# Patches for ITK 4.13.2

**URL:** https://discourse.itk.org/t/patches-for-itk-4-13-2/1582
**Category:** Community
**Created:** [February 7, 2019, 11:19pm UTC](https://discourse.itk.org/t/patches-for-itk-4-13-2/1582 "2019-02-07T23:19:26Z")
**Posts on this page:** 1
**Showing post:** 7

<div class="post-metadata">

### Author: ![matt.mccormick](https://discourse.itk.org/user_avatar/discourse.itk.org/matt.mccormick/32/7_2.png) [@matt.mccormick](https://discourse.itk.org/u/matt.mccormick)
#### Post date: [February 11, 2019, 4:09pm UTC](https://discourse.itk.org/t/patches-for-itk-4-13-2/1582/7 "2019-02-11T16:09:38Z")

</div>

> I’m especially happy about [“\_PERF: Remove SystemInformation data from ResourceProbe”](https://github.com/InsightSoftwareConsortium/ITK/commit/b13f6a86cb250328f0c185f509649b370bbe49f4),

Yes, that fix was quite important! Thanks again!

> You might still consider the following commit, as it involves just two lines of code, and yields quite a large performance improvement for `N4BiasFieldCorrectionImageFilter` :

Our bug-fix releases are limited in scope to bug fixes, and in general we do not add performance related patches to bug-fix releases. This is standard practice for [semantic versioning](https://semver.org/), matching expectations for the release content and avoiding bugs that may come along with the performance improvement. The previously mentioned patch is an exception since it passes into the bug-fix category.

The referenced performance patches (along with many other awesome performance improvements) are available in [ITK 5.0 RC 1](https://discourse.itk.org/t/itk-5-0-release-candidate-1-meshes/1576) – everyone is encourage to try it, if they have not already!

---

_[View the full topic](https://discourse.itk.org/t/patches-for-itk-4-13-2/1582)._