# Changing Intensity

**URL:** <https://discourse.slicer.org/t/changing-intensity/14243>\
**Category:** Support\
**Created:** [October 25, 2020, 9:03pm UTC](https://discourse.slicer.org/t/changing-intensity/14243 "2020-10-25T21:03:19Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Ghoncheh\_Amouzandeh](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/ghoncheh_amouzandeh/32/8602_2.png) [@Ghoncheh\_Amouzandeh](https://discourse.slicer.org/u/Ghoncheh_Amouzandeh)\
**Post date:** [October 25, 2020, 9:03pm UTC](https://discourse.slicer.org/t/changing-intensity/14243/1 "2020-10-25T21:03:19Z")

</div>

How can I manually change image intensity on this version? I’m using an iMac.

Operating system: Mac  
Slicer version:4.11

---

<div class="post-metadata">

**Author:** ![muratmaga](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/muratmaga/32/3622_2.png) [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Post date:** [October 26, 2020, 4:30am UTC](https://discourse.slicer.org/t/changing-intensity/14243/2 "2020-10-26T04:30:59Z")

</div>

If you mean adjusting window/level for better contrast, you can do that through the window/level tool of the mouse modes. See more information at [https://slicer.readthedocs.io/en/latest/user\_guide/user\_interface.html#mouse-modes](https://slicer.readthedocs.io/en/latest/user_guide/user_interface.html#mouse-modes)

Otherwise you can see a number of filters in SimpleFilters (rescale intensity, intensity windowing) filters to modify the intensity distribution of your image.

---

<div class="post-metadata">

**Author:** ![Ghoncheh\_Amouzandeh](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/ghoncheh_amouzandeh/32/8602_2.png) [@Ghoncheh\_Amouzandeh](https://discourse.slicer.org/u/Ghoncheh_Amouzandeh)\
**Post date:** [October 26, 2020, 10:18pm UTC](https://discourse.slicer.org/t/changing-intensity/14243/3 "2020-10-26T22:18:27Z")

</div>

Thank you! It was really helpful.