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With the growing importance of preventing the COVID-19 virus, face images obtained in most video surveillance scenarios are low resolution with mask simultaneously. However, most of the previous face super-resolution solutions can not…

Computer Vision and Pattern Recognition · Computer Science 2023-01-31 Guangwei Gao , Lei Tang , Fei Wu , Huimin Lu , Jian Yang

In the past decades, the excessive use of the last-generation GAN (Generative Adversarial Networks) models in computer vision has enabled the creation of artificial face images that are visually indistinguishable from genuine ones. These…

Cryptography and Security · Computer Science 2022-03-04 Ehsan Nowroozi , Mauro Conti , Yassine Mekdad

The advent of Generative Adversarial Networks (GANs) has brought about completely novel ways of transforming and manipulating pixels in digital images. GAN based techniques such as Image-to-Image translations, DeepFakes, and other automated…

Computer Vision and Pattern Recognition · Computer Science 2019-10-04 Lakshmanan Nataraj , Tajuddin Manhar Mohammed , Shivkumar Chandrasekaran , Arjuna Flenner , Jawadul H. Bappy , Amit K. Roy-Chowdhury , B. S. Manjunath

In this paper, we investigate several existing and a new state-of-the-art generative adversarial network-based (GAN) voice conversion method for enhancing dysarthric speech for improved dysarthric speech recognition. We compare key…

Sound · Computer Science 2022-01-14 Luke Prananta , Bence Mark Halpern , Siyuan Feng , Odette Scharenborg

Speech recognition technologies are gaining enormous popularity in various industrial applications. However, building a good speech recognition system usually requires large amounts of transcribed data, which is expensive to collect. To…

Computation and Language · Computer Science 2019-11-01 Dongwei Jiang , Xiaoning Lei , Wubo Li , Ne Luo , Yuxuan Hu , Wei Zou , Xiangang Li

Data augmentation is vital to the generalization ability and robustness of deep neural networks (DNNs) models. Existing augmentation methods for speaker verification manipulate the raw signal, which are time-consuming and the augmented…

Audio and Speech Processing · Electrical Eng. & Systems 2023-10-19 Yuanyuan Wang , Yang Zhang , Zhiyong Wu , Zhihan Yang , Tao Wei , Kun Zou , Helen Meng

Data augmentation is a widely used technique in classification to increase data used in training. It improves generalization and reduces amount of annotated human activity data needed for training which reduces labour and time needed with…

Machine Learning · Computer Science 2021-09-07 Sandeep Ramachandra , Alexander Hoelzemann , Kristof Van Laerhoven

Many speech applications require understanding aspects beyond the words being spoken, such as recognizing emotion, detecting whether the speaker is wearing a mask, or distinguishing real from synthetic speech. In this work, we introduce a…

Sound · Computer Science 2022-12-14 Joel Shor , Aren Jansen , Wei Han , Daniel Park , Yu Zhang

Recent advancement in Generative Adversarial Networks in speech synthesis domain[3],[2] have shown, that it's possible to train GANs [8] in a reliable manner for high quality coherent waveform generation from mel-spectograms. We propose…

Audio and Speech Processing · Electrical Eng. & Systems 2020-06-16 Luka Chkhetiani , Levan Bejanidze

Adversarial attacks hamper the functionality and accuracy of Deep Neural Networks (DNNs) by meddling with subtle perturbations to their inputs.In this work, we propose a new Mask-based Adversarial Defense scheme (MAD) for DNNs to mitigate…

Machine Learning · Computer Science 2022-04-27 Weizhen Xu , Chenyi Zhang , Fangzhen Zhao , Liangda Fang

The use of synthetic data generated by Generative Adversarial Networks (GANs) has become quite a popular method to do data augmentation for many applications. While practitioners celebrate this as an economical way to get more synthetic…

Machine Learning · Computer Science 2018-11-12 Niharika Jain , Lydia Manikonda , Alberto Olmo Hernandez , Sailik Sengupta , Subbarao Kambhampati

Speech enhancement in the time-frequency domain is often performed by estimating a multiplicative mask to extract clean speech. However, most neural network-based methods perform point estimation, i.e., their output consists of a single…

Audio and Speech Processing · Electrical Eng. & Systems 2022-05-06 Huajian Fang , Tal Peer , Stefan Wermter , Timo Gerkmann

To mitigate the negative effect of low quality training data on the performance of neural machine translation models, most existing strategies focus on filtering out harmful data before training starts. In this paper, we explore strategies…

Computation and Language · Computer Science 2021-03-01 Xinyi Wang , Ankur Bapna , Melvin Johnson , Orhan Firat

The outbreak of COVID-19 pandemic make people wear masks more frequently than ever. Current general face recognition system suffers from serious performance degradation,when encountering occluded scenes. The potential reason is that face…

Computer Vision and Pattern Recognition · Computer Science 2023-11-21 Zhaohui Wang , Sufang Zhang , Jianteng Peng , Xinyi Wang , Yandong Guo

Time series forecasting plays a pivotal role in critical domains such as energy management and financial markets. Although deep learning-based approaches (e.g., MLP, RNN, Transformer) have achieved remarkable progress, the prevailing…

Machine Learning · Computer Science 2025-10-24 Renzhao Liang , Sizhe Xu , Chenggang Xie , Jingru Chen , Feiyang Ren , Shu Yang , Takahiro Yabe

We present a cross-modal unsupervised framework for active speaker detection in media content such as TV shows and movies. Machine learning advances have enabled impressive performance in identifying individuals from speech and facial…

Image and Video Processing · Electrical Eng. & Systems 2022-09-27 Rahul Sharma , Shrikanth Narayanan

Masked (or absorbing) diffusion is actively explored as an alternative to autoregressive models for generative modeling of discrete data. However, existing work in this area has been hindered by unnecessarily complex model formulations and…

Machine Learning · Computer Science 2025-01-17 Jiaxin Shi , Kehang Han , Zhe Wang , Arnaud Doucet , Michalis K. Titsias

Recent studies on deepfake detection have achieved promising results when training and testing faces are from the same dataset. However, their results severely degrade when confronted with forged samples that the model has not yet seen…

Computer Vision and Pattern Recognition · Computer Science 2024-02-02 Tiewen Chen , Shanmin Yang , Shu Hu , Zhenghan Fang , Ying Fu , Xi Wu , Xin Wang

Generalizability to unseen forgery types is crucial for face forgery detectors. Recent works have made significant progress in terms of generalization by synthetic forgery data augmentation. In this work, we explore another path for…

Computer Vision and Pattern Recognition · Computer Science 2024-11-19 Jianwei Fei , Yunshu Dai , Huaming Wang , Zhihua Xia

Feature mapping using deep neural networks is an effective approach for single-channel speech enhancement. Noisy features are transformed to the enhanced ones through a mapping network and the mean square errors between the enhanced and…

Audio and Speech Processing · Electrical Eng. & Systems 2019-05-02 Zhong Meng , Jinyu Li , Yifan Gong , Biing-Hwang , Juang