Search Results for author: Paolo Bestagini

Found 38 papers, 15 papers with code

FairSSD: Understanding Bias in Synthetic Speech Detectors

1 code implementation17 Apr 2024 Amit Kumar Singh Yadav, Kratika Bhagtani, Davide Salvi, Paolo Bestagini, Edward J. Delp

In this work, we examine bias in existing synthetic speech detectors to determine if they will unfairly target a particular gender, age and accent group.

Fairness

Back to the Future: GNN-based NO$_2$ Forecasting via Future Covariates

no code implementations8 Apr 2024 Antonio Giganti, Sara Mandelli, Paolo Bestagini, Umberto Giuriato, Alessandro D'Ausilio, Marco Marcon, Stefano Tubaro

Remarkably, we find that conditioning on future weather information has a greater impact than considering past traffic conditions.

Spectrogram-Based Detection of Auto-Tuned Vocals in Music Recordings

1 code implementation8 Mar 2024 Mahyar Gohari, Paolo Bestagini, Sergio Benini, Nicola Adami

In the domain of music production and audio processing, the implementation of automatic pitch correction of the singing voice, also known as Auto-Tune, has significantly transformed the landscape of vocal performance.

All-for-One and One-For-All: Deep learning-based feature fusion for Synthetic Speech Detection

no code implementations28 Jul 2023 Daniele Mari, Davide Salvi, Paolo Bestagini, Simone Milani

Recent advances in deep learning and computer vision have made the synthesis and counterfeiting of multimedia content more accessible than ever, leading to possible threats and dangers from malicious users.

Face Swapping Synthetic Speech Detection

Super-Resolution of BVOC Emission Maps Via Domain Adaptation

1 code implementation22 Jun 2023 Antonio Giganti, Sara Mandelli, Paolo Bestagini, Marco Marcon, Stefano Tubaro

In our work, we aim at super-resolving low resolution emission maps derived from satellite observations by leveraging the information of emission maps obtained through numerical simulations.

Domain Adaptation Super-Resolution

Multi-BVOC Super-Resolution Exploiting Compounds Inter-Connection

no code implementations23 May 2023 Antonio Giganti, Sara Mandelli, Paolo Bestagini, Marco Marcon, Stefano Tubaro

In this work, we propose a strategy to super-resolve coarse BVOC emission maps by simultaneously exploiting the contributions of different compounds.

Image Super-Resolution

DSVAE: Interpretable Disentangled Representation for Synthetic Speech Detection

no code implementations6 Apr 2023 Amit Kumar Singh Yadav, Kratika Bhagtani, Ziyue Xiang, Paolo Bestagini, Stefano Tubaro, Edward J. Delp

We also visualize the representation obtained from DSVAE for 17 different speech synthesizers and verify that they are indeed interpretable and discriminate bona fide and synthetic speech from each of the synthesizers.

Representation Learning Synthetic Speech Detection

Super-Resolution of BVOC Maps by Adapting Deep Learning Methods

no code implementations15 Feb 2023 Antonio Giganti, Sara Mandelli, Paolo Bestagini, Marco Marcon, Stefano Tubaro

Biogenic Volatile Organic Compounds (BVOCs) play a critical role in biosphere-atmosphere interactions, being a key factor in the physical and chemical properties of the atmosphere and climate.

Image Super-Resolution

Combining Automatic Speaker Verification and Prosody Analysis for Synthetic Speech Detection

no code implementations31 Oct 2022 Luigi Attorresi, Davide Salvi, Clara Borrelli, Paolo Bestagini, Stefano Tubaro

The rapid spread of media content synthesis technology and the potentially damaging impact of audio and video deepfakes on people's lives have raised the need to implement systems able to detect these forgeries automatically.

Audio Compression Face Swapping +3

H4VDM: H.264 Video Device Matching

1 code implementation20 Oct 2022 Ziyue Xiang, Paolo Bestagini, Stefano Tubaro, Edward J. Delp

We denote our proposed technique as H. 264 Video Device Matching (H4VDM).

