Shading-based refinement on volumetric signed distance functions

Zollhöfer M, Dai A, Innmann M, Wu C, Theobald C, Nießner M, Stamminger M (2015)

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2015

Journal

Acm Transactions on Graphics Association for Computing Machinery (ACM)

Publisher: Association for Computing Machinery

Book Volume: 34

Article Number: 96

Journal Issue: 4

DOI: 10.1145/2766887

Abstract

We present a novel method to obtain fine-scale detail in 3D reconstructions generated with low-budget RGB-D cameras or other commodity scanning devices. As the depth data of these sensors is noisy, truncated signed distance fields are typically used to regularize out the noise, which unfortunately leads to over-smoothed results. In our approach, we leverage RGB data to refine these reconstructions through shading cues, as color input is typically of much higher resolution than the depth data. As a result, we obtain reconstructions with high geometric detail, far beyond the depth resolution of the camera itself. Our core contribution is shading-based refinement directly on the implicit surface representation, which is generated from globally-aligned RGB-D images. We formulate the inverse shading problem on the volumetric distance field, and present a novel objective function which jointly optimizes for fine-scale surface geometry and spatially-varying surface reflectance. In order to enable the efficient reconstruction of sub-millimeter detail, we store and process our surface using a sparse voxel hashing scheme which we augment by introducing a grid hierarchy. A tailored GPU-based Gauss-Newton solver enables us to refine large shape models to previously unseen resolution within only a few seconds.

Authors with CRIS profile

Michael Zollhöfer Chair of Visual Computing (LGDV) Matthias Innmann Chair of Visual Computing (LGDV) Marc Stamminger Chair of Visual Computing (LGDV)

Involved external institutions

Stanford University

United States (USA) (US)

How to cite

APA:

Zollhöfer, M., Dai, A., Innmann, M., Wu, C., Theobald, C., Nießner, M., & Stamminger, M. (2015). Shading-based refinement on volumetric signed distance functions. Acm Transactions on Graphics, 34(4). https://doi.org/10.1145/2766887

MLA:

Zollhöfer, Michael, et al. "Shading-based refinement on volumetric signed distance functions." Acm Transactions on Graphics 34.4 (2015).

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