Create searchable pdfs

[Harald Heigl]

I want to create a searchable pdf on my Fedora machine, I've installed ocropus 0.7 from source. It works so far I can see (run_test sucessful).
I've found some very old threats about converting to searchable pdfs, like this one: https://groups.google.com/forum/?fromgroups=#!searchin/ocropus/searchable/ocropus/sBobkt8z_4w/zueGRpQoj68J

Can anyone explain (with commands line per line), how to get a scanned jpg to a searchable pdf?

Thanks in advance!
Harald

[Harald Heigl]

Okay I think I'm coming closer, since ocropus-recognize-book doesn't exist any more, I'm using something a modified "run-test"-script:

ocropus-nlbin "$1" -o temp
ocropus-sauvola "$1" -o temp
ocropus-gpageseg 'temp/????.bin.png'
ocropus-rpred 'temp/????/??????.bin.png'
ocropus-hocr 'temp/????.bin.png' -o temp.html
ocropus-visualize-results temp
ocropus-gtedit html temp/????/??????.bin.png -o temp-correction.html

But there it exits at ocropus-rpred with:

Traceback (most recent call last):
  File "/usr/bin/ocropus-rpred", line 84, in <module>
    network = ocrolib.load_object(args.model,verbose=1)
  File "/usr/lib/python2.7/site-packages/ocrolib/common.py", line 428, in load_object
    fname = ocropus_find_file(fname)
  File "/usr/lib/python2.7/site-packages/ocrolib/common.py", line 673, in ocropus_find_file
    raise OcropusFileNotFound(fname)
ocrolib.common.OcropusFileNotFound: <OcropusFileNotFound uw3unlv.pyrnn.gz>

What am I missing?

[Tom]

It looks like you haven't downloaded and installed the model files. Did you follow the instructions in the README?

Tom

[Harald Heigl]

Oh, I did download the model files!
But that was a good point, I started searching arround ...

The install-script seems to install the models into /usr/share/ocropus, but in /usr/lib/python2.7/site-packages/ocrolib/common.py (line 647) you can read:
data_paths = [
    ".",
    "./models",
    "./data",
    "./gui",
    "/usr/local/share/ocropus/models",
    "/usr/local/share/ocropus/data",
    "/usr/local/share/ocropus/gui",
    "/usr/local/share/ocropus",
]

If I change /usr/local/share to /usr/share it works so far and models are found.

Bug or feature?


But so far it seems to work, at least I can start playing around ...

[Tom]

The install script just uses the Python distutils target directory. Looks like Fedora makes a different choice there than Ubuntu.

Your best short term solution is to make a symbolic link.

I'll add the path to the OCRopus search path.

Tom

[cf...@web.de]

Hello Tom,

how can i create a pdf after calling this:

ocropus-gtedit html temp/????/??????.bin.png -o temp-correction.html

Regards Claus