查询词典 rectangular neighborhood

Methods An unsupervised local and global features extraction method was adopted for the localization of facial features of frontal view face image. First, a threshold was used to segment the image into foreground and background, and the nose was localized by considering the symmetry of the face. Second, Harris operator was adopted to detect interest points in a rectangular area covering all the facial features, and then local maximum of the interest points were detected. And finally, Kmeans clustering method was used to cluster the points and obtain the facial features localization.

针对红外正面脸部图像，采用一种无监督的局部和全局的特征提取方法，首先通过阈值法区分出前景和背景，并根据面部特征对称性在前景中确定鼻区；然后在面部确定一个包含所有特征的矩形区域，利用Harris算子在该区域检测出角点，并找出这些点的局部最大值点；最后用Kmeans方法对这些点进行聚类。

Pyramid: Ancient monumental structure constructed of or faced with stone or brick and having a rectangular base and four sloping triangular sides meeting at an apex.

金字塔：用砖、石材料建造或表面覆以砖、石的古代纪念性建筑物，地基为矩形，四面为倾斜的三角形在顶端交会。

Pyramid: Ancient monumental structure construct ed of or faced with stone or brick and having a rectangular base and four sloping triangular sides meeting at an apex.

金字塔：用砖、石材料建造或表面覆以砖、石的古代纪念性建筑物，地基为矩形，四面为倾斜的三角形在顶端交会。

Dendy, Fairweather [17] discussed this method on rectangular polygons.

其中Dendy，Fairweather[17]等人将计算区域推广到矩形多边形区域。

The pelvic plexus in men is located retroperitoneally beside the rectum 5 to 11 cm from the anal verge and forms a fenestrated rectangular plate that is in the sagittal plane with its midpoint located at the level of the tip of the seminal vesicle.

男性盆神经丛在腹膜后肛缘上5至11cm起，走行于直肠后面，矢状位上形成一个有孔的矩形平面，其中点位于精囊腺尖部水平。

FILM GATE This gate may be considered as a long rectangular-type edge gate and it is used for large, thin-walled components to assist in the production of warpage free products.

膜状浇口。这种浇口可以看作为长矩形边缘浇口，用在大的，薄壁的塑件，有助于避免产品的变形翘曲。

The procedure for solving the first boundary condition of passive rectangular metal trough potential distribution.

详细说明：本程序求解第一类边界条件下无源矩形金属槽电位分布。

For investigating the performance of our method, it has been evaluated to simulate a uniform segment of rectangular waveguide. The more lower fictitious return wave loss, which is lower -10 dB than the one yielded from the first order absorbing boundary condition, is illustrated in our method.

通过对一段均匀直波导的计算，验证该算法比使用一阶吸收边界条件的时域有限元法，虚假剩余反射回波平均要低10dB以上，达到了工程计算的要求。

Second order incident boundary condition on fixed incident boundary is derived for numerical simulations, based on the cnoidal or sinusoidal motions of wave maker paddle, which shows that the prediction with second order incident boundary condition is more accurate than the prediction with first order incident boundary condition. 2 The analytical solution for higher-order Boussinesq equations is derived and its applicable range is discussed. 3 A 2-D fully non-linear numerical model using boundary element method is developed to obtain wave forces acting on rectangular obstacle. 4 The three-dimensional fully non-linear waves are studied in a numerical wave tank using finite element method.The studies on the coupled numerical model combined Boussinesq equations with Laplace equation are following.

非耦合非线性波浪计算模型：1 根据造波板做椭圆余弦运动或正弦运动速度，推导出数值模拟波浪水槽时固定入射边界上的二阶波浪入射边界条件，数值计算结果和实验结果的对比表明采用二阶入射边界条件对波面升高的预报比采用一阶入射边界条件对波面升高的预报更为精确；2 推导了波浪水槽造波板做正弦运动所产生波浪的高阶Boussinesq方程摄动展开解析解，讨论了该解析解的适用范围；3 对整个波浪水槽应用边界元方法数值模拟了波浪对物体的非线性作用；4 用有限元法求解三维Laplace方程模拟了三维完全非线性波浪水槽。

A rectangular finite element for laminated plate with bonded and/or embedded piezoelectric sensors and actuators is developed based on the variational principle and the first order shear deformation theory.

基于变分原理和一阶剪切理论，本文建立了一种新的机电耦合矩形有限单元，该单元具有四个节点20个位移自由度，电自由度为单元中的压电铺层层数。

Until now the drug melarsoprol was used to treat patients in the advanced stage of sleeping sickness.

直到现在，美拉胂醇依然被应用在昏睡病晚期病人的治疗中。

The larger gear at center is about 80 microns wide.

大齿轮的中心是在大约80微米宽。