排序方式: 共有11条查询结果,搜索用时 31 毫秒
1.
2.
3.
4.
《International Journal of Digital Earth》2013,6(12):1214-1230
ABSTRACTEarth observation data are typically compressed using general-purpose single-threaded compression algorithms that operate at a fraction of the bandwidth of modern storage and processing systems. We present evidence that recently developed multi-threaded compression codecs offer substantial benefits over widely used single-threaded codecs in terms of compression efficiency when applied to a selection of moderate resolution imaging spectroradiometer (MODIS) datasets stored in the HDF5 format. Compression codecs from the LZ77 and Rice families are shown to vary in efficacy when applied to different MODIS data products, highlighting the need for compression strategies to be tailored to different classes of data. We also introduce LPC-Rice, a new multi-threaded codec, that performs particularly well when applied to time-series data. 相似文献
5.
6.
7.
基于HDF4文件格式的MODIS1B影像数据提取的研究与实现 总被引:11,自引:0,他引:11
介绍了HDF4文件格式和HDF软件库的实现原理,分析了MODIS1B数据资料。在MODIS1B数据中主要有两种数据对象SDS和Vdata.文中详细介绍了访问SDS和Vdata数据的SD接口和VS接口,并通过调用HDF软件库分别实现了提取MODIS1B数据中SDS数据和Vdata数据。 相似文献
8.
遥感数据解析平台建设初探 总被引:2,自引:0,他引:2
简要说明了遥感数据解析平台建设的必要性以及平台大致结构,并以实例阐述了平台数据显示部分的实现方法。 相似文献
9.
MODIS数据存储格式研究 总被引:1,自引:0,他引:1
新型的遥感数据MODIS在近年来得到了比较广泛的应用,该数据有很多优点,在地理科学与资源管理中的应用潜力很大。深入研究该数据采用的HDF文件的数据结构,是开发自主知识产权的遥感图像处理软件的前提工作。本文就:什么是HDF,为什么创造HDF,HDF的高等级应用程序接口,HDF命令行用法和可视化工具,主要的HDF平台,HDF的基本原理,HDF文件格式,用多文件接口对HDF文件的基本操作,确定一个文件是否为HDF文件等问题展开了讨论。 相似文献
10.
The Bowtie effect occurs in MODIS Level 1B data,and is stored in Hierarchical Data Format (HDF)in formal.The Bowtie effect can not be removed before geometry calibration,so that Bowtie effect should be removed before geometry calibration.Modistools,amodule incorporated the ENVI environment in order to process the first level MODIS data,was developed by R&D Scanex,for removing the Bowtie effect.However,the module has two defects:it can be used only to manipulate integer data; and more than 50%data value would b e changed if the Modistools is used to manipolate integer typed MODIS data.We use a non-Ephemeris method to remove the effect,by using the Matlab numerical computing environment. The method has less pixels shifting and value changing problems 相似文献