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Utilizing publicly available satellite data for urban research: Mapping built-up land cover and land use in Ho Chi Minh City, Vietnam

Urbanization is a fundamental trend of the past two centuries, shaping many dimensions of the modern world. Toguide this phenomenon and support growth of cities that are competitive and sustainably provide needed services,there is a need for information on the extent and nature of urban land cover. However, measuring urbanization ischallenging, especially in developing countries, which often lack the resources and infrastructure needed toproduce reliable data. With the increased availability of remotely sensed data, new methods are available to mapurban land. Yet, existing classification products vary in their definition of“urban”and typically characterizeurbanization in a specific point (or points) in time. Emerging cloud based computational platforms now allow oneto map land cover and land use (LC/LU) across space and time without being constrained to specific classificationproducts. Here, we highlight the potential use of publicly available remotely sensed data for mapping changes inthe built-up LC/LU in Ho Chi Minh City, Vietnam, in the period between 2000 and 2015. We perform a pixel-based supervised image classification procedure in Google Earth Engine (GEE), using two sources of referencedata (administrative data and hand-labeled examples). By fusing publicly available optical and radar data as inputto the classifier, we achieve accurate maps of built-up LC/LU in the province. In today's era of big data, an easilydeployable method for accurate classification of built-up LC/LU has extensive applications across a wide range ofdisciplines and is essential for building the foundation for a sustainable human society.

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Additional Info

Field Value
Author(s) Ran Goldblatt, Klaus Deininger, Gordon Hanson
Last Updated February 11, 2021, 19:32 (UTC)
Created December 8, 2020, 00:27 (UTC)
Stable Link
Date 2018-01-01
Publishing Body Development Engineering
Content Type Publications
Primary Category Land Use & Land Cover
Sub Category LULC
Country Name Vietnam
Location-Region/City Ho Chi Minh
Publishing Organization New Light Technologies