Search Results for author: Emrah Bostan

Found 8 papers, 2 papers with code

Unrolled Primal-Dual Networks for Lensless Cameras

1 code implementation8 Mar 2022 Oliver Kingshott, Nick Antipa, Emrah Bostan, Kaan Akşit

Conventional image reconstruction models for lensless cameras often assume that each measurement results from convolving a given scene with a single experimentally measured point-spread function.

Image Reconstruction

Memory-efficient Learning for Large-scale Computational Imaging

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).

Experimental Design Super-Resolution

Video from Stills: Lensless Imaging with Rolling Shutter

1 code implementation30 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.

Data-Driven Design for Fourier Ptychographic Microscopy

no code implementations8 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.

Experimental Design Retrieval +1

Physics-based Learned Design: Optimized Coded-Illumination for Quantitative Phase Imaging

no code implementations10 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.

Experimental Design Retrieval

Learning-based Image Reconstruction via Parallel Proximal Algorithm

no code implementations29 Jan 2018 Emrah Bostan, Ulugbek S. Kamilov, Laura Waller

In the past decade, sparsity-driven regularization has led to advancement of image reconstruction algorithms.

Image Reconstruction

DiffuserCam: Lensless Single-exposure 3D Imaging

no code implementations5 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.

Learning Convex Regularizers for Optimal Bayesian Denoising

no code implementations16 May 2017 Ha Q. Nguyen, Emrah Bostan, Michael Unser

We propose a data-driven algorithm for the maximum a posteriori (MAP) estimation of stochastic processes from noisy observations.

Denoising

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