Spatial video health risk mapping in informal settlements: Correcting GPS error

Andrew Curtis, Sandra Bempah, Jayakrishnan Ajayakumar, Dania Mofleh, Lorriane Odhiambo

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


Informal settlements pose a continuing health concern. While spatial methodologies have proven to be valuable tools to support health interventions, several factors limit their widespread use in these challenging environments. One such technology, spatial video, has been used for fine-scale contextualized mapping. In this paper, we address one of the limitations of the technique: the global positioning system (GPS) coordinate error. More specifically, we show how spatial video coordinate streams can be corrected and synced back to the original video to facilitate risk mapping. Past spatial video collections for the Mathare informal settlement of Kenya are used as an illustration as these data had been previously discarded because of excessive GPS error. This paper will describe the bespoke software that makes these corrections possible, and then will go on to investigate patterns in the coordinate error.

Original languageEnglish (US)
Article number33
JournalInternational journal of environmental research and public health
Issue number1
StatePublished - Jan 2019
Externally publishedYes


  • GIS
  • GPS
  • Geonarratives
  • Informal settlement
  • Slum
  • Spatial video
  • Wash

ASJC Scopus subject areas

  • Pollution
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis


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