Open Slide Read Region

[Stephen Yip]

Hi,

I am trying to crop a level_0 region out based on the level_2 region using
the osi.OpenSlide().read_region(). The resolution of level_0 is *eight*
times higher than level_2.

I used the read_region function for cropping.
osi.OpenSlide().read_region(x1,y1,level=0,dim1,dim2)

where (x1,y1) are the coordinate of the below green rectangle (see figure)
multiply by *eight*.  dim1 and dim2 are the height and width of the
rectangle multiply by *eight*.

The level_0 cropped region was shifted.

Does anyone know how to fix this?

Thank you very much!
Stephen

[image: Inline image 1]
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