cause tesseract operate at 300dpi, so you should change to that level. for 
example the screen dpi is 72, then enlarge the screenshot to 400% 

On Friday, August 4, 2017 at 1:56:32 AM UTC+8, James Lee wrote:
>
> Is there way to find out how much to enlarge a screenshot for best 
> accuracy?
> Is there a math formula if I know the internal display resolution (not 
> dpi?)
> Thanks!
>
>

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