Search Results for author: Diego Valsesia

Found 27 papers, 12 papers with code

Modeling uncertainty for Gaussian Splatting

no code implementations27 Mar 2024 Luca Savant, Diego Valsesia, Enrico Magli

We present Stochastic Gaussian Splatting (SGS): the first framework for uncertainty estimation using Gaussian Splatting (GS).

Decision Making Image Reconstruction +2

Onboard deep lossless and near-lossless predictive coding of hyperspectral images with line-based attention

no code implementations26 Mar 2024 Diego Valsesia, Tiziano Bianchi, Enrico Magli

Deep learning methods have traditionally been difficult to apply to compression of hyperspectral images onboard of spacecrafts, due to the large computational complexity needed to achieve adequate representational power, as well as the lack of suitable datasets for training and testing.

Deep 3D World Models for Multi-Image Super-Resolution Beyond Optical Flow

no code implementations30 Jan 2024 Luca Savant Aira, Diego Valsesia, Andrea Bordone Molini, Giulia Fracastoro, Enrico Magli, Andrea Mirabile

Multi-image super-resolution (MISR) allows to increase the spatial resolution of a low-resolution (LR) acquisition by combining multiple images carrying complementary information in the form of sub-pixel offsets in the scene sampling, and can be significantly more effective than its single-image counterpart.

Image Registration Image Super-Resolution +1

Fast Inference in Denoising Diffusion Models via MMD Finetuning

1 code implementation19 Jan 2023 Emanuele Aiello, Diego Valsesia, Enrico Magli

Our findings show that the proposed method is able to produce high-quality samples in a fraction of the time required by widely-used diffusion models, and outperforms state-of-the-art techniques for accelerated sampling.

Denoising Image Generation +1

Rethinking the compositionality of point clouds through regularization in the hyperbolic space

1 code implementation21 Sep 2022 Antonio Montanaro, Diego Valsesia, Enrico Magli

In this paper, we propose to embed the features of a point cloud classifier into the hyperbolic space and explicitly regularize the space to account for the part-whole hierarchy.

3D Point Cloud Classification Point Cloud Classification

Exploring the solution space of linear inverse problems with GAN latent geometry

no code implementations1 Jul 2022 Antonio Montanaro, Diego Valsesia, Enrico Magli

Inverse problems consist in reconstructing signals from incomplete sets of measurements and their performance is highly dependent on the quality of the prior knowledge encoded via regularization.

Generative Adversarial Network Image Super-Resolution

Super-resolved multi-temporal segmentation with deep permutation-invariant networks

no code implementations6 Apr 2022 Diego Valsesia, Enrico Magli

Multi-image super-resolution from multi-temporal satellite acquisitions of a scene has recently enjoyed great success thanks to new deep learning models.

Image Reconstruction Image Super-Resolution +2

Semi-supervised learning for joint SAR and multispectral land cover classification

no code implementations20 Aug 2021 Antonio Montanaro, Diego Valsesia, Giulia Fracastoro, Enrico Magli

Semi-supervised learning techniques are gaining popularity due to their capability of building models that are effective, even when scarce amounts of labeled data are available.

Land Cover Classification Self-Supervised Learning

Permutation invariance and uncertainty in multitemporal image super-resolution

1 code implementation26 May 2021 Diego Valsesia, Enrico Magli

However, existing models have neglected the issue of temporal permutation, whereby the temporal ordering of the input images does not carry any relevant information for the super-resolution task and causes such models to be inefficient with the, often scarce, ground truth data that available for training.

Multi-Frame Super-Resolution

RAN-GNNs: breaking the capacity limits of graph neural networks

no code implementations29 Mar 2021 Diego Valsesia, Giulia Fracastoro, Enrico Magli

In this paper, we investigate the recently proposed randomly wired architectures in the context of graph neural networks.

Attribute Benchmarking

Don't stack layers in graph neural networks, wire them randomly

no code implementations ICLR Workshop GTRL 2021 Diego Valsesia, Giulia Fracastoro, Enrico Magli

In this paper, we investigate the recently proposed randomly wired architectures in the context of graph neural networks.

