查询词典 similarity transformation

Cklund transfo- rmation、Inverse scattering method、Darboux transformation、Hirota bilinear method、similarity reduction eta.

cklund变换法、反演散射方法、达布变换法、Hirota双线性方法、相似约化法等。

The results show that the frequency characteristic corresponds with vortex structures; the detail and approximate characteristics of signal are reflected by wavelet coefficient at different scales; the coefficient map of continuous wavelet transformation reveals the self-similarity of the signal.

采用傅里叶变换和小波变换技术，实现了混合层密度脉动信号的频谱与多分辨率分析，结果表明：信号的频域特性与流场的涡结构相对应，不同层面的离散小波系数反映了不同尺度下信号与图像的细节和平滑近似特征，连续小波变换系数图定性的反映了信号的自相似特征。

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。

According to if there exists a one to one mapping between the two point sets to be matched, PPM can be divided into the case of complete matching and the case of incomplete matching. According to transformation type between the two point sets, PPM can be divided into the affine (including Euclidean and similarity) case and the projective case.

点模式匹配问题，根据待匹配的两个点模式是否存在一一对应的匹配关系，可分为完全匹配情形和不完全匹配情形；根据两个点模式之间满足的几何变换关系，可分为仿射变换（包括相似变换和欧氏变换）情形和射影变换情形。

Secondly, robust statistics is introduced to handle the occlusion in computing observation likelihood, and affine transformation based similarity measurement is used to tackle the change of pose of target. 3. To track the fast target, we propose an improved particle filter based visual tracking method.

在两阶段增强粒子滤波跟踪阶段，利用卡尔曼滤波结合最新的观测对目标状态进行更新，通过观测似然的计算实现对目标进入、退出场景以及相互遮挡事件进行处理。

The matching method based on wavelet transformation measures the similarity by using the distance standard at some resolution level.

新方法在某一分辨级水平上进行曲线形状相似性查询和度量的同时也进行维数曲线的度量和匹配。

Clustering algorithm of similarity under the transformation of scaling and shifting is presented.

聚类试验表明，具有相似时间特征的事件流可以被有效地聚集到同一类中。

The contents contained data transformation, similarity match, prediction, classification, clustering, segmentation and visualization of time series.

在综合分析近年来时间序列数据挖掘相关文献的基础上，讨论了时间序列数据挖掘的最新进展，对各种学术观点进行了比较归类，并预测了其发展趋势。

Traditional dimension reduction methods about similarity query introduce the smoothness to data series in some degree, but lead to the disappearance of the important features of time series about non-linearity and fractal.The matching method based on wavelet transformation measures the similarity by using the distance standard at some resolution level.

传统相似性查询的维数约简方法导致时间序列的非线性和分形这些重要特征消失，基于小波变换的匹配方法是通过某一分辨级的距离标准来度量相似性。

By using a similarity transformation, the Navier-Stobes equations in the cylindrical co-ordinates for the steady incompressible flow are reduced to an ordinary non-linear differential equation of the third order.

利用相似转换，将不可压缩流体，定常运动，柱坐标形式的纳非尔-斯托克司方程组简化为一三次非线性常微分方程，运用小参数法及适当边界条件求出此方程的解，结果表明，吸吮或吹注对流动的速度分布，沿流程压力下降和摩擦系数均有显著影响，其影响的大小，依赖于吸吮或吹注的性质，程度及二圆管的相对尺度。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失