• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>The 28th International Symposium on Remote Sensing of Environment, Mar 27-31, 2000, Cape Town, South Africa >FLOOD BOUNDARY DELINEATION USING RADARSAT DATA
【24h】

FLOOD BOUNDARY DELINEATION USING RADARSAT DATA

机译：使用RADARSAT数据进行洪水边界定界

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

To capture the nature and extend of flood, multi-temporal RADARSAT images have been used for developing a methodology capable of identifying and quantifying of fluctuation in water areas. The model is primarily based on three data layers, of which the first two are the pre-flood and flood-condition data layers and are used for monitoring the nature and extend of flood. Applicability of RADARSAT data for generation of these two data layers has been examined, where the main concern was two separate the water area from the land in a single image. It was found that removal of noise from the image using filtering technique considerably improves the bi-peak distribution of the pixels in the image histogram, and, thereby, it was possible to separate water areas from land using the method of thresh holding or unsupervised clustering. Water area obtain from the RADARSAT image was found to be reasonably accurate when compared with the obtained from Landsat-TM image.
机译：为了捕获洪水的性质和范围，多时相RADARSAT图像已用于开发一种能够识别和量化水域波动的方法。该模型主要基于三个数据层，其中前两个是洪水前和洪水条件数据层，用于监视洪水的性质和范围。已经研究了RADARSAT数据在生成这两个数据层中的适用性，其中主要关注的是在一张图像中将水域与陆地分开。已经发现，使用滤波技术从图像中去除噪声可以显着改善图像直方图中像素的双峰分布，从而可以使用脱粒保持或无监督聚类方法将水域与陆地分离。与从Landsat-TM图像获得的水域相比，从RADARSAT图像获得的水域被认为是相当准确的。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号