共查询到20条相似文献，搜索用时 46 毫秒
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在GDAL开源栅格空间数据转换库的基础上,利用ObjectARX开发工具,研究Au-toCAD环境中遥感影像数据转换与影像地图可视化的方法。以某市遥感影像为数据源进行实例验证,取得了较好效果,为实现AutoCAD图形数据与遥感影像数据的叠加应用提供了可行的解决方案。 相似文献
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在遥感影像解译过程中,样本准确率极大地影响解译精度,为解决样本采集效率低、精度差等问题,以移动GIS、WEB GIS、空间数据库等技术为基础,研究并建立了从外业采集到内业审核的一整套遥感样本采集系统,为遥感解译工作提供快速、准确的数据支持。 相似文献
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遥感影像数据库引擎设计与实现 总被引：12，自引：3，他引：9
在参考国内外现有资料的基础上,提出一个遥感影像元数据标准草案,并利用该元数据标准对遥感影像数据进行描述:用大型关系数据库对遥感影像数据及其元数据进行一体化管理,实现遥感影像数据的结构化存储;使用XML对遥感影像元数据进行描述,便于实现影像元数据的网上查询与检索,并最终实现遥感影像数据的网络共享。 相似文献
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徐建勋 《资源导刊(河南)》2020,(2):7-7
2019年12月30日,河南省2019年基础性地理国情监测工作全面完成,覆盖全省158个县(市、区),包含遥感影像数据、遥感解译样本数据、地表覆盖数据、地理国情要素数据、元数据等的13 TB数据成果已正式向国家基础地理信息中心汇交。 相似文献
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多源遥感影像共享平台的设计与实现 总被引：3，自引：2，他引：1
在分析不同来源遥感影像共享的基础上,提出了适合多源遥感影像的"影像波段/影像栅格+GridGeome-try+元数据"的基本数据结构。GridGeometry是遥感影像空间信息的抽象,采用GridGeometry可以避免直接对大数据量的遥感影像进行处理;采用ISO 19115元数据标准实现对遥感影像相关信息的描述,并基于XML和数据库技术实现对元数据的表达、存储、解析和处理。最后本文提出了多源遥感影像共享平台的主要体系,并在该体系的基础上实现了多种服务形式,包括:定制的共享网站和符合OGC规范的WMS、WFS和WCS服务等。不同的服务形式能够满足用户的多层次需要,而且为更灵活的服务应用提供了标准接口,在技术上为共享服务的广泛使用提供有力的保障。 相似文献
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近日,由河南省自然资源厅承担,河南省测绘地理信息局组织实施的河南省2019年基础地理国情监测数据成果已正式向国家基础地理信息中心汇交。至此,2019年河南省基础地理国情监测工作全面完成。该项目于2019年6月正式启动,监测范围为全省158个县(市、区),汇交成果包括了遥感影像数据、遥感解译样本数据、地表覆盖数据、地理国情要素数据、元数据以及相关文档资料,数据量约13TB。 相似文献
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在国家重点研发计划和自然科学基金等项目的支持下,本项目成功研发了国土资源典型要素精细化检测与解译,要素变化自动发现与提取技术成果.成果包括任务驱动的空天地多源遥感影像快速获取与协同处理,渐进增长机制驱动的海量样本数据集自动制作,顾及场景-目标-像素层次关系的国土资源典型要素智能识别与解译,语义信息增强的国土资源典型要素变化鲁棒检测等关键技术,解决了国土资源专题要素自动识别不准,国土资源变化发现慢、检测难、查不全等瓶颈难题,在涉及国土资源违法行为监测等领域应用效果显著.该成果获2020地理信息科技进步特等奖.本文主要从国土资源典型要素变化遥感智能监测技术创新、系统应用等方面进行介绍. 相似文献
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遥感影像内容的语义查询算法与应用 总被引：1，自引：1，他引：0
海量遥感影像数据如何进行方便快捷的查询检索与定位,是影像数据存储管理部门所面临的主要问题,同时也是制约影像数据为用户提供更好服务的瓶颈。本文主要分析了当前遥感影像数据库查询检索的几种方式和它们的利弊,进而提出一种在近乎海量的遥感数据中简单、方便、快捷的算法与实现思想。并在已有的影像数据库引擎原型系统上,设计出一种检索查询遥感影像内地物的方法。这种方法以矢量要素的空间信息和属性信息为引导,快速准确的定位地物所在的影像块,为遥感影像的有效管理和应用提供了一种可行的方法。 相似文献
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The ability of cell to modulate the fluidity of plasma membrane was crucial to the survival of microorganism at low temperature. Plasma membrane proteins, fatty acids and carotenoids profiles of Antarctic psychrophilc yeast Rhodotorula sp. NJ298 were investigated at -3 ℃, 0 ℃ and 8 ℃. The results showed that plasma membrane protein content was greater at -3 ℃ than that at 8 ℃, and a unique membrane polypeptide composition with an apparent molecular mass of 94.7 kDa was newly synthesized with SDS-PAGE analysis; GC analysis showed that the main changes of fatty acids were the percentage of unsaturated fatty acids (C18∶ 1 and C18∶ 2) and shorter chain saturated fatty acid (C10∶ 0) increased along with the decrease of the culture temperature from 8 ℃ to -3 ℃; HPLC analysis indicated that astaxanthin was the major functional carotenoids of the plasma membrane, percentage of which increased from 54.6±1.5% at 8 ℃ to 81.9±2.1% at -3 ℃. However the fluidity of plasma membrane which was determined by measuring fluorescence anisotropy was similar at -3 ℃, 0 ℃ and 8 ℃. Hence these changes in plasma membrane's characteristics were involved in the cellular cold-adaptation by which NJ298 could maintain normal plasma membrane fluidity at near-freezing temperature. 相似文献
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《极地研究(英文版)》2014,(4)
正1 Aims and Scope Advances in Polar Science(APS)is an international,peer-reviewed journal jointly sponsored by the Polar Research Institute of China and the Chinese Arctic and Antarctic Administration.APS is a comprehensive academic journal dedicated to presentation of multi-disciplinary achievements in Arctic and Antarctic expeditions and research.Its primary purpose 相似文献
