Improvement of the spatial resolution of an optical 3-D measurement procedure

被引：21

作者：

Albrecht, P ^{[1
]}

Michaelis, B ^{[1
]}

机构：

[1] Otto Von Guericke Univ, Inst Measurement Technol & Elect, D-39016 Magdeburg, Germany

来源：

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 1998年 / 47卷 / 01期

关键词：

cameras; charge coupled devices; image processing; measurement; measurement errors; optical distance measurement; shape measurement; stereo vision;

D O I：

10.1109/19.728810

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Three-dimensional (3-D) surface coordinates can be calculated by stereoscopic methods front the images produced by two CCD cameras. Classical procedures based on matching algorithms cause systematic errors at highly curved surfaces or at steps in surfaces, An alternative procedure is proposed in this paper, Instead of correlating areas in two images, grey-scale values of single pixels obtained from a number of different images taken in succession are correlated. Thus, it is possible to achieve higher spatial resolution and to reduce systematic errors at "problem surfaces."

引用

页码：158 / 162

页数：5