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| Author | Topic: Batch conversion from multi-page tiff to djvu |
| Christian Boulanger |
posted 11/15/03 2:05 AM
(I first posted this to the archive, please remove there) Hi everybody, I was searching the web left and right to find a shell script for batch conversion of multi-page tiffs to multi-page djvu. After not finding anything I wrote my first (!) bash script and post it here for improvement by the More Able. This one runs REALLY slow (But works). #!/bin/sh # # convert all multi-page tiffs in a directory to a multi-page dvju # # Author: c period boulanger at gmx period de, Nov 15, 2003, late at night # # requires: # - netbpm installed (tifftopnm suffices) # - dvju-libre installed # - tiffsplit # tiffsplit, tifftopnm, cjb2, djvm in the PATH # # Please improve!! mkdir tmp for i in *.tif; do echo "Now converting $i... " cp $i tmp/$i cd tmp tiffsplit $i rm $i for j in *.tif; do tifftopnm $j > $j.pnm cjb2 -dpi 150 -clean -loose $j.pnm $j.djvu rm $j rm $j.pnm done djvm -c temp.djvu *.djvu cd .. mv tmp/temp.djvu $i.djvu rm tmp/*.* done rmdir tmp What I would really love to see is a PHP extension for djvu. Has anyone ever started such a project? Cheers, Christian http://www.panyasan.de |
| Christian Boulanger |
posted 11/15/03 11:16 AM
... it takes several minutes to convert a 20-page, 300dpi scanned tiff-file. For larger tasks, this is obviously quite tedious. As I understand, the only way to avoid that is to buy the commercial Lizardtech stuff. Isn't there any binary that would do the direct tiff-djvu conversion? Cheers, Christian |
| James Rile |
posted 11/15/03 5:09 PM
DjVu Solo 3.1 (link on PlanetDjVu home page) can do it. http://www.planetdjvu.com The Global Forum for DjVu |
| Christian Boulanger |
posted 11/15/03 5:26 PM
James, thanks for your reply. Can it do *batch* conversion, I mean, can I use it as a command line tool, or have it convert a whole directory of .tifs automatically? Christian |
| James Rile |
posted 11/15/03 5:34 PM
Hi Christian, No, not as a batch tool or as a command line tool. Just one at a time conversion. The same for the on-line Any2djVu conversion server. But both are free. Look in the coming days here for a posting of new lower prices for LizardTech DjVu encoders, and a DjVu encoding product from me, called JRAPublish. Jim http://www.planetdjvu.com The Global Forum for DjVu |
| Christian Boulanger |
posted 11/15/03 9:18 PM
James, I'll be looking. For the time being, here is a slightly improved script to do the trick. For those with lots of time and little money. Best, Christian #!/bin/sh # tiff2dvju.sh # # converts all multi-page tiff-files in a directory to multi-page dvju-files # # Author: c dot boulanger at gmx dot de # # requires: # - tiffsplit (libtif pkg), # - tifftopnm (netpbm or tetex pkg), # - cjb2, djvm (djvu-libre pkg) # - all binaries must be in directories in the PATH # - write priviledges for the script # Improvements welcome! # This is my first shell script, this is fun! echo "This will convert all .tif documents in this folder to .djvu-Files" echo "Type 'y' if you want to delete the source files afterwards." echo -n ">" read a mkdir tmp for i in *.tif; do echo -n "Now converting $i. Please wait. Pages left: " cp $i tmp/$i # make a copy of source file in temp file cd tmp tiffsplit $i 2>null # split tif into individual pages and suppress stderr rm $i # delete multipage file n=`ls | wc -l` # number of files p=0 # reset counter for j in *.tif; do p=`expr $p + 1` # increment counter l=`expr $n - $p` # number of pages left if [ $l -lt 10 ]; then l=" $l"; fi # add leading space echo -e "$l\b\b\\c" # output to be overwritten tifftopnm $j > $j.pnm 2> null # convert tif to pnm format, suppress stderr cjb2 -dpi 150 -clean -loose $j.pnm $j.djvu # convert pnm to djvu rm $j; rm $j.pnm # delete tif and pnm done djvm -c temp.djvu *.djvu # merge djvu files cd .. n=`echo $i | sed 's/\(.*\.\)tif/\1djvu/'` # replace .tif extension with .djvu extension mv tmp/temp.djvu $n # retrieve merged file rm tmp/*.* # delete all temp files echo # output result echo -n " Source file: `ls -sh $i`" # show size of source file if [ $a ]; # delete source file if requested then rm $i; echo " ...deleted." else echo fi echo " Dest. file: `ls -sh $n`" # show size of target file done rmdir tmp |
| James Rile |
posted 11/15/03 11:52 PM
That's Great Christian, We have these compiled DjVuLibre and other open-source compiled binaries for Windows, but they are not very useful without a batch script like this. Why don't you zip it all up and we can offer a download link here at PlanetDjVu? Just email me the zipped or rarred file, or host it yourself and send me the URL. - Jim P.S. The next step (after this script is polished) will be for someone to create a VB application that uses these binaries (generates .bat files). http://www.planetdjvu.com The Global Forum for DjVu |
| Christian Boulanger |
posted 11/17/03 8:53 AM
Hi James, glad you find the script useful. I am more than happy to provide it for use and improvement by the dvju community. I am running it on Windows with Cygwin. What files would you like me to zip up - the individual binaries used by the script? Do they function by themselves, without the package they come with, and without cygwin running? I have just started learning linux shell script programming, I don't know anything about Windows shell scripts. I am sure someone could quickly translate, or even write a VB application - would they be able to use the cygwin binaries? I have not much experience with those porting issues. Christian |
| Christian |
posted 11/21/03 11:46 PM
Last post on this topic: I have put the script here: http://www.panya.de/snippets/tiff2djvu.htm and will update it if someone improves it. It works well now if you can put up with letting your computer run for hours and days. Best, Christian |
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