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image     
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  影像
    Support Vector Machines Method of Aerial Image Segmentation
    航空影像分割的支持向量机方法
短句来源
    Theory and Method of Image Location in Support of Satellite Remote Sensing Data Fusion
    支持卫星遥感数据融合的影像定位理论与方法
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    Research on Remote Sensing Image Correction Model in Region of Lack Control Points
    稀少控制点下遥感影像纠正模型研究
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    Integrative Analysis and Evaluation of the Interpretation Features in Remote Sensing Image
    遥感影像解译特征的综合分析与评价
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    Rectification for High Resolution Remote Sensing Image under Lack of Ground Control Points
    缺少控制点的高分辨率卫星遥感影像几何纠正
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  影像的
    Automatic Registration between Remote Sensing Image and Vector Map
    矢量与遥感影像的自动配准
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    Evaluation on the Digitized Copy Image Quality
    论数字化拷贝影像的质量评价
短句来源
    The paper has researched the remote sensing image wavelet packet fusion based on the ARSIS concept.
    研究了基于ARSIS概念的遥感影像的小波包融合方法。
短句来源
    Fusion image wavelet packet details coefficients were selected based on local variance.
    融合影像的高频小波包系数以局部方差为规则进行择优选取。
短句来源
    Fusion experimental results showed that the new method was superior to the IHS in keeping multi-spectral image information,while the information details of high spatial images were improved.
    融合实验结果证明,新方法在对原多光谱影像信息的保持上优于IHS方法,同时在保持高分辨率影像的细节信息上有所改善。
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  影象
    On the Eualuation and Analysis of Image Quality of Rmall Rcale Negatives with Forward Motion Compensation
    前移补偿小比例尺航摄底片影象质量的评定与分析
短句来源
    COMPILATION AND APPLICATION OF GUILIN SATELLITE REMOTE-SENSING IMAGE TOURIST MAP
    桂林卫星遥感影象导游图的编制及应用
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    ICE GEOMORPHOLOGIC INFORMATION EXTRACT FROM SATELLITE IMAGE ON ANTARCTIC AREA AROUND LARSEMANN HILLS
    南极拉斯曼丘陵周围地区卫星影象的冰貌信息提取
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    THE DISCUSSION ON THE METHOD OF THE GEOMETRIC CORRECTION OF REMOTE SEMSING IMAGE
    关于遥感影象几何校正中纠正变换方法的探讨
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    Semiautomatic Extraction of Linear Object form Aerial Image
    航空影象上线状地物的半自动提取
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  映象
    Spatial Data Grid is a technology system which aims at spatial data sharing and cooperating and integrates spatial data into a single image of Spatial Data Grid in the grid environment.
    空间数据网格是网格环境下面向空间数据共享与协同,构造一体化空间数据网格映象的技术体系。
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      image
    Using these monomial bases we prove that the image of the transfer for a general linear group over a finite field is a principal ideal in the ring of invariants.
          
    It is injective and its image coincides with the set ofEx-fixed points inI.
          
    A pattern for an element of a Weyl group is its image under a combinatorially defined map to a subgroup generated by reflections.
          
    The Discrete Wavelet Transform (DWT) is of considerable practical use in image and signal processing applications.
          
    Among all image transforms, the classical (Euclidean) Fourier transform has had the widest range of applications in image processing.
          
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    This paper presents a "Bundle adjustment" method of adjusting analytical aerotriangulation. We proceed in three stages in our work: 1. adjustment with image pairs as units; 2. adjustment with strip as units; 3. adjustment for the whole net. Such a treatment can successfully avoid the problem of the divergence. We adopt in the step of secondary adjustment the method of elimination to eliminate the unknowns of coordinates of ground points at first in order to reduce the storage cell of the matrix of coefficients....

