G-Rep: Gaussian Representation for Arbitrary-Oriented Object Detection. (arXiv:2205.11796v1 [cs.CV])

Arbitrary-oriented object representations contain the oriented bounding box
(OBB), quadrilateral bounding box (QBB), and point set (PointSet). Each
representation encounters problems that correspond to its characteristics, such
as the boundary discontinuity, square-like problem, representation ambiguity,
and isolated points, which lead to inaccurate detection. Although many
effective strategies have been proposed for various representations, there is
still no unified solution. Current detection methods based on Gaussian modeling
have demonstrated the possibility of breaking this dilemma; however, they
remain limited to OBB. …

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