DICP: Doppler Iterative Closest Point Algorithm
- URL: http://arxiv.org/abs/2201.11944v1
- Date: Fri, 28 Jan 2022 05:51:07 GMT
- Title: DICP: Doppler Iterative Closest Point Algorithm
- Authors: Bruno Hexsel, Heethesh Vhavle and Yi Chen
- Abstract summary: We present a novel algorithm for point cloud registration for range sensors capable of measuring per-return instantaneous radial velocity: Doppler ICP.
We propose a new Doppler velocity objective function that exploits the compatibility of each point's Doppler measurement and the sensor's current motion estimate.
Our results show a significant performance improvement in terms of the registration accuracy with the added benefit of faster convergence guided by the Doppler velocity gradients.
- Score: 5.934931737701265
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: In this paper, we present a novel algorithm for point cloud registration for
range sensors capable of measuring per-return instantaneous radial velocity:
Doppler ICP. Existing variants of ICP that solely rely on geometry or other
features generally fail to estimate the motion of the sensor correctly in
scenarios that have non-distinctive features and/or repetitive geometric
structures such as hallways, tunnels, highways, and bridges. We propose a new
Doppler velocity objective function that exploits the compatibility of each
point's Doppler measurement and the sensor's current motion estimate. We
jointly optimize the Doppler velocity objective function and the geometric
objective function which sufficiently constrains the point cloud alignment
problem even in feature-denied environments. Furthermore, the correspondence
matches used for the alignment are improved by pruning away the points from
dynamic targets which generally degrade the ICP solution. We evaluate our
method on data collected from real sensors and from simulation. Our results
show a significant performance improvement in terms of the registration
accuracy with the added benefit of faster convergence guided by the Doppler
velocity gradients.
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