Re: [tesseract-ocr] Tesseract 4 for old languages
Please also see http://doc-creator.labri.fr/
which makes it easy to create synthetic data similar to manuscript pages.
On Tue, Jun 12, 2018 at 9:03 PM ShreeDevi Kumar
wrote:
> Please see the project https://github.com/OCR-D/ocrd-train
>
> It has support for training tesseract if you provide line images and
> matching ground truth text.
>
>
> On Tue, Jun 12, 2018 at 8:19 PM wrote:
>
>> Same question here. I see that the documentation on training Tesseract 4
>> makes some reference to manuscripts:
>>
>> As with base Tesseract, there is a choice between rendering synthetic
>> training data from fonts, or labeling some pre-existing images (like
>> ancient manuscripts for example).
>>
>> So, if I understand correctly, there is no support yet for training with
>> labelled pre-existing images ? The concept of font does not makes sense
>> with manuscripts, and what we can use in this case is just pairs of images
>> and text (transcription).
>>
>> Best,
>> Jean-Baptiste Camps
>>
>> Le lundi 12 mars 2018 10:59:41 UTC+1, shree a écrit :
>>>
>>> >I have an image and a text file with the line content for each line of
>>> manuscript text. The doc says what to do, but not how.
>>>
>>> >I first thought I'd need img/box files pairs, but it seems it was for
>>> Tesseract 3 and is now irrelevant...
>>>
>>> Tesseract4.0.0beta.1 does not officially support LSTM training from
>>> box/tif pairs.
>>>
>>> It uses box/tif pairs generated using the synthetic training data
>>> generation pipeline using a training_text and set of fonts, for making the
>>> lstmf files that are used by lstmtraining.
>>>
>>> langdata refers to the langdata repository under tesseract-ocr github
>>> repo. The files in it have not been updated for 4.0.0
>>>
>>>
>>>
>>>
>>> ShreeDevi
>>>
>>> भजन - कीर्तन - आरती @ http://bhajans.ramparivar.com
>>>
>>> On Mon, Mar 12, 2018 at 2:00 PM, ShreeDevi Kumar
>>> wrote:
>>>
Please try tesseract 4.0.0beta.1 with languages such as
*enm* (English, Middle (1100-1500))
and
Fraktur script
Also, look at the following project from a few years back
http://emop.tamu.edu/outcomes/Franken-Plus
ShreeDevi
भजन - कीर्तन - आरती @ http://bhajans.ramparivar.com
On Mon, Mar 12, 2018 at 4:32 AM, Guillaume Desforges
wrote:
> Hi
>
> I want to try using Tesseract 4 for old manuscript languages ("The
> Song of Roland" and such).
>
> I have looked at
> https://github.com/tesseract-ocr/tesseract/wiki/TrainingTesseract-4.00
> but the steps are very unclear.
>
> I have an image and a text file with the line content for each line of
> manuscript text. The doc says what to do, but not how.
>
> I first thought I'd need img/box files pairs, but it seems it was for
> Tesseract 3 and is now irrelevant...
>
> So I guess my starting point is here :
> https://github.com/tesseract-ocr/tesseract/wiki/TrainingTesseract-4.00#tutorial-guide-to-lstmtraining
>
> There is no tool to create the lstm-recoder directly. Instead there
>> is a new tool, combine_lang_model which takes as input an
>> input_unicharset and script_dir(script_dir points to the langdata
>> directory)
>> and optional word list files. It creates the lstm-recoder from the
>> input_unicharset and creates all the dawgs, if wordlists are
>> provided, putting everything together into a traineddata file.
>
>
> I don't really get this part. How do I make input_unicharset ? What
> is langdata?
>
> Thanks
>
> Guillaume Desforges
>
> --
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>
> .
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>
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Re: [tesseract-ocr] Tesseract 4 for old languages
Please see the project https://github.com/OCR-D/ocrd-train
It has support for training tesseract if you provide line images and
matching ground truth text.
On Tue, Jun 12, 2018 at 8:19 PM wrote:
> Same question here. I see that the documentation on training Tesseract 4
> makes some reference to manuscripts:
>
> As with base Tesseract, there is a choice between rendering synthetic
> training data from fonts, or labeling some pre-existing images (like
> ancient manuscripts for example).
