no code implementations • 10 Dec 2024 • Yik Lung Pang, Alessio Xompero, Changjae Oh, Andrea Cavallaro
Jointly estimating hand and object shape ensures the success of the robot grasp in human-to-robot handovers.
no code implementations • 17 Oct 2024 • Olena Hrynenko, Andrea Cavallaro
We show that the proposed privacy personas statistically differ from each other.
1 code implementation • 27 Sep 2024 • Alina Elena Baia, Andrea Cavallaro
Predicting and explaining the private information contained in an image in human-understandable terms is a complex and contextual task.
1 code implementation • 3 Sep 2024 • Tommaso Apicella, Alessio Xompero, Paolo Gastaldo, Andrea Cavallaro
Visual affordance segmentation identifies image regions of an object an agent can interact with.
no code implementations • 24 Jun 2024 • Jaime Corsetti, Davide Boscaini, Francesco Giuliari, Changjae Oh, Andrea Cavallaro, Fabio Poiesi
We use the textual prompt to identify the unseen object in the scenes and then obtain high-resolution multi-scale features.
1 code implementation • 2 May 2024 • Alessio Xompero, Myriam Bontonou, Jean-Michel Arbona, Emmanouil Benetos, Andrea Cavallaro
To explain the decision of these models, we use feature-attribution to identify and quantify which objects (and which of their features) are more relevant to privacy classification with respect to a reference input (i. e., no objects localised in an image) predicted as public.
no code implementations • 2 May 2024 • Yik Lung Pang, Changjae Oh, Andrea Cavallaro
In contrast, sparse multi-view methods can take advantage of the additional views to tackle occlusion, while keeping the computational cost low compared to dense multi-view methods.
no code implementations • CVPR 2024 • Jaime Corsetti, Davide Boscaini, Changjae Oh, Andrea Cavallaro, Fabio Poiesi
We introduce the new setting of open-vocabulary object 6D pose estimation, in which a textual prompt is used to specify the object of interest.
no code implementations • 30 Oct 2023 • Darya Baranouskaya, Andrea Cavallaro
Privacy is a complex, subjective and contextual concept that is difficult to define.
no code implementations • 30 Sep 2023 • Alina Elena Baia, Valentina Poggioni, Andrea Cavallaro
We show that we can create adversarial images that manipulate the explanations of an activity recognition model by having access only to its final output.
2 code implementations • 22 Aug 2023 • Tommaso Apicella, Alessio Xompero, Edoardo Ragusa, Riccardo Berta, Andrea Cavallaro, Paolo Gastaldo
To train the model, we annotated the visual affordances of an existing dataset with mixed-reality images of hand-held containers in third-person (exocentric) images.
no code implementations • 18 Nov 2022 • Xavier Weber, Alessio Xompero, Andrea Cavallaro
In this paper, we present a mixed-reality dataset of hand-occluded containers for category-level 6D object pose and size estimation.
1 code implementation • 20 Oct 2022 • Dimitrios Stoidis, Andrea Cavallaro
People may be unaware of the privacy risks of uploading an image online.
no code implementations • 12 Sep 2022 • Girmaw Abebe Tadesse, Oliver Bent, Komminist Weldemariam, Md. Abrar Istiak, Taufiq Hasan, Andrea Cavallaro
Body-worn first-person vision (FPV) camera enables to extract a rich source of information on the environment from the subject's viewpoint.
no code implementations • 24 Aug 2022 • Alessio Xompero, Andrea Cavallaro
We propose a decentralised view-overlap recognition framework that operates across freely moving cameras without the need of a reference 3D map.
no code implementations • 12 Jul 2022 • Chau Yi Li, Andrea Cavallaro
The appearance of objects in underwater images is degraded by the selective attenuation of light, which reduces contrast and causes a colour cast.
1 code implementation • 3 Jul 2022 • Dimitrios Stoidis, Andrea Cavallaro
Our voice encodes a uniquely identifiable pattern which can be used to infer private attributes, such as gender or identity, that an individual might wish not to reveal when using a speech recognition service.
no code implementations • 1 Jun 2022 • Chau Yi Li, Ricardo Sánchez-Matilla, Ali Shahin Shamsabadi, Riccardo Mazzon, Andrea Cavallaro
We refer to this property as the reversibility of an adversarial attack, and quantify reversibility as the accuracy in retrieving the original class or the true class of an adversarial example.
no code implementations • 8 Mar 2022 • Apostolos Modas, Andrea Cavallaro, Pascal Frossard
We address the problem of distribution shifts in test-time data with a principled data augmentation scheme for the task of content-level classification.
