Search Results for author: Julien N. P. Martel

Found 9 papers, 6 papers with code

Learning Spatially Varying Pixel Exposures for Motion Deblurring

1 code implementation14 Apr 2022 Cindy M. Nguyen, Julien N. P. Martel, Gordon Wetzstein

Computationally removing the motion blur introduced by camera shake or object motion in a captured image remains a challenging task in computational photography.

Deblurring

MantissaCam: Learning Snapshot High-dynamic-range Imaging with Perceptually-based In-pixel Irradiance Encoding

no code implementations9 Dec 2021 Haley M. So, Julien N. P. Martel, Piotr Dudek, Gordon Wetzstein

We demonstrate the efficacy of our method in simulation and show benefits of our algorithm on modulo images captured with a prototype implemented with a programmable sensor.

ACORN: Adaptive Coordinate Networks for Neural Scene Representation

1 code implementation6 May 2021 Julien N. P. Martel, David B. Lindell, Connor Z. Lin, Eric R. Chan, Marco Monteiro, Gordon Wetzstein

Here, we introduce a new hybrid implicit-explicit network architecture and training strategy that adaptively allocates resources during training and inference based on the local complexity of a signal of interest.

3D Shape Representation Representation Learning

Time-Multiplexed Coded Aperture Imaging: Learned Coded Aperture and Pixel Exposures for Compressive Imaging Systems

no code implementations ICCV 2021 Edwin Vargas, Julien N. P. Martel, Gordon Wetzstein, Henry Arguello

Compressive imaging using coded apertures (CA) is a powerful technique that can be used to recover depth, light fields, hyperspectral images and other quantities from a single snapshot.

Implicit Neural Representations with Periodic Activation Functions

24 code implementations NeurIPS 2020 Vincent Sitzmann, Julien N. P. Martel, Alexander W. Bergman, David B. Lindell, Gordon Wetzstein

However, current network architectures for such implicit neural representations are incapable of modeling signals with fine detail, and fail to represent a signal's spatial and temporal derivatives, despite the fact that these are essential to many physical signals defined implicitly as the solution to partial differential equations.

Image Inpainting

Event Based, Near Eye Gaze Tracking Beyond 10,000Hz

1 code implementation7 Apr 2020 Anastasios N. Angelopoulos, Julien N. P. Martel, Amit P. S. Kohli, Jorg Conradt, Gordon Wetzstein

The cameras in modern gaze-tracking systems suffer from fundamental bandwidth and power limitations, constraining data acquisition speed to 300 Hz realistically.

Estimation of Z-Thickness and XY-Anisotropy of Electron Microscopy Images using Gaussian Processes

1 code implementation1 Feb 2020 Thanuja D. Ambegoda, Julien N. P. Martel, Jozef Adamcik, Matthew Cook, Richard H. R. Hahnloser

Serial section electron microscopy (ssEM) is a widely used technique for obtaining volumetric information of biological tissues at nanometer scale.

Gaussian Processes

Adaptive motor control and learning in a spiking neural network realised on a mixed-signal neuromorphic processor

no code implementations25 Oct 2018 Sebastian Glatz, Julien N. P. Martel, Raphaela Kreiser, Ning Qiao, Yulia Sandamirskaya

In this paper, we present a spiking neural network architecture that uses sensory feedback to control rotational velocity of a robotic vehicle.

Efficient Neural Network

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