三维投影变换,transformation of three-dimension-projection
1)transformation of three-dimension-projection三维投影变换
1.With the images,position and attitude acquired by some new military scout,thetransformation of three-dimension-projection is applied to the model of geometric rectification,the transform of image coordinate relation can be implemented in different aerial images about the same object and the image automatic rectification is realized.利用某新型军用侦察机试飞所获取的图像、定位和飞行姿态等数据,将三维投影变换引入几何校正模型中,推导出了对于同一地物在不同航片上的图像坐标变换关系,实现了图像的自动校正。
2)2D projection transform二维投影变换
3)3D projection三维投影
1.Through this way,interesting pattens in data will be shown in the3D projections along the path of the tour.本文针对大型关系数据集的高维数据,提出了一种基于聚类指引旅行的三维投影的可视化方法。
4)projection transformation投影变换
1.Application ofprojection transformation and surface transformation in descriptive geometry;投影变换剖析及换面法在画法几何中的应用
2.Application of MAPGISprojection transformation subsystem;MAPGIS投影变换子系统的应用
3.It is necessary to learn the method of usingprojection transformation to train people the ability of spatial imagination.用投影变换来帮助学习者培养空间想象能力是学习中必用的手段和方法。
英文短句/例句
puter Implementation Method and Optimization of Map ProjectionTransformation among Multi-projections;多投影间地图投影变换实现的途径与优化
2.Design and Implement of Raster Data Map Projection Transformation Experimental System;栅格地图投影变换实验系统的设计与实现
3.Raster Dataset projection transform based-on bilinear interpolation approximate grid algorithm双线性插值近似网格的栅格数据投影变换
4.Study on the Application of Surface Method in Solving the Descriptive Geometry Projection Transformation Issue;换面法在解决画法几何学投影变换问题中的应用研究
5.An Application of the Kriging Interpolation Approximate Grid Algorithm in the Raster Data Projection Transformation克里金插值近似网格算法在栅格数据投影变换中的应用
6.A Cache Bounding Box Approach to Speed up Image Projection Transformation in Embedded Systems嵌入式应用中加速图像投影变换的Cache包围盒方法
7.Switching Rule Based on Min-projection Strategy of DC-DC ConvertersDC-DC变换器的最小投影法切换律
8.Eye contour extraction using PCA transform scattering projection基于PCA变换扩散投影的人眼轮廓提取
9.Min-projection-strategy switching rules for DC-DC converters modeled as piecewise linear systemsDC-DC变换器分段线性系统的最小投影法切换律
10.Expressions for Analytical Transformation Between Gauss and Mercator Projections by Complex Numbers高斯投影与墨卡托投影解析变换的复变函数表达式
11.Research on the Generalized Aluthge Transformation and Orthogonal Projections in B(H);关于广义Aluthge变换和正交投影的相关研究
12.Projection on Convex Sets Super-Resolution Image Reconstruction Using Wavelet Transform一种使用小波变换的凸集投影超分辨图像重建
13.Fast Filter Back Projection Algorithm Based on Symmetric Transformation Group基于对称变换群的快速滤波反投影算法
14.Asymmetric watermarking based on Contourlet transform and subspace projection基于Contourlet变换和子空间投影的非对称数字水印
15.Study on Improving the Precision of FTP Based on DLP Projector;提高数字光投影傅里叶变换轮廓术精度的方法研究