    This paper presents a "Bundle adjustment" method of adjusting analytical aerotriangulation. We proceed in three stages in our work: 1. adjustment with image pairs as units; 2. adjustment with strip as units; 3. adjustment for the whole net. Such a treatment can successfully avoid the problem of the divergence. We adopt in the step of secondary adjustment the method of elimination to eliminate the unknowns of coordinates of ground points at first in order to reduce the storage cell of the matrix of coefficients. In the stage of final adjustment, we adopt the conjugate gradient method to solve the system of equations. In order to enhance the accuracy of adjustment of elevation, we use the unequal weighted adjustment. We can obtain the corrections of the coordinates of each image point directly from the results of each stages previously described. It can be regarded as wrong observation whenever exaggerate corrections occur and these observations should be cancelled. Finally, we also design the function of analogical calculation to research the thoretical precision of the method and the rule of propagation of the accumulation of errors.

    航测区域网《光束法》平差最终是以航测区域为整体按最小二乘法原理进行平差的。整个计算由小平差、中平差及大平差二阶段组成。在小、中平差阶段由于先消去地标未知数,从而大大压缩了存贮单元并加快了计算速度。大平差用共轭斜量法解算方程组。为了提高平差精度采用不等权平差。利用平差求得的象点观测值的改正数,作为自动剔错的依据。最后,为了研究《光束法》的理论精度及航测网中误差积累规律,程序中还设计了模拟计算的功能。

    Random error and personal equation in measuring an astrophotogram are empirically analyzed. It is shown that the random error of the average of four measurements of a stellar image in x or y is about ±1.8μ and the relative personal equation is ±2.8μ, and the total measurement error is about ±3.3μ. Analyzing the personal equation indicates that from time to time values and signs of personal equations are variable and random. Consequently, it is expected that altering the conventional measurement sequence...

    Random error and personal equation in measuring an astrophotogram are empirically analyzed. It is shown that the random error of the average of four measurements of a stellar image in x or y is about ±1.8μ and the relative personal equation is ±2.8μ, and the total measurement error is about ±3.3μ. Analyzing the personal equation indicates that from time to time values and signs of personal equations are variable and random. Consequently, it is expected that altering the conventional measurement sequence can improve the measurement accuracy.

    本文通过实测的方法,对天文底片量度中的偶然误差和人差进行了分析研究。结果表明x或y方向上星像四次测量平均值的偶然误差约为±1.8微米,相对人差为±2.8微米,总的量度误差约为±3.3微米。对人差的分析表明,不同时间段内的人差变化很大,表现有偶然误差的性质,因此改变现有的底片量度程序将会使测量的精度获得一定的提高。

    In this paper,firstly,the authors studied some of the problems concerning laser align- ment,which include:the laws of the image formed by round zone plate,atmospheric effect on laser alignment and main points in designing laser source and detector.Secondly, they described the Laser Alignment Instrument developed by the Engineering Surveying Laboratory in our College and its use in the measurement of the horizontal deformation of large dams.The conclusions are as follows: a)Laser alignment using round zone...

    In this paper,firstly,the authors studied some of the problems concerning laser align- ment,which include:the laws of the image formed by round zone plate,atmospheric effect on laser alignment and main points in designing laser source and detector.Secondly, they described the Laser Alignment Instrument developed by the Engineering Surveying Laboratory in our College and its use in the measurement of the horizontal deformation of large dams.The conclusions are as follows: a)Laser alignment using round zone plate is a better method for alignment survey as compared with other methods. b)Atmospheric effect on the method using round zone plate is smaller than on other- laser alignment methods.But to obtain an accuracy of 10~(-6)on a one-kilometer line,good atmospheric conditions must be chosen. c)In the measurement of the horizontal deformation of large dams,this method pro- -ves to be a good one,in which the time for measurement can be shortened,man power reduced and automatic measurement realized with more ease.

    本文首先探讨了“波带板法”激光准直的若干问题,这包括园形波带板的成象规律、大气折光的影响以及点光源和探测器设计中的主要问题。然后介绍我院研制的准直仪器以及在大坝水平位移观测中的试验和应用。

     
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