Search Results for author: Petros T. Boufounos

Found 12 papers, 0 papers with code

Fast and High-Quality Blind Multi-Spectral Image Pansharpening

no code implementations17 Mar 2021 Lantao Yu, Dehong Liu, Hassan Mansour, Petros T. Boufounos

First, we estimate the blur kernel by computing the kernel coefficients with minimum total generalized variation that blur a downsampled version of the PAN image to approximate a linear combination of the LRMS image channels.

Image Reconstruction

Multiview Sensing With Unknown Permutations: An Optimal Transport Approach

no code implementations12 Mar 2021 Yanting Ma, Petros T. Boufounos, Hassan Mansour, Shuchin Aeron

In several applications, including imaging of deformable objects while in motion, simultaneous localization and mapping, and unlabeled sensing, we encounter the problem of recovering a signal that is measured subject to unknown permutations.

Simultaneous Localization and Mapping

High-Contrast Reflection Tomography with Total-Variation Constraints

no code implementations6 May 2020 Ajinkya Kadu, Hassan Mansour, Petros T. Boufounos

Inverse scattering is the process of estimating the spatial distribution of the scattering potential of an object by measuring the scattered wavefields around it.

Geophysics

Sparse Blind Deconvolution for Distributed Radar Autofocus Imaging

no code implementations8 May 2018 Hassan Mansour, Dehong Liu, Ulugbek S. Kamilov, Petros T. Boufounos

Common techniques that attempt to resolve the antenna ambiguity generally assume an unknown gain and phase error afflicting the radar measurements.

Accelerated Image Reconstruction for Nonlinear Diffractive Imaging

no code implementations4 Aug 2017 Yanting Ma, Hassan Mansour, Dehong Liu, Petros T. Boufounos, Ulugbek S. Kamilov

The problem of reconstructing an object from the measurements of the light it scatters is common in numerous imaging applications.

Image Reconstruction

Online Convolutional Dictionary Learning for Multimodal Imaging

no code implementations13 Jun 2017 Kevin Degraux, Ulugbek S. Kamilov, Petros T. Boufounos, Dehong Liu

Computational imaging methods that can exploit multiple modalities have the potential to enhance the capabilities of traditional sensing systems.

Dictionary Learning

Compressive Imaging with Iterative Forward Models

no code implementations5 Oct 2016 Hsiou-Yuan Liu, Ulugbek S. Kamilov, Dehong Liu, Hassan Mansour, Petros T. Boufounos

We propose a new compressive imaging method for reconstructing 2D or 3D objects from their scattered wave-field measurements.

A Recursive Born Approach to Nonlinear Inverse Scattering

no code implementations11 Mar 2016 Ulugbek S. Kamilov, Dehong Liu, Hassan Mansour, Petros T. Boufounos

The Iterative Born Approximation (IBA) is a well-known method for describing waves scattered by semi-transparent objects.

Transparent objects

Depth Superresolution using Motion Adaptive Regularization

no code implementations4 Mar 2016 Ulugbek S. Kamilov, Petros T. Boufounos

Spatial resolution of depth sensors is often significantly lower compared to that of conventional optical cameras.

Representation and Coding of Signal Geometry

no code implementations23 Dec 2015 Petros T. Boufounos, Shantanu Rane, Hassan Mansour

In this paper, we examine the problem of encoding signals such that sufficient information is preserved about their pairwise distances and their inner products.

Learning Model-Based Sparsity via Projected Gradient Descent

no code implementations7 Sep 2012 Sohail Bahmani, Petros T. Boufounos, Bhiksha Raj

As an example we elaborate on application of the main results to estimation in Generalized Linear Model.

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