch.
Ability to 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.
Full multi-page write support is provided by this module for the PDF format. 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 resulting image data compression, including:
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.
JBIG-2 compression 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.
LZW compression for bits-per-pixel: 1, 2, 4, 8, 24.
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:
No text encoding at all.
Use ASCII 85 text encoding algorithm.
Use ASCII HEX text encoding technique.
The PDF Compressor supports saving files through Mixed Raster Content (MRC) technology. Most PDF files are saved as a single-page 24-bit (color) or 1-bit (black-and-white) raster image. Using the LEADTOOLS PDF Compressor with MRC engine, this compressor can be used to break down a page/image into smaller segments, saving each segment using compression appropriate for that segment. Thus, one page of a PDF file may have an image segment that is compressed using JPEG compression, some text in another segment that is compressed using JBIG2 compression, and another area that is compressed using CCITT compression. This whole process works to provide a PDF file with the highest-possible compression and best-possible quality, as compared to a standard Raster PDF file.
Advanced PDF Compression includes the following features:
Supports many compression types, including:
ZIP (Flat compression)
LZW
FAX CCITT (G3 1D, G3 2D, G4)
JBIG2
Lossless JPEG
JPEG (YUV 4.4.4, YUV 4.2.2 and YUV 4.1.1)
Works in two modes at the page level:
MRC mode: enables the segmentation of the source image
and then compresses the resulting segments
Normal mode: inserts the image into the PDF file without
segmentation
Produces v1.4 (Adobe Acrobat 5.X) PDF files
Provides advanced options to control the process of
adding the segments to the PDF file
Provides input profiles to specify source image quality.
This makes controlling the segmentation process more accurate and simple.
The following input profiles are supported:
Automatic: the PDF compressor automatically handles
the process
Noisy
Scanned
Printed
Computer-generated
Photo
User: this profile is provided for advanced users
Provides output profiles to specify the required output
quality. This should also make the segmentation process easier and more
accurate. The following output profiles are supported:
Automatic: the PDF compressor automatically handles
the process
Poor
Average
Good
Excellent
User: this profile is provided for advanced users
Provides control over the compression types that will
be used with each type of segment. For example, FAX CCITT G4 compression
to handle 1 bit/pixel segments.
Supports background detection, where the PDF compressor
tries to determine the background of the provided image. With background
detection, the background segments are not stored, resulting in a more
compact PDF file.
Provides control over 1-bit and 2-bit segment detection.
Detection can be set to favor 1 bit segments over 2 bit segments, and
vice versa. Or, detection can be forced to 1 bit segments over 1 bit segments
and vice versa.
Supported Platforms