Monitoring Growth of Built-up areas in Indo-Gangetic Plain using Multi-sensor Remote Sensing Data

作者：Chowdhury P K Roy; Maithani S^*

来源：Photonirvachak-Journal of the Indian Society of Remote Sensing, 2010, 38(2): 291-300.

• Human Settlement Index
• OLS
• Urban growth
• NDVI
• Indo-Gangetic plain

This paper provides an approach for rapid and accurate estimation of built-up areas on a per pixel-basis using a integration of two coarse spatial resolution remote sensing data namely DMSP-OLS and MODIS NDVI. The DMSP-OLS data due to its free availability, high temporal resolution and wide swath was used for regional level mapping of built-up areas. However, due to its low radiometric resolution, the built-up areas cannot be estimated accurately from the DMSP-OLS data. In present study, the DMSP-OLS data was combined with MODIS NDVI data to develop an Human Settlement Index (HSI) image, which estimated the fraction of built-up area on a per pixel basis. The resultant HSI image conveys more information than both the individual datasets. These temporal HSI images were then used for monitoring urban growth in Indo-Gangetic plains during the 2001-2007 time period. Thus, the present research can be very useful for regional level monitoring of built-up areas from coarse resolution data within limited time and minimal cost.

• 出版日期2010-6