# IEEE Transactions on Computational Imaging

## Issue 4 • Dec. 2018

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## Filter Results

Displaying Results 1 - 21 of 21

Publication Year: 2018, Page(s):C1 - C4
| PDF (648 KB)
• ### IEEE Signal Processing Society

Publication Year: 2018, Page(s): C2
| PDF (57 KB)
• ### Travel Time Tomography With Adaptive Dictionaries

Publication Year: 2018, Page(s):499 - 511
| | PDF (7283 KB) | HTML

We develop a two-dimensional travel time tomography method, which regularizes the inversion by modeling groups of slowness pixels from discrete slowness maps, called patches, as sparse linear combinations of atoms from a dictionary. We propose to use dictionary learning during the inversion to adapt dictionaries to specific slowness maps. This patch regularization, called the local model, is integ... View full abstract»

• ### Reconstructing Video of Time-Varying Sources From Radio Interferometric Measurements

Publication Year: 2018, Page(s):512 - 527
| | PDF (5861 KB) | HTML Media

Very long baseline interferometry (VLBI) makes it possible to recover the images of astronomical sources with extremely high angular resolution. Most recently, the Event Horizon Telescope (EHT) has extended VLBI to short millimeter wavelengths with a goal of achieving angular resolution sufficient for imaging the event horizons of nearby supermassive black holes. Interferometry provides measuremen... View full abstract»

• ### Joint CT Reconstruction and Segmentation With Discriminative Dictionary Learning

Publication Year: 2018, Page(s):528 - 536
| | PDF (3640 KB) | HTML

We present a novel algorithm for computed tomography that simultaneously computes a reconstruction and a corresponding segmentation. Our algorithm uses learned dictionaries for both the reconstruction and the segmentation, constructed via discriminative dictionary learning using a set of corresponding images and segmentations. We give a detailed description of the implementation of our algorithm, ... View full abstract»

• ### Sparse Blind Deconvolution for Distributed Radar Autofocus Imaging

Publication Year: 2018, Page(s):537 - 551
| | PDF (2771 KB) | HTML

A common problem that arises in radar imaging systems, especially those mounted on mobile platforms, is antenna position ambiguity. Approaches to resolve this ambiguity and correct position errors are generally known as radar autofocus. Common techniques that attempt to resolve the antenna ambiguity generally assume an unknown gain and phase error afflicting the radar measurements. However, ensuri... View full abstract»

• ### A Parametric Level set Method for Imaging Multiphase Conductivity Using Electrical Impedance Tomography

Publication Year: 2018, Page(s):552 - 561
| | PDF (2310 KB) | HTML

Electrical impedance tomography (EIT) is an imaging modality that provides cross-sectional images of objects that carry contrasts in electrical conductivity. EIT is suitable for example for monitoring industrial processes involving multiple phases with different conductivities. This paper presents a parametric level set (PLS) based reconstruction scheme for an EIT-imaging of conductivity distribut... View full abstract»

• ### Reflection Removal on Single Light Field Capture Using Focus Manipulation

Publication Year: 2018, Page(s):562 - 572
| | PDF (4745 KB) | HTML

Photos taken through reflective surfaces such as display windows inevitably suffer from visual degradations caused by reflection interferences. The superimposition of two layers, i.e., background and reflection, obscures important target features, and causes challenges for subsequent computer vision applications. In this paper, we introduce a reflection removal method using single light field (LF)... View full abstract»

• ### View-Consistent MeshFlow for Stereoscopic Video Stabilization

Publication Year: 2018, Page(s):573 - 584
| | PDF (4314 KB) | HTML Media

This paper presents a method to stabilize shaky stereoscopic videos captured by hand-held stereo cameras. It is often problematic to apply a traditional monocular video stabilization techniques directly to the stereoscopic views independently. This is mainly because some undesirable vertical disparities and inaccurate horizontal disparities are produced, which violates the original stereoscopic di... View full abstract»

• ### Reconstruction of Partially Sampled Multiband Images—Application to STEM-EELS Imaging

Publication Year: 2018, Page(s):585 - 598
| | PDF (3079 KB) | HTML

Electron microscopy has shown to be a very powerful tool to map the chemical nature of samples at various scales down to atomic resolution. However, many samples can not be analyzed with an acceptable signal-to-noise ratio because of the radiation damage induced by the electron beam. This is particularly crucial for electron energy loss spectroscopy (EELS), which acquires spectral-spatial data and... View full abstract»

