Rather than using random web resources, I'd suggest using the official
documentation. The most relevant section is probably this:
https://tesseract-ocr.github.io/tessdoc/tess4/TrainingTesseract-4.00.html#fine-tuning-for--a-few-characters
I would suggest starting with script/Latin for your base mo
h 28, 2024 at 2:45:39 PM UTC aum hren wrote:
> olo company
>
> i am trying to ocr an old (1963) morocco arabic - english dictionary
>
> i have tried jTessBoxEditor for ocr, somehow managed to follow the info on
> net,
> but at the very end tesseract failed to make final _traind
olo company
i am trying to ocr an old (1963) morocco arabic - english dictionary
i have tried jTessBoxEditor for ocr, somehow managed to follow the info on
net,
but at the very end tesseract failed to make final _traindata_ files
my problem is
the book (dictionary) is basically in english
That is very interesting. I was expecting the dictionary to have some
significant impact on the output. I am getting no impact at all. Yes, my
images are pretty fine: regular scanned (300dpi) book, and i m on Tesseract
5. Sure, I will dig into this forum, and also with the experimentation
AFAIR there were tests with the legacy engine where the effect of improving
results quality by dictionaries where measured as 10-15% for common text.
However: adding a word to a dictionary has never ensured Tesseract's
accurate recognition of that word.
For non-word inputs (e.g. serial nu
Does Tesseract actually use the dictionary (wordlist) included into the
model (traineddata file)?
- I am not getting any difference/impact by including a dictionary (word
list) into the file.
Has anybody experimented with a dictionary set up?
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and passing it (and absolute path) to
> pytesseract functions doesn't work!!!
>
>
> El viernes, 11 de octubre de 2019, 10:32:12 (UTC+2), Sandra M. escribió:
>>
>> I'm trying to deactivate the tesseract dictionary, but I don't get it.
>> I'm
Hi.
1.
I've an image that's written in a "Science Fiction" style font, where 'E'
is written similarly to '='.
Therefore, the attached image is recognized as
"AR= YOU SURE YOU WANT TO QuIT >"
However, since Tesseract is using an English d
Hello,
Could you tell me please how can I use a custom dictionary composed of few
words ?
Thanks in advance.
Best regards,
Bambitous
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I'm trying to use a custom dictionary as follows:
text = pytesseract.image_to_string(img,config='--psm 12 bazaar')
"bazaar" is a .txt with:
load_system_dawg F
load_freq_dawg F
user_words_suffixuser-words
eng.user-words is the new dictionary I've cre
to extend the standard dictionary with my own words
to improve the accuracy the OCR.
Thanks in advance for your help!
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te the tesseract dictionary, but I don't get it. I'm
> using tesseract 5.0.0 and use the Python code below. I read about the
> parameters load_system_dawg and load_freq_dawg to change them in the
> config, but I don't know how to do this exactly. Can someone give me more
I'm trying to deactivate the tesseract dictionary, but I don't get it. I'm
using tesseract 5.0.0 and use the Python code below. I read about the
parameters load_system_dawg and load_freq_dawg to change them in the
config, but I don't know how to do this exactly. Can
I guess you don't do training with dictionary. You only use it when you
read image.
2019年8月3日土曜日 1時48分08秒 UTC+9 Mox Betex:
>
> I want to do fine tuning and I want to add my dictionary of words.
> How to do that, what file to create?
> Do I need to add dictionary for
I want to do fine tuning and I want to add my dictionary of words.
How to do that, what file to create?
Do I need to add dictionary for training or after?
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Can I turn off use of dictionary during OCR and how?
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To
Dear Tesseract OCR team
I am trying to use user dictionary for other language than English and
followed the instruction of Tesseract manual.
Although I tested it for *English *user word list my self and it worked
properly, the same procedures doesn't work for FAS language given word list
a
Hi
.i am trying to correct Tesseract result by its dictionary
.but I don't know how i can access and use the dictionary of the language I
used
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Hi,
So Im using terreract-ocr 4 for Arabic and I read the published research
papers, and I have a question about the dictionary used by the word
recognizer
I want to know what is the number of words in dictionary for Arabic
language?
