no code implementations • 1 Apr 2024 • Ruiming Cao, Dekel Galor, Amit Kohli, Jacob L Yates, Laura Waller
Event cameras capture changes of intensity over time as a stream of 'events' and generally cannot measure intensity itself; hence, they are only used for imaging dynamic scenes.
no code implementations • 31 Mar 2024 • Charles Dove, Jatearoon Boondicharern, Laura Waller
Simulators based on neural networks offer a path to orders-of-magnitude faster electromagnetic wave simulations.
no code implementations • 12 Feb 2024 • Amit Kohli, Anastasios N. Angelopoulos, Laura Waller
The performance of an imaging system is limited by optical aberrations, which cause blurriness in the resulting image.
1 code implementation • 9 Feb 2024 • Henry Pinkard, Cherry Liu, Fanice Nyatigo, Daniel A. Fletcher, Laura Waller
Computational microscopy, in which hardware and algorithms of an imaging system are jointly designed, shows promise for making imaging systems that cost less, perform more robustly, and collect new types of information.
no code implementations • 7 Dec 2022 • Guanghan Meng, Dekel Galor, Laura Waller, Martin S. Banks
Presenting dynamic scenes without incurring motion artifacts visible to observers requires sustained effort from the display industry.
2 code implementations • 17 Jun 2022 • Amit Kohli, Anastasios N. Angelopoulos, David McAllister, Esther Whang, Sixian You, Kyrollos Yanny, Federico M. Gasparoli, Laura Waller
The most ubiquitous form of computational aberration correction for microscopy is deconvolution.
no code implementations • 3 Jun 2022 • Ruiming Cao, Fanglin Linda Liu, Li-Hao Yeh, Laura Waller
We propose a new method, Speckle Flow SIM, that uses static patterned illumination with moving samples and models the sample motion during data capture in order to reconstruct the dynamic scene with super-resolution.
no code implementations • CVPR 2022 • Kristina Monakhova, Stephan R. Richter, Laura Waller, Vladlen Koltun
To enable this, we develop a GAN-tuned physics-based noise model to more accurately represent camera noise at the lowest light levels.
Ranked #7 on Image Denoising on SID x300
no code implementations • NeurIPS Workshop Deep_Invers 2021 • Alex Liu, Yi Xue, Laura Waller
Computer-generated holography (CGH) has broad applications such as direct-view display, virtual and augmented reality, as well as optical microscopy.
no code implementations • NeurIPS Workshop Deep_Invers 2021 • Eric Markley, Fanglin Linda Liu, Michael Kellman, Nick Antipa, Laura Waller
A diffuser in the Fourier space of an imaging system can encode 3D fluorescence intensity information in a single-shot 2D measurement, which is then recovered by a compressed sensing algorithm.
1 code implementation • 13 Mar 2021 • Kristina Monakhova, Vi Tran, Grace Kuo, Laura Waller
We demonstrate our untrained approach on lensless compressive 2D imaging as well as single-shot high-speed video recovery using the camera's rolling shutter, and single-shot hyperspectral imaging.
no code implementations • 12 Oct 2020 • Kyrollos Yanny, Nick Antipa, William Liberti, Sam Dehaeck, Kristina Monakhova, Fanglin Linda Liu, Konlin Shen, Ren Ng, Laura Waller
Miniature fluorescence microscopes are a standard tool in systems biology.
1 code implementation • 15 Jun 2020 • Kristina Monakhova, Kyrollos Yanny, Neerja Aggarwal, Laura Waller
Hyperspectral imaging is useful for applications ranging from medical diagnostics to agricultural crop monitoring; however, traditional scanning hyperspectral imagers are prohibitively slow and expensive for widespread adoption.
1 code implementation • 27 May 2020 • Michael Kellman, Michael Lustig, Laura Waller
The goal of this tutorial is to explain step-by-step how to implement physics-based learning for the rapid prototyping of a computational imaging system.
no code implementations • NeurIPS Workshop Deep_Invers 2019 • Michael Kellman, Kevin Zhang, Jon Tamir, Emrah Bostan, Michael Lustig, Laura Waller
Critical aspects of computational imaging systems, such as experimental design and image priors, can be optimized through deep networks formed by the unrolled iterations of classical model-based reconstructions (termed physics-based networks).
no code implementations • 11 Dec 2019 • Michael Kellman, Jon Tamir, Emrah Boston, Michael Lustig, Laura Waller
Computational imaging systems jointly design computation and hardware to retrieve information which is not traditionally accessible with standard imaging systems.
no code implementations • NeurIPS Workshop Deep_Invers 2019 • Kristina Monakhova, Joshua Yurtsever, Grace Kuo, Nick Antipa, Kyrollos Yanny, Laura Waller
Various reconstruction methods are explored, on a scale from classic iterative approaches (based on the physical imaging model) to deep learned methods with many learned parameters.
no code implementations • 30 Aug 2019 • Kristina Monakhova, Joshua Yurtsever, Grace Kuo, Nick Antipa, Kyrollos Yanny, Laura Waller
In this work, we address these limitations using a bounded-compute, trainable neural network to reconstruct the image.
1 code implementation • 30 May 2019 • Nick Antipa, Patrick Oare, Emrah Bostan, Ren Ng, Laura Waller
Here, we propose using multiplexing optics to spatially compress the scene, enabling information about the whole scene to be sampled from a row of sensor pixels, which can be read off quickly via a rolling shutter CMOS sensor.
no code implementations • 8 Apr 2019 • Michael Kellman, Emrah Bostan, Michael Chen, Laura Waller
In this work, we learn LED source pattern designs that compress the many required measurements into only a few, with negligible loss in reconstruction quality or resolution.
no code implementations • 10 Aug 2018 • Michael R. Kellman, Emrah Bostan, Nicole Repina, Laura Waller
Our method incorporates both the physics of the measurement scheme and the non-linearity of the reconstruction algorithm into the design problem.
no code implementations • 29 Jan 2018 • Emrah Bostan, Ulugbek S. Kamilov, Laura Waller
In the past decade, sparsity-driven regularization has led to advancement of image reconstruction algorithms.
no code implementations • 5 Oct 2017 • Nick Antipa, Grace Kuo, Reinhard Heckel, Ben Mildenhall, Emrah Bostan, Ren Ng, Laura Waller
We demonstrate a compact and easy-to-build computational camera for single-shot 3D imaging.
no code implementations • 5 May 2017 • Hsiou-Yuan Liu, Dehong Liu, Hassan Mansour, Petros T. Boufounos, Laura Waller, Ulugbek S. Kamilov
Specifically, it corresponds to a series expansion of the scattered wave with an accelerated-gradient method.
no code implementations • 26 Oct 2016 • Li-Hao Yeh, Lei Tian, Laura Waller
Structured illumination microscopy (SIM) improves resolution by down-modulating high-frequency information of an object to fit within the passband of the optical system.
no code implementations • 10 Nov 2015 • Li-Hao Yeh, Jonathan Dong, Jingshan Zhong, Lei Tian, Michael Chen, Gongguo Tang, Mahdi Soltanolkotabi, Laura Waller
Both noise (e. g. Poisson noise) and model mis-match errors are shown to scale with intensity.