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The quantum Fourier transform (QFT) has been implemented on a three bit nuclear magnetic resonance (NMR) quantum computer, providing a first step towards the realization of Shor's factoring and other quantum algorithms. Implementation of…

Quantum Physics · Physics 2009-01-23 Yaakov S. Weinstein , Seth Lloyd , David G. Cory

Super resolution offers a way to harness medium even lowresolution but historically valuable remote sensing image archives. Generative models, especially diffusion models, have recently been applied to remote sensing super resolution…

Computer Vision and Pattern Recognition · Computer Science 2025-10-28 Songxi Yang , Tang Sui , Qunying Huang

The availability of high-resolution weather radar images underpins effective forecasting and decision-making. In regions beyond traditional radar coverage, generative models have emerged as an important synthetic capability, fusing more…

Remarkable advances have been achieved in localization techniques in past decades, rendering it one of the most important technologies indispensable to our daily lives. In this paper, we investigate a novel localization approach for future…

Emerging Technologies · Computer Science 2024-05-07 Entong He , Yuxiang Yang , Chenshu Wu

Rotated object detection has made significant progress in the optical remote sensing. However, advancements in the Synthetic Aperture Radar (SAR) field are laggard behind, primarily due to the absence of a large-scale dataset. Annotating…

Computer Vision and Pattern Recognition · Computer Science 2025-01-09 Xin Zhang , Xue Yang , Yuxuan Li , Jian Yang , Ming-Ming Cheng , Xiang Li

Multi-source data classification is a critical yet challenging task for remote sensing image interpretation. Existing methods lack adaptability to diverse land cover types when modeling frequency domain features. To this end, we propose a…

Image and Video Processing · Electrical Eng. & Systems 2025-07-08 Yikang Zhao , Feng Gao , Xuepeng Jin , Junyu Dong , Qian Du

Synthetic aperture radar technology is crucial for high-resolution imaging under various conditions; however, the acquisition of real-world synthetic aperture radar data for deep learning-based automatic target recognition remains…

Computer Vision and Pattern Recognition · Computer Science 2024-09-24 Minjun Kim , Ohtae Jang , Haekang Song , Heesub Shin , Jaewoo Ok , Minyoung Back , Jaehyuk Youn , Sungho Kim

Synthetic aperture radar (SAR) images are often blurred by phase perturbations induced by uncompensated sensor motion and /or unknown propagation effects caused by turbulent media. To get refocused images, autofocus proves to be useful…

Instrumentation and Methods for Astrophysics · Physics 2015-03-03 Xinhua Mao , Daiyin Zhu , Zhaoda Zhu

Quadratic discriminant analysis (QDA) is a widely used classification technique that generalizes the linear discriminant analysis (LDA) classifier to the case of distinct covariance matrices among classes. For the QDA classifier to yield…

Machine Learning · Computer Science 2020-06-26 Houssem Sifaou , Abla Kammoun , Mohamed-Slim Alouini

Medical Image-to-image translation is a key task in computer vision and generative artificial intelligence, and it is highly applicable to medical image analysis. GAN-based methods are the mainstream image translation methods, but they…

Image and Video Processing · Electrical Eng. & Systems 2023-11-07 Zhuhui Wang , Jianwei Zuo , Xuliang Deng , Jiajia Luo

The Fast Fourier Transform (FFT) is a numerical operation that transforms a function into a form comprised of its constituent frequencies and is an integral part of scientific computation and data analysis. The objective of our work is to…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-02-04 Sudhanshu Kulkarni , Burlen Loring , E. Wes Bethel

Target detection is the front-end stage in any automatic target recognition system for synthetic aperture radar (SAR) imagery (SAR-ATR). The efficacy of the detector directly impacts the succeeding stages in the SAR-ATR processing chain.…

Image and Video Processing · Electrical Eng. & Systems 2018-04-16 Khalid El-Darymli , Peter McGuire , Desmond Power , Cecilia Moloney

Data collection has always been a major issue in the modeling and training of large deep learning networks, as no dataset can account for every slight deviation we might see in live usage. Collecting samples can be especially costly for…

Computer Vision and Pattern Recognition · Computer Science 2025-05-05 Conor Flynn , Christopher Ebersole , Edmund Zelnio

Data compression can be achieved by reducing the dimensionality of high-dimensional but approximately low-rank datasets, which may in fact be described by the variation of a much smaller number of parameters. It often serves as a…

Quantum Physics · Physics 2021-08-03 Chao-Hua Yu , Fei Gao , Song Lin , Jingbo Wang

Radar has become an essential sensor for autonomous navigation, especially in challenging environments where camera and LiDAR sensors fail. 4D single-chip millimeter-wave radar systems, in particular, have drawn increasing attention thanks…

Robotics · Computer Science 2025-03-18 Jingqi Jiang , Shida Xu , Kaicheng Zhang , Jiyuan Wei , Jingyang Wang , Sen Wang

We propose quantum receivers with optical squeezing and photon-number-resolving detector (PNRD) for the near-optimal discrimination of quaternary phase-shift-keyed coherent state signals. The basic scheme is similar to the previous…

Quantum Physics · Physics 2013-04-25 Shuro Izumi , Masahiro Takeoka , Kazuhiro Ema , Masahide Sasaki

In this paper a novel data embedding technique in frequency domain has been proposed using Discrete Fourier Transform (DFT) for image authentication and secured message transmission based on hiding a large volume of data into gray images.…

Cryptography and Security · Computer Science 2012-12-17 Nabin Ghoshal , J. K. Mandal

We propose a quantum-enhanced lidar system to estimate a target's radial velocity which employs squeezed and frequency entangled signal and idler beams. We compare its performance against a classical protocol using a coherent state with the…

Quantum Physics · Physics 2022-12-21 Maximilian Reichert , Roberto Di Candia , Moe Z. Win , Mikel Sanz

Quantum key distribution (QKD) allows two users to communicate with theoretically provable secrecy by encoding information on photonic qubits. Current encoders are complex, however, which reduces their appeal for practical use and…

Machine learning applied to computer vision and signal processing is achieving results comparable to the human brain on specific tasks due to the great improvements brought by the deep neural networks (DNN). The majority of state-of-the-art…

Computer Vision and Pattern Recognition · Computer Science 2020-06-30 José Augusto Stuchi , Levy Boccato , Romis Attux