透视投影

This model is deducted from the coordinate's transformation in three-dimension world. It obeys the principle of perspective projection plane transformation.

该模型从一般三维空间坐标变化出发，根据透视投影的原理，进行推导和简化，最终得到自由度为8的运动模型。

Finally, in order to establish the relationship between the omni-directional vision system and the planform display of road environment, a panoramic inversed perspective mapping is proposed for mapping road environment to a full-view planform image, where a more comprehensible view of traffic environment can be provided to the driver.

此外，针智能辅助驾驶中全方位环境感知问题，在多摄像机全景视觉系统的基础上，本文将逆透视投影变换扩展到全景图像中。

Approaches based on projective geometry are often associated with reference points given as prior knowledge.

其中，基於透视投影几何的方法，常与参考点所提供的已知资讯有所关连。

From the concept, it does the exact opposite of a camera: instead of recording an image of the environment by means of an orthographic or perspective projection, projective texture mapping projects an image onto the environment, by using a matrix very similar to the one a camera uses.

从这个概念上，它与摄象机正好相反，不是通过正交或者透视投影来记录环境的图象，而是把图象投射到环境上，通过使用类似于摄象机使用的矩阵。

A real-time method of projective transformation (with less than 1 ms of parameter processing) and an auto-calibration method for camera's main pose (with the time cost less than 0.5 s) were presented.

试验和相应的误差分析结果令人满意（160×120显示分辨率下，能在55 ms内自主做出经透视投影变换的作业机理想移动方向决策，普通难度的相似颜色序列图像的分割误差被控制在了平均5%以内）。

This paper puts forward a method of texture rectification based on perspective projection.

论述了一种基于透视投影的纹理校正方法。

On the network of 3-dimensional perspective projcction transforming and the forest resource DBASE data, the color forest stereogram can be drawn. The problem of the railway linear base will succed in being solved.

通过三维图象的透视投影变换和与森林资源 dbase 数据的联网，可绘制彩色森林立体专业图，并成功地解决了铁路线型库的问题。

The knowledge of vanishing point is an important step for oncoming camera self-calibration and 3D reconstruction. Under perspective projection, lines paralleling each other in space will converge to a point called the vanishing point in the image plane.

在人造建筑物的图像中，存在着许多空间上相互平行的直线，这些直线经过透视投影后将在成像平面上相交于一点，称为消隐点。

In this method the initial values of perspective projective matrix; rotative matrix and translative matrix are calculated from the fundamental matrix, than these matrices are optimized based on the coordinate value of corresponding points.

该方法从基本矩阵计算初始透视投影、旋转和竖直平移变换矩阵，然后以对应点坐标为基础对这些变换矩阵进行优化计算，从而有效地避免了优化计算的局部最小值，而且不过分依赖基本矩阵的计算精度。

This chapter provides a mathematic model for the transformation between two images obtained from the same scene. Based on pin-hole camera model, the relationship between the coordination of two images is discussed using two camera models, and it is proved that geometric relationship of two images obtained from one scene satisfies affine transformation.

论文在透视投影成像模型基础上，用两个不同相机在不同位置对空间中同一点成像，推导出对应点在不同图像中像素坐标之间的解析表示形式，证明了像素坐标之间满足仿射模型，同时分析了图像之间满足仿射模型时应具备的条件。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。