>
> So, if I understand correctly, there is no support yet for training with
> labelled pre-existing images ? The concept of font does not makes sense
> with manuscripts, and what we can use in this case is just pairs of images
> and text (transcription).
>
> Best,
> Jean-Baptiste Camps
>
> Le lundi 12 mars 2018 10:59:41 UTC+1, shree a écrit :
>>
>> >I have an image and a text file with the line content for each line of
>> manuscript text. The doc says what to do, but not how.
>>
>> >I first thought I'd need img/box files pairs, but it seems it was for
>> Tesseract 3 and is now irrelevant...
>>
>> Tesseract4.0.0beta.1 does not officially support LSTM training from
>> box/tif pairs.
>>
>> It uses box/tif pairs generated using the synthetic training data
>> generation pipeline using a training_text and set of fonts, for making the
>> lstmf files that are used by lstmtraining.
>>
>> langdata refers to the langdata repository under tesseract-ocr github
>> repo. The files in it have not been updated for 4.0.0
>>
>>
>>
>>
>> ShreeDevi
>>
>> भजन - कीर्तन - आरती @ http://bhajans.ramparivar.com
>>
>> On Mon, Mar 12, 2018 at 2:00 PM, ShreeDevi Kumar
>> wrote:
>>
>>> Please try tesseract 4.0.0beta.1 with languages such as
>>>
>>> *enm* (English, Middle (1100-1500))
>>>
>>> and
>>>
>>> Fraktur script
>>>
>>> Also, look at the following project from a few years back
>>>
>>> http://emop.tamu.edu/outcomes/Franken-Plus
>>>
>>> ShreeDevi
>>>
>>> भजन - कीर्तन - आरती @ http://bhajans.ramparivar.com
>>>
>>> On Mon, Mar 12, 2018 at 4:32 AM, Guillaume Desforges
>>> wrote:
>>>
Hi
I want to try using Tesseract 4 for old manuscript languages ("The Song
of Roland" and such).
I have looked at
https://github.com/tesseract-ocr/tesseract/wiki/TrainingTesseract-4.00
but the steps are very unclear.
I have an image and a text file with the line content for each line of
manuscript text. The doc says what to do, but not how.
I first thought I'd need img/box files pairs, but it seems it was for
Tesseract 3 and is now irrelevant...
So I guess my starting point is here :
https://github.com/tesseract-ocr/tesseract/wiki/TrainingTesseract-4.00#tutorial-guide-to-lstmtraining
There is no tool to create the lstm-recoder directly. Instead there is
> a new tool, combine_lang_model which takes as input an
> input_unicharset and script_dir(script_dir points to the langdata
> directory)
> and optional word list files. It creates the lstm-recoder from the
> input_unicharset and creates all the dawgs, if wordlists are
> provided, putting everything together into a traineddata file.
I don't really get this part. How do I make input_unicharset ? What
is langdata?
Thanks
Guillaume Desforges
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>>>
>>>
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>
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You recei
Re: [tesseract-ocr] Tesseract 4 for old languages
Same question here. I see that the documentation on training Tesseract 4
makes some reference to manuscripts:
As with base Tesseract, there is a choice between rendering synthetic
training data from fonts, or labeling some pre-existing images (like
ancient manuscripts for example).
So, if I understand correctly, there is no support yet for training with
labelled pre-existing images ? The concept of font does not makes sense
with manuscripts, and what we can use in this case is just pairs of images
and text (transcription).
Best,
Jean-Baptiste Camps
Le lundi 12 mars 2018 10:59:41 UTC+1, shree a écrit :
>
> >I have an image and a text file with the line content for each line of
> manuscript text. The doc says what to do, but not how.
>
> >I first thought I'd need img/box files pairs, but it seems it was for
> Tesseract 3 and is now irrelevant...
>
> Tesseract4.0.0beta.1 does not officially support LSTM training from
> box/tif pairs.
>
> It uses box/tif pairs generated using the synthetic training data
> generation pipeline using a training_text and set of fonts, for making the
> lstmf files that are used by lstmtraining.
