Please check out the recent commits in master branch

https://github.com/tesseract-ocr/tesseract/pull/2554

On Fri, 19 Jul 2019, 10:55 ElGato ElMago, <[email protected]> wrote:

> Hi,
>
> Let's call them phantom characters then.
>
> Was psm 7 the solution for the issue 1778?  None of the psm option didn't
> solve my problem though I see different output.
>
> I use tesseract 5.0-alpha mostly but 4.1 showed the same results anyway.
> How did you get bounding box for each character?  Alto and lstmbox
> only show bbox for a group of characters.
>
> ElMagoElGato
>
> 2019年7月17日水曜日 18時58分31秒 UTC+9 Lorenzo Blz:
>
>> Phantom characters here for me too:
>>
>> https://github.com/tesseract-ocr/tesseract/issues/1778
>>
>> Are you using 4.1? Bounding boxes were fixed in 4.1 maybe this was also
>> improved.
>>
>> I wrote some code that uses symbols iterator to discard symbols that are
>> clearly duplicated: too small, overlapping, etc. But it was not easy to
>> make it work decently and it is not 100% reliable with false negatives and
>> positives. I cannot share the code and it is quite ugly anyway.
>>
>> Here there is another MRZ model with training data:
>>
>> https://github.com/DoubangoTelecom/tesseractMRZ
>>
>>
>>
>>
>> Lorenzo
>>
>>
>> Il giorno mer 17 lug 2019 alle ore 11:26 Claudiu <[email protected]> ha
>> scritto:
>>
>>> I’m getting the “phantom character” issue as well using the OCRB that
>>> Shree trained on MRZ lines. For example for a 0 it will sometimes add both
>>> a 0 and an O to the output , thus outputting 45 characters total instead of
>>> 44. I haven’t looked at the bounding box output yet but I suspect a phantom
>>> thin character is added somewhere that I can discard .. or maybe two chars
>>> will have the same bounding box. If anyone else has fixed this issue
>>> further up (eg so the output doesn’t contain the phantom characters in the
>>> first place) id be interested.
>>>
>>> On Wed, Jul 17, 2019 at 10:01 AM ElGato ElMago <[email protected]>
>>> wrote:
>>>
>>>> Hi,
>>>>
>>>> I'll go back to more of training later.  Before doing so, I'd like to
>>>> investigate results a little bit.  The hocr and lstmbox options give some
>>>> details of positions of characters.  The results show positions that
>>>> perfectly correspond to letters in the image.  But the text output contains
>>>> a character that obviously does not exist.
>>>>
>>>> Then I found a config file 'lstmdebug' that generates far more
>>>> information.  I hope it explains what happened with each character.  I'm
>>>> yet to read the debug output but I'd appreciate it if someone could tell me
>>>> how to read it because it's really complex.
>>>>
>>>> Regards,
>>>> ElMagoElGato
>>>>
>>>> 2019年6月14日金曜日 19時58分49秒 UTC+9 shree:
>>>>
>>>>> See https://github.com/Shreeshrii/tessdata_MICR
>>>>>
>>>>> I have uploaded my files there.
>>>>>
>>>>> https://github.com/Shreeshrii/tessdata_MICR/blob/master/MICR.sh
>>>>> is the bash script that runs the training.
>>>>>
>>>>> You can modify as needed. Please note this is for legacy/base
>>>>> tesseract --oem 0.
>>>>>
>>>>> On Fri, Jun 14, 2019 at 1:26 PM ElGato ElMago <[email protected]>
>>>>> wrote:
>>>>>
>>>>>> Thanks a lot, shree.  It seems you know everything.
>>>>>>
>>>>>> I tried the MICR0.traineddata and the first two mcr.traineddata.  The
>>>>>> last one was blocked by the browser.  Each of the traineddata had mixed
>>>>>> results.  All of them are getting symbols fairly good but getting spaces
>>>>>> randomly and reading some numbers wrong.
