# How to access an already rendered object?

**URL:** <https://discourse.slicer.org/t/how-to-access-an-already-rendered-object/27098>\
**Category:** Development\
**Tags:** python, extensions\
**Created:** [January 7, 2023, 3:02pm UTC](https://discourse.slicer.org/t/how-to-access-an-already-rendered-object/27098 "2023-01-07T15:02:34Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![dsa934](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/dsa934/32/17907_2.png) [@dsa934](https://discourse.slicer.org/u/dsa934)\
**Post date:** [January 7, 2023, 3:02pm UTC](https://discourse.slicer.org/t/how-to-access-an-already-rendered-object/27098/1 "2023-01-07T15:02:34Z")

</div>

Operating system: window 11  
Slicer version: 4.13.0

Hi, all

Which function should be referenced to access the object in the image rendered on the 3D sclier?

I’m planning a Python extension module, and I want to know the internal function to access information about a specific object (.ply) that has already been rendered on the 3D slicer.