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Fingerprint presentation attack detection is becoming an increasingly challenging problem due to the continuous advancement of attack preparation techniques, which generate realistic-looking fake fingerprint presentations. In this work,…

Computer Vision and Pattern Recognition · Computer Science 2020-06-22 Leonidas Spinoulas , Hengameh Mirzaalian , Mohamed Hussein , Wael AbdAlmageed

The Deep Underground Neutrino Experiment (DUNE) is a long-baseline neutrino oscillation experiment aiming to measure the oscillation parameters with an unprecedented precision that will allow determining the CP violation phase in the…

High Energy Physics - Experiment · Physics 2024-12-20 J. Soto-Oton

The elemental Nb is mainly investigated for its eminent superconducting properties. In contrary, we report of a relatively unexplored property, namely, its superior optoelectronic property in reduced dimension. We demonstrate here that…

Intensity interferometry is a well known method in astronomy. Recently, a related method called incoherent diffractive imaging (IDI) was proposed to apply intensity correlations of x-ray fluorescence radiation to determine the 3D…

Optics · Physics 2020-08-27 Fabian Trost , Kartik Ayyer , Henry Chapman

Electric Network Frequency (ENF) acts as a fingerprint in multimedia forensics applications. In indoor environments, ENF variations affect the intensity of light sources connected to power mains. Accordingly, the light intensity variations…

Computer Vision and Pattern Recognition · Computer Science 2023-11-27 Christos Moysiadis , Georgios Karantaidis , Constantine Kotropoulos

A dual-operation mode SNSPD is proposed. In the conventional Geiger mode, the sensor operates at temperatures well below the critical temperature, Tc, working as an event counter without sensitivity to the number of photons impinging the…

In recent years fingerprinting of various physical and logical devices has been proposed with the goal of uniquely identifying users or devices of mainstream IT systems such as PCs, Laptops and smart phones. On the other hand, the…

Cryptography and Security · Computer Science 2017-12-06 Chuadhry Mujeeb Ahmed , Aditya Mathur , Martin Ochoa

Pulse shape discrimination (PSD) is widely used in particle and nuclear physics. Specifically in liquid scintillator detectors, PSD facilitates the classification of different particle types based on their energy deposition patterns. This…

High Energy Physics - Experiment · Physics 2024-04-23 Jie Cheng , Xiao-Jie Luo , Gao-Song Li , Yu-Feng Li , Ze-Peng Li , Hao-Qi Lu , Liang-Jian Wen , Michael Wurm , Yi-Yu Zhang

The ultimate sensitivity of optical detection is limited by the signal-to-noise ratio (SNR). The first part of the paper shows that coherence plays an important role in the noise analysis. Although interference between an auxiliary wave and…

Optics · Physics 2007-05-23 Taras Plakhotnik

Artificial intelligence has recently been widely used in computational imaging. The deep neural network (DNN) improves the signal-to-noise ratio of the retrieved images, whose quality is otherwise corrupted due to the low sampling ratio or…

Image and Video Processing · Electrical Eng. & Systems 2022-12-16 Wenhan Ren , Xiaoyu Nie , Tao Peng , Marlan O. Scully

A machine-learning non-contact method to determine the temperature of a laser gain medium via its laser emission with a trained few-layer neural net model is presented. The training of the feed-forward Neural Network (NN) enables the…

Optics · Physics 2024-10-31 Jakob Mannstadt , Arash Rahimi-Iman

Three-dimensional digital subtraction angiography (3D-DSA) is a widely adopted technique for clinical evaluation of contrast-enhanced vasculatures. The distribution of a contrast agent such as iodine is often estimated via temporal…

Medical Physics · Physics 2023-10-18 Xiaoxuan Zhang , Xiao Jiang , Matthew Tivnan , J. Webster Stayman , Grace Gang

Similar to the diode in electronics, a thermal diode is a two-terminal device that allows heat to transfer easier in one direction (forward bias) than in the opposite direction (reverse bias). Unlike conductive and convective thermal…

Applied Physics · Physics 2021-08-17 Dudong Feng , Shannon K. Yee , Zhuomin M. Zhang

Micro- and nanothermometry enable precise temperature monitoring and control at the micro- and nanoscale, and have become essential diagnostic tools in applications ranging from high-power microelectronics to biosensing and nanomedicine.…

Materials Science · Physics 2025-10-28 Md Shakhawath Hossain , Dylan G. Stone , G. Landry , Xiaoxue Xu , Carlo Bradac , Toan Trong Tran

We engage in the relatively underexplored task named thermal infrared image enhancement. Existing infrared image enhancement methods primarily focus on tackling individual degradations, such as noise, contrast, and blurring, making it…

Computer Vision and Pattern Recognition · Computer Science 2025-10-13 Jinyuan Liu , Zihang Chen , Zhu Liu , Zhiying Jiang , Long Ma , Xin Fan , Risheng Liu

In low light or short-exposure photography the image is often corrupted by noise. While longer exposure helps reduce the noise, it can produce blurry results due to the object and camera motion. The reconstruction of a noise-less image is…

Computer Vision and Pattern Recognition · Computer Science 2021-03-12 Talmaj Marinč , Vignesh Srinivasan , Serhan Gül , Cornelius Hellge , Wojciech Samek

We propose a simple method for estimating noise level from a single color image. In most image-denoising algorithms, an accurate noise-level estimate results in good denoising performance; however, it is difficult to estimate noise level…

Computer Vision and Pattern Recognition · Computer Science 2019-04-05 Akihiro Nakamura , Michihiro Kobayashi

We demonstrate room temperature detection of single 20 nm super-paramagnetic nanoparticles (SPNs) with a wide-field optical microscope platform suitable for biological integration. The particles are made of magnetite (Fe3O4) and are thus…

Mesoscale and Nanoscale Physics · Physics 2015-06-19 Michael Gould , Russell Barbour , Nicole Thomas , Hamed Arami , Kannan M. Krishnan , Kai-Mei Fu

Ab initio based accurate simulation of phonon-assisted optical spectra of semiconductors at finite temperatures remains a formidable challenge, as it requires large supercells for phonon sampling and computationally expensive high-accuracy…

Materials Science · Physics 2025-05-07 Qiangqiang Gu , Shishir Kumar Pandey , Zhanghao Zhouyin

Deep Neural Networks (DNNs) have been widely used for illumination estimation, which is time-consuming and requires sensor-specific data collection. Our proposed method uses a dual-mapping strategy and only requires a simple white point…

Computer Vision and Pattern Recognition · Computer Science 2023-11-21 Shuwei Yue , Minchen Wei