>>>>>>
>>>>>> MICR0 seems the best among them.  Did you suggest that you'd be able
>>>>>> to update it?  It gets tripple D very often where there's only one, and 
>>>>>> so
>>>>>> on.
>>>>>>
>>>>>> Also, I tried to fine tune from MICR0 but I found that I need to
>>>>>> change the language-specific.sh.  It specifies some parameters for each
>>>>>> language.  Do you have any guidance for it?
>>>>>>
>>>>>> 2019年6月14日金曜日 1時48分40秒 UTC+9 shree:
>>>>>>>
>>>>>>> see
>>>>>>> http://www.devscope.net/Content/ocrchecks.aspx
>>>>>>> https://github.com/BigPino67/Tesseract-MICR-OCR
>>>>>>>
>>>>>>> https://groups.google.com/d/msg/tesseract-ocr/obWI4cz8rXg/6l82hEySgOgJ
>>>>>>>
>>>>>>>
>>>>>>> On Mon, Jun 10, 2019 at 11:21 AM ElGato ElMago <[email protected]>
>>>>>>> wrote:
>>>>>>>
>>>>>>>> That'll be nice if there's traineddata out there but I didn't find
>>>>>>>> any.  I see free fonts and commercial OCR software but not traineddata.
>>>>>>>> Tessdata repository obviously doesn't have one, either.
>>>>>>>>
>>>>>>>> 2019年6月8日土曜日 1時52分10秒 UTC+9 shree:
>>>>>>>>>
>>>>>>>>> Please also search for existing MICR traineddata files.
>>>>>>>>>
>>>>>>>>> On Thu, Jun 6, 2019 at 1:09 PM ElGato ElMago <[email protected]>
>>>>>>>>> wrote:
>>>>>>>>>
>>>>>>>>>> So I did several tests from scratch.  In the last attempt, I made
>>>>>>>>>> a training text with 4,000 lines in the following format,
>>>>>>>>>>
>>>>>>>>>> 110004310510<   <02 :4002=0181:801= 0008752 <00039 ;0000001000;
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> and combined it with eng.digits.training_text in which symbols
>>>>>>>>>> are converted to E13B symbols.  This makes about 12,000 lines of 
>>>>>>>>>> training
>>>>>>>>>> text.  It's amazing that this thing generates a good reader out of
>>>>>>>>>> nowhere.  But then it is not very good.  For example:
>>>>>>>>>>
>>>>>>>>>> <01 :1901=1386:021= 1111001<10001< ;0000090134;
>>>>>>>>>>
>>>>>>>>>> is a result on the image attached.  It's close but the last '<'
>>>>>>>>>> in the result text doesn't exist on the image.  It's a small failure 
>>>>>>>>>> but it
>>>>>>>>>> causes a greater trouble in parsing.
>>>>>>>>>>
>>>>>>>>>> What would you suggest from here to increase accuracy?
>>>>>>>>>>
>>>>>>>>>>    - Increase the number of lines in the training text
>>>>>>>>>>    - Mix up more variations in the training text
>>>>>>>>>>    - Increase the number of iterations
>>>>>>>>>>    - Investigate wrong reads one by one
>>>>>>>>>>    - Or else?
>>>>>>>>>>
>>>>>>>>>> Also, I referred to engrestrict*.* and could generate similar
>>>>>>>>>> result with the fine-tuning-from-full method.  It seems a bit faster 
>>>>>>>>>> to get
>>>>>>>>>> to the same level but it also stops at a 'good' level.  I can go with
>>>>>>>>>> either way if it takes me to the bright future.
>>>>>>>>>>
>>>>>>>>>> Regards,
>>>>>>>>>> ElMagoElGato
>>>>>>>>>>
>>>>>>>>>> 2019年5月30日木曜日 15時56分02秒 UTC+9 ElGato ElMago:
>>>>>>>>>>>
>>>>>>>>>>> Thanks a lot, Shree. I'll look it in.
