# Understand metadata to extract subFOV information

**URL:** <https://forum.microlist.org/t/understand-metadata-to-extract-subfov-information/2419>\
**Category:** Software\
**Tags:** ultramicroscope\
**Created:** [February 19, 2024, 8:27pm UTC](https://forum.microlist.org/t/understand-metadata-to-extract-subfov-information/2419 "2024-02-19T20:27:10Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![arnaudbore](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.microlist.org/arnaudbore/32/1376_2.png) [@arnaudbore](https://forum.microlist.org/u/arnaudbore)\
**Post date:** [February 19, 2024, 8:27pm UTC](https://forum.microlist.org/t/understand-metadata-to-extract-subfov-information/2419/1 "2024-02-19T20:27:10Z")

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Dear community,

I need your help to understand a little bit better the output files I get from our “Ultramicroscope CDC 2x”.  
I try to make sense of the metadata found in our acquisition (I converted the info embedded into my image into a json file easier to read than the xml):

- z0: [link to json z0](https://box.criugm.qc.ca/f/b2cb34772fc94bb383f7/?dl=1)
- z2: [link to json z2](https://box.criugm.qc.ca/f/52461f002aca460bbb06/?dl=1)

z0 is the “big” FOV acquisition  
z2 is a zoomed region.

Knowing these metada I would like to know if somebody would be able to tell me where the z2 FOV is within the z0 FOV ?

Our ultimate goal will be to register these images with MRI images, if you have any tips that would be very helpful.

Thank you in advance  
Arnaud