1) projection space
平行投影空间
2) stereographic projection of vector
全空间赤平投影
1.
The calculation equations for sliding direction,plane intersection points,area,volume,and safety of key blocks of slope are established by stereographic projection of vector and vector calculation.
利用全空间赤平投影和矢量计算对边坡关键块体滑动方向、结构面交点、面积、体积和安全性建立了计算方程。
2.
So,it can use stereographic projection of vector for further theory analysis,such as judging movable block in dam foundation and side slope after determining structure plane which has influence in the stability of project,that can guide the analysis and study of the stability of .
为确定对工程稳定性有影响的结构面后,可应用全空间赤平投影作进一步的理论分析,判断出坝基和边坡中的可动块体,以指导岩体稳定性的分析研究和支护设计工作。
3) Space Projection
空间投影
1.
Make Use of the Space Projection Method to Carry on the Geometric Exact Correction to the Remote Sensing Picture;
利用空间投影法实现遥感图像的几何精纠正
2.
Image matching algorithm based on lifting wavelet transform and improved space projection
基于提升小波变换与改进空间投影结合的图像匹配算法
3.
In this paper, some theory of continuum cartography of remote sensing images is discussed, and the method of space projection is first brought forward to study the problem of continuum cartography of remote sensing images.
试图在遥感图像的连续制图方面做一些理论上的探讨,首次提出利用空间投影方法研究卫星遥感影像的连续制图问题。
4) parallel projection
平行投影
1.
Through analyzing general projection expression, the relationship between the projections is pointed out,and the sufficient and necessary conditions that figure is a parallel projection of the space affine coordinate system are given.
空间仿射坐标系的平行投影问题在计算机图形识别、跟踪目标及三维实体重建中具有重要意义。
2.
In order to generate 3D graphics of moving objects in scientific computing processes,a dynamic parallel projection model was proposed.
为了实现科学计算过程中动态对象的三维图形生成,提出了一个动态平行投影模型;在此基础上,导出了万能平行投影公式;通过对万能平行投影公式的分析,提出了一个新的三维图形旋转算法—投影平面自适应跟随算法(PPAF)。
6) projection to latent structure(PLS)
隐空间投影
1.
To reduce the effect of noise on speech recognition systems,this paper proposed a new model adaptation method using the projection to latent structure(PLS) algorithm.
为了降低语音识别系统中噪声的影响,提出一种利用隐空间投影算法的模型自适应方法。
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