Video Forensics

An Overview on the Generation and Detection of Synthetic and Manipulated Satellite Images

no code implementations19 Sep 2022 Lydia Abady, Edoardo Daniele Cannas, Paolo Bestagini, Benedetta Tondi, Stefano Tubaro, Mauro Barni

While we focus mostly on forensic techniques explicitly tailored to the detection of AI-generated synthetic contents, we also review some methods designed for general splicing detection, which can in principle also be used to spot AI manipulate images

Misinformation

Speaker-Independent Microphone Identification in Noisy Conditions

no code implementations23 Jun 2022 Antonio Giganti, Luca Cuccovillo, Paolo Bestagini, Patrick Aichroth, Stefano Tubaro

This work proposes a method for source device identification from speech recordings that applies neural-network-based denoising, to mitigate the impact of counter-forensics attacks using noise injection.

Denoising

Splicing Detection and Localization In Satellite Imagery Using Conditional GANs

no code implementations3 May 2022 Emily R. Bartusiak, Sri Kalyan Yarlagadda, David Güera, Paolo Bestagini, Stefano Tubaro, Fengqing M. Zhu, Edward J. Delp

In this paper, we describe the use of a Conditional Generative Adversarial Network (cGAN) to identify the presence of such spliced forgeries within satellite images.

Generative Adversarial Network Image Manipulation

Detecting GAN-generated Images by Orthogonal Training of Multiple CNNs

1 code implementation4 Mar 2022 Sara Mandelli, Nicolò Bonettini, Paolo Bestagini, Stefano Tubaro

For this reason, detecting if an image is an actual photograph or has been synthetically generated is becoming an urgent necessity.

Amplitude SAR Imagery Splicing Localization

no code implementations7 Jan 2022 Edoardo Daniele Cannas, Nicolò Bonettini, Sara Mandelli, Paolo Bestagini, Stefano Tubaro

Synthetic Aperture Radar (SAR) images are a valuable asset for a wide variety of tasks.

Forensic Analysis of Synthetically Generated Western Blot Images

no code implementations16 Dec 2021 Sara Mandelli, Davide Cozzolino, Edoardo D. Cannas, Joao P. Cardenuto, Daniel Moreira, Paolo Bestagini, Walter J. Scheirer, Anderson Rocha, Luisa Verdoliva, Stefano Tubaro, Edward J. Delp

As a matter of fact, the generation of synthetic content is not restricted to multimedia data like videos, photographs or audio sequences, but covers a significantly vast area that can include biological images as well, such as western blot and microscopic images.

Binary Classification

What's wrong with this video? Comparing Explainers for Deepfake Detection

no code implementations12 May 2021 Samuele Pino, Mark James Carman, Paolo Bestagini

Deepfakes are computer manipulated videos where the face of an individual has been replaced with that of another.

DeepFake Detection Face Swapping

DIPPAS: A Deep Image Prior PRNU Anonymization Scheme

1 code implementation7 Dec 2020 Francesco Picetti, Sara Mandelli, Paolo Bestagini, Vincenzo Lipari, Stefano Tubaro

A typical trace exploited for source device identification is the Photo Response Non-Uniformity (PRNU), a noise pattern left by the device on the acquired images.

Image Forensics

Training Strategies and Data Augmentations in CNN-based DeepFake Video Detection

no code implementations16 Nov 2020 Luca Bondi, Edoardo Daniele Cannas, Paolo Bestagini, Stefano Tubaro

The fast and continuous growth in number and quality of deepfake videos calls for the development of reliable detection systems capable of automatically warning users on social media and on the Internet about the potential untruthfulness of such contents.

Data Augmentation Face Swapping

Training CNNs in Presence of JPEG Compression: Multimedia Forensics vs Computer Vision

no code implementations25 Sep 2020 Sara Mandelli, Nicolò Bonettini, Paolo Bestagini, Stefano Tubaro

In this work, we focus on the effect that JPEG has on CNN training considering different computer vision and forensic image classification problems.

