pdfimages.cat

这是一个做pdf阅读器的源代码文件,是大家学习阅读器资料的很好参考

pdfimages(1)                                         pdfimages(1)



NAME
       pdfimages - Portable Document Format (PDF) image extractor
       (version 3.02)

SYNOPSIS
       pdfimages [options] PDF-file image-root

DESCRIPTION
       Pdfimages saves images from  a  Portable  Document  Format
       (PDF)  file  as  Portable  Pixmap  (PPM),  Portable Bitmap
       (PBM), or JPEG files.

       Pdfimages reads the PDF file, scans  one  or  more  pages,
       PDF-file,  and  writes one PPM, PBM, or JPEG file for each
       image, image-root-nnn.xxx, where nnn is the  image  number
       and xxx is the image type (.ppm, .pbm, .jpg).

       NB:  pdfimages  extracts  the  raw image data from the PDF
       file, without performing any additional  transforms.   Any
       rotation,  clipping, color inversion, etc. done by the PDF
       content stream is ignored.

CONFIGURATION FILE
       Pdfimages reads a configuration file at startup.  It first
       tries  to  find the user's private config file, ~/.xpdfrc.
       If that doesn't exist, it looks for a  system-wide  config
       file,  typically  /usr/local/etc/xpdfrc (but this location
       can  be  changed  when  pdfimages  is  built).   See   the
       xpdfrc(5) man page for details.

OPTIONS
       Many  of  the following options can be set with configura-
       tion file commands.  These are listed in  square  brackets
       with  the  description  of  the corresponding command line
       option.

       -f number
              Specifies the first page to scan.

       -l number
              Specifies the last page to scan.

       -j     Normally,  all  images  are  written  as  PBM  (for
              monochrome   images)  or  PPM  (for  non-monochrome
              images) files.  With this  option,  images  in  DCT
              format are saved as JPEG files.  All non-DCT images
              are saved in PBM/PPM format as usual.

       -opw password
              Specify the owner password for the PDF file.   Pro-
              viding  this will bypass all security restrictions.

       -upw password
              Specify the user password for the PDF file.

       -q     Don't print any messages or errors.  [config  file:
              errQuiet]

       -v     Print copyright and version information.

       -h     Print  usage  information.   (-help  and --help are
              equivalent.)

EXIT CODES
       The Xpdf tools use the following exit codes:

       0      No error.

       1      Error opening a PDF file.

       2      Error opening an output file.

       3      Error related to PDF permissions.

       99     Other error.

AUTHOR
       The pdfimages software  and  documentation  are  copyright
       1998-2007 Glyph & Cog, LLC.

SEE ALSO
       xpdf(1),   pdftops(1),   pdftotext(1),   pdfinfo(1),  pdf-
       fonts(1), pdftoppm(1), xpdfrc(5)
       http://www.foolabs.com/xpdf/



                         27 February 2007            pdfimages(1)