I am aware that there are fast and best traindata files, I
For example let's say certain language would write "my book" as "mybook"
without spaces.
Then there is "hisbook, herbook, theirbook, ...". It doesn't make sense
to add all these words to the dictionary for each noun right?
Can I use asterisks or
Hi everyone!
I've read FAQ How Do I Provide My Own Dictionary
<https://github.com/tesseract-ocr/tesseract/wiki/FAQ#how-do-i-provide-my-own-dictionary>
but
it is not for 4.0.
All given picture will be in same font (but i don't know what it is),
contains 30 words(or less, up
nce on
> receipts, lots of text are not dictionary words. I disabled the
> dictionaries, it increased the recognition rate, but it’s still low, I’d
> like to create my own dictionary with the product catalog.
>
> Is there someone who can give the tutorial to do it ?
>
> Many th
hello Laura! could you please tell me how did you
disable the dictionaries?
Le mardi 20 juin 2017 08:35:25 UTC+2, Laura a écrit :
>
> Hi, I’m new on tesseract. I’m trying to recognize receipts. Since on
> receipts, lots of text are not dictionary words. I disabled the
> dicti
Laura wrote:
> Hi, I’m new on tesseract. I’m trying to recognize receipts. Since on
> receipts, lots of text are not dictionary words. I disabled the
> dictionaries, it increased the recognition rate, but it’s still low, I’d
> like to create my own dictionary with the product cata
Hi, I’m new on tesseract. I’m trying to recognize receipts. Since on
receipts, lots of text are not dictionary words. I disabled the
dictionaries, it increased the recognition rate, but it’s still low, I’d
like to create my own dictionary with the product catalog.
Is there someone who can
Hello All,
I want to add new words to dictionary to tesseract LSTM for arabic?
I will tell my steps and correct me if I am wrong:
go to langdata/ara/ara.wordlist directly
Is this right?
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Hi,
I am using Tesseract v3.02 Windows libraries to create a VC++ console app
(couldn't find Windows libraries for later version. If you do,
please kindly tell me).
I want to increase the strength of dictionary words, but setting
tesseract::TessBaseAPI api;
if (api.Init(&qu
Hi!!!
i want to use tesseract to read some words (about 300 words) in a preoject.
These words are combination between numbers and capital letters, but they
are specific words.
So i would like to know if i could use my own dictionary and not the
english or spanish one, to define the words i need
Hi,
I generated images using Sanskrit 2003 font using text2image default
configs.
I trained the tesseract using my own box files and compared results using
dictionary dawg and without using dictionary dawg.
Using dictionary dawg interestingly increase the word-level accuracy, but
in certain
hi
how to check tesseract static classifier otutput(not biased with
dictionary) or best 10 matches(again unbiased) for a blob with polygonal
approximations?
Thanks in advance
Rohit
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On Thursday, May 12, 2016 at 5:39:23 PM UTC-4, Christian Koch wrote:
>
>
> Are smaller texts a problem in general?
>
Yes.
https://github.com/tesseract-ocr/tesseract/wiki/FAQ#is-there-a-minimum-text-size-it-wont-read-screen-text
Tom
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Hi Rolf,
thank you for your response.
Is this the "right" way? I read that I should rather use proper settings in
tesseract than doing manual processing.
Are smaller texts a problem in general?
Am Freitag, 6. Mai 2016 06:41:06 UTC+2 schrieb Rolf Mertig:
>
> If you resize with convert from Image
If you resize with convert from ImageMagick (or any other tool):
convert ocr.jpg -resize 150% ocr2.jpg
then
tesseract ocr2.jpg ocr2 ; cat ocr2.txt
gives
ABC-DEF
Am Donnerstag, 5. Mai 2016 14:23:13 UTC+2 schrieb Christian Koch:
>
> I try to recoginze product codes written in images.
> The result
I try to recoginze product codes written in images.
The results in tesseract 3.04.00 are pretty bad. Even when I try a
primitive example (see attachment) it won't work.
