A few months ago I was having trouble with getting osd working in
3.0.1. And I wanted to post that this is now fixed and easy to
setup. I did the following.
svn checkout trunk which is currently rev626
./runautoconf
./configure
comment out the line
libtesseract_la_OBJECTS = libtesseract.lo
in the Makefile, on mine it was line 87. If you don't do this you can
not build tesseract at least on my machine. I also made the following
change in osdetect so I can tell when an image was read upside down or
rightside up and make changes to my documents that I will display to
the user in my system.
Index: ccmain/osdetect.cpp
===================================================================
--- ccmain/osdetect.cpp (revision 626)
+++ ccmain/osdetect.cpp (working copy)
@@ -269,6 +269,7 @@
// Make sure the best_result is up-to-date
int orientation = o.get_orientation();
+ printf("orientation %d\n", orientation);
osr->update_best_script(orientation);
return num_blobs_evaluated;
}
so once you have the changes done
make ; make install
cp ${WHERE_YOU_INSTALLED}/tessdata/eng.traineddata $
{WHERE_YOU_INSTALLED}/tessdata/osd.traineddata
finally you can run this command
tesseract /tmp/test2.tif /tmp/outputfile -psm 1
which will give you output like this
Tesseract Open Source OCR Engine v3.01 with Leptonica
Page 0
orientation 2
2 if the page is upside down 0 if its right side up.
I hope this helps people use this great project.
Matt
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