1 code implementation • 5 Mar 2022 • Chau Yi Li, Andrea Cavallaro
However, the features extracted by a deep neural network that was trained to predict a specific, consensual attribute (e. g. emotion) may also encode and thus reveal information about private, protected attributes (e. g. age or gender).
1 code implementation • 18 Feb 2022 • Vandana Rajan, Alessio Brutti, Andrea Cavallaro
Generally, models that fuse complementary information from multiple modalities outperform their uni-modal counterparts.
no code implementations • 2 Aug 2021 • Vandana Rajan, Alessio Brutti, Andrea Cavallaro
For this reason, we aim to improve the performance of uni-modal affect recognition models by transferring knowledge from a better-performing (or stronger) modality to a weaker modality during training.
no code implementations • 27 Jul 2021 • Alessio Xompero, Santiago Donaher, Vladimir Iashin, Francesca Palermo, Gökhan Solak, Claudio Coppola, Reina Ishikawa, Yuichi Nagao, Ryo Hachiuma, Qi Liu, Fan Feng, Chuanlin Lan, Rosa H. M. Chan, Guilherme Christmann, Jyun-Ting Song, Gonuguntla Neeharika, Chinnakotla Krishna Teja Reddy, Dinesh Jain, Bakhtawar Ur Rehman, Andrea Cavallaro
In this paper, we present a range of methods and an open framework to benchmark acoustic and visual perception for the estimation of the capacity of a container, and the type, mass, and amount of its content.
no code implementations • 22 Apr 2021 • Dimitrios Stoidis, Andrea Cavallaro
Besides its linguistic content, our speech is rich in biometric information that can be inferred by classifiers.
no code implementations • 8 Feb 2021 • Apostolos Modas, Alessio Xompero, Ricardo Sanchez-Matilla, Pascal Frossard, Andrea Cavallaro
We investigate the problem of classifying - from a single image - the level of content in a cup or a drinking glass.
no code implementations • 17 Jan 2021 • Michael Clayton, Lin Wang, Andrew McPherson, Andrea Cavallaro
Microphone array techniques can improve the acoustic sensing performance on drones, compared to the use of a single microphone.
no code implementations • 22 Dec 2020 • Chau Yi Li, Riccardo Mazzon, Andrea Cavallaro
The growing interest in underwater image filtering methods--including learning-based approaches used for both restoration and enhancement--and the associated challenges call for a comprehensive review of the state of the art.
2 code implementations • 17 Nov 2020 • Ali Shahin Shamsabadi, Francisco Sepúlveda Teixeira, Alberto Abad, Bhiksha Raj, Andrea Cavallaro, Isabel Trancoso
Speaker identification models are vulnerable to carefully designed adversarial perturbations of their input signals that induce misclassification.
no code implementations • 3 Nov 2020 • Vandana Rajan, Alessio Brutti, Andrea Cavallaro
The proposed multi-modal training framework uses cross-modal translation and correlation-based latent space alignment to improve the representations of the weaker modalities.
no code implementations • 30 Sep 2020 • Ricardo Sanchez-Matilla, Andrea Cavallaro
Out-of-home audience measurement aims to count and characterize the people exposed to advertising content in the physical world.
2 code implementations • 13 Aug 2020 • Ali Shahin Shamsabadi, Changjae Oh, Andrea Cavallaro
The proposed framework combines a structure loss and a semantic adversarial loss in a multi-task objective function to train a fully convolutional neural network.
2 code implementations • 5 Aug 2020 • Mohammad Malekzadeh, Richard G. Clegg, Andrea Cavallaro, Hamed Haddadi
We introduce a dimension-adaptive pooling (DAP) layer that makes DNNs flexible and more robust to changes in sensor availability and in sampling rate.
1 code implementation • 19 Jul 2020 • Ricardo Sanchez-Matilla, Chau Yi Li, Ali Shahin Shamsabadi, Riccardo Mazzon, Andrea Cavallaro
To address these limitations, we present an adversarial attack {that is} specifically designed to protect visual content against { unseen} classifiers and known defenses.
no code implementations • 14 Jul 2020 • Apostolos Modas, Ricardo Sanchez-Matilla, Pascal Frossard, Andrea Cavallaro
Autonomous Vehicles rely on accurate and robust sensor observations for safety critical decision-making in a variety of conditions.
1 code implementation • 6 Jul 2020 • Mohamed Ilyes Lakhal, Davide Boscaini, Fabio Poiesi, Oswald Lanz, Andrea Cavallaro
We first estimate the 3D mesh of the target body and transfer the rough textures from the 2D images to the mesh.
1 code implementation • 12 Apr 2020 • Ali Shahin Shamsabadi, Adria Gascon, Hamed Haddadi, Andrea Cavallaro
To address this problem, we propose PrivEdge, a technique for privacy-preserving MLaaS that safeguards the privacy of users who provide their data for training, as well as users who use the prediction service.