Instead "ABC-DEF" I get "AECVDEF"
The example works *flawlessy* in gocr but guess I'm just using wrong
settings or something s
Hello,
Is there a location/dir/folder to place there my custom dictionary
with English words that seems not to be in tesseract-ocr data?
Or what is the procedure of adding such words
to tesseract?
Thank you.
Hypo
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Hi all,
I have a question on the process of tesseract when he use dictionary. I
have a user-words dictionary with one word : PROJECT. I have trained
tesseract to my own handwriting. So when i test the result, tesseract
chooses PRODECT. I use multiple param as penalty or other but no effect
ob overall, but fails to determine that
"reiiability" should be "reliability" (among few other words, but I'm
curious about this case in particular). Can you please explain to me why it
Tesseract fails to find the dictionary word?
Assuming I cannot fix this discrepa
Hello,
I tried following the approach from this post:
stackoverflow.com/questions/9568165/custom-dictionary-for-tesseract
However it doesn't seem to make any difference.
Please correct me if I am wrong but the way I understand it is as follows:
when following that approach, I basically
Thanks a ton!
On Monday, 2 February 2015 21:53:12 UTC+5:30, shree wrote:
>
>
> https://code.google.com/p/tesseract-ocr/source/browse/?repo=langdata#git%2Feng
>
> https://code.google.com/p/tesseract-ocr/source/browse?repo=tessdata#git
>
>
> http://tesseract-ocr.googlecode.com/svn-history/trunk/doc/
seract manually and also downloaded english
> training data and put it in the corresponding directory. But I am unable to
> locate several dictionary files like freq_dawg, and other similar files.
> Where are they located?
>
> Also, Which c++ files in the source code access these
Hello,
I have installed tesseract manually and also downloaded english
training data and put it in the corresponding directory. But I am unable to
locate several dictionary files like freq_dawg, and other similar files.
Where are they located?
Also, Which c++ files in the source
f black and white images...
>
> a.png
> b.png
> c.png
>
> etc...
>
> How do I teach tesseract those characters into new dictionary?
>
> Best regards,
> FlashT
>
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PS. I tried to see what jTessBoxEditor does, but output traineddata doesn't
seems to be correct... When I use it, application crashes with error:
tessdata_manager.SeekToStart(TESSDATA_INTTEMP):Error:Assert failed:in file
..\..\classify\adaptmatch.cpp, line 555
Generated files attached. It is ca
I got set of black and white images...
a.png
b.png
c.png
etc...
How do I teach tesseract those characters into new dictionary?
Best regards,
FlashT
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the main dictionary (Visual Basic).
> I know that i have to set the *init only* parameter load_system_dawg to 0.
>
>
> I know how to set *non init only* parameters like tessedit_char_whitelist.
>
> tess = New Tesseract()
> tess.Init("tessdata", &quo
Hi,
i want to disable the main dictionary (Visual Basic).
I know that i have to set the *init only* parameter load_system_dawg to 0.
I know how to set *non init only* parameters like tessedit_char_whitelist.
tess = New Tesseract()
tess.Init("tessdata&q
"tessedit_enable_dict_correction"
Anybody works with this parametr?
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Anybody know, why tesseract dictionary not work? How i can enable it?
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I use tesserat wrapper for C# (charlesw <https://github.com/charlesw>)! How
i can enable dictionary for better result?
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Hi All,
I am developing an App using tesseract to recognize some Chinese
characters,
But I find the results often include with some impossible word ,the
candidate character maybe true.
so I try to add my own dictionary into tesseract .I am using the version
of 3.01 .
Is it possible ? What
Goyal wrote:
> > If you're sure that all the words you will encounter will be in the
> > dictionary this should help somewhat:
> > https://code.google.com/p/tesseract-ocr/wiki/FAQ#How_to_
> > increase_the_trust_in/strength_of_the_dictionary?
>
On Fri, Jul 04, 2014 at 02:08:46AM -0700, Meenal Goyal wrote:
> If you're sure that all the words you will encounter will be in the
> dictionary this should help somewhat:
> https://code.google.com/p/tesseract-ocr/wiki/FAQ#How_to_
> increase_the_trust_in/strength_
I have already
> tried them.
