no code implementations • 25 Feb 2019 • Sara Fridovich-Keil, Peter J. Ramadge
We consider the problem of smartphone video-based heart rate estimation, which typically relies on measuring the green color intensity of the user's skin.
Medical Physics Image and Video Processing
no code implementations • NeurIPS 2019 • Rebecca Roelofs, Vaishaal Shankar, Benjamin Recht, Sara Fridovich-Keil, Moritz Hardt, John Miller, Ludwig Schmidt
By systematically comparing the public ranking with the final ranking, we assess how much participants adapted to the holdout set over the course of a competition.
2 code implementations • ICML 2020 • Vaishaal Shankar, Alex Fang, Wenshuo Guo, Sara Fridovich-Keil, Ludwig Schmidt, Jonathan Ragan-Kelley, Benjamin Recht
We investigate the connections between neural networks and simple building blocks in kernel space.
13 code implementations • NeurIPS 2020 • Matthew Tancik, Pratul P. Srinivasan, Ben Mildenhall, Sara Fridovich-Keil, Nithin Raghavan, Utkarsh Singhal, Ravi Ramamoorthi, Jonathan T. Barron, Ren Ng
We show that passing input points through a simple Fourier feature mapping enables a multilayer perceptron (MLP) to learn high-frequency functions in low-dimensional problem domains.
no code implementations • 6 Oct 2021 • Sara Fridovich-Keil, Raphael Gontijo-Lopes, Rebecca Roelofs
We also explore the connections between function frequency and image frequency and find that spectral bias is sensitive to the low frequencies prevalent in natural images.
4 code implementations • CVPR 2022 • Alex Yu, Sara Fridovich-Keil, Matthew Tancik, Qinhong Chen, Benjamin Recht, Angjoo Kanazawa
We introduce Plenoxels (plenoptic voxels), a system for photorealistic view synthesis.
1 code implementation • 9 May 2022 • Vijay Vasudevan, Benjamin Caine, Raphael Gontijo-Lopes, Sara Fridovich-Keil, Rebecca Roelofs
To help contextualize progress on ImageNet and provide a more meaningful evaluation for today's state-of-the-art models, we manually review and categorize every remaining mistake that a few top models make in order to provide insight into the long-tail of errors on one of the most benchmarked datasets in computer vision.
no code implementations • 8 Jul 2022 • Sara Fridovich-Keil, Brian R. Bartoldson, James Diffenderfer, Bhavya Kailkhura, Peer-Timo Bremer
However, there still is no clear understanding of the conditions on OOD data and model properties that are required to observe effective robustness.
2 code implementations • CVPR 2023 • Sara Fridovich-Keil, Giacomo Meanti, Frederik Warburg, Benjamin Recht, Angjoo Kanazawa
We introduce k-planes, a white-box model for radiance fields in arbitrary dimensions.
Ranked #1 on Novel View Synthesis on NeRF
no code implementations • ICCV 2023 • Alexander Mai, Dor Verbin, Falko Kuester, Sara Fridovich-Keil
We present Neural Microfacet Fields, a method for recovering materials, geometry, and environment illumination from images of a scene.
no code implementations • 6 Oct 2023 • Sara Fridovich-Keil, Fabrizio Valdivia, Gordon Wetzstein, Benjamin Recht, Mahdi Soltanolkotabi
We show that this approach reduces metal artifacts compared to a commercial reconstruction of a human skull with metal dental crowns.
1 code implementation • 22 Nov 2023 • Annesha Ghosh, Gordon Wetzstein, Mert Pilanci, Sara Fridovich-Keil
Off-resonance artifacts in magnetic resonance imaging (MRI) are visual distortions that occur when the actual resonant frequencies of spins within the imaging volume differ from the expected frequencies used to encode spatial information.