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Add GNC rotation averaging #759

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@travisdriver travisdriver marked this pull request as draft December 20, 2023 16:39
@travisdriver travisdriver marked this pull request as draft December 20, 2023 16:39
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travisdriver commented Dec 20, 2023

Shonan weighted by # of inlier matches (IW-Shonan)

Huge improvements across the board.

**The CI failed for Place of Fine Arts due to memory issues during the Shonan optimization step (had to increase p_max), but I was able to run it just fine on my desktop and Shonan optimization only took a fraction of a second.

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visual_comparison_dashboard.zip

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@dellaert Is there any other way to enable the Huber loss for Shonan other than the setUseHuber parameter? From what I can tell, the current API doesn't allow us to tune the parameter k for the Huber loss, which defaults to 1.345. Also, how was this default value determined?

@travisdriver travisdriver marked this pull request as ready for review December 21, 2023 00:05
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IW-Shonan w/ Huber Loss

Huber is still not effective.

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visual_comparison_dashboard.zip

- https://arxiv.org/abs/2008.02737
- https://gtsam.org/

Authors: Jing Wu, Ayush Baid, John Lambert
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nit: could you update the author list to your name?

@@ -0,0 +1,238 @@
"""Shonan Rotation Averaging.
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Can we update the module docstring here? Seems stale currently.

_DEFAULT_TWO_VIEW_ROTATION_SIGMA = 1e-1


class CombinedShonanGncRotationAveraging(RotationAveragingBase):
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Can we add a file with unit tests for this class?

_DEFAULT_TWO_VIEW_ROTATION_SIGMA = 1.0


class GncRotationAveraging(RotationAveragingBase):
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Can we add a file with unit tests for this class?

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2 participants