> > I wanted to know if anything can be done to improve output at later
> stage,
> > something like adding the words to the dictionary used by tesseract.
>
> OK, I see. The reason I recommended binarisation is that I suspect
> you'll
output at later stage,
> something like adding the words to the dictionary used by tesseract.
OK, I see. The reason I recommended binarisation is that I suspect
you'll have a lot more luck with that than anything else, for your
problems.
> I have tried listing words in eng.user-wor
Hi Nick,
The post about "question about training tesseract" only suggests some
pre-processing steps which include binarisation and I have already tried
them. I wanted to know if anything can be done to improve output at later
stage, something like adding the words to the dictiona
That's a tough thing to preprocess. Take a look at this recent
thread on this list: "question about training tesseract".
Nick
On Tue, Jul 01, 2014 at 11:48:07PM -0700, Meenal Goyal wrote:
> Hi Nick,
>
> I have read that post earlier and also tried to preprocess the image. This is
> the input im
Hi Nick,
I have read that post earlier and also tried to preprocess the image. This
is the input image http://imgur.com/yCxOvQS,GD38rCa which after
preprocessing gives this http://imgur.com/JzrDkug . I wanted to know if
there is some way to improve in post-processing phase. Right now I am using
Hi Meena,
On Tue, Jul 01, 2014 at 02:04:36AM -0700, Meenal Goyal wrote:
> When I try to ocr an image, it also produces some noise apart from the
> meaningful words. An example output for an image is:
>
> All women become
>
> like their’ mqthers. _ ' 1"’ '
>
> - —T at-{rs their tragedy. ” "R"-‘
oyal wrote:
> > When i run tesseract on my image, it produces some words not present in
> the
> > dictionary. Is there some way to directly get the list of these words
> and
> > prevent tesseract from showing them in the output.
> > Example of such words are:
Hi Meenal,
On Mon, Jun 30, 2014 at 01:40:10AM -0700, Meenal Goyal wrote:
> When i run tesseract on my image, it produces some words not present in the
> dictionary. Is there some way to directly get the list of these words and
> prevent tesseract from showing them in the output.
>
Hi,
When i run tesseract on my image, it produces some words not present in the
dictionary. Is there some way to directly get the list of these words and
prevent tesseract from showing them in the output.
Example of such words are: fiJfifilnlflfiflhu-«fifllfllfilfi , neefls» , oscxmwxufis
etc.
--
You
dn't get the
> accurate
> results, So I added dictionary in my training data file. I created lang.
> word-dawg and lang.freq-word-dawg and combined them to training file.
> In testing with new trained data files I got similar results. I can see no
> change in recognition of t
Hello,
I trained tesseract for a new language. In my testing I didn't get the
accurate results, So I added dictionary in my training data file. I created
lang.word-dawg and lang.freq-word-dawg and combined them to training file.
In testing with new trained data files I got similar resul
Hello,
I have created my own dictionary and I'd like to increase the trust in it
to try to improve results (I didn't really notice any improvements with
parameters' default values). According to the FAQ: "For tesseract-ocr >=
3.01 try i
Hi,
I have same type of problem. Did you manage to get accurate results with
user-words and user-patterns files?
Basically i have some constant text on my documents. I want to detect these
constant text more accurately.
Thank you,
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See the documentation
at
http://tesseract-ocr.googlecode.com/svn-history/r725/trunk/doc/tesseract.1.html
. You'll want to do just like it does in the example - suppress the default
dictionary and supply your own. Check the tesseract FAQ for how to increase
the confidence in the dicti
No one got an answer?? :(
>
>
>
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Fo
won't work.
> >
> > Now if only I could get my hands on the Abbyy Fine Reader project file
> ... I'd
> > represent each phoneme by a unique character for a start and go from
> there.
> >
> > On Wednesday, January 16, 2013 3:20:04 PM UTC,
er project file ... I'd
> represent each phoneme by a unique character for a start and go from there.
