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!

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