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Discrete transforms such as the discrete Fourier transform (DFT) or the discrete Hartley transform (DHT) furnish an indispensable tool in signal processing. The successful application of transform techniques relies on the existence of the…

Data Structures and Algorithms · Computer Science 2015-08-27 H. M. de Oliveira , R. J. Cintra , R. M. Campello de Souza

Benefiting from its single-photon sensitivity, single-photon avalanche diode (SPAD) array has been widely applied in various fields such as fluorescence lifetime imaging and quantum computing. However, large-scale high-fidelity…

State-of-the-art person re-identification systems that employ a triplet based deep network suffer from a poor generalization capability. In this paper, we propose a four stream Siamese deep convolutional neural network for person…

Computer Vision and Pattern Recognition · Computer Science 2018-12-24 Amena Khatun , Simon Denman , Sridha Sridharan , Clinton Fookes

The Fast Fourier Transform(FFT) is a classic signal processing algorithm that is utilized in a wide range of applications. For image processing, FFT computes on every pixel's value of an image, regardless of their properties in frequency…

Signal Processing · Electrical Eng. & Systems 2020-02-25 Sheng Shi , Runkai Yang , Haihang You

Color-guided depth super-resolution (DSR) is an encouraging paradigm that enhances a low-resolution (LR) depth map guided by an extra high-resolution (HR) RGB image from the same scene. Existing methods usually use interpolation to upscale…

Computer Vision and Pattern Recognition · Computer Science 2023-06-02 Wuxuan Shi , Mang Ye , Bo Du

In this paper, we propose a basic RGB single-mode model based on weakly supervised training under pseudo labels, which performs high-precision authenticity identification under multi-scene typical target remote sensing images. Due to the…

Image and Video Processing · Electrical Eng. & Systems 2024-05-07 Yipeng Lin , Xinger Li , Yang Yang

In this paper, we consider subaperture-based approaches for the digital aberration correction (DAC) of optical coherence tomography (OCT) images. In particular, we introduce a mathematical framework for describing this class of approaches,…

In measuring the power spectrum of the distribution of large numbers of dark matter particles in simulations, or galaxies in observations, one has to use Fast Fourier Transforms (FFT) for calculational efficiency. However, because of the…

Astrophysics · Physics 2009-11-13 Weiguang Cui , Lei Liu , Xiaohu Yang , Yu Wang , Longlong Feng , Volker Springel

Detecting manipulated media has now become a pressing issue with the recent rise of deepfakes. Most existing approaches fail to generalize across diverse datasets and generation techniques. We thus propose a novel ensemble framework,…

Computer Vision and Pattern Recognition · Computer Science 2025-10-07 Vrushank Ahire , Aniruddh Muley , Shivam Zample , Siddharth Verma , Pranav Menon , Surbhi Madan , Abhinav Dhall

Nonlinear Fourier division Multiplexing (NFDM) can be realized from modulating the discrete nonlinear spectrum of an $N$-solitary waveform. To generate an $N$-solitary waveform from desired discrete spectrum (eigenvalue and discrete…

Numerical Analysis · Mathematics 2016-05-23 Vahid Aref

In this paper, the design, realization, and demonstration of a broadband millimeter-wave imaging system based on the synthetic aperture radar technique (SAR) are discussed. The proposed system, operating within the frequency range of…

Applied Physics · Physics 2022-06-01 Fahimeh Sepehripour , Ahmad Shafiei Alavijeh , Mohammad Fakharzadeh , Amin Khavasi

As digital content can be copied easily, Copyright infringement has become a concern nowadays. Providing a solution to prevent the abuse of such contents is very necessary. One of the most common methods to solve this problem is…

Image and Video Processing · Electrical Eng. & Systems 2021-05-04 Shiva Sattarpoor , Hamid Barati

We proposed a method to achieve superresolved optical imaging without beating the diffraction limit of light. This is achieved by magnifying the ideal optical image of the object through higher-order spatial frequency generation while…

Optics · Physics 2016-08-08 Zhixiang Li , Jianji Liu , Guoquan Zhang

In coded aperture snapshot spectral compressive imaging (CASSI) systems, hyperspectral image (HSI) reconstruction methods are employed to recover the spatial-spectral signal from a compressed measurement. Among these algorithms, deep…

Image and Video Processing · Electrical Eng. & Systems 2022-10-18 Yuanhao Cai , Jing Lin , Haoqian Wang , Xin Yuan , Henghui Ding , Yulun Zhang , Radu Timofte , Luc Van Gool

With the popularization of digital information technology, the reversible data hiding in encrypted images (RDHEI) has gradually become the research hotspot of privacy protection in cloud storage. As a technology which can embed additional…

Multimedia · Computer Science 2021-10-11 Wenjing Ma , Youqing Wu , Zhaoxia Yin

The challenge of deblurring fingerphoto images, or generating a sharp fingerphoto from a given blurry one, is a significant problem in the realm of computer vision. To address this problem, we propose a fingerphoto deblurring architecture…

Computer Vision and Pattern Recognition · Computer Science 2024-07-24 David Keaton , Amol S. Joshi , Jeremy Dawson , Nasser M. Nasrabadi

Face swapping has gained significant attention for its varied applications. Most previous face swapping approaches have relied on the seesaw game training scheme, also known as the target-oriented approach. However, this often leads to…

Computer Vision and Pattern Recognition · Computer Science 2024-07-23 Jaeseong Lee , Junha Hyung , Sohyun Jeong , Jaegul Choo

Deepfake detectors are typically trained on large sets of pristine and generated images, resulting in limited generalization capacity; they excel at identifying deepfakes created through methods encountered during training but struggle with…

Computer Vision and Pattern Recognition · Computer Science 2024-03-21 Davide Alessandro Coccomini , Roberto Caldelli , Claudio Gennaro , Giuseppe Fiameni , Giuseppe Amato , Fabrizio Falchi

In this paper, an efficiently DWT-based watermarking technique is proposed to embed signatures in images to attest the owner identification and discourage the unauthorized copying. This paper deals with a fuzzy inference filter to choose…

Multimedia · Computer Science 2010-07-30 Ming-Shing Hsieh

As Facial Recognition System(FRS) is widely applied in areas such as access control and mobile payments due to its convenience and high accuracy. The security of facial recognition is also highly regarded. The Face anti-spoofing system(FAS)…

Computer Vision and Pattern Recognition · Computer Science 2023-08-10 Qiushi Guo