Pubblicato il 23/09/2012Read time: 1 min

Columbia University, the University of Maryland, and the Smithsonian Institution are working on visual recognition software to help identify species from photographs. Leafsnap is the first in a series of electronic field guides being developed to demonstrate this new technology.

[video:http://www.youtube.com/watch?v=nX23TuwP0tI]

This free mobile app helps identify tree species from photographs of their leaves. Leafsnap currently includes the trees of the Northeast and will soon grow to cover the trees of the entire continental United States.

The realization of Leafsnap was possible thanks to the collaboration between Peter Belhumeur (Columbia University), David Jacobs (University of Maryland), and John Kress (Smithsonian Institution).

[video:http://www.youtube.com/watch?v=KCpR4JTEy4c]

The high quality photographs on the website leafsnap.com and in the app were made by the the not-for-profit nature photography group Finding Species.

[video:http://www.youtube.com/watch?v=k02C7p7mQ_c]

Previews of the app:

leafsnap

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The embarrassing Covid

di Stefania Salmaso

Pubblicato il 02/10/2023

There's a certain discomfort in having to talk about Covid-19 again, as demanded by the increase in cases that is also recorded in Italy. The reason, writes epidemiologist Stefania Salmaso, might perhaps be identified in the lack of a transparent process that allows understanding on what basis the health authority formulates recommendations, leading to reliance on pundits.

Image credits: visuals/Unsplash

Epidemiology

“An embarrassing Covid-19”: It could be the title of a short story by Calvino or a rhyme by Rodari, but it's what we're witnessing these days. The increasing frequency of SARS-CoV-2 infections in various areas of the world, including Italy, has forced mainstream media to address it again. However, it's often discussed with a sort of embarrassment and only for the sake of reporting. When discussing possible countermeasures, the discomfort becomes even more apparent.

Name that leaf

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