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The transfer-matrix method is a standard approach to wave propagation in stratified media. With the advent of cold-atom-based quantum and photonic technologies, several experiments and many proposals consider light propagation in…

Atomic Physics · Physics 2026-01-22 Igor M. Sokolov , William Guerin

X-ray absorption spectroscopy (XAS) is a powerful characterization technique for probing the local chemical environment of absorbing atoms. However, analyzing XAS data presents significant challenges, often requiring extensive,…

Materials Science · Physics 2025-04-16 Shubha R. Kharel , Fanchen Meng , Xiaohui Qu , Matthew R. Carbone , Deyu Lu

Context. Inferring spectral parameters from X-ray data is one of the cornerstones of high-energy astrophysics, and is achieved using software stacks that have been developed over the last twenty years and more. However, as models get more…

Instrumentation and Methods for Astrophysics · Physics 2024-10-23 Simon Dupourqué , Didier Barret , Camille M. Diez , Sébastien Guillot , Erwan Quintin

Watermarking diffusion-generated images is crucial for copyright protection and user tracking. However, current diffusion watermarking methods face significant limitations: zero-bit watermarking systems lack the capacity for large-scale…

Cryptography and Security · Computer Science 2025-09-01 Jiazheng Xing , Hai Ci , Hongbin Xu , Hangjie Yuan , Yong Liu , Mike Zheng Shou

The development of metasurfaces has enabled unprecedented portability and functionality in flat optical devices. Spaceplates have recently been introduced as a complementary element to reduce the space between individual metalenses. This…

Optics · Physics 2022-01-26 Jordan T. R. Page , Orad Reshef , Robert W. Boyd , Jeff S. Lundeen

Image rendering from line drawings is vital in design and image generation technologies reduce costs, yet professional line drawings demand preserving complex details. Text prompts struggle with accuracy, and image translation struggles…

Computer Vision and Pattern Recognition · Computer Science 2024-12-17 Xi Wang , Hongzhen Li , Heng Fang , Yichen Peng , Haoran Xie , Xi Yang , Chuntao Li

Lithography simulation is one of the key steps in physical verification, enabled by the substantial optical and resist models. A resist model bridges the aerial image simulation to printed patterns. While the effectiveness of learning-based…

Machine Learning · Computer Science 2018-07-10 Yibo Lin , Meng Li , Yuki Watanabe , Taiki Kimura , Tetsuaki Matsunawa , Shigeki Nojima , David Z. Pan

Recently, denoising diffusion probabilistic models (DDPM) have been applied to image segmentation by generating segmentation masks conditioned on images, while the applications were mainly limited to 2D networks without exploiting potential…

Image and Video Processing · Electrical Eng. & Systems 2023-08-21 Yunguan Fu , Yiwen Li , Shaheer U. Saeed , Matthew J. Clarkson , Yipeng Hu

Properties of complex oxide thin films can be tuned over a range of values as a function of mismatch, composition, orientation, and structure. Here, we report a strategy for growing structured epitaxial thermoelectric thin films leading to…

Materials Science · Physics 2013-10-08 D. Pravarthana , O. I. Lebedev , D. Chateigner , S. Hebert , P. A. Salvador , W. Prellier

Future hard (10 -100 keV) X-ray telescopes (SIMBOL-X, Con-X, HEXIT-SAT, XEUS) will implement focusing optics with multilayer coatings: in view of the production of these optics we are exploring several deposition techniques for the…

Instrumentation and Methods for Astrophysics · Physics 2015-09-09 D. Spiga , A. Mirone , G. Pareschi , R. Canestrari , V. Cotroneo , C. Ferrari , C. Ferrero , L. Lazzarini , D. Vernani

Resolving how defects emerge and interact within the hierarchical structure of polycrystalline materials remains a core challenge in materials science. Grain-mapping methods such as three-dimensional X-ray diffraction (3DXRD) and…

As a fundamental backbone for video generation, diffusion models are challenged by low inference speed due to the sequential nature of denoising. Previous methods speed up the models by caching and reusing model outputs at uniformly…

Computer Vision and Pattern Recognition · Computer Science 2025-03-19 Feng Liu , Shiwei Zhang , Xiaofeng Wang , Yujie Wei , Haonan Qiu , Yuzhong Zhao , Yingya Zhang , Qixiang Ye , Fang Wan

Modern imaging instruments can produce terabytes to petabytes of data for a single experiment. The biggest barrier to processing big image datasets has been computational, where image analysis algorithms often lack the efficiency needed to…

Computer Vision and Pattern Recognition · Computer Science 2026-03-13 Nicholas Schaub , Andriy Kharchenko , Hamdah Abbasi , Sameeul Samee , Hythem Sidky , Nathan Hotaling

Medical image synthesis plays a crucial role in clinical workflows, addressing the common issue of missing imaging modalities due to factors such as extended scan times, scan corruption, artifacts, patient motion, and intolerance to…

Image and Video Processing · Electrical Eng. & Systems 2025-07-23 Xiaojiao Xiao , Qinmin Vivian Hu , Guanghui Wang

We present a fast, differentiable, GPU-accelerated optimization method for ray path tracing in environments containing planar reflectors and straight diffraction edges. Based on Fermat's principle, our approach reformulates the path-finding…

Signal Processing · Electrical Eng. & Systems 2026-01-01 Jérome Eertmans , Sophie Lequeu , Benoît Legat , Laurent Jacques , Claude Oestges

Diffusion models represent a powerful family of generative models widely used for image and video generation. However, the time-consuming deployment, long inference time, and requirements on large memory hinder their applications on…

Machine Learning · Computer Science 2025-04-18 Kafeng Wang , Jianfei Chen , He Li , Zhenpeng Mi , Jun Zhu

Imaging systems operating in the terahertz part of the electromagnetic spectrum are in great demand because of the distinct characteristics of terahertz waves in penetrating many optically-opaque materials and providing unique spectral…

Optics · Physics 2024-01-09 Xurong Li , Deniz Mengu , Aydogan Ozcan , Mona Jarrahi

The integration of tabular data from diverse sources is often hindered by inconsistencies in formatting and representation, posing significant challenges for data analysts and personal digital assistants. Existing methods for automating…

Databases · Computer Science 2025-08-20 Arash Dargahi Nobari , Davood Rafiei

Optical multiplexing is a key technique that enhances the capacity of optical systems by independently modulating various optical parameters to carry distinct information. Among these parameters, wavelength, polarization, and angle are the…

Optics · Physics 2024-08-20 Rui Wei , Hongsheng Shi , Boyou Wang , Baojun Li , Yanjun Bao

Multiplex imaging is revolutionizing pathology by enabling the simultaneous visualization of multiple biomarkers within tissue samples, providing molecular-level insights that traditional hematoxylin and eosin (H&E) staining cannot provide.…

Image and Video Processing · Electrical Eng. & Systems 2026-01-06 Hyun-Jic Oh , Junsik Kim , Zhiyi Shi , Yichen Wu , Yu-An Chen , Peter K Sorger , Hanspeter Pfister , Won-Ki Jeong