# Stripes while stitching Thermal

**URL:** <https://community.pix4d.com/t/stripes-while-stitching-thermal/20818>\
**Category:** PIX4Dmapper Questions/Troubleshooting\
**Created:** [December 17, 2021, 11:32pm UTC](https://community.pix4d.com/t/stripes-while-stitching-thermal/20818 "2021-12-17T23:32:41Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![syntanjey](https://avatars.discourse-cdn.com/v4/letter/s/85e7bf/32.png) [@syntanjey](https://community.pix4d.com/u/syntanjey)\
**Post date:** [December 17, 2021, 11:32pm UTC](https://community.pix4d.com/t/stripes-while-stitching-thermal/20818/1 "2021-12-17T23:32:41Z")

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Hello!

We finish with a strange stripes when trying to stitch a thermal ortho  
Files are equalized with a flir tools left and unequalized right

 ![IMG_20211217_172516](https://global.discourse-cdn.com/pix4d/original/2X/a/a7d8eb29458c6f417a4ce409749801982704e8e2.jpeg)

Can anybody help to find where is the problem and how to correct?

Please find below a link to the files (Rjpgs from a xt21)  
[https://cloud.mail.ru/public/gDeN/GkTTYi9Ds](https://cloud.mail.ru/public/gDeN/GkTTYi9Ds)

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**Author:** ![Kapil\_Khanal](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/kapil_khanal/32/304_2.png) [@Kapil\_Khanal](https://community.pix4d.com/u/Kapil_Khanal)\
**Post date:** [December 20, 2021, 5:14pm UTC](https://community.pix4d.com/t/stripes-while-stitching-thermal/20818/2 "2021-12-20T17:14:23Z")

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Hello @syntanjey, I downloaded the image and tried processing it on the Pix4Dmapper. I found out that the reason for the stripe is due to the raw images. There is no uniformity in the intensity in the captured data. From the below screenshot, you can see the intensity is not uniform in the raw captured data in comparison to the beside rows which are causing the stripes on your output.

 ![Thermal internsity difference](https://global.discourse-cdn.com/pix4d/original/2X/7/72d9f25af5cb8ca4a133d275d3bbfdf4f353b323.jpeg)

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**Author:** ![syntanjey](https://avatars.discourse-cdn.com/v4/letter/s/85e7bf/32.png) [@syntanjey](https://community.pix4d.com/u/syntanjey)\
**Post date:** [December 20, 2021, 6:38pm UTC](https://community.pix4d.com/t/stripes-while-stitching-thermal/20818/3 "2021-12-20T18:38:53Z")

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Kapil,

Many thanks for the reply!  
Don’t you know a way how we can calibrate that raw images?