# vanishing point

vanishing point's translation
###### Examples
• But the lines i drew for the painted chandelier are quite haphazard ? like pickup sticks tossed carelessly onto a floor ? and show no hint of a coherent vanishing point underneath the chandelier
不过我为图中吊灯所画的线却十分散乱无序，就好像把一堆棍子随意扔到地上一样，并没有在吊灯下方产生一个共同的消逝点。
• The algorithm of camera ' s self - calibration is always a important research domain . in this paper by taking advantage of parallel lines and orthogonal lines in architecture as usual , we can calculate the absolute conic image and vanishing points
摄像机自标定的线性算法一直是计算机视觉领域的研究热点，本文利用场景中的两两正交三条直线，计算直线的消失点，进而线性计算绝对二次曲线的像。
• The laws of geometric perspective guarantee that in a concave - mirror projection of a symmetric chandelier onto van eyck ' s support all parallel lines would meet at a vanishing point , just as the image of train track rails meet on the horizon in a photograph
几何透视定理保证，形状对称工整的吊灯经过凹面镜投射到范艾克的屏台时，所有平行线会在消逝点上交会，就好像照片上的火车铁轨会在地平线上交会。
• In this paper , combined with vanishing point geometrical restriction given by the aerial photogrammetric modeling , a method for extracting vertical lines based on the adaptive fuzzy hough transform is presented . then the extracted vertical lines are validated by analyses of window texture
本文结合航空摄影模型给出的灭点几何约束，利用自适应模糊hough变换，提出了一种建筑物垂直边缘检测方法，并用窗户纹理分析技术来验证高层建筑物的垂直边缘。
• In the appliance of object identify and scene analysis , we need comprehend the geometry structure relationship . if camera is not calibration how to use the scene ' s information and vanishing points to accomplish it . then we give two algorithms and introduce the range of apply
在目标识别和场景分析的应用中，我们经常需要了解场景中的空间几何结构关系，如何在摄像机未事先标定的情况下，利用场景中的有关信息，结合图像中的消失点，获得场景中相关几何信息。
• Both methods provide good performance , and the latter is better since it can give a better describing of the residual distribution of matches . in the study of camera self - calibration , firstly , based on discussion of using and the selecting of scene constraints , two new robust vanishing point estimation algorithms are presented . one is based on peransac , and the other is based on clustering
在相机自定标技术的研究中,首先,在讨论利用和选择景物约束的基础上,提出两个新的消失点估计算法:基于peransac的估计算法和基于聚类分析的估计算法,后者在估计精度上优于前者;其次,提出了综合利用空间平行线约束和相机主点位置约束的线性迭代自定标方法,提高了相机自定标的鲁棒性。
• After the theory of the generalized point photogrammetry is introduced , its applications are presented , including computer of image parameter from vanishing point and modelling by single image , determination of image parameters by matching between vector and image , inspection of sheet - metal part and determination of plane pose by contour line matching
论述了广义点摄影测量理论，介绍了其应用，包括由灭点计算影像参数及单像建模，由矢量与影像的匹配确定影像的参数，钣金件的检测与由轮廓线匹配确定飞机的姿态等。
• By taking advantage of parallel lines and orthogonal lines in architecture , the camera internal parameters , rotation and translation can be recovered from a set of un - calibrated images via computing absolute conic and vanishing points . the euclidean 3d model of architecture ( up to a scale factor ) can be recovered too
利用建筑物中常见的平行直线和正交直线等特点，通过绝对二次曲线和消影点等射影几何量的计算，可以从图象中恢复摄像机的内参数、旋转和平移位置，同时恢复建筑物的三维欧氏几何模型（相差一个尺度因子） 。
• ( 4 ) the special geometric restrictions like parallelism and perpendicularity implicated in vanishing elements are deeply studied . in single - view case , the theory is presented to interpret relationship between two planar lines by applying 3d invariants of vanishing points . in two - view case , the method on extraction vanishing point of an arbitrary sp atial line is described , and moreover , the theory is presented to interpret relationship between two elements in 3d space , such as two lines , two planes , line and plane , and so on
( 4 )详细论述了消失元素(消失点、消失直线、消失平面等)所体现的垂直、平行等特殊几何约束关系；对单视图，提出了一种利用消失点列的3d不变量解释平面直线关系的方法；对双视图，提出了利用自共轭三角形和对极几何约束，提取任意直线的消失点的算法，并在此基础了提出了一种利用消失元素的3d不变量解释直线间、直线与平面间、平面间等多种空间几何关系的方法。
• In this paper , we mainly discuss several problems in the field of 3 - d computer vision , which are the algorithms for based on vanishing points to calculate the other geometry structure relationship , the self - calibration and the stratified reconstruction , etc , our main work is as following : ( 1 ) based on vanishing points to calculate geometry structure relationship
本文主要讨论了三维计算机视觉领域中的利用消失点判断空间关系、摄像机自标定、三维分层重构等问题。主要工作如下： ( 1 )利用消失点判断空间关系。
• More examples：  1  2
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