>
> langdata refers to the langdata repository under tesseract-ocr github
> repo. The files in it have not been updated for 4.0.0
>
>
>
>
> ShreeDevi
>
> भजन - कीर्तन - आरती @ http://bhajans.ramparivar.com
>
> On Mon, Mar 12, 2018 at 2:00 PM, ShreeDevi Kumar > wrote:
>
>> Please try tesseract 4.0.0beta.1 with languages such as
>>
>> *enm* (English, Middle (1100-1500))
>>
>> and
>>
>> Fraktur script
>>
>> Also, look at the following project from a few years back
>>
>> http://emop.tamu.edu/outcomes/Franken-Plus
>>
>> ShreeDevi
>>
>> भजन - कीर्तन - आरती @ http://bhajans.ramparivar.com
>>
>> On Mon, Mar 12, 2018 at 4:32 AM, Guillaume Desforges > > wrote:
>>
>>> Hi
>>>
>>> I want to try using Tesseract 4 for old manuscript languages ("The Song
>>> of Roland" and such).
>>>
>>> I have looked at
>>> https://github.com/tesseract-ocr/tesseract/wiki/TrainingTesseract-4.00
>>> but the steps are very unclear.
>>>
>>> I have an image and a text file with the line content for each line of
>>> manuscript text. The doc says what to do, but not how.
>>>
>>> I first thought I'd need img/box files pairs, but it seems it was for
>>> Tesseract 3 and is now irrelevant...
>>>
>>> So I guess my starting point is here :
>>> https://github.com/tesseract-ocr/tesseract/wiki/TrainingTesseract-4.00#tutorial-guide-to-lstmtraining
>>>
>>> There is no tool to create the lstm-recoder directly. Instead there is
a new tool, combine_lang_model which takes as input an input_unicharset
and script_dir(script_dir points to the langdata directory) and
optional word list files. It creates the lstm-recoder from the
input_unicharset and creates all the dawgs, if wordlists are provided,
putting everything together into a traineddata file.
>>>
>>>
>>> I don't really get this part. How do I make input_unicharset ? What is
>>> langdata?
>>>
>>> Thanks
>>>
>>> Guillaume Desforges
>>>
>>> --
>>> You received this message because you are subscribed to the Google
>>> Groups "tesseract-ocr" group.
>>> To unsubscribe from this group and stop receiving emails from it, send
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>>> .
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>>> To view this discussion on the web visit
>>> https://groups.google.com/d/msgid/tesseract-ocr/fe1d68a2-76ce-4005-98ea-672710365517%40googlegroups.com
>>>
>>>
>>> .
>>> For more options, visit https://groups.google.com/d/optout.
>>>
>>
>>
>
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Re: [tesseract-ocr] Tesseract 4 for old languages
>I have an image and a text file with the line content for each line of
manuscript text. The doc says what to do, but not how.
>I first thought I'd need img/box files pairs, but it seems it was for
Tesseract 3 and is now irrelevant...
Tesseract4.0.0beta.1 does not officially support LSTM training from box/tif
pairs.
It uses box/tif pairs generated using the synthetic training data
generation pipeline using a training_text and set of fonts, for making the
lstmf files that are used by lstmtraining.
langdata refers to the langdata repository under tesseract-ocr github repo.
The files in it have not been updated for 4.0.0
ShreeDevi
भजन - कीर्तन - आरती @ http://bhajans.ramparivar.com
On Mon, Mar 12, 2018 at 2:00 PM, ShreeDevi Kumar
wrote:
> Please try tesseract 4.0.0beta.1 with languages such as
>
> *enm* (English, Middle (1100-1500))
>
> and
>
> Fraktur script
>
> Also, look at the following project from a few years back
>
> http://emop.tamu.edu/outcomes/Franken-Plus
>
> ShreeDevi
>
> भजन - कीर्तन - आरती @ http://bhajans.ramparivar.com
>
> On Mon, Mar 12, 2018 at 4:32 AM, Guillaume Desforges
> wrote:
>
>> Hi
>>
>> I want to try using Tesseract 4 for old manuscript languages ("The Song
>> of Roland" and such).
>>
>> I have looked at https://github.com/tesserac
>> t-ocr/tesseract/wiki/TrainingTesseract-4.00 but the steps are very
>> unclear.
