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最近我在测试长时间的FAST-LIO与FAST-LIVO时将同一位置作为起点和终点,fast-livo只观察点云数据,都会发生明显的z轴漂移现象,请问在FAST-LIVO2中会添加回环检测之类的算法去消除这些误差吗? #10

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JJ353 opened this issue Jul 26, 2024 · 2 comments

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@JJ353
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JJ353 commented Jul 26, 2024

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@xuankuzcr
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没有回环。FAST-LIVO2更加关注极其高效、鲁棒和准确的odom,重点是快稳准。针对Z轴飘移问题,LIVO2对每个地面点进行了精准建模,与普通的LiDAR光斑模型相比,我们更多地考虑了光束发散角和平面入射角对noise的影响。另外图像patch的垂直梯度也会对z轴的位移产生约束。经过大量long-term数据的验证,LIVO2可以大大减少Z轴的漂移,使系统能够回到原点。

@redheli
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redheli commented Jul 27, 2024

cool

没有回环。FAST-LIVO2更加关注极其高效、鲁棒和准确的odom,重点是快稳准。针对Z轴飘移问题,LIVO2对每个地面点进行了精准建模,与普通的LiDAR光斑模型相比,我们更多地考虑了光束发散角和平面入射角对noise的影响。另外图像patch的垂直梯度也会对z轴的位移产生约束。经过大量long-term数据的验证,LIVO2可以大大减少Z轴的漂移,使系统能够回到原点。

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