RECOGNITION OF PLANAR SHAPES FROM PERSPECTIVE IMAGES USING CONTOUR-BASED INVARIANTS

被引：33

作者：

PIZLO, Z

ROSENFELD, A

机构：

[1] UNIV MARYLAND,DEPT PSYCHOL,COLL PK,MD 20742

[2] UNIV MARYLAND,CTR AUTOMAT RES,COLL PK,MD 20742

来源：

CVGIP-IMAGE UNDERSTANDING | 1992年 / 56卷 / 03期

关键词：

D O I：

10.1016/1049-9660(92)90046-6

中图分类号：

TP31 [计算机软件];

学科分类号：

081202 ; 0835 ;

摘要：

This paper presents a new method of recognizing a two-dimensional shape from a single perspective projection image taken from an unknown (three-dimensional) viewpoint. The method is based on quadratic approximations to the effect of the slant of an inverse perspective transformation on angles and lengths. These approximations allow us to define contour-based properties that are invariant under perspective transformation. The method can be used to recognize partially occluded shapes, as well as shapes that are not exactly related by perspective transformations. When a shape is recognized, the method also provides estimates of its tilt and slant. © 1992.

引用

页码：330 / 350

页数：21