| 1 | -------------------------------------------------
|
|---|
| 2 | COMPILING TESSERACT GS2-EXTENSION
|
|---|
| 3 | & CREATING THE CUT-DOWN BINARY-ONLY TARBALL
|
|---|
| 4 | -------------------------------------------------
|
|---|
| 5 |
|
|---|
| 6 | To compile the Tesseract gs2-extension and then create the "binary" tarball needed to run
|
|---|
| 7 | Tesseract, we follow an equivalent version of the instructions for the imagemagick gs2-extension
|
|---|
| 8 | at http://trac.greenstone.org/browser/gs2-extensions/imagemagick/trunk/README
|
|---|
| 9 |
|
|---|
| 10 | 1. Find a location on your machine
|
|---|
| 11 |
|
|---|
| 12 | 2. Check out the tesseract extension from gs2-extensions
|
|---|
| 13 | svn co http://trac.greenstone.org/browser/gs2-extensions/tesseract/trunk tesseract
|
|---|
| 14 |
|
|---|
| 15 | 3. Compile it all up (tesseract and dependencies):
|
|---|
| 16 | cd tesseract
|
|---|
| 17 | ./CASCADE-MAKE.sh
|
|---|
| 18 |
|
|---|
| 19 | 4. Open a fresh terminal and check that the tesseract now installed in src/linux/bin works:
|
|---|
| 20 |
|
|---|
| 21 | cd src
|
|---|
| 22 | source ./setup.bash
|
|---|
| 23 |
|
|---|
| 24 | This should have set up env vars like GEXTTESS, GEXTTESS_INSTALLED, and TESSDATA_PREFIX
|
|---|
| 25 | which Tesseract needs to have set
|
|---|
| 26 |
|
|---|
| 27 | tesseract --list-langs
|
|---|
| 28 | tesseract sample.tif out
|
|---|
| 29 |
|
|---|
| 30 | OCRs sample.tif and generates out.txt from it.
|
|---|
| 31 |
|
|---|
| 32 | cat out.txt
|
|---|
| 33 |
|
|---|
| 34 | 5. If successful, create a folder at the same level as src alled tesseract
|
|---|
| 35 | cd src
|
|---|
| 36 | cd ..
|
|---|
| 37 | mkdir tesseract
|
|---|
| 38 |
|
|---|
| 39 | COPY the setup files and MOVE the installed folder (src/linux) into the new cut-down tesseract folder:
|
|---|
| 40 |
|
|---|
| 41 | cp src/setup.ba* tesseract/.
|
|---|
| 42 | mv src/linux tesseract/.
|
|---|
| 43 |
|
|---|
| 44 | COPY the TESSERACT-APACHE-LICENSE and LEPTONICA-LICENSE txt files (note it uses
|
|---|
| 45 | Amercan spelling!) from src/packages into the cut-down tesseract/linux:
|
|---|
| 46 |
|
|---|
| 47 | cp src/packages/*LICENSE.txt tesseract/linux/.
|
|---|
| 48 |
|
|---|
| 49 |
|
|---|
| 50 | 6. Create a tarball of the cut down tesseract folder named tesseract-<os>-<arch>.tar.gz:
|
|---|
| 51 | tar -cvzf tesseract-linux-x64.tar.gz tesseract
|
|---|
| 52 |
|
|---|
| 53 | 7. (Add/SVN up and) commit that to svn:
|
|---|
| 54 | svn up
|
|---|
| 55 | svn add tesseract-linux-x64.tar.gz
|
|---|
| 56 | (or svn diff tesseract-linux-x64.tar.gz if there was an earlier version to confirm modified)
|
|---|
| 57 | svn commit -m "MESSAGE" tesseract-linux-x64.tar.gz
|
|---|
| 58 |
|
|---|
| 59 |
|
|---|
| 60 | -------------------------------------------------
|
|---|
