Building a Better Urban Picture: Combining Day and Night Remote Sensing Imagery

	Building a Better Urban Picture: Combining Day and Night Remote Sensing Imagery
	Qingling Zhang; Bin Li; David Thau; Rebecca Moore
刊名	REMOTE SENSING
	2015
英文摘要	Urban areas play a very important role in global climate change. There is increasing need to understand global urban areas with sufficient spatial details for global climate change mitigation. Remote sensing imagery, such as medium resolution Landsat daytime multispectral imagery and coarse resolution Defense Meteorological Satellite Program/Operational Linescan System (DMSP/OLS) nighttime light imagery, has provided a powerful tool for characterizing and mapping cities, with advantages and disadvantages. Here we propose a framework to merge cloud and cloud shadow-free Landsat Normalized Difference Vegetation Index (NDVI) composite and DMSP/OLS Night Time Light (NTL) to characterize global urban areas at a 30 m resolution, through a Normalized Difference Urban Index (NDUI) to make full use of them while minimizing their limitations. We modify the maximum NDVI value multi-date image compositing method to generate the cloud and cloud shadow-free Landsat NDVI composite, which is critical for generatinga global NDUI. Evaluation results show the NDUI can effectively increase the separability between urban areas and bare lands as well as farmland, capturing large scale urban extents and, at the same time, providing sufficient spatial details inside urban areas. With advanced cloud computing facilities and the open Landsat data archives available, NDUI has the potential for global studies at the 30 m scale.
收录类别	SCI
原文出处	http://www.mdpi.com/2072-4292/7/9/11887/htm
语种	英语
内容类型	期刊论文
源URL	[http://ir.siat.ac.cn:8080/handle/172644/6880]
专题	深圳先进技术研究院_数字所
作者单位	REMOTE SENSING
推荐引用方式 GB/T 7714	Qingling Zhang,Bin Li,David Thau,et al. Building a Better Urban Picture: Combining Day and Night Remote Sensing Imagery[J]. REMOTE SENSING,2015.
APA	Qingling Zhang,Bin Li,David Thau,&Rebecca Moore.(2015).Building a Better Urban Picture: Combining Day and Night Remote Sensing Imagery.REMOTE SENSING.
MLA	Qingling Zhang,et al."Building a Better Urban Picture: Combining Day and Night Remote Sensing Imagery".REMOTE SENSING (2015).