Favelas 4D
Scalable methods for morphology analysis of informal settlements using terrestrial laser scanning data
Bibliographic Data
| ID | 21247757 |
|---|---|
| Authors | Arianna Salazar-Miranda (0000-0003-4093-9250, Massachusetts Institute of Technology, corresponding author), Arianna Salazar Miranda (Massachusetts Institute of Technology), Guangyu Du (0009-0008-8335-3333, Massachusetts Institute of Technology), Claire Gorman (Massachusetts Institute of Technology), Fábio Duarte (0000-0003-0909-5379, Pontifícia Universidade Católica do Paraná), Washington Fajardo (Massachusetts Institute of Technology), Carlo Ratti (0000-0002-1065-2972, Massachusetts Institute of Technology) |
| Year | 2022 |
| Volume | 49 |
| Issue | 9 |
| Pages | 2345-2362 |
| Publication date | 2022-11-01 |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Environment and Planning B Urban Analytics and City Science (JOURNAL) |
| Journal identifiers | ISSN: 2399-8083 • E-ISSN: 2399-8091 |
| Publisher | SAGE Publications (PUBLISHER • US) |
| DOI | 10.1177/23998083221080174 |
| OpenAlex | W3161364175 |
| Language | EN |
| Citations received | 2 |
| References cited | 38 |
One billion people live in informal settlements worldwide. The complex and multilayered spaces that characterize this unplanned form of urbanization pose a challenge to traditional approaches to mapping and morphological analysis. This study proposes a methodology to study the morphological properties of informal settlements based on terrestrial LiDAR (Light Detection and Ranging) data collected in Rocinha, the largest favela in Rio de Janeiro, Brazil. To measure the morphology of the informal settlement, we propose a series of five metrics related to the geometric characteristics of streets: street width, street elevation, facade heterogeneity, facade density, and street canyon. Our analysis operates at two resolutions, including a global analysis focused on comparing different favela streets to one another and a local analysis unpacking the variation of morphological metrics within streets. We show that our methodology reveals meaningful differences and commonalities in terms of the global morphological characteristics across streets and their local variations, which align with the historical evidence of the favela’s development. Finally, we create morphological maps at high spatial resolution from LiDAR data to inform urban planning assessments of concerns related to crowding, structural safety, air quality, and accessibility in the favela. The methods for this study are automated and can be easily scaled to analyze entire informal settlements, leveraging the increasing availability of inexpensive LiDAR scanners on portable devices such as cellphones
Archaeology · Built environment · Cartography · Civil engineering · Facade · Geography · Human settlement · Informal settlements · Lidar · Remote sensing · Urban Morphology · Urban planning · Urbanization · Computer Science · Impact of Light on Environment and Health · Land Use and Ecosystem Services · Remote Sensing and LiDAR Applications
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| Citations per year | 1 |
|---|---|
| Citation span | 2024 - 2025 (2) |
| Highly cited | No |