confuse whether Otsu Thresholding affects lstm training

[kotom...@gmail.com]

I go through the source code and find tesseract do Otsu Thresholding and put the binary pix in the Thresholder object.

But It seems  the Thresholder object haven't been  invoked if I use lstm engines.

As well as dpi size,tesseract wiki said it is better for 300 dpi. This is a requirement for tesseract 3.0 engine or even before, right?

If I training lstm tesseract, it doesnot matter whether I do binary or resize the image, right?

I will be every appreciated if any response is sent. Thank you so much!