DELS-MVS: Deep Epipolar Line Search for Multi-View Stereo

• URL: http://arxiv.org/abs/2212.06626v1
• Date: Tue, 13 Dec 2022 15:00:12 GMT
• Title: DELS-MVS: Deep Epipolar Line Search for Multi-View Stereo
• Authors: Christian Sormann (1), Emanuele Santellani (1), Mattia Rossi (2), Andreas Kuhn (2), Friedrich Fraundorfer (1) ((1) Graz University of Technology, (2) Sony Europe B.V.)
• Abstract summary: We propose a novel approach for deep learning-based Multi-View Stereo (MVS) For each pixel in the reference image, our method leverages a deep architecture to search for the corresponding point in the source image directly along the corresponding epipolar line. We test DELS-MVS on the ETH3D, Tanks and Temples and DTU benchmarks and achieve competitive results with respect to state-of-the-art approaches.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We propose a novel approach for deep learning-based Multi-View Stereo (MVS). For each pixel in the reference image, our method leverages a deep architecture to search for the corresponding point in the source image directly along the corresponding epipolar line. We denote our method DELS-MVS: Deep Epipolar Line Search Multi-View Stereo. Previous works in deep MVS select a range of interest within the depth space, discretize it, and sample the epipolar line according to the resulting depth values: this can result in an uneven scanning of the epipolar line, hence of the image space. Instead, our method works directly on the epipolar line: this guarantees an even scanning of the image space and avoids both the need to select a depth range of interest, which is often not known a priori and can vary dramatically from scene to scene, and the need for a suitable discretization of the depth space. In fact, our search is iterative, which avoids the building of a cost volume, costly both to store and to process. Finally, our method performs a robust geometry-aware fusion of the estimated depth maps, leveraging a confidence predicted alongside each depth. We test DELS-MVS on the ETH3D, Tanks and Temples and DTU benchmarks and achieve competitive results with respect to state-of-the-art approaches.

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