>>>>>>>>>>>
>>>>>>>>>>> 2019年5月30日木曜日 14時39分52秒 UTC+9 shree:
>>>>>>>>>>>>
>>>>>>>>>>>> See https://github.com/Shreeshrii/tessdata_shreetest
>>>>>>>>>>>>
>>>>>>>>>>>> Look at the files engrestrict*.* and also
>>>>>>>>>>>> https://github.com/Shreeshrii/tessdata_shreetest/blob/master/eng.digits.training_text
>>>>>>>>>>>>
>>>>>>>>>>>> Create training text of about 100 lines and finetune for 400
>>>>>>>>>>>> lines
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> On Thu, May 30, 2019 at 9:38 AM ElGato ElMago <
>>>>>>>>>>>> [email protected]> wrote:
>>>>>>>>>>>>
>>>>>>>>>>>>> I had about 14 lines as attached.  How many lines would you
>>>>>>>>>>>>> recommend?
>>>>>>>>>>>>>
>>>>>>>>>>>>> Fine tuning gives much better result but it tends to pick
>>>>>>>>>>>>> other character than in E13B that only has 14 characters, 0 
>>>>>>>>>>>>> through 9 and 4
>>>>>>>>>>>>> symbols.  I thought training from scratch would eliminate such 
>>>>>>>>>>>>> confusion.
>>>>>>>>>>>>>
>>>>>>>>>>>>> 2019年5月30日木曜日 10時43分08秒 UTC+9 shree:
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> For training from scratch a large training text and hundreds
>>>>>>>>>>>>>> of thousands of iterations are recommended.
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> If you are just fine tuning for a font try to follow
>>>>>>>>>>>>>> instructions for training for impact, with your font.
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> On Thu, 30 May 2019, 06:05 ElGato ElMago, <
>>>>>>>>>>>>>> [email protected]> wrote:
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> Thanks, Shree.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> Yes, I saw the instruction.  The steps I made are as follows:
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> Using tesstrain.sh:
>>>>>>>>>>>>>>> src/training/tesstrain.sh --fonts_dir /usr/share/fonts
>>>>>>>>>>>>>>> --lang eng --linedata_only \
>>>>>>>>>>>>>>>   --noextract_font_properties --langdata_dir ../langdata \
>>>>>>>>>>>>>>>   --tessdata_dir ./tessdata \
>>>>>>>>>>>>>>>   --fontlist "E13Bnsd" --output_dir ~/tesstutorial/e13beval \
>>>>>>>>>>>>>>>   --training_text ../langdata/eng/eng.training_e13b_text
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> Training from scratch:
>>>>>>>>>>>>>>> mkdir -p ~/tesstutorial/e13boutput
>>>>>>>>>>>>>>> src/training/lstmtraining --debug_interval 100 \
>>>>>>>>>>>>>>>   --traineddata ~/tesstutorial/e13beval/eng/eng.traineddata \
>>>>>>>>>>>>>>>   --net_spec '[1,36,0,1 Ct3,3,16 Mp3,3 Lfys48 Lfx96 Lrx96
>>>>>>>>>>>>>>> Lfx256 O1c111]' \
>>>>>>>>>>>>>>>   --model_output ~/tesstutorial/e13boutput/base
>>>>>>>>>>>>>>> --learning_rate 20e-4 \
>>>>>>>>>>>>>>>   --train_listfile
>>>>>>>>>>>>>>> ~/tesstutorial/e13beval/eng.training_files.txt \
>>>>>>>>>>>>>>>   --eval_listfile
>>>>>>>>>>>>>>> ~/tesstutorial/e13beval/eng.training_files.txt \
>>>>>>>>>>>>>>>   --max_iterations 5000
>>>>>>>>>>>>>>> &>~/tesstutorial/e13boutput/basetrain.log
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> Test with base_checkpoint:
>>>>>>>>>>>>>>> src/training/lstmeval --model
>>>>>>>>>>>>>>> ~/tesstutorial/e13boutput/base_checkpoint \
>>>>>>>>>>>>>>>   --traineddata ~/tesstutorial/e13beval/eng/eng.traineddata \
>>>>>>>>>>>>>>>   --eval_listfile
>>>>>>>>>>>>>>> ~/tesstutorial/e13beval/eng.training_files.txt
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> Combining output files:
>>>>>>>>>>>>>>> src/training/lstmtraining --stop_training \
>>>>>>>>>>>>>>>   --continue_from ~/tesstutorial/e13boutput/base_checkpoint \
>>>>>>>>>>>>>>>   --traineddata ~/tesstutorial/e13beval/eng/eng.traineddata \
>>>>>>>>>>>>>>>   --model_output ~/tesstutorial/e13boutput/eng.traineddata