>
> On Wednesday, January 16, 2013 3:20:04 PM UTC, sventech wrote:
>
> That particular dictionary has already been OCRed with Abbyy Fine Reader:
> http://archive.o
dnesday, January 16, 2013 3:20:04 PM UTC, sventech wrote:
>
> That particular dictionary has already been OCRed with Abbyy Fine Reader:
>
> http://archive.org/stream/everymansenglish00jone/everymansenglish00jone_djvu.txt
>
> Although not perfect, a little cleanup would render that text
That particular dictionary has already been OCRed with Abbyy Fine Reader:
http://archive.org/stream/everymansenglish00jone/everymansenglish00jone_djvu.txt
Although not perfect, a little cleanup would render that text quite usable.
--Sven
On Wed, Jan 16, 2013 at 8:44 AM, Sven Pedersen wrote
You would need to train tesseract to recognize those symbols. The web page
outlines how to do that.
--Sven
On Tue, Jan 15, 2013 at 6:43 PM, <50...@web.de> wrote:
> Is Tesseract-OCR capable of recognizing phonetic symbols? I would like to
> extract the phonetic transcriptions of the following (ou
Is Tesseract-OCR capable of recognizing phonetic symbols? I would like to
extract the phonetic transcriptions of the following (out of copyright)
document
http://archive.org/stream/everymansenglish00jone#page/2/mode/2up
Regards,
- Olumide
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lled word at :Bounding box=(2307,959)->(2345,972)
>>Found 28583 good blobs and 1026 unlabelled blobs in 0 words.
>>74 remaining unlabelled words deleted.
>> TRAINING ... Font name = arial
>> Generated training data for 5943 words
>>
>>
>> On Tue, Aug 23,
Hi I want to use tesseract-ocr to recognize nutrition-facts from food.
tesseract doesn't recognize the data I want very well. So I have the
question whether there is a possibility to force tesseract to pick a word
from a (custom) dictionary.
I want tesseract to only recognize a custom s
Regarding "user_patterns_suffix" have a look at tesseract manual page [1].
I am not sure if there is possibility to force tesseract choose ocr
output from dictionary (I never tried it ;-) )
But you can increase dictionary strength with variables
language_model_penalty_non_freq_dic
For your purposes a simple approach will yield the best results. The reason
it is recommended to repeat letters is because tesseract does not train or
read well with small samples due to its approximation/heuristic methods. As
tesseract processes the image it improves apon itself and then takes a
s
@ Andres
I am afraid i do not know the answer to your question, having only looked
into the internals of tesseract since last week. My followup email was
purely based on an afternoon of unscientific trial and error, but i am
interested enough to do further research and will post anything useful
Hi Adam,
Thanks for writing with so much detail. Was interesting to read.
On Fri, Oct 19, 2012 at 02:22:44AM -0700, Adam Chapam wrote:
> I can follow the training wiki and produce working traineddata files, and have
> written a .net app to automate creating tif/box pairs from a font file, (i
> k
I thought that "abcdefghijklmn..." was not a good idea because of the
segmentation problem (e.g.: r followed by n interpreted as m ( rn -> m )).
So, as in my project I do the character segmentation by myself, I always
was using "abcdefghijklmn..." for training. It would be very interesting to
know
Just a quick follow up.
I have spent the day running tests. I tried using the above linked data,
pages from books, and simple (not recommended) ADBDEFG etc, but found i get
the best results randomly generating strings with a simple algorithm that
outputs characters in strings ranging from 1 to
-processing i do. I read up on unicharambigs but as either letters
may be present, and there will be no dictionary words for it to take a hint
from, then that option seems unavailable to me.
I tried segmenting myself and processing one char at a time, but it still
confused the same chars
The other thing
Aidano
Did you manage to solve this problem? We have the exact same question?
