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THE WORM’S EYE | A NEW LENS FOR URBANIZATION Geospatial Software Design PennDesign Wenhao Wu


Bird’s Eye View

Bird’s Eye View of the Gold Stocks, thedailygold.com


Urbanization in Bird’s Eye View

Guangzhou 1984


Urbanization in Bird’s Eye View

Guangzhou 1995


Urbanization in Bird’s Eye View

Guangzhou 2015


Urbanization in Bird’s Eye View


The Worm’s Eye View

Worm’s Eye View, panoramio.com


Urbanization in the Worm’s Eye View

New Urban Expansion

Urban Area at Year 1

Urban Area at Year 0


Urbanization in the Worm’s Eye View

Urban

Rural

Intensity of Change


Urbanization in the Worm’s Eye View


Tool: Global Computing


Tool: Global Computing other Designer/ Planner ... Conventional Data

Designer/ Planner

Data stored on the cloud

other Designer/ Planner ...

Customized Algorithms


Nightlight

https://code.earthengine.google.com/


Largest Continuous Urban Agglomeration


Large Conurbation Identification


Nightlight Trend

1992

1994

1996

1998

2000

2002

2004

2006

2008

2010

2012

2013


Projected Nightlight Trend


Projected Nightlight Trend


Lansat Imagery

Guangzhou

Foshan


Edge Identification

Guangzhou

Foshan


Industrial Concentration Areas

Guangzhou

Foshan


Urban Expansion Typologies

Percent of Built-up Area in 1KM neighborhood Here the ReduceNeighborhood operation was used to calculate the share of built-up pixels within a 1KM neighborhood of any built-up pixel.

Urban Area

Sub-urban Area

Percent of Open Countryside in 1KM neighborhood Similarly, here the ReduceNeighborhood operation was used to calculate the share of open countryside pixels within a 1KM neighborhood of any open countryside pixel.

Captured Open Space Fringe Open Space

Exterior Open Space


Thank you

Mapping Global Urban Growth with Google Earth Engine  
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