基于QuickBird卫星遥感影像的几何纠正方法对比

QuickBird卫星遥感影像是目前世界上分辨率最高的商业卫星遥感影像(分辨率高达0.61m),遥感影像的几何纠正,是实现影像应用的前提。文章阐述了几何纠正原理与方法,对比地分析了高分辨率卫星影像常用的几何模型———赫尔墨特变换、仿射变换、线性变换和二次多项式变换。实验表明采用基于二次多项式变换,在平坦地区能获得相对较高的纠正精度,具备实际应用的可行性。     

基于规划需求的遥感影像正射纠正处理方法探讨与研究

目前,卫星遥感影像应用于世界上各行各业,有大量的处理卫星影像的工作,特别遥感影像的几何纠正,是实现影像应用的前提.文章阐述了几何纠正原理与方法和二次多项式变换.实验表明采用基于二次多项式变换,在平坦地区无DEM情况下能获得相对较高的纠正精度,具备实际应用的可行性.     

高分辨率遥感影像几何纠正方法的探讨

阐述了共线方程几何纠正的原理,提出了对高分辨率影像利用点纠正模式下附加线约束条件进行影像纠正的方法。     

高分辨率卫星影像几何纠正精度的空间可视化

针对美国高分辨率卫星影像 (IKONOS)几何变形为主的特点 ,提出对几何纠正的精度采用空间可视化的方式来表达 .并以相似变换作为影像纠正的基本模型 ,推导了纠正后任意点精度与控制点精度的关系 ,基于此选择采用空间插值方法 ,插值影像纠正后任意点不同方向上的点位的精度 .在此基础上 ,采用精度可视化的概念对影像纠正的质量加以描述 ,通过一个IKONOS影像加密前后影像纠正的实例说明其应用的方法 ,并获得了一些有益的结论     

基于多比例尺地形图的SPOT5影像几何纠正方法

几何纠正是遥感信息处理中的重要环节,它直接关系到信息提取的精度与实用程度.而现实中,由于地形图绘制年代久远,且保密性较高,往往会出现缺失而不能满足纠正精度的情况.据此本研究在上海地区1∶25 000大比例尺地形图缺失,1∶100 000地形图不能满足SPOT5影像纠正精度的情况下,结合ArcGIS、ENVI软件采用多种例尺地形图对SPOT5影像进行几何纠正,并对纠正精度进行了对比分析.结果表明:将多比例尺地形图综合纠正能使精度控制在1个像元之内,由此确立了现有条件下的最佳方案,为地形图缺失情况下平原地区的几何纠正提供了思路.     

顾及变形特征的栅格影像几何纠正方法

针对扫描得到的栅格影像存在着变形误差问题,采用数学建模方法进行研究,把地图中的公里格网点作为控制点,通过影像整体几何纠正,得到各控制点的变形矢量数据,在此数据基础上实现了地图影像变形特征的可视化;提出了顾及变形特征的选择性构造狄洛尼三角网的影像分块纠正方法,并编程予以实现.实验证明该方法充分顾及影像的形变特征,克服了传统分块纠正方法的缺点,并提高了纠正速度.     

“资源一号”02C卫星影像几何校正方法试验

遥感影像纠正是制约国产卫星数据广泛应用的重要环节。本文对02C数据卫星HR全色数据进行了几何校正试验,总结出具有普遍性适合02C卫星HR全色数据的最优纠正模型和最佳控制点数量,为规模化生产提供参考依据。     

“资源一号”02C卫星影像几何校正方法试验

遥感影像纠正质量是制约国产卫星数据广泛应用的重要环节之一。文章对02C数据卫星HR全色数据进行了几何校正试验,总结出具有普遍性适合02C卫星HR全色数据的最优纠正模型和最佳控制点数量,为规模化生产提供参考依据。     

利用地面控制点进行遥感影像几何纠正的方法探讨

以河南安阳市遥感影像图为例,探讨了利用地面控制点实现遥感影像几何纠正的方法。详细论述了作业过程中如何选取地面控制点,野外测量及内业纠正,最后对纠正后的影像进行了精度评价。     

基于SPOT 5实验的高分辨率遥感影像纠正方法研究

本文结合QuickBird卫星影像提供的RPC文件,对利用有理函数模型进行正射纠正的原理进行分析研究：通过实验分析了经正射纠正后影像点的定位精度,验证了利用有理函数模型进行正射纠正的可行性,指出了的利用该模型的优缺点和进一步需要解决的问题。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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