计算机与现代化

• 算法设计与分析 • 上一篇    下一篇

一种基于随机森林的特征匹配方法

  

  1. 1.河海大学计算机与信息学院,江苏南京211100;2.解放军91960部队,广东汕头515075
  • 收稿日期:2014-01-08 出版日期:2014-04-17 发布日期:2014-04-23
  • 作者简介:作者简介: 隋建凯(1988),男,山东潍坊人,河海大学计算机与信息学院硕士研究生,研究方向:增强现实,模式识别; 刘惠义(1961),男,教授,研究方向:计算机图形学,人工智能; 严烁(1981),女,解放军91960部队工程师,硕士,研究方向:计算机图形学。

 Feature Matching Method Based on Random Forests Classifier

  1.  
    1. College of Computer and Information, Hohai University, Nanjing 211100, China;
    2. Troop 91960 of PLA, Shantou 515075, China
  • Received:2014-01-08 Online:2014-04-17 Published:2014-04-23

摘要:  

摘要: 在特征匹配问题中,匹配速度与精度常常难以同时保证。为了解决该问题,本文提出一种基于随机森林的特征匹配算法。结合SUSurE算法,在尺度空间下提取局部不变特征,构建训练样本集合,对随机森林进行离线训练建立分类模型。在实时匹配中,选取候选特征点对其进行实时分类,完成特征匹配,并与SIFT算法在不同尺度、旋转、视角方面等进行实验对比。结果表明,本文算法在具有良好的实时性情况下,仍有较高的光照适应性和匹配精度。

关键词: 特征匹配, 随机森林, SUSurE, 不变特征, SIFT

Abstract:  

Abstract:  It is difficult to be speedy as well as accurate in feature matching. To overcome the drawback, this paper proposes a feature matching method based on random forest. This method extracts local invariant features in scale space by SUSurE algorithm, then the features and its adjacent pixels are constructed as training samples. In offline, the random forests are trained and a classification model is acquired to deal with the scale, rotation, illumination and perspective changes. In the online stage, the candidate feature points input RF classifier for realtime classification and feature matching. Comparative tests are made between our approach and SIFT. Experimental results show that the method based on RF is generally more robust and faster in the premise of realtime, and is good at accuracy, as well as adjusting to the illumination changes.

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