Papers › Rethinking Depth Estimation for Multi-View Stereo: A Unified Representation

Rethinking Depth Estimation for Multi-View Stereo: A Unified Representation

5 Jan 2022CVPR 2022 1arXiv:2201.01501archive 2025-07-28

Rui Peng, Rongjie Wang, Zhenyu Wang, Yawen Lai, Ronggang Wang

Depth estimation is solved as a regression or classification problem in existing learning-based multi-view stereo methods. Although these two representations have recently demonstrated their excellent performance, they still have apparent shortcomings, e.g., regression methods tend to overfit due to the indirect learning cost volume, and classification methods cannot directly infer the exact depth due to its discrete prediction. In this paper, we propose a novel representation, termed Unification, to unify the advantages of regression and classification. It can directly constrain the cost volume like classification methods, but also realize the sub-pixel depth prediction like regression methods. To excavate the potential of unification, we design a new loss function named Unified Focal Loss, which is more uniform and reasonable to combat the challenge of sample imbalance. Combining these two unburdened modules, we present a coarse-to-fine framework, that we call UniMVSNet. The results of ranking first on both DTU and Tanks and Temples benchmarks verify that our model not only performs the best but also has the best generalization ability.

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Tasks

3D ReconstructionClassificationDepth EstimationDepth Predictionregression

Results from the paper archive 2025-07-28

TaskDatasetModelMetricValueRank at snapshotLeaderboardReport
3D Reconstruction DTU UniMVSNet Acc 0.352 #11 of 24 Archive leaderboard report
3D Reconstruction DTU UniMVSNet Comp 0.278 #11 of 24 Archive leaderboard report
3D Reconstruction DTU UniMVSNet Overall 0.315 #11 of 24 Archive leaderboard report

Ranks are positions in the archive's leaderboards as they stood at the 2025-07-28 snapshot. Results published since then are not among these rows, so a rank here is not a current standing.

Methods

Focal Loss

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