check if your leptonica is compiled without pnd support or if your files
are really png.

Dňa št 21. 2. 2019, 11:41 <[email protected]> napísal(a):

> hi, I have a problem.
> I am training tesseract4.0 from scratch with my own image.
> when I training with yaru.game.exp0.lstmf with other 2 lstmf files, no
> error happens.
>
> However, when I try to add more files for training, erro happens below. It
> seems like a file reading error related with libpng.
>
> But I am so confused that File yaru.game.exp0.lstmf worked well before,
> why it happens when I train with more data?
> And how can I solve this problem?
>
> File yaru.game.exp0.lstmf page 1448 (Perfect):
> libpng error: invalid distance too far back
> Error in pixReadMemPng: internal png error
> Error in pixReadMem: png: no pix returned
> src_pix != nullptr:Error:Assert failed:in file
> ../../../src/ccstruct/imagedata.cpp, line 232
> sh: 1: kill: Segmentation fault (core dumped)
>
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