Search Results for author: Alex Evans

Found 15 papers, 6 papers with code

Compact Neural Graphics Primitives with Learned Hash Probing

no code implementations28 Dec 2023 Towaki Takikawa, Thomas Müller, Merlin Nimier-David, Alex Evans, Sanja Fidler, Alec Jacobson, Alexander Keller

Neural graphics primitives are faster and achieve higher quality when their neural networks are augmented by spatial data structures that hold trainable features arranged in a grid.

Quantization

BundleSDF: Neural 6-DoF Tracking and 3D Reconstruction of Unknown Objects

1 code implementation CVPR 2023 Bowen Wen, Jonathan Tremblay, Valts Blukis, Stephen Tyree, Thomas Muller, Alex Evans, Dieter Fox, Jan Kautz, Stan Birchfield

We present a near real-time method for 6-DoF tracking of an unknown object from a monocular RGBD video sequence, while simultaneously performing neural 3D reconstruction of the object.

3D Object Tracking 3D Reconstruction +5

Parallel Inversion of Neural Radiance Fields for Robust Pose Estimation

1 code implementation18 Oct 2022 Yunzhi Lin, Thomas Müller, Jonathan Tremblay, Bowen Wen, Stephen Tyree, Alex Evans, Patricio A. Vela, Stan Birchfield

We present a parallelized optimization method based on fast Neural Radiance Fields (NeRF) for estimating 6-DoF pose of a camera with respect to an object or scene.

Pose Estimation

A primer on perpetuals

no code implementations7 Sep 2022 Guillermo Angeris, Tarun Chitra, Alex Evans, Matthew Lorig

When asset prices can jump and the volatility process is independent of the underlying risky assets, we derive an explicit replication strategy for the short side of a perpetual contract.

Variable Bitrate Neural Fields

1 code implementation15 Jun 2022 Towaki Takikawa, Alex Evans, Jonathan Tremblay, Thomas Müller, Morgan McGuire, Alec Jacobson, Sanja Fidler

Neural approximations of scalar and vector fields, such as signed distance functions and radiance fields, have emerged as accurate, high-quality representations.

RTMV: A Ray-Traced Multi-View Synthetic Dataset for Novel View Synthesis

no code implementations14 May 2022 Jonathan Tremblay, Moustafa Meshry, Alex Evans, Jan Kautz, Alexander Keller, Sameh Khamis, Thomas Müller, Charles Loop, Nathan Morrical, Koki Nagano, Towaki Takikawa, Stan Birchfield

We present a large-scale synthetic dataset for novel view synthesis consisting of ~300k images rendered from nearly 2000 complex scenes using high-quality ray tracing at high resolution (1600 x 1600 pixels).

Novel View Synthesis

Instant Neural Graphics Primitives with a Multiresolution Hash Encoding

16 code implementations16 Jan 2022 Thomas Müller, Alex Evans, Christoph Schied, Alexander Keller

Neural graphics primitives, parameterized by fully connected neural networks, can be costly to train and evaluate.

3D Reconstruction 3D Shape Reconstruction +2

Replicating Monotonic Payoffs Without Oracles

no code implementations26 Nov 2021 Guillermo Angeris, Alex Evans, Tarun Chitra

In this paper, we show that any monotonic payoff can be replicated using only liquidity provider shares in constant function market makers (CFMMs), without the need for additional collateral or oracles.

Optimal Fees for Geometric Mean Market Makers

no code implementations1 Apr 2021 Alex Evans, Guillermo Angeris, Tarun Chitra

Trading fees have been proposed as a mechanism for compensating LPs for arbitrage losses.

Replicating Market Makers

no code implementations26 Mar 2021 Guillermo Angeris, Alex Evans, Tarun Chitra

We present a method for constructing Constant Function Market Makers (CFMMs) whose portfolio value functions match a desired payoff.

When does the tail wag the dog? Curvature and market making

no code implementations15 Dec 2020 Guillermo Angeris, Alex Evans, Tarun Chitra

We show that this definition is tightly related to the curvature of a CFMM's trading function and can be used to explain a number of heuristic results.

Why Stake When You Can Borrow?

no code implementations16 Jun 2020 Tarun Chitra, Alex Evans

As smart contract platforms autonomously manage billions of dollars of capital, quantifying the portfolio risk that investors engender in these systems is increasingly important.

POS

Liquidity Provider Returns in Geometric Mean Markets

no code implementations15 Jun 2020 Alex Evans

These strategies allow LP shares to replicate various trading strategies and financial contracts, including standard options.

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