Slum Development in India by Sulochana Shekhar

Author:Sulochana Shekhar
Language: eng
Format: epub
ISBN: 9783030722920
Publisher: Springer International Publishing

4.4.1 Slum Map Preparation

Based on the slum ontology, slums were identified (both visual and object-based analysis) and a slum map was prepared (Fig. 4.10). The same was validated with the UFS (Urban Frame survey) map. The UFS maps were purchased from the National Sample Survey Organisation, Hubli. These maps were used by the enumerators at the time of collection of census data, and are thus maps of the actual enumeration blocks.

Fig. 4.10Slum map

4.5 Validation using Enumeration Blocks

14 UFS maps were purchased from NSSO, and they were compared with Google Earth maps. Slum enumeration block maps are prepared based on the field observation. This will include not only notified and non-notified slums but also identified slums based on the census definition. Hence, validating with the enumeration block map is very important to assess the reliability of the map prepared by this method. The following snapshots show the matching of UFS maps with Google Earth display for initial understanding and later on the same was compared with the slum map (Figs. 4.11 and 4.12).

Fig. 4.11a Matching UFS map with Google Earth image. Source Urban Frame Survey maps. b Google Earth image matching with UFS map. Source Google Earth

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