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In the matching stage, the angle of feature vectors is used as the similarity measure in the high dimensional space directly. This similarity measure is invariant to the linear transformation of feature vectors. Compared with SIFT and normalized correlation, the proposed method needs no primary features such as edges, corners, gradient or shapes which are very unstable in low contrast and low NSR images.

在匹配过程中,以向量之间夹角的大小作为相似度度量,直接利用图像的灰度信息在高维向量空间中考虑图像之间的相似度,克服了在低照度、低信噪比的图像中求边缘、角点、梯度和形状等特征的困难,不受向量模大小以及向量平移的影响,即相似度的计算是线性光照不变的。

This method overcomes the existence of inverse function of the non-linear part and question of the uniqueness in Hammerstein model.

克服了Hammerstein模型中非线性部分的反函数存在性和惟一性的问题。

Because the traditional methods of measuring the energy spectrum adopt the single-channel and multiple-channels which results in needing certain distinguish time and cannot solve the problem of superimposed effect of near pluses, a new method adopting the inverse filter to measure energy spectrum is proposed.

由于传统测量能谱的方法是采用单道、多道的方法,其有一定的分辨时间,并且无法克服相近脉冲的迭加效应,提出了采用逆滤波器法测量能谱的方法。

The proposed controller combines the advantages of neural network and inverse system control, and can compensate the influence of uncertainty and nonlinearity.

该方法结合了神经网络和逆系统控制的优点,能够克服系统中的不确定性和非线性因素。

In the ***, all types and fundamental principles of Radon transform are summarized systematacially. This *** starts from the general linear Radon transform, and then researches how to use the damped least square method to find the solution of the forward transform. However, the least squares smoothing effect will lead to a certain degree of trails in the data of Radon domain, which led to the application\'s limitations. After that the implementation in Radon domain and relative merits of linear Radon transform, parabolic Radon transform and polynomial Radon transform which have time invariance are introduced, the conjugate gradient method that can solve numerical solution is also given. And then the high resolution Randon transform is discussed, it introduces the regularization theory and Bayes principle into inversion, which successfully remove the negative affect caused by discrete Radon transform. Finally, we introduce the optimal weighting similar coefficient Radon transform, which adapt to the time variant quality of hyperbolic Radon transform.

本文系统总结了Radon变换的各种类型及其基本原理,从τ- p变换(即一般线性Radon变换)出发,研究利用阻尼最小二乘平方法求解其正变换,但是最小平方法的平滑作用会导致Radon域数据存在一定程度的拖尾效应,给这种方法的应用带来了很大的局限性;然后先容了具有时不变性的线性、抛物和多项式Radon变换在频率域的实现及其优缺点,给出了求解其数值解的共轭梯度算法;接着讨论了高分辨率Radon变换,它把正则化思想和贝叶斯原理引进到了反演中,很好的克服了离散Radon变换产生的截断效应对结果的不利影响;最后先容了适应双曲Radon变换时变性质的高分辨率最优相似系数加权Radon变换。

Under analysis the principle of the ant colony optimization, an improved ant colony optimization in solving the seismic data inversion problem is proposed.

蚁群算法具有正反馈性、分布式计算和贪婪式启发搜索的特点,克服了传统优化算法的缺陷。

Electrolytic synthesis of calcium iodate was studied,and this method could avoid the disadvantage of chemical method.

采用电化学氧化法制备碘酸钙可以克服化学氧化法存在的问题。

Setting up free Irade area is important for trade liberalization of ASEAN to avoid difficulties of multi—agreements and drawbacks of multi—trade—system of WTO.

建立自由贸易区是东盟贸易自由化的一个重要层面,以绕开WTO多边协议的困难,克服WTO多边贸易体系的种种弊端。建立和完善自由贸易区的法律基础。

Objective: To cure glaucoma avoiding drawbacks of traditional glaucoma operation,and to study the efficiency and safety of CO2 laser sclerectomy with iridectomy.

目的:为了克服现阶段青光眼传统外科手术的一些弊端和验证CO2激光巩膜切除联合虹膜切除术的有效性与安全性。

In the present paper, the finite element method was used to calculate casting iridium crucible temperature field of three samples.

摘 要:为了克服传统Ir坩埚铸造研究中需占用大量Ir和资金的缺点,作者采用有限元方法计算了3种不同尺寸的Ir坩埚在铸造过程中的温度场变化特点。

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Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时,他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

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世纪伟人邓小平的富民思想,是邓小平经济理论体系中的重要组成部分,是我国经济建设根本任务的一个重要方面。