3DVNet: Multi-View Depth Prediction and Volumetric Refinement

• URL: http://arxiv.org/abs/2112.00202v1
• Date: Wed, 1 Dec 2021 00:52:42 GMT
• Title: 3DVNet: Multi-View Depth Prediction and Volumetric Refinement
• Authors: Alexander Rich, Noah Stier, Pradeep Sen, Tobias H\"ollerer
• Abstract summary: 3DVNet is a novel multi-view stereo (MVS) depth-prediction method. Our key idea is the use of a 3D scene-modeling network that iteratively updates a set of coarse depth predictions. We show that our method exceeds state-of-the-art accuracy in both depth prediction and 3D reconstruction metrics.
• Score: 68.68537312256144
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We present 3DVNet, a novel multi-view stereo (MVS) depth-prediction method that combines the advantages of previous depth-based and volumetric MVS approaches. Our key idea is the use of a 3D scene-modeling network that iteratively updates a set of coarse depth predictions, resulting in highly accurate predictions which agree on the underlying scene geometry. Unlike existing depth-prediction techniques, our method uses a volumetric 3D convolutional neural network (CNN) that operates in world space on all depth maps jointly. The network can therefore learn meaningful scene-level priors. Furthermore, unlike existing volumetric MVS techniques, our 3D CNN operates on a feature-augmented point cloud, allowing for effective aggregation of multi-view information and flexible iterative refinement of depth maps. Experimental results show our method exceeds state-of-the-art accuracy in both depth prediction and 3D reconstruction metrics on the ScanNet dataset, as well as a selection of scenes from the TUM-RGBD and ICL-NUIM datasets. This shows that our method is both effective and generalizes to new settings.

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