# Weird shapes in reflectance images

**URL:** <https://community.pix4d.com/t/weird-shapes-in-reflectance-images/34577>\
**Category:** PIX4Dmapper\
**Created:** [June 8, 2026, 1:09pm UTC](https://community.pix4d.com/t/weird-shapes-in-reflectance-images/34577 "2026-06-08T13:09:57Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![hterreau](https://avatars.discourse-cdn.com/v4/letter/h/f07891/32.png) [@hterreau](https://community.pix4d.com/u/hterreau)\
**Post date:** [June 8, 2026, 1:09pm UTC](https://community.pix4d.com/t/weird-shapes-in-reflectance-images/34577/1 "2026-06-08T13:09:57Z")

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Hello,

I tried processing and creating an RGB reflectance image from images captured with a MicaSense RedEdge-P. The flight was conducted at 45 m altitude and 5 m/s, with 90% overlap, over a dense tree plantation.

The image I am sharing is a screenshot of a virtual raster I created in QGIS using my red, green, and blue reflectance bands. There are some strange-looking shapes that are reducing the overall quality of the entire image, even though the pixel resolution is 3 cm.

This area is a close-up of a larger image, and the area I am focusing on does not include any uncalibrated camera images.

[11bis\_report.pdf](https://community.pix4d.com/uploads/short-url/2PltzeccmT62ly9TgxIm4BrPWxk.pdf) (2.1 MB)

 ![image](https://global.discourse-cdn.com/pix4d/original/2X/a/a7f7376e2ff501352a3166417cbd37c3f17f5684.jpeg)

Any guess on what happened?  
Lea