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We propose a method for reconstructing a continuous light field of a target scene from a single observed image. Our method takes the best of two worlds: joint aperture-exposure coding for compressive light-field acquisition, and a neural…

计算机视觉与模式识别 · 计算机科学 2023-11-17 Yuya Ishikawa , Keita Takahashi , Chihiro Tsutake , Toshiaki Fujii

In ultrasound tomography, the speed of sound inside an object is estimated based on acoustic measurements carried out by sensors surrounding the object. An accurate forward model is a prominent factor for high-quality image reconstruction,…

图像与视频处理 · 电气工程与系统科学 2021-11-24 Janne Koponen , Timo Lähivaara , Jari Kaipio , Marko Vauhkonen

Precise calibration is a must for high reliance 3D computer vision algorithms. A challenging case is when the camera is behind a protective glass or transparent object: due to refraction, the image is heavily distorted; the pinhole camera…

计算机视觉与模式识别 · 计算机科学 2019-09-25 Szabolcs Pável , Csanád Sándor , Lehel Csató

Recovering a signal from its degraded measurements is a long standing challenge in science and engineering. Recently, zero-shot diffusion based methods have been proposed for such inverse problems, offering a posterior sampling based…

机器学习 · 计算机科学 2026-05-19 Roi Benita , Michael Elad , Joseph Keshet

The curvature regularities are well-known for providing strong priors in the continuity of edges, which have been applied to a wide range of applications in image processing and computer vision. However, these models are usually non-convex,…

数值分析 · 数学 2019-12-03 Qiuxiang Zhong , Ke Yin , Yuping Duan

We generalized to higher dimensions the notions of optical orthogonal codes. We establish uper bounds on the capacity of general $ n $-dimensional OOCs, and on specific types of ideal codes (codes with zero off-peak autocorrelation). The…

组合数学 · 数学 2022-07-18 Tim Alderson

In this paper, we present the optimal use of coded signals in diverging wave transmission for fast ultrasonic imaging. The performance of coded imaging with diverging waves, quantified by SNR, CNR, speckle power and target signal strength,…

信号处理 · 电气工程与系统科学 2021-04-22 Yasin Kumru , Hayrettin Köymen

What makes a good viewpoint? The quality of the data used to learn 3D reconstructions is crucial for enabling efficient and accurate scene modeling. We study the active view selection problem and develop a principled analysis that yields a…

计算机视觉与模式识别 · 计算机科学 2026-04-08 Timothy Chen , Adam Dai , Maximilian Adang , Grace Gao , Mac Schwager

The enormous energy demand of artificial intelligence is driving the development of alternative hardware for deep learning. Physical neural networks try to exploit physical systems to perform machine learning more efficiently. In…

Learning-based image compression methods have emerged as state-of-the-art, showcasing higher performance compared to conventional compression solutions. These data-driven approaches aim to learn the parameters of a neural network model…

多媒体 · 计算机科学 2024-03-20 Shima Mohammadi , Yaojun Wu , João Ascenso

Number-resolving photo-detection is necessary for many quantum optics experiments, especially in the application of entangled state preparation. Several schemes have been proposed for approximating number-resolving photo-detection using…

量子物理 · 物理学 2008-05-19 Peter P. Rohde , James G. Webb , Elanor H. Huntington , Timothy C. Ralph

The fast algorithms in Fourier optics have invigorated multifunctional device design and advanced imaging technologies. However, the necessity for fast computations has led to limitations in the widely used conventional Fourier methods,…

应用物理 · 物理学 2024-06-25 Zhi Li , Xuhao Luo , Jing Wang , Xin Yuan , Dongdong Teng , Qiang Song , Huigao Duan

In Fourier ptychography, multiple low resolution images are captured and subsequently combined computationally into a high-resolution, large-field of view micrograph. A theoretical image-formation model based on the assumption of plane-wave…

光学 · 物理学 2022-06-22 Tomas Aidukas , Lars Loetgering , Andrew Robert Harvey

We consider the problem of optimization of an effective trapping potential in a nanostructure with a quasi-one-dimensional geometry. The optimization is performed to achieve certain target optical properties of the system. We formulate and…

材料科学 · 物理学 2015-05-13 Ilya Grigorenko , Herschel Rabitz , Alaxander Balatsky

Generative image codecs aim to optimize perceptual quality, producing realistic and detailed reconstructions. However, they often overlook a key property of human vision: our tendency to focus on particular aspects of a visual scene (e.g.,…

图像与视频处理 · 电气工程与系统科学 2026-04-02 Lucas Relic , Roberto Azevedo , Yang Zhang , Stephan Mandt , Markus Gross , Christopher Schroers

While recent neural codecs achieve strong performance at low bitrates when optimized for perceptual quality, their effectiveness deteriorates significantly under ultra-low bitrate conditions. To mitigate this, generative compression methods…

计算机视觉与模式识别 · 计算机科学 2026-02-06 Chuqin Zhou , Xiaoyue Ling , Yunuo Chen , Jincheng Dai , Guo Lu , Wenjun Zhang

Quantum bits, or qubits, are the fundamental building blocks of present quantum computers. Hence, it is important to be able to characterize the state of a qubit as accurately as possible. By evaluating the qubit characterization problem…

量子物理 · 物理学 2024-02-27 Bacui Li , Lorcan O. Conlon , Ping Koy Lam , Syed M. Assad

Fault tolerance is a prerequisite for scalable quantum computing. Architectures based on 2D topological codes are effective for near-term implementations of fault tolerance. To obtain high performance with these architectures, we require a…

量子物理 · 物理学 2018-10-23 Ben Criger , Imran Ashraf

We present a foundational, scalable algorithm architecture for processing data from aperture synthesis radio telescopes. The analysis leading to the architecture is rooted in the theory of aperture synthesis, signal processing and numerical…

天体物理仪器与方法 · 物理学 2026-04-28 S. Bhatnagar , U. Rau , M. Hsieh , J. Kern , R. Xue

We frame the problem of selecting an optimal audio encoding scheme as a supervised learning task. Through uniform convergence theory, we guarantee approximately optimal codec selection while controlling for selection bias. We present…

声音 · 计算机科学 2018-12-20 Clayton Sanford , Cyrus Cousins , Eli Upfal