Texture analysis and classification of ERS SAR images for map updating of urban areas in the Netherlands
Texture analysis and classification of ERS SAR images for map updating of urban areas in the Netherlands
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DOI：
10.1109/tgrs.2003.814628
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发表时间：
2003-09-01
影响因子：
8.2
通讯作者：
Dekker, RJ
中科院分区：
文献类型：
--
作者：
Dekker, RJ
在单波段、单极化合成孔径雷达(SAR)图像分类中，纹理蕴含着有用的信息。在一项评估这种传感器在城市地区的地图更新能力的研究中，对一些现代纹理测量进行了调查。其中包括直方图度量、小波能量、分维、空隙和半方差函数。后者被选为众所周知的灰度级共现特征家族的替代。使用欧洲遥感卫星1号(ERS-1)合成孔径雷达图像研究的区域是荷兰鹿特丹和海牙周围的大都市。该地区可以被描述为一个规划良好的分散的城市区域，有居民区、工业、温室、牧场、耕地和一些森林。要更新的数字地图是1：25万矢量地图(VMap1)。由于大多数纹理分布不是正态分布，本研究基于非参数可分离性度量和分类技术进行。结论是纹理提高了分类精度。表现最好的度量是平均强度(实际上没有纹理)、方差、加权等级填充比和半方差函数，但不同类别的准确性有所不同。尽管有所改进，但总体分类精度表明，ERS-1的土地覆盖信息内容仍不尽如人意。
In single-band and single-polarized synthetic aperture radar (SAR) image classification, texture holds useful information. In a study to assess the map-updating capabilities of such sensors in urban areas, some modern texture measures were investigated. Among them were histogram measures, wavelet energy, fractal dimension, lacunarity, and semivariograms. The latter were chosen as an alternative for the well-known gray-level cooccurrence family of features. The area that was studied using a European Remote Sensing Satellite 1 (ERS-1) SAR image was the conurbation around Rotterdam and The Hague in The Netherlands. The area can be characterized as a well-planned dispersed urban area with residential areas, industry, greenhouses, pasture, arable land, and some forest. The digital map to be updated was a 1: 250 000 Vector Map (VMap1). The study was done on the basis of non-parametric separability measures and classification techniques because most texture distributions were not normal. The conclusion is that texture improves the classification accuracy. The measures that performed best were mean intensity (actually no texture), variance, weighted-rank fill ratio, and semivariogram, but the accuracies vary for different classes. Despite the improvement, the overall classification accuracy indicates that the land-cover information content of ERS-1 leaves something to be desired.