透视变换

采用透视变换作为X射线机成像的几何模型，径向畸变作为其畸变模型，借鉴了摄像机标定技术，对X射线机的内外参数分别进行标定。

Perspective transformation is used as its imaging geometrical model , and radial distortion as distortion model . Referring camera calibration , the proposed method calibrates the internal and external parameters of X ray device respectively .

一种基于透视变换的球面纹理映射方法

One Texture mapping Method of the Sphere Based on the Perspective Transformation

使用四维坐标来表示物体的透视变换矩阵，通过对该矩阵进行归一化处理，简化了Z坐标的计算；

Using 4D coordinate to express the convert matrix of perspective , it is predigested to calculate Z coordinate through changing to one .

首先提出了一种基于游程的快速连通域标记算法实现条码粗定位，然后提出了一种基于DataMatrix条码的有效的精确定位方法；并通过反透视变换和双线性插值的方法进行畸变校正处理。

First , a new fast connected component labeling algorithm based on fast run is proposed to achieve barcode rough localization , and then proposes a precise localization method the Data Matrix barcode . Anti-perspective transformation and bilinear interpolation are used for perspective distortion correction .

立体透视变换矩阵中P.Q.R的透视几何意义

The Perspective Geometry Meaning of P.Q.R in Three-Dimensional Perspective Matrix

在计算机绘图中的立体透视变换矩阵中经常使用透视变换参数P.Q.R，它们取值直接影响体的透视效果。

The perspective parameters P.Q.R are very often used in the matrix of perspective transformation in the Computer Graphics .

对在开发过程中遇到的有关DEM数据的裁剪与拼接、图像配准、地表模拟、透视变换、消隐处理、光照和阴影效果以及颜色变换等问题的解决方案和实现方法作了简要的介绍。

The solutions and realizing methods for problems encountered in practice are introduced , such as cutting and the join-together of DEM data , image matching , earth surface simulation , perspective counterchange , black-out processing , effects of illumination and shadow , color change , etc.

透视变换矩阵中透视参数的选择

Selection of Perspective Parameter in Transformation of Matrix by Perspectivity

基于逆透视变换的智能车辆定位技术

Technology of Intelligent Vehicle Location Based on Inverse Projective Transformation

基于凸壳的透视变换下的点模式匹配方法

Convex hull based point pattern matching under perspective transformation

图像校正需要对图像进行透视变换，不可避免会产生欠采样或过采样问题，同时射影变换会引起图像扭曲，造成图像对之间相似性丢失。

Projective transform in the process of image rectification produces under-sampling or over-sampling .

分析了3种透视变换矩阵参数的合理数量。

Analysed the number of parameters of the transformation matrix of perspective projection .

它能从一连串透视变换得出。

It results from a sequence of perspectivities .

高维射影空间中的透视变换

The Homology Transformation in Higher Dimensional Projective Spaces

射线实时成像检测系统透视变换模型

Perspective transformation model for real-time radiography inspection system

透视变换矩阵与三点透视

Perspective Matrix Transformation and Three-Point Perspective Drawing

图形的齐次表示及其透视变换&物体绘图中若干实用数学模型

Figure Homogeneous Presentation and Its Perspective Transformation

仿射透视变换与分形编码

The Affine-Perspective Transformation and Fractal Encoding

以视点及画面位置为初始参数的透视变换矩阵

Perspective Transformation Matrix with the Vision point and the Perspective Plane Position as Its Initial Parameters

根据摄像机透视变换原理建立了包含镜头畸变的双摄像机透视模型。

Based on the principle of perspective transformation , dual cameras mathematical model has been established .

透视变换和透视投影

Perspective transformation and perspective projection

关于透视变换的研究

Discussion About Perspective Transform

首先介绍透视变换和透视纹理映射原理，并简要分析其在自由曲面纹理映射中的应用。

First , the principle of perspective transformation and its application in the texture mapping of free-form surface are presented .

本文详细介绍了有关透视变换、可见表面识别和多边形表面着色等的实用算法。

The practical methods about perspective transformation , visible surface identification and polygon rendering are also presented by the authors .

根据线结构光视觉测头的光学成像特性，论证并建立了基于透视变换的摄像机及物像关系模型。

A camera model based on perspective transformation is analyzed and established according to optical properties of the laser vision probe .

提出了基于链码思想及边界跟踪的分道线检测技术，以及基于车道透视变换模型的相邻分道线段斜率差的车道二维重建技术；

After that , a new kind of technology to rebuild two dimensional lanes is given based on the carriageway clairvoyance transform model .

它丰富了目前计算机绘图中对最简单圆形&点的齐次表示及其透视变换。

The result is that the homogeneous presentation and its perspective transformation for the simplest figure & the point are enriched in computer drawing .

通过建立透视变换总矩阵，代入各类透视投影及正轴测投影的几何条件，推导出这些三维图形的变换矩阵。

Through creating the total matrix of converter of perspective projections , bring the geometry conditions of every perspective projections and normal axonometry projection .

在第二节里阐述了配光光形的计算，其中涉及透视变换理论和层的概念。

In the second section , calculation the light shape is introduced , the concept of layer and the theory of perspective transform are adopted .

利用透视变换标定法对传感器进行标定，成功避免了复杂非线性方程的求解问题。

Complete the sensor calibration using a special way named perspective collineation calibration method . This method successfully avoid the calculation of complex non-linear equations .