Global optimality for point set registration using semidefinite programming
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Global optimality for point set registration using semidefinite programming. / Iglesias, José Pedro; Olsson, Carl; Kahl, Fredrik.
Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition. 2020. p. 8284-8292.Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding
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TY - GEN
T1 - Global optimality for point set registration using semidefinite programming
AU - Iglesias, José Pedro
AU - Olsson, Carl
AU - Kahl, Fredrik
PY - 2020
Y1 - 2020
N2 - In this paper we present a study of global optimality conditions for Point Set Registration (PSR) with missing data. PSR is the problem of aligning multiple point clouds with an unknown target point cloud. Since non-linear rotation constraints are present the problem is inherently non-convex and typically relaxed by computing the Lagrange dual, which is a Semidefinite Program (SDP). In this work we show that given a local minimizer the dual variables of the SDP can be computed in closed form. This opens up the possibility of verifying the optimally, using the SDP formulation without explicitly solving it. In addition it allows us to study under what conditions the relaxation is tight, through spectral analysis. We show that if the errors in the (unknown) optimal solution are bounded the SDP formulation will be able to recover it.
AB - In this paper we present a study of global optimality conditions for Point Set Registration (PSR) with missing data. PSR is the problem of aligning multiple point clouds with an unknown target point cloud. Since non-linear rotation constraints are present the problem is inherently non-convex and typically relaxed by computing the Lagrange dual, which is a Semidefinite Program (SDP). In this work we show that given a local minimizer the dual variables of the SDP can be computed in closed form. This opens up the possibility of verifying the optimally, using the SDP formulation without explicitly solving it. In addition it allows us to study under what conditions the relaxation is tight, through spectral analysis. We show that if the errors in the (unknown) optimal solution are bounded the SDP formulation will be able to recover it.
U2 - 10.1109/CVPR42600.2020.00831
DO - 10.1109/CVPR42600.2020.00831
M3 - Paper in conference proceeding
AN - SCOPUS:85089134708
SP - 8284
EP - 8292
BT - Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition
T2 - 2020 IEEE/CVF Conference on Computer Vision and Pattern Recognition, CVPR 2020
Y2 - 14 June 2020 through 19 June 2020
ER -