1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
#!/bin/bash
# pdf2png-binary
#
# Rasterizes a PDF file, saving as a set of binary png images
#
# input: PDF
# root name of output files
# output: 1 bpp png files for each page
#
# Note 1: Requires ghostscript
#
# Note 2: A modern alternative to ghostcript is to use poplar:
# If the pdf is composed of images that were orthographically generated:
# pdftoppm -png <pdf-file> <pdf-root> [output in png]
# If the pdf is composed of images that were scanned:
# pdftoppm -jpeg <pdf-file> <pdf-root> [output in jpeg]
scriptname=${0##*/}
if test $# != 2
then
echo "usage: " $scriptname " inpdffile outpngroot"
exit -1
fi
inpdffile=$1
outpngroot=$2
# need mysterious "primer"
# choose one of the two options below
# output image size depending on resolution
echo "0 neg 0 neg" translate | gs -sDEVICE=pngmono -sOutputFile=${outpngroot}%03d.png -r300x300 -q - ${inpdffile}
# output fixed image size
#echo "0 neg 0 neg" translate | gs -sDEVICE=pngmono -sOutputFile=${outpngroot}%03d.png -g2550x3300 -r300x300 -q - ${inpdffile}
|
