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Unmanned Aerial Vehicle (UAV) applications have become increasingly prevalent in aerial photography and object recognition. However, there are major challenges to accurately capturing small targets in object detection due to the imbalanced…

Computer Vision and Pattern Recognition · Computer Science 2026-01-26 Rongxin Huang , Guangfeng Lin , Wenbo Zhou , Zhirong Li , Wenhuan Wu

Optical resolution photoacoustic microscopy (OR-PAM) leverages optical focusing and acoustic detection for microscopic optical absorption imaging. Intrinsically it owns high optical lateral resolution and poor acoustic axial resolution.…

Signal Processing · Electrical Eng. & Systems 2023-09-19 Yu-Hsiang Yu , Meng-Lin Li

Carrier phase positioning (CPP) can enable cm-level accuracy in next-generation wireless systems, while recent literature shows that accuracy remains high using phase-only measurements in distributed MIMO (D-MIMO). However, the impact of…

Signal Processing · Electrical Eng. & Systems 2026-02-06 Fatih Ayten , Musa Furkan Keskin , Akshay Jain , Mehmet C. Ilter , Ossi Kaltiokallio , Jukka Talvitie , Elena Simona Lohan , Mikko Valkama

X-ray phase-contrast imaging has the potential to improve image contrast with lower dose by probing an object's refractive properties as well as its absorptive properties. To reconstruct a phase-contrast image from a raw dataset, a phase…

Medical Physics · Physics 2025-08-19 Giavanna Jadick , Patrick La Rivière

A novel Material Point Method (MPM) is introduced for addressing frictional contact problems. In contrast to the standard multi-velocity field approach, this method employs a penalty method to evaluate contact forces at the discretised…

Numerical Analysis · Mathematics 2024-03-21 Emmanouil G. Kakouris , Manolis N. Chatzis , Savvas P. Triantafyllou

Ising machines are emerging as a powerful physical alternative to digital processors for solving combinatorial optimization problems. Among them, spatial photonic Ising machines (SPIMs) offer compact, room-temperature hardware with…

Gapless quantum phases can become distinct when internal symmetries are enforced, in analogy with gapped symmetry-protected topological (SPT) phases. However, this distinction does not always lead to protected edge modes, raising the…

Strongly Correlated Electrons · Physics 2025-12-30 Saranesh Prembabu , Shu-Heng Shao , Ruben Verresen

Image-based systems have gained popularity owing to their capacity to provide rich manufacturing status information, low implementation costs and high acquisition rates. However, the complexity of the image background and various anomaly…

Machine Learning · Statistics 2025-01-06 Hao Xu , Juan Du , Andi Wang , YingCong Chen

We study the convergence rate of the alternating projection method (APM) applied to the intersection of an affine subspace and the second-order cone. We show that when they intersect non-transversally, the convergence rate is $O(k^{-1/2})$,…

Optimization and Control · Mathematics 2024-01-05 Hiroyuki Ochiai , Yoshiyuki Sekiguchi , Hayato Waki

This paper investigates the boresight alignment control problem under safety constraints and performance requirements, involving pointing-forbidden constraint, attitude angular velocity limitation, and pointing accuracy requirement.…

Systems and Control · Electrical Eng. & Systems 2024-02-15 Jiakun Lei , Tao Meng , Kun Wang , Weijia Wang , Shujian Sun , Lei Wang

Portrait harmonization aims to composite a subject into a new background, adjusting its lighting and color to ensure harmony with the background scene. Existing harmonization techniques often only focus on adjusting the global color and…

Computer Vision and Pattern Recognition · Computer Science 2024-04-09 Mengwei Ren , Wei Xiong , Jae Shin Yoon , Zhixin Shu , Jianming Zhang , HyunJoon Jung , Guido Gerig , He Zhang

This paper focuses on studying orthogonal and non-orthogonal multiple access in intelligent reflecting surface (IRS)-aided systems. Unlike most prior works assuming continuous phase shifts, we employ the practical setup where only a finite…

Information Theory · Computer Science 2023-03-16 Wei Jiang , Hans Dieter Schotten

In uplink integrated sensing and communication (ISAC) systems, pilot signal design is crucial for enabling accurate channel estimation and reliable radar sensing. In orthogonal frequency-division multiple access (OFDMA)-based frameworks,…

Signal Processing · Electrical Eng. & Systems 2025-08-05 Ahmet Sacid Sümer , Ebubekir Memişoğlu , Hüseyin Arslan

The Mach--Zehnder interferometer is a powerful device for detecting small phase shifts between two light beams. Simple input states -- such as coherent states or single photons -- can reach the standard quantum limit of phase estimation…

Quantum Physics · Physics 2026-05-08 Ondřej Černotík , Iivari Pietikäinen , Shruti Puri , S. M. Girvin , Radim Filip

Many low-frequency radio interferometers are aiming to detect very faint spectral signatures from structures at cosmological redshifts, particularly of neutral Hydrogen using its characteristic 21 cm spectral line. Due to the very high…

Cosmology and Nongalactic Astrophysics · Physics 2020-07-03 Nithyanandan Thyagarajan , Chris Carilli

Exact characterization of phase transitions requires sufficient configurational sampling, necessitating efficient and accurate potential energy surfaces. Molecular force fields with computational efficiency and physical interpretability are…

Statistical Mechanics · Physics 2025-10-21 Bin Jin , Bin Han , Wei Feng , Kuang Yu , Shenzhen Xu

Atomic Force Microscopy (AFM) enables high-resolution surface imaging at the nanoscale, yet the output is often degraded by artifacts introduced by environmental noise, scanning imperfections, and tip-sample interactions. To address this…

Computer Vision and Pattern Recognition · Computer Science 2026-02-05 Juntao Zhang , Angona Biswas , Jaydeep Rade , Charchit Shukla , Juan Ren , Anwesha Sarkar , Adarsh Krishnamurthy , Aditya Balu

To meet the growing demand for high data rates, cellular systems are expected to evolve towards higher carrier frequencies and larger antenna arrays, but conventional phased arrays face challenges in supporting such a prospection due to…

Signal Processing · Electrical Eng. & Systems 2025-02-06 Zicheng Lin , Shuhao Zeng , Aryan Kaushik , Hongliang Zhang

Adversarial attack patches have gained increasing attention due to their practical applicability in physical-world scenarios. However, the bright colors used in attack patches represent a significant drawback, as they can be easily…

Computer Vision and Pattern Recognition · Computer Science 2023-07-04 Mingzhen Shao

Phase-contrast imaging is an emerging technology that may increase the signal-difference-to-noise ratio in medical imaging. One of the most promising phase-contrast techniques is Talbot interferometry, which, combined with energy-sensitive…

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