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一种鲁棒的基于两个特征点的深度估计方法
引用本文:钟志光,易建强,赵冬斌.一种鲁棒的基于两个特征点的深度估计方法[J].自动化学报,2005,31(5):693-698.
作者姓名:钟志光  易建强  赵冬斌
作者单位:1.Laboratory of Complex Systems and Intelligence Sciences, Institute of Automation,Chinese Academy of Sciences, Beijing 100080
基金项目:Supported by the National “973” Plan (2003CB517106) and National Natural Science Foundation of P.R.China (60475030)
摘    要:This paper presents a novel depth estimation method based on feature points. Two points are selected arbitrarily from an object and their distance in the space is assumed to be known.The proposed technique can estimate simultaneously their depths according to two images taken before and after a camera moves and the motion parameters of the camera may be unknown. In addition, this paper analyzes the ways to enhance the precision of the estimated depths and presents a feature point image coordinates search algorithm to increase the robustness of the proposed method.The search algorithm can find automatically more accurate image coordinates of the feature points based on their detected image coordinates. Experimental results demonstrate the efficiency of the presented method.

关 键 词:Depth  estimation    image  sequence    motion  vision    mobile  robot  navigation
收稿时间:2004-01-06
修稿时间:2005-07-06

A Robust Two Feature Points Based Depth Estimation Method
ZHONG Zhi-Guang,YI Jian-qiang,ZHAO Dong-bin.A Robust Two Feature Points Based Depth Estimation Method[J].Acta Automatica Sinica,2005,31(5):693-698.
Authors:ZHONG Zhi-Guang  YI Jian-qiang  ZHAO Dong-bin
Affiliation:1.Laboratory of Complex Systems and Intelligence Sciences, Institute of Automation,Chinese Academy of Sciences, Beijing 100080
Abstract:This paper presents a novel depth estimation method based on feature points.Two points are selected arbitrarily from an object and their distance in the space is assumed to be known. The proposed technique can estimate simultaneously their depths according to two images taken before and after a camera moves and the motion parameters of the camera may be unknown.In addition,this paper analyzes the ways to enhance the precision of the estimated depths and presents a feature point image coordinates search algorithm to increase the robustness of the proposed method. The search algorithm can find automatically more accurate image coordinates of the feature points based on their detected image coordinates.Experimental results demonstrate the efficiency of the presented method.
Keywords:Depth estimation  image sequence  motion vision  mobile robot navigation
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