射影不变量(projective invariant)是射影变换的一种特征。指图形经过任何射影对应(变换)都不变的量。射影变换是射影几何中最重要的几何变换。这种变换的主要特点是保持结合性。例如,点与直线及点与平面的结合性等。交比是射影几何中最基本的不变量,其他不变量都可以用交比表示出来。
The basic idea of our method is to =se intensity segments as primitives for stereo matching. To recover the =epth information of intensity segments, two projective invariants are =ntroduced.
方法的基本思想是对于立体图像,利用密度段元素,引入了两个射影不变量来恢复密度段的深度信息。
参考来源 - 基于射影不变量的三维重构·2,447,543篇论文数据,部分数据来源于NoteExpress
但理论研究表明,只有特定的几何约束结构,才具有射影不变量。
However, researches show that only some special geometric constrained structures possess projective invariants.
实验验证了文中提出的几何约束结构具有不随物体成像视点改变的射影不变量。
The experimental results show that the proposed structure has projective invariant which does not change with the variation of the viewpoints.
交比是和射影变换有关的一个基本不变量,利用交比不变性的计算来揭示场景的本质特征也是计算机视觉研究的一个热点。
To discover intrinsic properties of a scene by using the computation of cross ratio invariance has been one of the most hot research areas in computer vision fields.
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