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1.
设计了利用eCognition进行高分辨率卫星影像的车辆检测实验的步骤,首先对目标影像选取关键参数进行多尺度分割;其次利用最小距离分类器进行分类,实验设计中将目标对象主要分为3类,即道路、汽车及其他类;最后以Worldview-1高分辨率卫星影像进行了车辆检测的实验。实验结果表明,所设计的实验过程能达到车辆检测的目的并且精度较高,实验过程的简单直观,可用于交通信息技术及应用专业本科实验教学课程。  相似文献   

2.
结合高分辨率卫星遥感数据在城市电信电力部门中的应用实践,阐述了高分辨率卫星影像在城市建设中的优势、卫星影像数据处理的实践和经验,并展望分析了高分辨率卫星遥感数据在城市交通规划、城市公安交巡警等方面的应用优势争潜力.  相似文献   

3.
正2012年1月9日,我国第一颗自主研发的民用高分辨率立体测绘卫星——资源三号卫星发射升空。它的发射标志着我国测绘水平向前迈进了一大步。2014年1月10日,"国产民用高分辨率立体测图卫星测绘与应用关键技术"获得国家科技进步奖一等奖,成为国家奖台上闪耀的明星。从2004年年底开始研究发展我国测绘卫星的总体构想,到2012年资源三号卫星发射升空,8年春秋方才酝酿诞生了这颗耀眼的新星。作为资源三号卫星工程应用系统总设计师,唐新明亲历了这颗星从构想到雏形、从论证到试  相似文献   

4.
2012年1月9日,我国第一颗自主研发的民用高分辨率立体测绘卫星——资源三号卫星发射升空。它的发射标志着我国测绘水平向前迈进了一大步。  相似文献   

5.
北京一号小卫星4米全色高分辨率影像在全国土地利用变更调查、北京市按季动态变化监测等遥感应用中得到了广泛应用,但其正射影像生产技术方法国内外研究较少,为此,本文以覆盖北京山区的3景不同侧视角北京一号小卫星全色辐射校正影像为数据源,参考不同数量的地面控制点和不同分辨率的数字高程模型,对比分析有理多项式、通用推扫成像和直接线性变换模型的正射纠正精度,总结出了北京一号小卫星4米全色影像的正射纠正技术方法,其正射纠正影像满足1︰2.5万制图比例尺平面位置精度的要求。  相似文献   

6.
高分辨率遥感数据在土地利用更新调查中的应用   总被引:2,自引:1,他引:1  
通过利用高分辨率卫星遥感数据,进行对1/10000比例尺土地利用类型更新调查的实验。论述了应用高分辨率进行土地利用更新调查的基本技术流程,更新信息获取的关键技术。经精度分析说明高分辨率卫星遥感数据,供作土地利用更新调查与制图的基础图件。方法简便、直观动态信息强,完全能满足更新调查图件的精度。  相似文献   

7.
由于高分辨率卫星遥感图像数据量大、空间分辨率高,结构信息复杂,地物同物异谱现象更为突出等等,给专题信息提取技术带来了新的挑战。本研究结合已有的自动提取方法和理论,重点探讨了发现高空间分辨率卫星影像上的光谱知识,并利用这些知识来建立相应的提取方法,来提取土地利用信息,以期为高空间分辨率卫星影像信息的自动提取提供参考。  相似文献   

8.
以QuickBird高分辨率遥感影像作为信息源,用ENVI对影像进行基于像素的分类和面向对象的分类,对分类结果进行目视和精度比较.结果表明,面向对象的分类方法可以有效提高高分辨率遥感影像分类精度.  相似文献   

9.
随着遥感影像分辨率的提高,从高分辨率遥感影像中进行道路网提取,可以为交通信息提供瞬时、准确、可靠的数据,为交通规划提供极大的帮助。提出利用高分辨率遥感影像中道路的光谱信息特征提取路网的方法。考虑到高分辨率遥感影像光谱信息的复杂性,首先对遥感影像光谱信息进行K均值聚类,实现道路类和非道路类分离;同时,获取区域生长的判决条件和判断阈值,然后在道路类上运用区域生长的方法提取路网;最后,运用数学形态学等处理优化路网。实验证明,该方法从高分辨率遥感影像提取路网有较高的准确度和适用性。  相似文献   

10.
作为农业大国,我国在耕地保有量和粮食生产方面均有着可观的成绩,但是,在农业生产科学管理方面,老旧的统计与管理办法已经不能适应新世纪农业现代化生产管理,通过高分遥感技术对农作物生长、耕地面积、土地墒情等进行监测管理已经成为当今国际上公认的最有效的土地监测手段。通过高分一号和高分六号卫星遥感影像在农业生产中的应用,介绍我国高分辨率对地观测系统在现代农业生产监测方面体现出的高效性、可行性和优越性。  相似文献   

11.
The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity.  相似文献   

12.
汉字倒说     
汉字的六书,《说文》对“转注”一类,语焉不详。后世学者提及转注,也仅限于许慎所举出的例字。《汉字例说》一文,作者从转注的角度综合考虑,对部分现代常用字作了分析,跟传统的解释有所不同。希望能抛砖引玉,互相切磋,以推进学术研究。  相似文献   

13.
风的曲线     
Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose.  相似文献   

14.
Given a graph G,a subgraph C is called a clique of G if C is a complete subgraph of G maximal under inclusion and |C|≥2. A clique-transversal set S of G is a set of vertices of G such that S meets all cliques of G. The clique-transversal number, denoted as TC (G), is the minimum cardinality of a clique-transversal set in G. The clique-graph of G, denoted as K (G), is the graph obtained by taking the cliques of G as vertices, and two vertices are adjacent if and only if the corresponding cliques in G have nonempty intersection. Let F be a class of graphs G such that F={G|K(G) is a tree}. In this paper the graphs in F having independent clique-transversal sets are shown and thus TC (G)/|G|≤1/2 for all G ∈ F.  相似文献   

15.
《海外英语》2007,(5):44-45
It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,  相似文献   

16.
一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/  相似文献   

17.
《海外英语》2007,(5):10-11
Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?  相似文献   

18.
钱生钱!     
我们绝大部分人都同意一件事情——我们喜欢金钱。但是你对金钱的喜欢之情足够到让你创立一份事业么?.财富通常被人忽视,主要在于人们不能真正了  相似文献   

19.
Different nations have different social cultures, and the social culture of every nation is developing with the development of the nation, language is greatly influenced by social culture, which enables language to possess national and historical characteristics. Word is the smallest, independent, meaningful linguistic unit of language. It can well reflect the national and historical characteristics. From synchronic aspect, the social and cultural influence on word meaning is mainly embodied in conceptual and associative meanings of word. The incorrespondence of word meaning is a phenomenon that exists in both conceptual and associative meanings of word among different languages. From diachronic aspect, the development of social culture causes some changes of word meaning to some extent. Therefore, social culture plays a key role in vocabulary learning and mastery of a language.  相似文献   

20.
《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.  相似文献   

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