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- To improve the accuracy of obtaining the snow cover area from MSS,this paper explores a method of snow cover mapping based on NDVI background field. 为充分精确提取MSS影像的雪盖面积,本文探索一种以NDVI为背景场的雪盖制图新思路。
- Through the three demonstrations of ETM+ and TM,the process of algorithm and the way to build LUT are illuminated in detail.And the accuracy of snow cover mapping of this method is tested by NDSI. 通过ETM+和TM影像的三个例证,详细阐明该算法流程以及查找表的创建,并以NDSI对其雪盖制图进行精度验证。
- snow cover maps 积雪图
- Comparison and Analysis on Methods of Snow Cover Mapping by Using Satellite Remote Sensing Data 卫星遥感雪盖制图方法对比与分析
- Exploration for the Algorithm of Snow Cover Mapping Based on NDVI Background Field 基于NDVI背景场的雪盖制图算法探索
- In this area there is snow cover for six months of the year. 这个地区一年中有六个月被积雪覆盖。
- The snow covered up the fields with a white cloak. 积雪给田野盖上了一件白色的外衣。
- There was a primary periodicity of about 2.8 years for snow cover. 天山山区积雪变化以2.;8a左右的周期为主。
- The thick snow covers the ground. 厚厚的雪覆盖着地面。
- A heavy fall of snow covered the ground. 一场大雪覆盖了大地。
- Dust covered the table. Snow covered the ground. 灰尘布满桌面。雪覆盖了地面
- Vegetation cover maps of three different years (e.g. 1989, 1997 and 2003) were derived from the Landsat TM images for the city of Shanghai. 通过TM影像解译，获取上海市1989、1997和2003年共3个时期的植被分布，构造植被变化轨迹，分析轨迹的空间格局；
- They climbed over the snow covered mountain. 他们爬过雪山。
- Snow covers high mountain peaks. 皑皑的白雪覆盖群山峰。
- Snow covers up too deep to read rhyme. 雪埋的太深，怎么也看不到诗篇。
- Heavy snow covered the whole village. 大雪帲幪了整个村庄。
- Imago 2 , white snow covers the low bungalow. 意象二、 白雪覆盖着矮矮的平房。
- Representing Subgrid Snow Cover Heterogeneities in Regional and Global Models. 区域和全球模式中次网格雪盖不均匀性的表示。
- The reflecting power of the earth is primarily dictated by the proportion of cloud and snow cover. 地球的反射率主要是由云和雪覆盖的部分决定的。
- A land cover map compiled on the basis of Landsat TM images and geochemical data was used to establish a model that provides quantitative data for ecological and environmental evaluation. 通过遥感图像信息增强与提取,结合区域性化探数据的归一化变换等方法,建立了生态地球化学环境指数模型,其最终结果为区域性生态环境评价提供了定量分析数据。
