標題: Practical error analysis of cross-ratio-based planar localization
作者: Chuang, Jen-Hui
Kao, Jau-Hong
Lin, Horng-Horng
Chin, Yu-Ting
資訊工程學系
Department of Computer Science
關鍵字: cross-ratio;error analysis;error ellipse;robot localization
公開日期: 2007
摘要: Recently, more and more computer vision researchers are paying attention to error analysis so as to fulfill various accuracy requirements arising from different applications. As a geometric invariant under projective transformations, cross-ratio is the basis of many recognition and reconstruction algorithms which are based on projective geometry. We propose an efficient way of analyzing localization error for computer vision systems which use cross-ratios in planar localization. By studying the inaccuracy associated with cross-ratio-based computations, we inspect the possibility of using linear transformation to approximate localization error due to 2-D noises of image extraction for reference points. Based on such a computationally efficient analysis, a practical way of choosing point features in an image so as to establish the probabilistically most accurate planar location system using cross-ratios is developed.
URI: http://hdl.handle.net/11536/8035
ISBN: 978-3-540-77128-9
ISSN: 0302-9743
期刊: ADVANCES IN IMAGE AND VIDEO TECHNOLOGY, PROCEEDINGS
Volume: 4872
起始頁: 727
結束頁: 736
顯示於類別:會議論文