Would really be interested in any solutions
thanks
On Thursday, March 22, 2012 8:37:44 AM UTC+8, aidano wrote:
>
> I'd like to configure tesseract with a small dictionary (~200 words) and
> tell it to
Dňa 23.08.2012 13:08, Nick White wrote / napísal(a):
> A great addition to training would be if one dictionary file was
> used, combining freq-words and all-words, and a relative frequency
> probability score was given to each word. This would allow more
> fine-grained scoring based on
; A great addition to training would be if one dictionary file was
> used, combining freq-words and all-words, and a relative frequency
> probability score was given to each word. This would allow more
> fine-grained scoring based on exactly how likely the word is to
> appear, which
A great addition to training would be if one dictionary file was
used, combining freq-words and all-words, and a relative frequency
probability score was given to each word. This would allow more
fine-grained scoring based on exactly how likely the word is to
appear, which would be a win
On Tue, Jul 10, 2012 at 02:11:11AM -0700, Umair Anjum wrote:
> Actually I am using tesseract for urdu language and urdu does not require
> dictionary files so I want to exclude all the dictionary related Functions
> which are not being used but they are called each time and increases th
Hello
Actually I am using tesseract for urdu language and urdu does not require
dictionary files so I want to exclude all the dictionary related Functions
which are not being used but they are called each time and increases the
time of execution
Thats why I want to exclude all Dictionary
On Mon, Jul 09, 2012 at 02:26:37AM -0700, Umair Anjum wrote:
> Actually I want to close all function calling of dictionary classes
> Because I want to improve systems recognition time
Yes, that is what Zdenko's advice will do.
If you want more fine-grained control over which functions
Hello
Actually I want to close all function calling of dictionary classes
Because I want to improve systems recognition time
Thanks in Advance
On Saturday, 7 July 2012 14:42:37 UTC+5, zdpo wrote:
>
> try to set these variables (found in 3.02) to false:
> load_system_dawg
> lo
dictionaries than in 3.01. See
http://www.sk-spell.sk.cx/first-notes-for-tesseract-ocr-302-traning
--
Zdenko
On Sat, Jul 7, 2012 at 10:15 AM, Umair Anjum wrote:
> Hello
>
> I am using tesseract 3.01 and I want to disable the dictionary
> Is there anyway to do it?
>
> Thanks in Advance
>
Hello
I am using tesseract 3.01 and I want to disable the dictionary
Is there anyway to do it?
Thanks in Advance
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nd an older version of the language), it would be useful to only
> > use one set of dictionary files (rather than presumably the union of
> > grc & ell, in the above example).
> >
> > I wonder if there's any good way of integrating this functionality
> > in to tess
nd an older version of the language), it would be useful to only
> > use one set of dictionary files (rather than presumably the union of
> > grc & ell, in the above example).
>
> The main difficult thing for you will be any characters that are not
> already trained. There&#
output -l grc+ell
>
> Ah, that's a very good idea, and will indeed be useful. However for
> my usecase (a script which is mostly the same, but with additions,
> and an older version of the language), it would be useful to only
> use one set of dictionary files (rather than presumably th
tesseract image output -l grc+ell
>
> Ah, that's a very good idea, and will indeed be useful. However for
> my usecase (a script which is mostly the same, but with additions,
> and an older version of the language), it would be useful to only
> use one set of dictionary files (r
indeed be useful. However for
my usecase (a script which is mostly the same, but with additions,
and an older version of the language), it would be useful to only
use one set of dictionary files (rather than presumably the union of
grc & ell, in the above example).
I wonder if there's any go
I'd like to configure tesseract with a small dictionary (~200 words) and
tell it to always choose the best match in the dictionary. Is that possible?
Also, when inspecting the source code I saw a variable in dict.h called
"user_patterns_suffix". Is there any documentation around
How do I decrease the strength of the dictionary in tesseract 3 ?
In the FAQ it says I need to change the value of "NON_WERD" and
"GARBAGE_STRING" but they do not exist in Tesseract 3.
So, how is it done in Tesseract 3 ?
Thanks in advance
--
You received this mes
This question is asked in the FAQ, but the answer seems to be out of
date
"Try upping NON_WERD and GARBAGE_STRING in dict/permute.cpp to maybe 3
or even 5 you could also try lowering ClassPrunerThreshold in
classify/intmatcher.cpp to about 200 from 229."
As best I can tell, none of these vari
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