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> Test with eng.traineddata:
>>>>>>>>>>>>>>> tesseract e13b.png out --tessdata-dir
>>>>>>>>>>>>>>> /home/koichi/tesstutorial/e13boutput
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> The training from scratch ended as:
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> At iteration 561/2500/2500, Mean rms=0.159%, delta=0%, char
>>>>>>>>>>>>>>> train=0%, word train=0%, skip ratio=0%,  New best char error = 
>>>>>>>>>>>>>>> 0 wrote best
>>>>>>>>>>>>>>> model:/home/koichi/tesstutorial/e13boutput/base0_561.checkpoint 
>>>>>>>>>>>>>>> wrote
>>>>>>>>>>>>>>> checkpoint.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> The test with base_checkpoint returns nothing as:
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> At iteration 0, stage 0, Eval Char error rate=0, Word error
>>>>>>>>>>>>>>> rate=0
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> The test with eng.traineddata and e13b.png returns out.txt.
>>>>>>>>>>>>>>> Both files are attached.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> Training seems to have worked fine.  I don't know how to
>>>>>>>>>>>>>>> translate the test result from base_checkpoint.  The generated
>>>>>>>>>>>>>>> eng.traineddata obviously doesn't work well. I suspect the 
>>>>>>>>>>>>>>> choice of
>>>>>>>>>>>>>>> --traineddata in combining output files is bad but I have no 
>>>>>>>>>>>>>>> clue.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> Regards,
>>>>>>>>>>>>>>> ElMagoElGato
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> BTW, I referred to your tess4training in the process.  It
>>>>>>>>>>>>>>> helped a lot.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> 2019年5月29日水曜日 19時14分08秒 UTC+9 shree:
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> see
>>>>>>>>>>>>>>>> https://github.com/tesseract-ocr/tesseract/wiki/TrainingTesseract-4.00#combining-the-output-files
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> On Wed, May 29, 2019 at 3:18 PM ElGato ElMago <
>>>>>>>>>>>>>>>> [email protected]> wrote:
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> Hi,
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> I wish to make a trained data for E13B font.
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> I read the training tutorial and made a base_checkpoint
>>>>>>>>>>>>>>>>> file according to the method in Training From Scratch.  Now, 
>>>>>>>>>>>>>>>>> how can I make
>>>>>>>>>>>>>>>>> a trained data from the base_checkpoint file?
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> --
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>>>>>>>>>>>>>>>>> .
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> --
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> ____________________________________________________________
>>>>>>>>>>>>>>>> भजन - कीर्तन - आरती @ http://bhajans.ramparivar.com
>>>>>>>>>>>>>>>>
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>>>>>>>>>>>>
>>>>>>>>>>>> --
>>>>>>>>>>>>
>>>>>>>>>>>> ____________________________________________________________
>>>>>>>>>>>> भजन - कीर्तन - आरती @ http://bhajans.ramparivar.com
>>>>>>>>>>>>
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>>>>>>>>>
>>>>>>>>> --
>>>>>>>>>
>>>>>>>>> ____________________________________________________________
>>>>>>>>> भजन - कीर्तन - आरती @ http://bhajans.ramparivar.com
>>>>>>>>>
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>>>>>>> --
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>>>>>>> ____________________________________________________________
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>>>>> ____________________________________________________________
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