# Image quantization techniques?

**URL:** <https://discourse.slicer.org/t/image-quantization-techniques/13420>\
**Category:** Support\
**Created:** [September 10, 2020, 12:46pm UTC](https://discourse.slicer.org/t/image-quantization-techniques/13420 "2020-09-10T12:46:23Z")\
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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [September 10, 2020, 1:02pm UTC](https://discourse.slicer.org/t/image-quantization-techniques/13420/2 "2020-09-10T13:02:41Z")

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“Simple filters” module offers a number of filters intensity rescaling, which can be used for compressing dynamic range of the image. Try RescaleIntensityFilter, IntensityWindowingFilter, ShiftScaleImageFilter, etc.

You can get the currently displayed window/level (or min/max) value from Volumes module, Display section.

Going from 16 bits to 8 bits is just 2x memory reduction, though, so it might not worth the trouble. If you increase spacing along each axis by 3x then you get 27x reduction.

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