# Filtering out shadows due to high dence material

**URL:** <https://discourse.slicer.org/t/filtering-out-shadows-due-to-high-dence-material/32271>\
**Category:** Support\
**Created:** [October 17, 2023, 2:42pm UTC](https://discourse.slicer.org/t/filtering-out-shadows-due-to-high-dence-material/32271 "2023-10-17T14:42:27Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Fpuaw](https://avatars.discourse-cdn.com/v4/letter/f/e47c2d/32.png) [@Fpuaw](https://discourse.slicer.org/u/Fpuaw)\
**Post date:** [October 17, 2023, 2:42pm UTC](https://discourse.slicer.org/t/filtering-out-shadows-due-to-high-dence-material/32271/1 "2023-10-17T14:42:27Z")

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Is there a filter in 3D Slicer to reduce the shadows due to high and low dence material. Some programs combine a high voltage and a low voltage image to reduce this (like a HDR image).

The picture is from a werth

 ![shadow](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/d/2/d2dcc310fece89dd9050d344d05b7d840155d712.png)

Thanks