projective invariant

Recognition of License Plate Characters Based on Projective Invariant

基于射影不变量的车牌字符识别

Description of Planar Line Relationship by Projective Invariant of Vanishing Points

利用消失点列的射影不变量描述平面直线关系

A New Geometric Constrained Structure and Its Projective Invariant

一种新的几何约束结构及其射影不变量

Image matching algorithm based on Delaunay triangulation and projective invariant

基于Delaunay三角网的图像匹配算法

Characteristic number is a intrinsic nature of the curve , and it is projective invariant .

因为作为射影不变量，特征数反映曲线的内蕴性质。

A new geometric constrained structure with three planes and five lines and its projective invariant are proposed .

该文提出了一种新的由相邻3平面上5条直线组成的几何约束结构及其所具有的射影不变量。

The experimental results show that the proposed structure has projective invariant which does not change with the variation of the viewpoints .

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。

In which , 3D aspects of object and geometric constrained structures possessing projective invariant are used to construct the hash table .

该方法利用物体的三维形态和物体中具有射影不变量的几何约束结构来构造哈希表。

This thesis analyzed thoroughly the affine invariant features and the projective invariant features of planar objects and a novel method based on the projective invariants was deeply studied . Simulation experiments and performance analysis are both given .

本文深入分析了平面目标的仿射不变特征和射影不变特征，研究了一种新的基于射影不变量的平面目标识别方法，并进行了仿真实验和性能分析。

These descriptors are invariant under translation , rotation , and scale , but variant under affine and projective transformation . Five-point invariant descriptor is a contour presentation method and consists of a series of five-point invariants .

这些描述子在相似变换下，能够保持平移、旋转、尺度不变，但在仿射投影变换情况下则不再保持不变性。五点不变量描述子也是一种描述轮廓的方法。