>>
>> I have an image and a text file with the line content for each line of
>> manuscript text. The doc says what to do, but not how.
>>
>> I first thought I'd need img/box files pairs, but it seems it was for
>> Tesseract 3 and is now irrelevant...
>>
>> So I guess my starting point is here : https://github.com/tesseract
>> -ocr/tesseract/wiki/TrainingTesseract-4.00#tutorial-guide-to-lstmtraining
>>
>> There is no tool to create the lstm-recoder directly. Instead there is a
>>> new tool, combine_lang_model which takes as input an input_unicharset
>>> and script_dir(script_dir points to the langdata directory) and
>>> optional word list files. It creates the lstm-recoder from the
>>> input_unicharset and creates all the dawgs, if wordlists are provided,
>>> putting everything together into a traineddata file.
>>
>>
>> I don't really get this part. How do I make input_unicharset ? What is
>> langdata?
>>
>> Thanks
>>
>> Guillaume Desforges
>>
>> --
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>> "tesseract-ocr" group.
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>> To view this discussion on the web visit https://groups.google.com/d/ms
>> gid/tesseract-ocr/fe1d68a2-76ce-4005-98ea-672710365517%40googlegroups.com
>>
>> .
>> For more options, visit https://groups.google.com/d/optout.
>>
>
>
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Re: [tesseract-ocr] Tesseract 4 for old languages
Please try tesseract 4.0.0beta.1 with languages such as
*enm* (English, Middle (1100-1500))
and
Fraktur script
Also, look at the following project from a few years back
http://emop.tamu.edu/outcomes/Franken-Plus
ShreeDevi
भजन - कीर्तन - आरती @ http://bhajans.ramparivar.com
On Mon, Mar 12, 2018 at 4:32 AM, Guillaume Desforges
wrote:
> Hi
>
> I want to try using Tesseract 4 for old manuscript languages ("The Song of
> Roland" and such).
>
> I have looked at https://github.com/tesseract-ocr/tesseract/wiki/
> TrainingTesseract-4.00 but the steps are very unclear.
>
> I have an image and a text file with the line content for each line of
> manuscript text. The doc says what to do, but not how.
>
> I first thought I'd need img/box files pairs, but it seems it was for
> Tesseract 3 and is now irrelevant...
>
> So I guess my starting point is here : https://github.com/
> tesseract-ocr/tesseract/wiki/TrainingTesseract-4.00#
> tutorial-guide-to-lstmtraining
>
> There is no tool to create the lstm-recoder directly. Instead there is a
>> new tool, combine_lang_model which takes as input an input_unicharset
>> and script_dir(script_dir points to the langdata directory) and
>> optional word list files. It creates the lstm-recoder from the
>> input_unicharset and creates all the dawgs, if wordlists are provided,
>> putting everything together into a traineddata file.
>
>
> I don't really get this part. How do I make input_unicharset ? What is
> langdata?
>
> Thanks
>
> Guillaume Desforges
>
> --
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> msgid/tesseract-ocr/fe1d68a2-76ce-4005-98ea-672710365517%
> 40googlegroups.com
>
> .
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[tesseract-ocr] Tesseract 4 for old languages
Hi
I want to try using Tesseract 4 for old manuscript languages ("The Song of
Roland" and such).
I have looked
at https://github.com/tesseract-ocr/tesseract/wiki/TrainingTesseract-4.00
but the steps are very unclear.
I have an image and a text file with the line content for each line of
manuscript text. The doc says what to do, but not how.
I first thought I'd need img/box files pairs, but it seems it was for
Tesseract 3 and is now irrelevant...
So I guess my starting point is here
:
https://github.com/tesseract-ocr/tesseract/wiki/TrainingTesseract-4.00#tutorial-guide-to-lstmtraining
There is no tool to create the lstm-recoder directly. Instead there is a
> new tool, combine_lang_model which takes as input an input_unicharset and
> script_dir(script_dir points to the langdata directory) and optional word
> list files. It creates the lstm-recoder from the input_unicharset and
> creates all the dawgs, if wordlists are provided, putting everything
> together into a traineddata file.
I don't really get this part. How do I make input_unicharset ? What is
langdata?
Thanks
Guillaume Desforges
--
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