Issue 1208 in tesseract-ocr: tesseract - cannot open input file

[tesser...@googlecode.com]

Status: New
Owner: ----

New issue 1208 by claeshj...@gmail.com: tesseract - cannot open input file
http://code.google.com/p/tesseract-ocr/issues/detail?id=1208

What steps will reproduce the problem?
1.converting pdf to tif with imagemagick, command: convert -density 300
-depth 4 "eng.Belwe Bd BT.exp0.pdf" "eng.Belwe Bd BT.exp0.tiff"
2.trying to makebox with the command: tesseract "eng.Belwe Bd
BT.exp0.tif" "eng.Belwe Bd BT.exp0" batch.nochop makebox
3. causes error: Cannot open input file: eng.Belwe Bd BT.exp0.tif

running version V3.02 on windows 8

I'm new to this and I'm fairly doing something obvious wrong, but to point
out what I did check: spelling, many times, the file name is spelled
correctly, and the file is placed in my "C:\Program Files
(x86)\Tesseract-OCR" directory, also from where I'm running the command.

I was following a guide step by step and got stuck here. I was wondering
about the 'tiff' with 2 ff's in the convert, but only 1 f in the tesseract.
But if I do try with 2 ff's in the tesseract command, I just
get "Unsupported image type" error. And some Image type error I get if I
change it to 1 f in the convert command.

am I putting my .tif file in the wrong place?
Hope someone can help, an annoying place to be stuck :)

Regards


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[tesser...@googlecode.com]

Comment #1 on issue 1208 by claeshj...@gmail.com: tesseract - cannot open
input file
http://code.google.com/p/tesseract-ocr/issues/detail?id=1208

Have something to add: I tried the same command with a test file (this time
a .jpg) which worked fine being in the same directory as the .tif. So I'm
thinking maybe there is a problem with the handling of .tif files? Or maybe
a problem in the conversion to .tif using imagemagick(even though it gave
me no errors).

[tesser...@googlecode.com]

Updates:
Status: WorksForMe

Comment #2 on issue 1208 by zde...@gmail.com: tesseract - cannot open input
file
http://code.google.com/p/tesseract-ocr/issues/detail?id=1208

Error message is "Cannot open input file" is coming for your OS - is has
nothing to do with tesseract or image format. E.g. Windows 8 was not able
to open file for reading... You are the only one who find why.

tiff and tif are equivalents (as jpg and jpeg).

leptonica (library that is used for image opening) is able to work with
most of tif format, but it would report other error message than "Cannot
open input file" if there is problem with image format.

IMO using spaces in filename is very bad habit especially if the filename
is used in console.

[tesser...@googlecode.com]

Comment #3 on issue 1208 by zde...@gmail.com: tesseract - cannot open input
file
http://code.google.com/p/tesseract-ocr/issues/detail?id=1208

Issue 1221 has been merged into this issue.

[tesser...@googlecode.com]

Comment #4 on issue 1208 by dimitri....@gmail.com: tesseract - cannot open
input file
https://code.google.com/p/tesseract-ocr/issues/detail?id=1208

We have run into the same problem.
It seems the issue has something to do with imagemagick. For some reason
the generated tiff cannot be read by tesseract.

I tried opening the image in a viewer (irfanview), which works fine. I then
saved the image again using irfanview, with the default options. This
resulted in a tiff half the size, which could be read by tesseract.

So I'm guessing there is something exoctic in the way imagemagick save's a
tiff. Maybe this can be solved by changing imagemagick settings, but i'm
not sure exactly how.