Robust Stereo Visual Odometry Using Improved RANSAC-Based Methods for Mobile Robot Localization.
Robust Stereo Visual Odometry Using Improved RANSAC-Based Methods for Mobile Robot Localization.
复制标题
使用改进的基于 RANSAC 的方法进行鲁棒立体视觉里程计进行移动机器人定位
DOI:
10.3390/s17102339
复制
发表时间:
2017-10-13
期刊:
影响因子:
--
通讯作者:
Zhang X
中科院分区:
文献类型:
--
作者:
Liu Y;Gu Y;Li J;Zhang X
In this paper, we present a novel approach for stereo visual odometry with robust motion estimation that is faster and more accurate than standard RANSAC (Random Sample Consensus). Our method makes improvements in RANSAC in three aspects: first, the hypotheses are preferentially generated by sampling the input feature points on the order of ages and similarities of the features; second, the evaluation of hypotheses is performed based on the SPRT (Sequential Probability Ratio Test) that makes bad hypotheses discarded very fast without verifying all the data points; third, we aggregate the three best hypotheses to get the final estimation instead of only selecting the best hypothesis. The first two aspects improve the speed of RANSAC by generating good hypotheses and discarding bad hypotheses in advance, respectively. The last aspect improves the accuracy of motion estimation. Our method was evaluated in the KITTI (Karlsruhe Institute of Technology and Toyota Technological Institute) and the New Tsukuba dataset. Experimental results show that the proposed method achieves better results for both speed and accuracy than RANSAC.
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影响因子:
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发表时间:
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期刊:
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影响因子:
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