文章基本信息

标题：APPLICATION OF COARSE TO FINE LEVEL SET SEGMENTATION IN SATELLITE IMAGES
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作者：DEEPA VARGHESE ; P. SELVARANI ; Dr. V. VAITHIYANATHAN 等
期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2012
卷号：36
期号：2
页码：227-233
出版社：Journal of Theoretical and Applied
摘要：Segmentation of vegetated areas is inevitable in precision agriculture and has high importance in urban area with social and environmental aspects. This paper addresses the segmentation of fused high resolution multispectral satellite images into distinct regions such as vegetation, buildings and barren land. Even though the IHS based fusion of satellite imagery improves the visual interpretation, it results in color distortion which can be nullified using vegetation indexes(VI).The vegetated area can be depicted using high resolution normalized vegetation index and to detect the distribution of vegetated area, soil classes, buildings and barren land. For that the coarse-to-fine level set method is used. Undecimated wavelet transform is adopted to separate focused areas from the background. Homogeneity metric is used to measure the variation inside and outside the contours. The weight distribution ratio is proposed to adaptively tune the relative weight of the features. Based on the homogeneity metric and the weight distribution ratio, a novel energy functional is developed to solve the contour extraction problem and a coarse-to-fine scheme is applied to progressively extract contours in finer scale which also reduces the computational burden
关键词：Contour Extraction; Homogeneity Metric; Level Set Methods; Intensity-Hue-Saturation (IHS) Transform; Vegetation Enhancement