1) L2-projection
L~2投影
1.
Based on an orthogonal expansion in a triangle, superconvergence for L2-projection to linear and quadratic triangular elements is studied.
对函数u∈L~2(Ω),其L~2投影u_h=P_hu∈S_m~h满足正交关
2) projection of two dimension
2维投影
3) projected L-M method
投影L-M方法
1.
The nonmonotone projected L-M method for convex constrained nonlinear equations;
凸约束非线性方程组的非单调投影L-M方法
4) two-dimensional locality preserving projections(2DLPP)
2维保局投影
1.
A new face image feature extraction and recognition method based on two-dimensional locality preserving projections(2DLPP) was proposed in this paper.
为了避免这种情况,提出了一种直接基于图像矩阵的人脸识别算法——2维保局投影算法。
5) projection
[英][prə'dʒekʃn] [美][prə'dʒɛkʃən]
投影
1.
Emulate-holographic mathematic treatment of parallel projection applied in mining engineering visualization;
平行投影在矿业工程可视化中仿全息数学处理
2.
New method for multi-attribute decision making based on vague set——projection method;
基于Vague集的多属性决策新方法——投影法
3.
Surveying Projection of Over-head Point & Line Using Intersecting Line of Two Vertical Plane;
垂面交线法悬点与悬线投影测量研究
6) projecting
[英][prə'dʒekt] [美][prə'dʒɛkt]
投影
1.
New 3D line-generating algorithm based on line property and projecting;
基于直线特性和投影原理的三维直线生成算法
2.
The LS channel estimation of OFDM systems can be viewed as a noisy observation of the true channel frequency response,so the noise component can be compressed through subspace projecting.
OFDM系统的LS信道估计可看作真实信道频率响应的一个有噪观察值,因此可采用子空间投影方法对噪声进行压缩。
3.
This paper discusses the method of fast drawing tool′s section projecting picture with the help of computer aided drawing through human computer interaction.
论述了在给出刀具的一个截面的情况下，通过编制人机交互式对话功能的程序文件，运用计算机辅助作图法快速绘出刀具该截面投影图的方法，以期提高图形生成效率和准确度。
补充资料：滤波反投影或卷积反投影
滤波反投影或卷积反投影
影像学术语。当代影像学设备进行影像重建的数学方法。在直接用扫描后所获得的投影轨迹剖面图反投影重建出的CT图像中，无法避免角度卷入条纹伪影(angular aliasing streaks)造成的模糊和失真。这种现象与被扫描层面的空间频率中高频信息的损失有关。使用一种精密的数学方法去除这种模糊。称为“展现”(unfolding)或去卷积(deconvolution)，即在反投影前使用一种数学的“滤器”或卷积函数对原始数据进行修正，然后再进行反投影。两步数学处理过程合称为滤波(修正后)反投影或卷积(后)反投影。这种方法的优点是处理过程简单，速度快，所得图像逼真、清晰。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条