How to calculate the area from ndpi file

苏斐 sufei_sh at
Tue Jul 18 21:20:53 EDT 2017

Hi Opensliders,

I’m new for OpenSlide. I have some .ndpi files with 400x high resolution from HAMAMATSU scan. I’d like to calculate the area of contour. I get the area of target contour with cv2::contourArea(). How could I convert the value to mm2?

Best wishes,


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