16.The Effect of Stamp Duty on Stock Volatility and Turnover: Analysis Based on a Speculative Market;印花税变动对股票波动率和换手率的影响——基于投机市场的分析
17.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
18.Exploration of Projection Distortion to GPS Net and the Method of How to Eliminate the Projection DistortionGPS网投影变形及消去投影变形的方法
相关短句/例句
2D projection transform二维投影变换
3)3D projection三维投影
1.Through this way,interesting pattens in data will be shown in the3D projections along the path of the tour.本文针对大型关系数据集的高维数据,提出了一种基于聚类指引旅行的三维投影的可视化方法。
4)projection transformation投影变换
1.Application ofprojection transformation and surface transformation in descriptive geometry;投影变换剖析及换面法在画法几何中的应用
2.Application of MAPGISprojection transformation subsystem;MAPGIS投影变换子系统的应用
3.It is necessary to learn the method of usingprojection transformation to train people the ability of spatial imagination.用投影变换来帮助学习者培养空间想象能力是学习中必用的手段和方法。
5)projective transform投影变换
1.Deriving homography matrix of planarprojective transform;二维投影变换模型的单应矩阵表示
2.Throughprojective transform method of drawing geometry, a new method to solve parts form error according with the smallest condition is presented.简述了求解零件形状误差—平面度误差的几种方法，并提出了一种新方法，用画法几何学中的投影变换法来求解符合最小条件的平面度误差，并与解析法进行了比较。
6)projection change投影变换
1.This paper suggests that counter thinking andprojection change together with various drawing methods could help to find out the full necessary conditions for the conclusion and answer,and that when the counter path is explored,it would be possible to solve some space questions that are difficult to deal with by the normal thinking method.用投影变换求解空间问题时,应用逆向思维方法与投影变换原理及多种作图方法灵活结合,逆向寻求结论成立、答案存在的充分必要条件,弄清逆向路径,可以解决某些用正向思维方法难以找到求解路径的空间题。
延伸阅读
图形投影变换图形投影变换graphic projection transformation.774.图感更强，看上去更加真实。但透视投影不能真实地反映物体的精确尺寸和形状。尸(x，y，z)(a)尸点的透视投影图3一个方块的两点透视平行投影平行投影的原理示于图4，投影方向为(xD，yD，zD)，则由三角形的相似性可得出投影变换公式为:(b)X方向示意图投影平面 ‘不O 2」 〕飞)二y一石投影方向尸‘(x，，少尸)xo，夕刃，z。)(c)Y方向示意图 图1透视投影尸(x，y，z(2)平行于投影面的平行线的投影仍是平行线;不平行于投影面的平行线的投影汇聚到一个点，这个点称为灭点(见图2)。(a)尸点的平行投影投影方向(xD，知，zD)(b)X方向示意图妮投影严二扮·…:投影方向(x刀，yo，zD)图2不平行于投影面的平行线的透 视投影汇聚于一个灭点(c)Y方向示意图 图4平行投影与坐标轴平行的平行线，在投影面上形成的灭点称作主灭点。根据主灭点的个数，透视投影又分成一点透视、两点透视、三点透视。图3是一个方块的两点透视，投影面与Y轴平行。与下面介绍的平行投影相比，透视投影的深度平行投影具有如下特性:(l)能精确反映图形的实际尺寸;(2)平行线的投影仍是平行线。根据投影与投影面夹角的大小，平行投影可分成正投影和斜投影两类。投影线与投影面垂直的为tuxing touying bianhuan图形投影变换(罗叩hi。p呵ectiont，sfor·mation)一种由高维空间到低维空间的几何变换。在计算机图形学中，通常是指三维空间到二维平面的几何投影变换，即把在三维空间中定义的图形投射到二维平面上。在三维空间中，选择一个点作为投影中心，不经过这个点再定义一个平面作为投影面，从投影中心向投影面引出的射线形成投影线。于是，那些穿过三维几何图形的投影线将与投影面相交，在投影面上形成这个图形的像。这个像叫做三维图形在二维投影面上的投影。将三维空间中的图形投射到二维平面上的这一过程称作投影变换。根据投影中心离投影面的远近，可以将投影分成透视投影和平行投影两大类。透视投影的投影中心到投影面的距离是有限的，而平行投影的投影中心则在无穷远处。因而，平行投影的投影线相互平行，投影线的方向即为投影方向。透视投形透视执毋的原理示于图1，假设投影中心在坐标系的原点，投影面与xy平面平行，距离为d，则其投影变换公式为、一钾、一子“透视投影具有如下性质:(1)投影的大小与图形到投影中心的距离成反比。正投影，否则为斜投影。根据投影面与坐标轴的夹角大小，正投影又有三视图、正等轴测、正二测、正三测之分，而斜投影又有斜等测，斜二测之分。
