The Spring Dataset & Benchmark

Spring: L. Mehl, J. Schmalfuss, A. Jahedi, Y. Nalivayko, A. Bruhn — University of Stuttgart

RobustSpring: J. Schmalfuss, V. Oei, L. Mehl, M. Bartsch, S. Agnihotri, M. Keuper, A. Bruhn

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March 13, 2026, 7:45 a.m. — Public

Xunpei Sun et al., "U²Flow: Uncertainty-Aware Unsupervised Optical Flow Estimation". CVPR 2026.

1px total	1px low-detail	1px high-detail	1px matched	1px unmatched	1px rigid	1px non-rigid	1px not sky	1px sky	1px s0-10	1px s10-40	1px s40+
6.323	5.944	66.019	5.381	45.311	3.556	27.257	5.464	19.382	3.407	6.543	30.131

EPE total	EPE low-detail	EPE high-detail	EPE matched	EPE unmatched	EPE rigid	EPE non-rigid	EPE not sky	EPE sky	EPE s0-10	EPE s10-40	EPE s40+
0.608	0.571	6.410	0.456	6.864	0.365	2.441	0.598	0.749	0.322	0.568	3.102

Fl total	Fl low-detail	Fl high-detail	Fl matched	Fl unmatched	Fl rigid	Fl non-rigid	Fl not sky	Fl sky	Fl s0-10	Fl s10-40	Fl s40+
1.878	1.714	27.724	1.386	22.210	1.034	8.264	1.914	1.334	0.669	3.262	8.248

WAUC total	WAUC low-detail	WAUC high-detail	WAUC matched	WAUC unmatched	WAUC rigid	WAUC non-rigid	WAUC not sky	WAUC sky	WAUC s0-10	WAUC s10-40	WAUC s40+
89.322	89.618	42.808	90.117	56.465	91.645	71.751	89.843	81.409	92.010	88.400	69.336