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Orientation mapping is a widely used technique for revealing the microstructure of a polycrystalline sample. The crystalline orientation at each point in the sample is determined by analysis of the diffraction pattern, a process known as…

Mathematical Physics · Physics 2017-10-11 Peter Mahler Larsen , Søren Schmidt

If modern computers are sometimes superior to humans in some specialized tasks such as playing chess or browsing a large database, they can't beat the efficiency of biological vision for such simple tasks as recognizing and following an…

Neurons and Cognition · Quantitative Biology 2009-11-13 Laurent Perrinet

The performance of reproducing kernel Hilbert space-based methods is known to be sensitive to the choice of the reproducing kernel. Choosing an adequate reproducing kernel can be challenging and computationally demanding, especially in…

Machine Learning · Computer Science 2023-11-07 Emilio Ruiz-Moreno , Baltasar Beferull-Lozano

Large angular scale surveys in the absence of atmosphere are essential for measuring the primordial $B$-mode power spectrum of the Cosmic Microwave Background (CMB). Since this proposed measurement is about three to four orders of magnitude…

Instrumentation and Methods for Astrophysics · Physics 2025-03-05 Y. Takase , L. Vacher , H. Ishino , G. Patanchon , L. Montier , S. L. Stever , K. Ishizaka , Y. Nagano , W. Wang , J. Aumont , K. Aizawa , A. Anand , C. Baccigalupi , M. Ballardini , A. J. Banday , R. B. Barreiro , N. Bartolo , S. Basak , M. Bersanelli , M. Bortolami , T. Brinckmann , E. Calabrese , P. Campeti , E. Carinos , A. Carones , F. J. Casas , K. Cheung , L. Clermont , F. Columbro , A. Coppolecchia , F. Cuttaia , P. de Bernardis , T. de Haan , E. de la Hoz , S. Della Torre , P. Diego-Palazuelos , G. D'Alessandro , H. K. Eriksen , J. Errard , F. Finelli , U. Fuskeland , G. Galloni , M. Galloway , M. Gervasi , T. Ghigna , S. Giardiello , C. Gimeno-Amo , E. Gjerløw , R. González González , A. Gruppuso , M. Hazumi , S. Henrot-Versillé , L. T. Hergt , K. Ikuma , K. Kohri , L. Lamagna , M. Lattanzi , C. Leloup , M. Lembo , F. Levrier , A. I. Lonappan , M. López-Caniego , G. Luzzi , B. Maffei , E. Martínez-González , S. Masi , S. Matarrese , F. T. Matsuda , T. Matsumura , S. Micheli , M. Migliaccio , M. Monelli , G. Morgante , B. Mot , R. Nagata , T. Namikawa , A. Novelli , K. Odagiri , S. Oguri , R. Omae , L. Pagano , D. Paoletti , F. Piacentini , M. Pinchera , G. Polenta , L. Porcelli , N. Raffuzzi , M. Remazeilles , A. Ritacco , M. Ruiz-Granda , Y. Sakurai , D. Scott , Y. Sekimoto , M. Shiraishi , G. Signorelli , R. M. Sullivan , H. Takakura , L. Terenzi , M. Tomasi , M. Tristram , B. van Tent , P. Vielva , I. K. Wehus , B. Westbrook , G. Weymann-Despres , E. J. Wollack , M. Zannoni , Y. Zhou

Challenges inherent to high-resolution and high signal-to-noise data as well as model degeneracies can cause systematic biases in analyses of strong lens systems. In the past decade, the number of lens modeling methods has significantly…

Cosmology and Nongalactic Astrophysics · Physics 2024-12-10 A. Galan , G. Vernardos , Q. Minor , D. Sluse , L. Van de Vyvere , M. Gomer

Scientific image tampering is a problem that affects not only authors but also the general perception of the research community. Although previous researchers have developed methods to identify tampering in natural images, these methods may…

Computer Vision and Pattern Recognition · Computer Science 2020-03-06 Ziyue Xiang , Daniel E. Acuna

Ultrasound, alone or in concert with circulating microbubble contrast agents, has emerged as a promising modality for therapy and imaging of brain diseases. While this has become possible due to advancements in aberration correction…

Signal Processing · Electrical Eng. & Systems 2020-01-08 Scott Schoen , Costas D. Arvanitis

