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Using artificial intelligence to map every tree in SF

January 2, 2019 by Bonnee Waldstein

(Note: Glen Parkers have a keen interest in the state of greening in Glen Park and the City. The following is a reprint from Curbed San Francisco)

Machine learning might be able to tally trees that human labor simply can’t

By Adam Brinklow
Lands End.
Photo by M. Ali Khan

In 2017 the San Francisco Planning Department finished a long-anticipated census of trees in San Francisco, and even launched an interactive map for identifying nearby leafy neighbors.

It’s a great tool, but the city only counted street trees on its Open Tree Map. The count didn’t include the likes of public parks, which meant that the majority of trees in San Francisco remained unaccounted for.

A more complete census would take longer—longer perhaps than anyone has time and resources to dedicate to the process of tallying trunks.

Why would anyone really care that much?

Geographer Tim Wallace explains in a Medium article: “Urban trees reduce crime and help stormwater management. […] They make oxygen for breathing, suck up CO₂, provide shade, reduce noise pollution, and just look at them — they’re beautiful.”

And as CityLab points out, “Planting trees has long been a low-tech strategy to fight the effects of climate change and the urban heat island effect. [Trees] help reduce stress, they’ve been linked to the lower obesity rates, and may even curb pedestrian deaths.”

Wallace says that manually counting trees across a city is labor intensive. NASA uses satellite data to try to estimate vegetation canopy at specific locales:

That’s a useful tool, but still not something that can easily provide an actual tree count. So Wallace is pushing Santa Fe, New Mexico-based satellite data company Descartes Labs’ new approach instead, trying to use artificial intelligence and machine learning as an arboreal abacus.

Supposedly, Descartes’ tech can read satellite images and other high-res scans and pick out which green bits are individual trees and which aren’t.

Whether it actually works is hard to suss out at first glance. However, the graphical results are pretty striking; first we see a map made using the city’s street tree census, and then one using Descartes tech to fill in the blanks:

Courtesy Tim Wallace/Descartes Labs

For a look at the complete canopies of other major U.S. cities, go here.

Filed Under: Trees, Uncategorized

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Renew Your Glen Park Association Membership for 2023

Join the Glen Park Association and help promote our community’s interests. Together, we can secure improvement funds, publicize neighborhood concerns and strive to speak as one voice on neighborhood and city issues.

Membership in the Glen Park Association is only $10 annually and can be purchased online.

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Glen Park Association
2 weeks ago
Glen Park Association

Meet one of the Greenway’s most diligent volunteers -- A Townsend Warbler as far as Google knows. Progress in removing invasive oxalis is going well, but work remains! As the sun comes out, please join us at the Glen Park Greenway Native Meadow (between Lippard and Brompton Streets) to carefully remove invasive oxalis plants. Email our oxalis remediation lead, Kathy Keller at greenway@glenparkassociation.org if you can help! ... See MoreSee Less

Meet one of the Greenway’s most diligent volunteers -- A Townsend Warbler as far as Google knows. Progress in removing invasive oxalis is going well, but work remains! As the sun comes out, please join us at the Glen Park Greenway Native Meadow (between Lippard and Brompton Streets) to carefully remove invasive oxalis plants. Email our oxalis remediation lead, Kathy Keller at greenway@glenparkassociation.org if you can help!
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Glen Park Association
2 weeks ago
Glen Park Association

Join us THURSDAY JANUARY 19 at the Glen Park Association Quarterly meeting. We'll be in-person at the Glen Park Rec. Center at 6:30 PM. Our agenda includes:

-- A special presentation from QuitCarbon,
-- Meeting the new owners of @canyonmarket ,
-- Learning more about projects at @sfrecpark & @sfpublichealth, and
-- Electing 2023 GPA officers.

Have you renewed your membership for 2023 yet? Help keep our neighborhood vital by joining today at www.glenparkassociation.org/glen-park-association-membership/
... See MoreSee Less

Join us THURSDAY JANUARY 19 at the Glen Park Association Quarterly meeting. Well be in-person at the Glen Park Rec. Center at 6:30 PM. Our agenda includes:

-- A special presentation from QuitCarbon, 
-- Meeting the new owners of @canyonmarket , 
-- Learning more about projects at @sfrecpark  & @sfpublichealth, and
-- Electing 2023 GPA officers.

Have you renewed your membership for 2023 yet? Help keep our neighborhood vital by joining today at https://www.glenparkassociation.org/glen-park-association-membership/
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Coyote Yipps
Friends of Noe Valley Rec Center
Glen Park Neighborhoods History Project
Open SF History
Sunnyside Conservatory
Sunnyside History
Sunnyside Neighborhood Association
Tramps of San Francisco
Upper Noe Neighbors

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