# Removing noise on the asphalt pavement

**URL:** <https://forum.opencv.org/t/removing-noise-on-the-asphalt-pavement/14392>\
**Category:** Python\
**Created:** [August 30, 2023, 12:04am UTC](https://forum.opencv.org/t/removing-noise-on-the-asphalt-pavement/14392 "2023-08-30T00:04:53Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![nur92](https://avatars.discourse-cdn.com/v4/letter/n/aca169/32.png) [@nur92](https://forum.opencv.org/u/nur92)\
**Post date:** [August 30, 2023, 12:04am UTC](https://forum.opencv.org/t/removing-noise-on-the-asphalt-pavement/14392/1 "2023-08-30T00:04:54Z")

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Hello,

I want to ask regarding removing the noise. I’m new with this topic, as in the picture, I try to use median (below) and gaussian blur (up) from the binary inverse threshold. My aim is to highlight the crack image only. Is there anyone have idea how to remove the noise as in the picture attached.  
Thank you.

 ![blur_img](https://us1.discourse-cdn.com/flex020/uploads/opencv/original/2X/1/1422372cbf447f956cd8b0a4fb1d3f06c6591d17.jpeg)

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<div class="post-metadata">

**Author:** ![nur92](https://avatars.discourse-cdn.com/v4/letter/n/aca169/32.png) [@nur92](https://forum.opencv.org/u/nur92)\
**Post date:** [August 30, 2023, 12:21am UTC](https://forum.opencv.org/t/removing-noise-on-the-asphalt-pavement/14392/2 "2023-08-30T00:21:58Z")

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![median_img](https://us1.discourse-cdn.com/flex020/uploads/opencv/original/2X/4/42444ba8ba98d269b5aa46c68805d38b0e1d8f9f.png)