@f0photo @przemek@lhub.social
Before your post, I had never heard of nip2. Seem like an interesting Tool for image manipulation - Thank you for the hint.
I always wanted to write a GUI for my code, so others also can use it, but never found the time - maybe nib2 is the right framework for that - I'll have a closer look at it.

Ivy on tree.
-) full intensity
-) unpolarized component
-) polarized component
-) full intensity, rotating polarizer [animation]
_______________________________________________
Location: Hardwald, Karlsruhe, Germany
Illumination: natural (blue sky)
Date: 25.03.2021

@butdidyoudie
I have written python scripts that process these images, retrieve polarimetric properties and then exports images of the different components (Polarized / unpolarized comonent, or the angle of polarization in false color)

@butdidyoudie I have equipped my camera with a stepper motor which rotates the polarizer. I acutally take 16 images with different polarization angles and the postprocess these 16 images to retrieve the polarization state at each pixel.

JenTower, Jena
a) full intensity, rotating polarizer [animation]
b) unpolarized component
c) polarized component
d) angle of polarization, colorcoded (false color)
_______________________________________________
Location: Jena, Germany
Illumination: natural (blue sky)
Date: 28.09.2020

Unkown black berries on granite.
-) full intensity (no polarizer)
-) unpolarized component
-) polarized component
-) full intensity, rotating polarizer [animation]
_______________________________________________
Location: Clara-Zetkin-Park, Leipzig, Germany
Illumination: natural (blue sky)
Date: 17.03.2021

Unknown wet Kunbbelbohne on grass
a) full intensity (no polarizer)
b) unpolarized component
c) polarized component
d) full intensity, rotating polarizer [animation]
_______________________________________________
Location: Leipzig, Germany
Illumination: natural (cloudy)
Date: 15.03.2021

@przemek@lhub.social
Yes, the false-coloring is also done by my python-scripts. It is a cylcic colormap. Color indicates the polarization angle and the brightness is intensity of the polarized component.

Interesting how the alignment of the gratings also translates into polarization.
-) full intensity
-) polarized component
-) angle of polarization, colorcoded [false-color]
-) full intensity, rotating polarizer [animation]
___________________________________
Location: Bundesverwaltungsgericht, Leipzig, Germany
Illumination: natural (cloudy)
Date: 15.03.2021

@Mopsi
In total I take 16 images with a rotating polarizer. Then I use some python code I wrote to evaluate these images and retrieve (for each pixel and each color-channel):
- the (linearly) polarized component (intensity and direction)
- unpolarized component
- total intensity and
- degree of linear polarization.

The sculpture "Versunkene Riese" in Weimar is made of black stone with smooth surface. Ideal to polarize diffuse light from the cloudy sky.
a) full instensity, rotating polarizer [animation]
b) no polarizer
c) unpolarized comonent only
d) polarized component only
________________________________________________
Location: Frauenplan, Weimar, Germany
Illumination: natural (cloudy)
Date: 27.09.2020

street lamp in Berlin
__________________________________________________
Location: street lamp, Berlin, Germany
Illumination: natural (blue sky)
Date: 22.09.2020

a) polarized component only [gamma-corrected]
b) unpolarized component only
c) full intensity, rotating polarizer [animation]
__________________________________________________
Location: Berlin, Germany
Illumination: natural (cloudy)
Date: 24.09.2020

Völkerschlachtdenkmal, Leipzig.
Stone and concrete do not polarize strongly, but still enough to measure the polarized component.
the cloudy sky shows artefacts and is not polarized.
a) full instensity, rotating polarizer [animation]
b) polarized component only [gamma-corrected]

__________________________________________________
Location: Völkerschlachtdenkmal, Leipzig, Germany
Illumination: natural (cloudy)
Date: 12.03.2021

Snow molten and frozen again on a roof window.
Picture taken from inside towards a blue sky.
[Polarized component; unpolarized component; direction of polarization colorcoded; full intensity, rotating polarizer (animation)]
Location: Karlsruhe, Germany
Illumination: natural (blue sky)
Date: 11.02.2021

Statue in Sevilla
Polarization resolved image taken with rotating linear polarizer

First Image
Polarization Resolved Photography taken with rotating linear polarizer

Social 📸 Photography

A place for your photos and banter. Photog first is our motto


- photog.social doesn't monetize or profit off of your personal information

- Export and leave anytime

- Zero tolerance for harassment or bullying, if you do this your account will be deleted

- All content is ©️ each user and cannot be distributed or used without prior permission by the respective photog.social user

- By using this site you understand that it is not a backup or permanent repository for your information, statuses or media ; additionally, your media was downsized on original upload and is not exportable at this time upon transferring to new instance

- You may support the community by boosting and positively interacting with everyone

- No Loli

- No Bots w/o Approval

- Respect Others



Donations

If you're feeling like supporting the photog.social Mastodon instance monetarily, feel free to choose an option below.

We appreciate it and 💘 the support!

- Patreon

- Liberapay

- PayPal.me