2 code implementations • 12 Apr 2020 • Fan Mo, Ali Shahin Shamsabadi, Kleomenis Katevas, Soteris Demetriou, Ilias Leontiadis, Andrea Cavallaro, Hamed Haddadi
We present DarkneTZ, a framework that uses an edge device's Trusted Execution Environment (TEE) in conjunction with model partitioning to limit the attack surface against Deep Neural Networks (DNNs).
1 code implementation • 27 Nov 2019 • Alessio Xompero, Ricardo Sanchez-Matilla, Apostolos Modas, Pascal Frossard, Andrea Cavallaro
The 3D localisation of an object and the estimation of its properties, such as shape and dimensions, are challenging under varying degrees of transparency and lighting conditions.
2 code implementations • CVPR 2020 • Ali Shahin Shamsabadi, Ricardo Sanchez-Matilla, Andrea Cavallaro
Instead, adversarial attacks that generate unrestricted perturbations are more robust to defenses, are generally more successful in black-box settings and are more transferable to unseen classifiers.
1 code implementation • 14 Nov 2019 • Mohammad Malekzadeh, Richard G. Clegg, Andrea Cavallaro, Hamed Haddadi
Sensitive inferences and user re-identification are major threats to privacy when raw sensor data from wearable or portable devices are shared with cloud-assisted applications.
2 code implementations • 27 Oct 2019 • Ali Shahin Shamsabadi, Changjae Oh, Andrea Cavallaro
This loss function accounts for both image detail enhancement and class misleading objectives.
8 code implementations • 15 Oct 2019 • Kaiyang Zhou, Yongxin Yang, Andrea Cavallaro, Tao Xiang
An effective person re-identification (re-ID) model should learn feature representations that are both discriminative, for distinguishing similar-looking people, and generalisable, for deployment across datasets without any adaptation.
Unsupervised Domain Adaptation Unsupervised Person Re-Identification
1 code implementation • 26 Sep 2019 • Vandana Rajan, Alessio Brutti, Andrea Cavallaro
Computational paralinguistics aims to infer human emotions, personality traits and behavioural patterns from speech signals.
no code implementations • 13 Jul 2019 • Fan Mo, Ali Shahin Shamsabadi, Kleomenis Katevas, Andrea Cavallaro, Hamed Haddadi
Pre-trained Deep Neural Network (DNN) models are increasingly used in smartphones and other user devices to enable prediction services, leading to potential disclosures of (sensitive) information from training data captured inside these models.
16 code implementations • ICCV 2019 • Kaiyang Zhou, Yongxin Yang, Andrea Cavallaro, Tao Xiang
As an instance-level recognition problem, person re-identification (ReID) relies on discriminative features, which not only capture different spatial scales but also encapsulate an arbitrary combination of multiple scales.
Ranked #2 on Person Re-Identification on MSMT17-C
no code implementations • 29 Oct 2018 • Omair Sarwar, Bernhard Rinner, Andrea Cavallaro
To address this issue, we propose to pseudo-randomly modify the appearance of face regions in the images using a privacy filter that prevents a human or a face recogniser from inferring the identities of people.
1 code implementation • 26 Oct 2018 • Mohammad Malekzadeh, Richard G. Clegg, Andrea Cavallaro, Hamed Haddadi
Motion sensors such as accelerometers and gyroscopes measure the instant acceleration and rotation of a device, in three dimensions.
no code implementations • 9 Jul 2018 • Kaiyang Zhou, Tao Xiang, Andrea Cavallaro
Most existing video summarisation methods are based on either supervised or unsupervised learning.
no code implementations • 17 Mar 2018 • Mohamad Baydoun, Mahdyar Ravanbakhsh, Damian Campo, Pablo Marin, David Martin, Lucio Marcenaro, Andrea Cavallaro, Carlo S. Regazzoni
This paper focuses on multi-sensor anomaly detection for moving cognitive agents using both external and private first-person visual observations.
1 code implementation • 21 Feb 2018 • Mohammad Malekzadeh, Richard G. Clegg, Andrea Cavallaro, Hamed Haddadi
Results show that the proposed framework maintains the usefulness of the transformed data for activity recognition, with an average loss of only around three percentage points, while reducing the possibility of gender classification to around 50\%, the target random guess, from more than 90\% when using raw sensor data.
no code implementations • 10 Feb 2018 • Ali Shahin Shamsabadi, Hamed Haddadi, Andrea Cavallaro
A major advantage of the proposed filter over existing distributed learning approaches is that users cannot access, even indirectly, the parameters of other users.