Extraction of riverway information based on object-oriented method and analysis of seasonal variations

doi:10.6046/gtzyyg.2014.01.03

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Abstract

Accurately extracting the riverway information could provide the basis for dam construction, flood prevention projects and disaster reduction facilities. Taking Huayuankou section in the lower reaches of the Yellow River as the study area, the authors enhanced the remote sensing images based on an improved fusion method that combines PCA transformation with wavelet transformation. Then the riverway information of four-period images consisting of winter, spring, summer and autumn was extracted using the object-oriented method. The seasonal variations in the river area, the mean river channel width, the river island area and the amount were comparatively studied under the support of GIS. The results show that the integrated remote sensing technique and GIS could directly monitor the seasonal variation characteristics of riverbed with good precision.

Keywords Longmenshan SRTM digital elevation model local relief segmental activity Wenchuan earthquake

TP75

Issue Date: 08 January 2014

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	ZHANG Wei
	YAO Qi
	YANG Jinzhong
	YU Hao
	WU Jianyong

Cite this article:

ZHANG Wei,YAO Qi,YANG Jinzhong, et al. Extraction of riverway information based on object-oriented method and analysis of seasonal variations[J]. REMOTE SENSING FOR LAND & RESOURCES, 2014, 26(1): 13-16.

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https://www.gtzyyg.com/EN/10.6046/gtzyyg.2014.01.03 OR https://www.gtzyyg.com/EN/Y2014/V26/I1/13

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