• ### A Joint Row and Column Action Method for Cone-Beam Computed Tomography

Publication Year: 2018, Page(s):599 - 608
| | PDF (1393 KB) | HTML

The inversion of linear systems is fundamental in computed tomography (CT) reconstruction. Computational challenges arise when trying to invert large linear systems, as limited computing resources mean that only a part of the system can be kept in computer memory at any one time. In linear tomographic inversion problems, such as X-ray tomography, even a standard scan can produce millions of indivi... View full abstract»

• ### Three-Dimensional Microwave Imaging in$L^{p}$Banach Spaces: Numerical and Experimental Results

Publication Year: 2018, Page(s):609 - 623
| | PDF (4914 KB) | HTML

In this paper, a microwave imaging method able to inspect three-dimensional configurations is proposed. The approach is developed in$L^{p}$Banach spaces, and allows to suitably face the ill-posedness of the considered full vector inverse scattering problem. The assumed nonconventional spaces require several modifications in the... View full abstract»

• ### First-Order Induced Current Density Imaging and Electrical Properties Tomography in MRI

Publication Year: 2018, Page(s):624 - 631
| | PDF (2645 KB) | HTML

In this paper, we present an efficient dedicated electrical properties tomography (EPT) algorithm (calledfirst-order current density EPT) that exploits the particular radio frequency field structure, which is present in the midplane of a birdcage coil, to reconstruct conductivity and permittivity maps in this plane from$\hat{B}_1^+$ View full abstract»

• ### Fast 3-D Ultrasonic Imaging Using Time-Domain Synthetic Aperture Focusing TechniquesBased on Circular Scan Conversions

Publication Year: 2018, Page(s):632 - 639
| | PDF (3458 KB) | HTML

Drawing-arc-based synthetic aperture focusing technique (DAB-SAFT) is capable of greatly improving the imaging speed by reinterpreting the focusing process in the forward direction, but it is only suitable for a two-dimensional (2-D) ultrasonic testing. By extending DAB-SAFT to fast 3-D ultrasonic imaging, this paper proposes both spherical scan-conversion-based SAFT and a spherical-surface-conver... View full abstract»

• ### SAR Scene Size Limits for Spatially Invariant Defocus With Near- and Far-Field Geometries

Publication Year: 2018, Page(s):640 - 647
| | PDF (3145 KB) | HTML

Existing traditional or phase-only autofocus techniques rely on the assumption that the phase-error function, which causes synthetic aperture radar (SAR) image defocus, is spatially invariant. In many cases this assumption holds, but for larger scene sizes or scenarios where the far-field approximation does not hold, the spatially invariant phase error approximation breaks down. In this paper, an ... View full abstract»

• ### Sampling Design of Synthetic Volume Arrays for Three-Dimensional Microwave Imaging

Publication Year: 2018, Page(s):648 - 660
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In this paper, sampling design of three-dimensional (3-D) synthetic array (i.e., synthetic volume array) for microwave imaging is considered. Generally, the spatial sampling criteria for one- or two-dimensional arrays can be determined based on some narrowband/ultrawideband array theories. However, for 3-D arrays, where antennas are located in a volume instead of over a surface, these existing arr... View full abstract»

• ### Multispectral Compressive Imaging Strategies Using Fabry–Pérot Filtered Sensors

Publication Year: 2018, Page(s):661 - 673
| | PDF (2607 KB) | HTML Media

In this paper, we introduce two novel acquisition schemes for multispectral compressive imaging. Unlike most existing methods, the proposed computational imaging techniques do not include any dispersive element, as they use a dedicated sensor that integrates narrowband Fabry–Pérot spectral filters at the pixel level. The first scheme leverages joint inpainting and superresolution to fill in those ... View full abstract»

• ### List of Reviewers

Publication Year: 2018, Page(s):674 - 675
| PDF (31 KB)
• ### IEEE Transactions on Computational Imaging EDICS

Publication Year: 2018, Page(s): 676
| PDF (40 KB)
• ### Information for Authors

Publication Year: 2018, Page(s):677 - 679
| PDF (66 KB)
• ### Transactions on Computational Imaging

Publication Year: 2018, Page(s): C3
| PDF (212 KB)

## Aims & Scope

The IEEE Transactions on Computational Imaging will publish articles where computation plays an integral role in the image formation process. Papers will cover all areas of computational imaging ranging from fundamental theoretical methods to the latest innovative computational imaging system designs.

Full Aims & Scope

## Meet Our Editors

Editor-in-Chief
Dr. Brendt Wohlberg
Los Alamos National Laboratory