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《中国海洋大学学报(英文版)》2014,(4)
<正>Copyright Submfnion of a roanusatpt inks:that the work described has not been published before(exoept In the form of an abstrW or as part of a published lecture,review,or thesis);that it is not under consideration for publication elsewhere that its publication has been approved by ail 相似文献
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《中国海洋大学学报(英文版)》2014,(6)
<正>The Journal of Ocean University of China(Oceanic and Coastal Sea Research)is a comprehensive academic quarterly sponsored by the Ocean University of China,published one volume per year.This journal is devoted to the publication of the theoretical and applied research results on oceanography and marine fisheries.The fieldcovered include the physical,chemical,biological,geo- 相似文献
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Massimo GRECO 《山地科学学报》2014,(6):1383-1384
<正>The 35th IAHR World Congress was held in Chengdu,China from September 8 to September 132013.The title of the conference was:"The Wise Finds Pleasure in Water:Meandering through Water Science and Engineering".During the congress,1239 papers were presented in 139sessions for oral presentations and 7 sessions for poster presentations.After the Congress,a Committee was appointed to select some of the best papers presented at the Congress for publication,after a 相似文献
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As an important component of the cryosphere,sea ice is very sensitive to the climate change.The study of the sea ice physics needs accurate sea ice thickness.This paper presents an electromagnetic-induction(EM) technique which can be used to measure the sea ice thickness distribution efficiently,and the successful application in Bothnian Bay.Based on the electromagnetic field theory and the electrical properties of sea ice and seawater,EM technique can detect the distance between the instrument and the ice/water interface accurately,than the sea ice thickness is obtained.Contrastive analysis of the apparent conductivity data obtained by EM and the value of drill-hole at same positions allows a construction of a transformable formula of the apparent conductivity to sea ice thickness.The verification of the sea ice thickness calculated by this formula indicates that EM technique is able to get reliable sea ice thickness with average relative error of only 12%.The statistic of all ice thickness profiles shows that the level ice distribution in Bothnian Bay was 0.4-0.6 m. 相似文献
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Based on the hydrographic data in austral summer during the 22nd Antarctic Expedition of China(2005/2006),some features can be found about the northern margin of Emery ice shelf as follows.The heat content in the surface layer(0-50 m) at the eastern end and the western end of the ice-shelf margin is much higher than that at the middle.The upper mixing-layer depth and the seasonal thermocline depth at the middle of the ice-shelf northern margin are much shallower than those at the both ends.However there is much less difference between the middle and the ends in the bottom layer.The remote sensing photos show that the inhomogeneity in the surface-layer water is closely related to the spatial distribution of the floes and polynia in the area. 相似文献
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正Rapid changes of Arctic sea ice cover have been in the focus of the international climate research community in recent years.Quite a few of nations have completed a large number of related surveys and research projects in the Arctic Ocean.Up to now,China has performed six research cruises to the Arctic Ocean resulting in a significant volume of research output.Improved knowledge on the atmospheree-sea ice-ocean interactions in the Arctic is a 相似文献
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