Cox's Bazar District - Refugee Camp Structure/Shelter/Infrastructure Footprints April 2021

Summary: This file represents digitization work carried out by UNOSAT and REACH using IOM-NPM drone imagery from April 2021. All fields should be indicative, the 'Type' field indicates whether the structure was thought to be fully build at the time imagery was taken.

Limitations: Digitised areas show covered spaces within the camps. These may be latrines, tubewells, bathing stations, shelters or larger structures (many of which are multiple shelter joined under one continuous roof). This is also the case in previous 'shelter' footprints. Bridges are not included in this dataset, but many can be found in the previous 2019 footprint.

Imagery is known to have horizontal offset of up to a few meters in some areas but is generally accurate. The previous, March 2020 shelter footprint should be considered the most spatially accurate. Work is ongoing by REACH to manually update the footprints to ensure that they accurately represent features in the field. As future iterations and improvements to the footprints are made, additional versions will be released.

The work has not yet been fully ground truthed and is based on expert interpretation of UAV imagery. In addition to relying on imagery interpretation, the footprints are bound by the limitations present in the UAV images that were utilized.

Credits: Processing UNOSAT / REACH (2021) Drone Imagery Inputs, IOM-NPM (April 2021)

Summary:

This file represents digitization work carried out by UNOSAT and REACH using IOM-NPM drone imagery from March 2020.

Limitations: Digitised areas show covered spaces within the camps. These may be latrines, tubewells, bathing stations, shelters or larger structures (many of which are multiple shelter joined under one continuous roof). This is also the case in previous 'shelter' footprints. Bridges are not included in this dataset, but many can be found in the previous 2019 footprint.

The work has not been ground truthed and is based on expert interpretation of UAV imagery. In addition to relying on imagery interpretation, the footprints are bound by the limitations present in the UAV images that were utilized.

Credits: UNOSAT, REACH, 2021 Drone Imagery Inputs, IOM-NPM (March 2020)

Summary: This is the most up-to-date shelter footprint for the Rohingya camps. This file represents digitization work carried out by UNOSAT and REACH (March-May 2019) using IOM-NPM drone imagery from January 2019. Work is currently ongoing and the file is reflective of efforts up to 07 May 2019. As future iterations and improvements to the footprints are made, additional versions will be released.

The original classification scheme developed by UNOSAT was comprised of two structure classes: "Structure" and "Bridge." An area based classification was then performed in which all polygons < 5 m2 were reclassified as " 5 m2 also retained the UNOSATs original classification. Additionally, attribute fields containing camp name information, and the image source information were added.

Limitations: The work has not been ground truthed and is based on expert interpretation of UAV imagery. In addition to relying on imagery interpretation, the footprints are bound by the limitations present in the UAV images that were utilized.

Credits: UNOSAT, REACH, 2019

Archived for reference: shelter footprints based on imagery acquired in February 2018.

Archived for reference: shelter footprints based on imagery acquired in October 2017

Archived for reference: shelter footprints based on imagery acquired in September 2017