I've been working on automated penguin counting from some fantastic UAV imagery of chinstrap and Macaroni penguins on Zavadovski Island. Here is one of the original image mosaics. - ThreadSky

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ptfretwell.bsky.social • 22 days ago

I've been working on automated penguin counting from some fantastic UAV imagery of chinstrap and Macaroni penguins on Zavadovski Island. Here is one of the original image mosaics.

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ptfretwell.bsky.social•22 days ago

A quick bit analysis later and I have a count of 28,431 penguins

ptfretwell.bsky.social•22 days ago

Abit of spectral analysis to differentiate between chinstraps (green) and Macaronio (pink)

ptfretwell.bsky.social•21 days ago

Notice that the Macaroni penguins nest at higher densities than chinstraps. We can use this to sanity check the classification.

ptfretwell.bsky.social•22 days ago

And finally a kernal analysis to look at density - for this patch the density of Macaroni penguins (inside the pink line) is 1.54 penguins per square metre!

manchotempereur.bsky.social•21 days ago

This project? 🐧

Zavodovski Expedition - British Antarctic Survey
https://www.bas.ac.uk/project/zavodovski-expedition/
@bas.ac.uk @ptfretwell.bsky.social

manchotempereur.bsky.social•21 days ago

Scientists count penguins on remote sub-Antarctic island - British Antarctic Survey
https://www.bas.ac.uk/media-post/scientists-count-penguins-on-remote-sub-antarctic-island/
@bas.ac.uk @ptfretwell.bsky.social

ptfretwell.bsky.social•21 days ago

Yes, it is the data from this one

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