Face Detection General Classification +2

FOCAL: A Forgery Localization Framework based on Video Coding Self-Consistency

no code implementations24 Aug 2020 Sebastiano Verde, Paolo Bestagini, Simone Milani, Giancarlo Calvagno, Stefano Tubaro

Forgery operations on video contents are nowadays within the reach of anyone, thanks to the availability of powerful and user-friendly editing software.

A Modified Fourier-Mellin Approach for Source Device Identification on Stabilized Videos

1 code implementation20 May 2020 Sara Mandelli, Fabrizio Argenti, Paolo Bestagini, Massimo Iuliani, Alessandro Piva, Stefano Tubaro

To decide whether a digital video has been captured by a given device, multimedia forensic tools usually exploit characteristic noise traces left by the camera sensor on the acquired frames.

On the use of Benford's law to detect GAN-generated images

1 code implementation16 Apr 2020 Nicolò Bonettini, Paolo Bestagini, Simone Milani, Stefano Tubaro

The advent of Generative Adversarial Network (GAN) architectures has given anyone the ability of generating incredibly realistic synthetic imagery.

GAN image forensics Generative Adversarial Network

Video Face Manipulation Detection Through Ensemble of CNNs

2 code implementations16 Apr 2020 Nicolò Bonettini, Edoardo Daniele Cannas, Sara Mandelli, Luca Bondi, Paolo Bestagini, Stefano Tubaro

In this paper, we tackle the problem of face manipulation detection in video sequences targeting modern facial manipulation techniques.

 Ranked #1 on DeepFake Detection on FaceForensics++ (using extra training data)

DeepFake Detection Detecting Image Manipulation +4

CNN-based fast source device identification

1 code implementation31 Jan 2020 Sara Mandelli, Davide Cozzolino, Paolo Bestagini, Luisa Verdoliva, Stefano Tubaro

Source identification is an important topic in image forensics, since it allows to trace back the origin of an image.

Image Forensics

An In-Depth Study on Open-Set Camera Model Identification

no code implementations11 Apr 2019 Pedro Ribeiro Mendes Júnior, Luca Bondi, Paolo Bestagini, Stefano Tubaro, Anderson Rocha

To deal with this issue, in this paper, we present the first in-depth study on the possibility of solving the camera model identification problem in open-set scenarios.

Open Set Learning

Facing Device Attribution Problem for Stabilized Video Sequences

1 code implementation5 Nov 2018 Sara Mandelli, Paolo Bestagini, Luisa Verdoliva, Stefano Tubaro

Specifically, we propose: (i) a strategy to extract the characteristic fingerprint of a device, starting from either a set of images or stabilized video sequences; (ii) a strategy to match a stabilized video sequence with a given fingerprint in order to solve the device attribution problem.

Multimedia

Landmine Detection Using Autoencoders on Multi-polarization GPR Volumetric Data

1 code implementation2 Oct 2018 Paolo Bestagini, Federico Lombardi, Maurizio Lualdi, Francesco Picetti, Stefano Tubaro

This method works in an anomaly detection framework, indeed we only train the autoencoder on GPR data acquired on landmine-free areas.

Anomaly Detection GPR +3

A Counter-Forensic Method for CNN-Based Camera Model Identification

no code implementations6 May 2018 David Güera, Yu Wang, Luca Bondi, Paolo Bestagini, Stefano Tubaro, Edward J. Delp

We examine in this paper the problem of identifying the camera model or type that was used to take an image and that can be spoofed.

Reliability Map Estimation For CNN-Based Camera Model Attribution

no code implementations4 May 2018 David Güera, Sri Kalyan Yarlagadda, Paolo Bestagini, Fengqing Zhu, Stefano Tubaro, Edward J. Delp

This refers to the problem of detecting which camera model has been used to acquire an image by only exploiting pixel information.

First Steps Toward Camera Model Identification with Convolutional Neural Networks

1 code implementation3 Mar 2016 Luca Bondi, Luca Baroffio, David Güera, Paolo Bestagini, Edward J. Delp, Stefano Tubaro

Detecting the camera model used to shoot a picture enables to solve a wide series of forensic problems, from copyright infringement to ownership attribution.

General Classification Image Forensics

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