how to do zooming algorithm

so ı was looking zooming algorithm and ı found this matlab code , but ı couldnt understand completely that part whis is marked on picture,please explain to me

 Accepted Answer

Image Analyst
Image Analyst on 10 Aug 2018
Edited: Image Analyst on 10 Aug 2018
It's not even worth trying to understand. That code is junk.
Simply use imcrop() and imresize(),
or see the attached zooming demo.

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mts
on 10 Aug 2018

Commented:

mts
on 10 Aug 2018

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