# Image analysis and comparison

**URL:** <https://discourse.nodered.org/t/image-analysis-and-comparison/20698>\
**Category:** General\
**Created:** [21 January 2020 19:35 UTC](https://discourse.nodered.org/t/image-analysis-and-comparison/20698 "2020-01-21T19:35:25Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![Jotarod](https://avatars.discourse-cdn.com/v4/letter/j/53a042/32.png) [@Jotarod](https://discourse.nodered.org/u/Jotarod)\
**Post date:** [4 November 2020 10:20 UTC](https://discourse.nodered.org/t/image-analysis-and-comparison/20698/5 "2020-11-04T10:20:19Z")

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Hi @Colin ,  
In my case, I would like to compare 2 images and know by percentage difference.  
Example:  
Imagine a photo of one pack with 24 cans, from above view and the same pack with 2 can less.... Is that what I would like to detect...  
Some idea?  
Thanks!

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