Problem: horizontal strips on images

Other Products Sequoia
#1

Hi,

I’ve got a problem with my Parrot Sequoia.
The problem is not for RGB images but for all monochrome images (The 4 spectral bands).
I have horizontal strips on almost every images and I would like to know why.
Maybe the phenomenom is a bit less existing on RED and REG bands but it depends on images.

I assume this problem is due to rolling shutter, but i’m not sure…
Could you explain me what is the origin of the problem and how could I solve it?

Here are some examples of images we obtain:

Boutou_B2_Q3_30aout_GRE
Boutou_B2_Q3_30aout_GRE1280×960 333 KB

Boutou_B2_Q3_30aout_NIR
Boutou_B2_Q3_30aout_NIR1280×960 311 KB

Boutou_B2_Q3_30aout_RED
Boutou_B2_Q3_30aout_RED1280×960 331 KB

Boutou_B2_Q3_30aout_REG
Boutou_B2_Q3_30aout_REG1280×960 314 KB

Thanks for your help!

Jean-Baptiste

1 Like
#2

Hi @JBlefebvre

Please make sure to always share the original .tiff images and not some jpeg exports.
Could you reupload your raw images so the metadata can be read ?

I suspect a known problem that should have been fixed in latest releases. Which firmware are you using ?
What is the exposure time ?

Without the raw data it is hard to help you.

#3

Hi,

Ok, sorry, I am going to share original tiff images in the following zip file.
As you will see, the effect is particularly visible on the GREEN image. You can look at the top-right hand corner…

The exposure time on this image is: t= 0.0001846151 s
The ShutterSpeedValue is 0.000184615411100355
Software version: 1.4.1

Thank you for helping!

Sequoia Pics Lefebvre.zip (5.1 MB)

#4

Hi @JBlefebvre
As you can see here, the current firmware version 1.7.1
https://www.parrot.com/fr/support/products/parrot-sequoia

You should update your camera first and see how it effects the problem you are seeing.

#5

Hi,

Okay, I’m going to try that and I will let you know if the problem is getting solved.
Thanks

#6