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Compared with contact-based fingerprint acquisition techniques, contactless acquisition has the advantages of less skin distortion, larger fingerprint area, and hygienic acquisition. However, perspective distortion is a challenge in…

Computer Vision and Pattern Recognition · Computer Science 2022-05-03 Zhe Cui , Jianjiang Feng , Jie Zhou

Dysarthric speech reconstruction (DSR) aims to transform dysarthric speech into normal speech by improving the intelligibility and naturalness. This is a challenging task especially for patients with severe dysarthria and speaking in…

Sound · Computer Science 2024-02-01 Xueyuan Chen , Yuejiao Wang , Xixin Wu , Disong Wang , Zhiyong Wu , Xunying Liu , Helen Meng

Speeding up the data acquisition is one of the central aims to advance tomographic imaging. On the one hand, this reduces motion artifacts due to undesired movements, and on the other hand this decreases the examination time for the…

Numerical Analysis · Mathematics 2015-01-20 Michael Sandbichler , Felix Krahmer , Thomas Berer , Peter Burgholzer , Markus Haltmeier

Digital holography numerically restores three-dimensional image information using optically captured diffractive waves. The required bandwidth is larger than that of hologram pixel at a closer distance in the Fresnel diffraction regime,…

Optics · Physics 2024-01-12 Byung Gyu Chae

Spiral acquisitions are preferred in real-time MRI because of their time efficiency. A fundamental limitation of spirals is image blurring due to off-resonance, which degrades image quality significantly at air-tissue boundaries. Here, we…

Image and Video Processing · Electrical Eng. & Systems 2020-06-02 Yongwan Lim , Shrikanth S Narayanan , Krishna S Nayak

Speed-of-sound is a biomechanical property for quantitative tissue differentiation, with great potential as a new ultrasound-based image modality. A conventional ultrasound array transducer can be used together with an acoustic mirror, or…

Computer Vision and Pattern Recognition · Computer Science 2018-07-20 Valery Vishnevskiy , Sergio J Sanabria , Orcun Goksel

Summarization of electronic health records (EHRs) can substantially minimize 'screen time' for both patients as well as medical personnel. In recent years summarization of EHRs have employed machine learning pipelines using state of the art…

Computation and Language · Computer Science 2024-01-04 Walid Saba , Suzanne Wendelken , James. Shanahan

The recurrent neural network transducer (RNN-T) has recently become the mainstream end-to-end approach for streaming automatic speech recognition (ASR). To estimate the output distributions over subword units, RNN-T uses a fully connected…

Audio and Speech Processing · Electrical Eng. & Systems 2022-01-26 Chao Zhang , Bo Li , Zhiyun Lu , Tara N. Sainath , Shuo-yiin Chang

Human speech is often accompanied by body gestures including arm and hand gestures. We present a method that reenacts a high-quality video with gestures matching a target speech audio. The key idea of our method is to split and re-assemble…

Computer Vision and Pattern Recognition · Computer Science 2022-07-26 Yang Zhou , Jimei Yang , Dingzeyu Li , Jun Saito , Deepali Aneja , Evangelos Kalogerakis

In this paper, we present an efficient neural network for end-to-end general purpose audio source separation. Specifically, the backbone structure of this convolutional network is the SUccessive DOwnsampling and Resampling of…

Audio and Speech Processing · Electrical Eng. & Systems 2021-05-14 Efthymios Tzinis , Zhepei Wang , Paris Smaragdis

Hearing aids (HAs) are widely used to provide personalized speech enhancement (PSE) services, improving the quality of life for individuals with hearing loss. However, HA performance significantly declines in noisy environments as it treats…

Audio and Speech Processing · Electrical Eng. & Systems 2025-09-10 Ye Ni , Ruiyu Liang , Xiaoshuai Hao , Jiaming Cheng , Qingyun Wang , Chengwei Huang , Cairong Zou , Wei Zhou , Weiping Ding , Björn W. Schuller

The paper deals with the hitherto neglected topic of audio dequantization. It reviews the state-of-the-art sparsity-based approaches and proposes several new methods. Convex as well as non-convex approaches are included, and all the…

Audio and Speech Processing · Electrical Eng. & Systems 2022-06-28 Pavel Záviška , Pavel Rajmic , Ondřej Mokrý

Photoacoustic tomography is a hybrid imaging technique that combines high optical tissue contrast with high ultrasound resolution. Direct reconstruction methods such as filtered backprojection, time reversal and least squares suffer from…

A common defect found when reproducing old vinyl and gramophone recordings with mechanical devices are the long pulses with significant low-frequency content caused by the interaction of the arm-needle system with deep scratches or even…

Audio and Speech Processing · Electrical Eng. & Systems 2024-11-12 Hugo Tremonte de Carvalho , Flávio Rainho Ávila , Luiz Wagner Pereira Biscainho

The evaluation of audio fingerprinting at a realistic scale is limited by the scarcity of large public music databases. We present an audio-free approach that synthesises latent fingerprints which approximate the distribution of real…

Sound · Computer Science 2025-09-24 Aditya Bhattacharjee , Marco Pasini , Emmanouil Benetos

Magnetic Resonance Fingerprinting (MRF) enables simultaneous mapping of multiple tissue parameters such as T1 and T2 relaxation times. The working principle of MRF relies on varying acquisition parameters pseudo-randomly, so that each…

Image and Video Processing · Electrical Eng. & Systems 2020-12-03 Refik Soyak , Ebru Navruz , Eda Ozgu Ersoy , Gastao Cruz , Claudia Prieto , Andrew P. King , Devrim Unay , Ilkay Oksuz

Heatmap regression (HR) has become one of the mainstream approaches for face alignment and has obtained promising results under constrained environments. However, when a face image suffers from large pose variations, heavy occlusions and…

Computer Vision and Pattern Recognition · Computer Science 2020-12-30 Jun Wan , Zhihui Lai , Jun Liu , Jie Zhou , Can Gao

Audio splicing is one of the most common manipulation techniques in the area of audio forensics. In this paper, the magnitudes of acoustic channel impulse response and ambient noise are proposed as the environmental signature. Specifically,…

Cryptography and Security · Computer Science 2014-11-27 Hong Zhao , Yifan Chen , Rui Wang , Hafiz Malik

Hyperspectral super-resolution (HSR) is a problem that aims to estimate an image of high spectral and spatial resolutions from a pair of co-registered multispectral (MS) and hyperspectral (HS) images, which have coarser spectral and spatial…

Image and Video Processing · Electrical Eng. & Systems 2020-10-28 Ruiyuan Wu , Wing-Kin Ma , Xiao Fu , Qiang Li

Learning meaningful representations from medical time series (MedTS) such as ECG or EEG signals is a critical challenge. These signals are often high-dimensional, variable-length and rife with noise. Existing self-supervised approaches,…

Machine Learning · Computer Science 2026-05-04 Huayu Li , ZhengXiao He , Xiwen Chen , Jingjing Wang , Siyuan Tian , Jinghao Wen , Ao Li