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Aberration-corrected optics have made electron microscopy at atomic-resolution a widespread and often essential tool for nanocharacterization. Image resolution is dominated by beam energy and the numerical aperture of the lens ({\alpha}),…

Simulation-based image quality metrics are adapted and investigated for characterizing the parameter dependences of linear iterative image reconstruction for DBT. Three metrics based on 2D DBT simulation are investigated: (1) a…

Medical Physics · Physics 2017-11-01 Sean D. Rose , Adrian A. Sanchez , Emil Y. Sidky , Xiaochuan Pan

In the quantitative analysis of Dynamic Contrast-Enhanced Magnetic Resonance Imaging (DCE-MRI) compartment models allow to describe the uptake of contrast medium with biological meaningful kinetic parameters. As simple models often fail to…

Methodology · Statistics 2020-05-04 Julia C. Sommer , Volker J. Schmid

Digital two-dimensional (2D) spatial sampling devices (such as charge-coupled device) have been widely used in various imaging systems, especially in computational imaging systems. However, the undersampling of digital sampling devices is a…

Image and Video Processing · Electrical Eng. & Systems 2019-10-02 Junzheng Peng , Manhong Yao , Zixin Cai , Xue Qiu , Zibang Zhang , Shiping Li , Jingang Zhong

Detecting out-of-distribution (OOD) samples for trusted medical image segmentation remains a significant challenge. The critical issue here is the lack of a strict definition of abnormal data, which often results in artificial problem…

Image and Video Processing · Electrical Eng. & Systems 2023-08-16 Anton Vasiliuk , Daria Frolova , Mikhail Belyaev , Boris Shirokikh

In this paper we present a new methodology for edge detection in digital images. The first originality of the proposed method is to consider image content as a parametric surface. Then, an original parametric local model of this surface…

Image and Video Processing · Electrical Eng. & Systems 2019-04-24 Rémi Cogranne , Rémi Slysz , Laurence Moreau , Houman Borouchaki

Human subjective evaluation is optimal to assess speech quality for human perception. The recently introduced deep noise suppression mean opinion score (DNSMOS) metric was shown to estimate human ratings with great accuracy. The…

Sound · Computer Science 2021-07-16 Amir Ivry , Israel Cohen , Baruch Berdugo

Purpose: Biophysical tissue models are increasingly used in the interpretation of diffusion MRI (dMRI) data, with the potential to provide specific biomarkers of brain microstructural changes. However, the general Standard Model has…

Biological Physics · Physics 2019-03-19 Santiago Coelho , Jose M. Pozo , Sune N. Jespersen , Derek K. Jones , Alejandro F. Frangi

Bayesian optimization (BO) has shown impressive results in a variety of applications within low-to-moderate dimensional Euclidean spaces. However, extending BO to high-dimensional settings remains a significant challenge. We address this…

Machine Learning · Statistics 2024-03-11 Shouri Hu , Jiawei Li , Zhibo Cai

Dual energy computed tomography (DECT) has become of particular interest in clinic recent years. The DECT scan comprises two images, corresponding to two photon attenuation coefficients maps of the objects. Meanwhile, the DECT images are…

Medical Physics · Physics 2017-11-21 Sui Li , Yongbo Wang , Yuting Liao , Ji He , Dong Zeng , Zhaoying Bian , Jianhua Ma

Sparse representation of 3D images is considered within the context of data reduction. The goal is to produce high quality approximations of 3D images using fewer elementary components than the number of intensity points in the 3D array.…

Image and Video Processing · Electrical Eng. & Systems 2019-06-12 Laura Rebollo-Neira , Daniel Whitehouse

Efficient and effective real-world image super-resolution (Real-ISR) is a challenging task due to the unknown complex degradation of real-world images and the limited computation resources in practical applications. Recent research on…

Computer Vision and Pattern Recognition · Computer Science 2022-03-29 Jie Liang , Hui Zeng , Lei Zhang

High energy dual-energy X-ray Digital Radiography(DR) imaging is mainly used in material recognition of the cargo inspection. We introduce the development history and the principle of the technology and describe the data process flow of our…

Instrumentation and Detectors · Physics 2014-12-01 Zhi-qiang Chen , Tiao Zhao , Liang Li

Mass spectrometry imaging (MSI) as an analytical tool for bio-molecular and bio-medical research targets, accurate compound localization and identification. In terms of dedicated instrumentation, this translates into the demand for more…

Instrumentation and Detectors · Physics 2013-05-24 Julia H. Jungmann , Ron M. A. Heeren

Dual energy computerized tomography has gained great interest because of its ability to characterize the chemical composition of a material rather than simply providing relative attenuation images as in conventional tomography. The purpose…

Computer Vision and Pattern Recognition · Computer Science 2015-05-27 Oguz Semerci , Eric L. Miller

Scanning electron microscopy (SEM) is a versatile technique used to image samples at the nanoscale. Conventional imaging by this technique relies on finding the average intensity of the signal generated on a detector by secondary electrons…

Instrumentation and Detectors · Physics 2021-11-04 Akshay Agarwal , John Simonaitis , Vivek K. Goyal , Karl K. Berggren

We simulate the performance of a gravitational wave interferometer in the Dual Recycling (DR) configuration, as will be used for systems like Advanced-LIGO. Our grid-based simulation program models complex interferometric detectors with…

Astrophysics · Physics 2015-06-24 Brett Bochner

In a standard computed tomography (CT) image, pixels having the same Hounsfield Units (HU) can correspond to different materials and it is therefore challenging to differentiate and quantify materials. Dual-energy CT (DECT) is desirable to…

Medical Physics · Physics 2020-10-27 Wei Zhao , Tianling Lyu , Yang Chen , Lei Xing

A key challenge in maximizing the benefits of Magnetic Resonance Imaging (MRI) in clinical settings is to accelerate acquisition times without significantly degrading image quality. This objective requires a balance between under-sampling…

Machine Learning · Computer Science 2025-06-23 Jacopo Iollo , Geoffroy Oudoumanessah , Carole Lartizien , Michel Dojat , Florence Forbes

This paper presents a novel method, Zero-Reference Deep Curve Estimation (Zero-DCE), which formulates light enhancement as a task of image-specific curve estimation with a deep network. Our method trains a lightweight deep network, DCE-Net,…

Computer Vision and Pattern Recognition · Computer Science 2021-03-02 Chongyi Li , Chunle Guo , Chen Change Loy