Check Tesseract data files for version compatibility about tesseract-android-tools

[GoogleCodeExporter]

I was having the same issue and then I decided to try fiddling with the 
language files. I remembered that the iOS project pocketOCR had an english 
traineddata file that supposedly worked. I switched that one with the one I was 
using (it's about 2/3 the size of the one I was using) and it initialized fine.

Though I'm not sure what the difference is, I'm also not exactly sure how to 
obtain these language files. The one I had originally used was from a 
failed/partial compile for the iOS library (which I can't seem to successfully 
compile :[ )

Attached is the file it worked with and the one that it did not work with. 
Smaller of the two is the valid one.

Original comment by [email protected] on 13 Apr 2011 at 7:54

Attachments:

• eng.traineddata
• eng.traineddata

[GoogleCodeExporter]

hmm, i also have the sigsev signal.

i tried both of your traineddata file lawrence, but i always have the signal.

anyone have a solution ?

Thanks

Original comment by [email protected] on 18 May 2011 at 3:47

[GoogleCodeExporter]

hmm, No one have a solution ?

maybe could we try to catch the sigsev signal to avoid program crash

Original comment by [email protected] on 24 May 2011 at 10:33

[GoogleCodeExporter]

This is not a bug!

Open tessdatamanager.h and check the value of TESSDATA_NUM_ENTRIES.

Now check the first 4 bytes of the data file. If the 4 byte integer value is 
same as TESSDATA_NUM_ENTRIES, then it's good file. Otherwise there will be a 
size mismatch and you will get a crash!

tesseract-android-tools has TESSDATA_NUM_ENTRIES = 10. So, the first 4 bytes 
should be 0A 00 00 00.

In recent versions of tesseract, TESSDATA_NUM_ENTRIES = 13. So, the recent data 
files have the first 4 bytes as 0D 00 00 00

Again, this is not a bug. You need to use the right data file for your version 
of tesseract!

Original comment by [email protected] on 6 Oct 2011 at 9:07

[GoogleCodeExporter]

i am use  second 3.0MB file and application is not crash but .... output is not 
good compare with 1.8MB traineddata file....

Original comment by [email protected] on 14 Aug 2012 at 10:35

[GoogleCodeExporter]

Original comment by [email protected] on 11 Sep 2012 at 8:14

• Changed title: Check Tesseract data files for version compatibility
• Added labels: Priority-Low, Type-Enhancement
• Removed labels: Priority-Medium, Type-Defect

[GoogleCodeExporter]

Issue 7 has been merged into this issue.

Original comment by [email protected] on 14 Sep 2012 at 6:39

[GoogleCodeExporter]

Issue 12 has been merged into this issue.

Original comment by [email protected] on 14 Sep 2012 at 6:39

[GoogleCodeExporter]

Issue 21 has been merged into this issue.

Original comment by [email protected] on 14 Sep 2012 at 6:39

[GoogleCodeExporter]

thanks lawrence, i changed eng.traineddata  and it worked

Original comment by [email protected] on 28 May 2013 at 9:18