# NDVI with Sequoia camera

**URL:** <https://community.pix4d.com/t/ndvi-with-sequoia-camera/12465>\
**Category:** PIX4Dmapper Questions/Troubleshooting\
**Created:** [April 21, 2020, 7:40pm UTC](https://community.pix4d.com/t/ndvi-with-sequoia-camera/12465 "2020-04-21T19:40:10Z")\
**Posts on this page:** 1\
**Showing post:** 47

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**Author:** ![Jose.Arnaudo](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/jose.arnaudo/32/5966_2.png) [@Jose.Arnaudo](https://community.pix4d.com/u/Jose.Arnaudo)\
**Post date:** [September 5, 2022, 9:14am UTC](https://community.pix4d.com/t/ndvi-with-sequoia-camera/12465/47 "2022-09-05T09:14:42Z")

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> [@baptiste.ecoffey](#):
>
> Photochemical reflectance index (PRI)

Hi,

As long as you have the bands 531n and 570n from a camera with GPS and sufficient overlap to generate an orthomosaic, you should be able to obtain the reflecante maps.  
Then, you can calculate the index, (R531−R570)/(R531+R570).

Best,

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