Reconstructing an image from sparsely sampled Fourier data is an ill-posed inverse problem that occurs in a variety of subjects within science, including the data analysis for Very Long Baseline Interferometry (VLBI) and the…

Instrumentation and Methods for Astrophysics · Physics 2024-01-22 Hendrik Müller , Paolo Massa , Alejandro Mus , Jong-Seo Kim , Emma Perracchione

We study in this paper a smoothness regularization method for functional linear regression and provide a unified treatment for both the prediction and estimation problems. By developing a tool on simultaneous diagonalization of two positive…

Statistics Theory · Mathematics 2012-11-13 Ming Yuan , T. Tony Cai

This paper provides a novel approach to stitching surface images of rotationally symmetric parts. It presents a process pipeline that uses a feature-based stitching approach to create a distortion-free and true-to-life image from a video…

Computer Vision and Pattern Recognition · Computer Science 2021-06-22 Tobias Schlagenhauf , Tim Brander , Juergen Fleischer

Beam steering involves the calibration of the angle and position at which a particle accelerator's electron beam is incident upon the x-ray target with respect to the rotation axis of the collimator. Beam Steering is an essential task for…

Accelerator Physics · Physics 2024-08-27 Dexter Allen , Isaac Kante , Dorian Bohler

Multiple-scale and broad-scale assessments often require rescaling the original data to a consistent grain size for analysis. Rescaling categorical raster data by spatial aggregation is common in large area ecological assessments. However,…

Quantitative Methods · Quantitative Biology 2014-08-04 J. W. Coulston , N. Zaccarelli , K. H. Riitters , F. H. Koch , G. Zurlini

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…

Image and Video Processing · Electrical Eng. & Systems 2018-02-28 Étienne Monier , Thomas Oberlin , Nathalie Brun , Marcel Tencé , Marta de Frutos , Nicolas Dobigeon

In many remote sensing applications one wants to estimate variables or parameters of interest from observations. When the target variable is available at a resolution that matches the remote sensing observations, standard algorithms such as…

SPECT (Single-photon Emission Computerized Tomography) and PET (Positron Emission Tomography) are essential medical imaging tools, for which the sampling angle number, scan time should be chosen carefully to compromise between image quality…

Medical Physics · Physics 2015-06-16 Xiaolin Zhou , Minkai Yun , Xuexiang Cao , Shuangquan Liu , Lu Wang , Xianchao Huang , Long Wei

With the emergence of CNT (Carbon nanotube), static and instant CT scanning becomes possible. By transforming the traditionally rotated thermal source into a static ring array source composed of multiple CNTs, the imaging system can achieve…

Medical Physics · Physics 2025-02-11 Jiayu Duan , Yang Li , Jianmei Cai , Xuanqin Mou

Surface enhanced Raman spectroscopy, is a technique of fundamental importance to analytical science and technology where the amplified Raman spectrum of analytes is used for chemical fingerprinting. Here, we showcase an engineered…

Applied Physics · Physics 2021-06-08 K N Prajapati , Anoop A Nair , S Ravi P Silva , J Mitra

Ghost imaging LiDAR via sparsity constraints using push-broom scanning is proposed. It can image the stationary target scene continuously along the scanning direction by taking advantage of the relative movement between the platform and the…

Image and Video Processing · Electrical Eng. & Systems 2019-05-22 Shuang Ma , Zhentao Liu , Chenglong Wang , Chenyu Hu , Enrong Li , Wenlin Gong , Zhishen Tong , Jianrong Wu , Xia Shen , Shensheng Han

We use both simulated and real quasar light curves to explore modeling photometric reverberation-mapping (RM) data as a stochastic process. We do this using modifications to our previously developed RM method based on modeling quasar…

Cosmology and Nongalactic Astrophysics · Physics 2016-03-30 Ying Zu , C. S. Kochanek , Szymon Kozłowski , B. M. Peterson

Pattern matching between target electron backscatter patterns (EBSPs) and dynamically simulated EBSPs was used to determine the pattern centre (PC) and crystal orientation, using a global optimisation algorithm. Systematic analysis of error…

Materials Science · Physics 2019-04-16 Tomohito Tanaka , Angus J. Wilkinson