Tesseract 4.0: VGSLSpecs

[Kay-Michael Würzner]

Dear @,

I played around with training the new LSTM mode. According to the documentation of the network specification (https://github.com/tesseract-ocr/tesseract/wiki/VGSLSpecs), the last number in the first tupel called 'depth' corresponds to the type of input (i.e. 1 ... grayscale, 3 ... color). However one o the given examples uses '48' in this position:

[1,1,0,48 Lbx256 O1c105]

Using an assumingly corrected specification

[1,48,0,1 Lbx256 O1c105]

causes serious runtime issues namely each iteration takes several minutes and huge amounts of memory are adressed. Any hints on what I am doing wrong here?

Many thanks in advance,
Kay


[ShreeDevi Kumar]

Did you try out the commands as per the LSTM training tutorial?

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[Kay-Michael Würzner]

Yes,  I did and in principle everything works like a charm which is great. What I want to accomplish now is some understanding: Why do I have to set a documented parameter in some undocumented way or to be more precise set this parameter to a value which conflicts with the documentation to make the whole process work?

Cheers,
Kay

On Friday, December 16, 2016 at 5:36:02 PM UTC+1, shree wrote:

Did you try out the commands as per the LSTM training tutorial?

On 16-Dec-2016 8:31 PM, "Kay-Michael Würzner" <wuer...@gmail.com> wrote:

Dear @,

I played around with training the new LSTM mode. According to the documentation of the network specification (https://github.com/tesseract-ocr/tesseract/wiki/VGSLSpecs), the last number in the first tupel called 'depth' corresponds to the type of input (i.e. 1 ... grayscale, 3 ... color). However one o the given examples uses '48' in this position:

[1,1,0,48 Lbx256 O1c105]

Using an assumingly corrected specification

[1,48,0,1 Lbx256 O1c105]

causes serious runtime issues namely each iteration takes several minutes and huge amounts of memory are adressed. Any hints on what I am doing wrong here?

Many thanks in advance,
Kay


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[ShreeDevi Kumar]

+ Ray Smith

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