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Evolutionary Optimization for Robust Epipolar-Geometry Estimation and Outlier Detection

机译:鲁棒对极几何估计和异常值检测的进化优化

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In this paper, a robust technique based on a genetic algorithm is proposed for estimating two-view epipolar-geometry of uncalibrated perspective stereo images from putative correspondences containing a high percentage of outliers. The advantages of this technique are three-fold: (i) replacing random search with evolutionary search applying new strategies of encoding and guided sampling; (ii) robust and fast estimation of the epipolar geometry via detecting a more-than-enough set of inliers without making any assumptions about the probability distribution of the residuals; (iii) determining the inlier-outlier threshold based on the uncertainty of the estimated model. The proposed method was evaluated both on synthetic data and real images. The results were compared with the most popular techniques from the state-of-the-art, including RANSAC (random sample consensus), MSAC, MLESAC, Cov-RANSAC, LO-RANSAC, StaRSAC, Multi-GS RANSAC and least median of squares (LMedS). Experimental results showed that the proposed approach performed better than other methods regarding the accuracy of inlier detection and epipolar-geometry estimation, as well as the computational efficiency for datasets majorly contaminated by outliers and noise.
机译:在本文中,提出了一种基于遗传算法的鲁棒技术,用于从包含大量异常值的推定对应关系中估计未校准透视立体图像的两视图对极几何。该技术的优点有三方面:(i)使用新的编码和引导采样策略,用进化搜索代替随机搜索; (ii)通过检测一组足够多的内线而无需对残差的概率分布进行任何假设,就可以可靠而快速地估计对极几何形状; (iii)根据估算模型的不确定性确定离群值阈值。在合成数据和真实图像上都对所提出的方法进行了评估。将结果与最新技术(包括RANSAC(随机样本共识),MSAC,MLESAC,Cov-RANSAC,LO-RANSAC,StaRSAC,Multi-GS RANSAC和最小平方中位数)进行比较(LMedS)。实验结果表明,该方法在异常检测和对极几何估计的准确性以及离群值和噪声严重污染的数据集的计算效率方面,比其他方法表现更好。

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