Attribute Benchmarking

Deep Learning Methods For Synthetic Aperture Radar Image Despeckling: An Overview Of Trends And Perspectives

no code implementations10 Dec 2020 Giulia Fracastoro, Enrico Magli, Giovanni Poggi, Giuseppe Scarpa, Diego Valsesia, Luisa Verdoliva

Synthetic aperture radar (SAR) images are affected by a spatially-correlated and signal-dependent noise called speckle, which is very severe and may hinder image exploitation.

Sar Image Despeckling

Speckle2Void: Deep Self-Supervised SAR Despeckling with Blind-Spot Convolutional Neural Networks

1 code implementation4 Jul 2020 Andrea Bordone Molini, Diego Valsesia, Giulia Fracastoro, Enrico Magli

Information extraction from synthetic aperture radar (SAR) images is heavily impaired by speckle noise, hence despeckling is a crucial preliminary step in scene analysis algorithms.

Sar Image Despeckling

DeepSUM++: Non-local Deep Neural Network for Super-Resolution of Unregistered Multitemporal Images

no code implementations15 Jan 2020 Andrea Bordone Molini, Diego Valsesia, Giulia Fracastoro, Enrico Magli

Deep learning methods for super-resolution of a remote sensing scene from multiple unregistered low-resolution images have recently gained attention thanks to a challenge proposed by the European Space Agency.

Super-Resolution

Towards Deep Unsupervised SAR Despeckling with Blind-Spot Convolutional Neural Networks

no code implementations15 Jan 2020 Andrea Bordone Molini, Diego Valsesia, Giulia Fracastoro, Enrico Magli

The proposed method is trained employing only noisy images and can therefore learn features of real SAR images rather than synthetic data.

Denoising

Analysis of SparseHash: an efficient embedding of set-similarity via sparse projections

no code implementations2 Sep 2019 Diego Valsesia, Sophie Marie Fosson, Chiara Ravazzi, Tiziano Bianchi, Enrico Magli

Embeddings provide compact representations of signals in order to perform efficient inference in a wide variety of tasks.

DeepSUM: Deep neural network for Super-resolution of Unregistered Multitemporal images

1 code implementation15 Jul 2019 Andrea Bordone Molini, Diego Valsesia, Giulia Fracastoro, Enrico Magli

This novel framework integrates the spatial registration task directly inside the CNN, and allows to exploit the representation learning capabilities of the network to enhance registration accuracy.

Multi-Frame Super-Resolution Representation Learning

High-throughput Onboard Hyperspectral Image Compression with Ground-based CNN Reconstruction

1 code implementation5 Jul 2019 Diego Valsesia, Enrico Magli

Compression of hyperspectral images onboard of spacecrafts is a tradeoff between the limited computational resources and the ever-growing spatial and spectral resolution of the optical instruments.

Image Compression Vocal Bursts Intensity Prediction

Image Denoising with Graph-Convolutional Neural Networks

1 code implementation29 May 2019 Diego Valsesia, Giulia Fracastoro, Enrico Magli

The graph-convolutional layers dynamically construct neighborhoods in the feature space to detect latent correlations in the feature maps produced by the hidden layers.

Image Denoising

Learning Localized Generative Models for 3D Point Clouds via Graph Convolution

1 code implementation ICLR 2019 Diego Valsesia, Giulia Fracastoro, Enrico Magli

We also study the problem of defining an upsampling layer in the graph-convolutional generator, such that it learns to exploit a self-similarity prior on the data distribution to sample more effectively.

Point Cloud Generation

Binary adaptive embeddings from order statistics of random projections

no code implementations30 Jan 2017 Diego Valsesia, Enrico Magli

We use some of the largest order statistics of the random projections of a reference signal to construct a binary embedding that is adapted to signals correlated with such signal.

General Classification

Smoothness-Constrained Image Recovery from Block-Based Random Projections

no code implementations8 Oct 2013 Giulio Coluccia, Diego Valsesia, Enrico Magli

On one hand, it allows to enforce a set of constraints to drive the reconstruction algorithm towards a smooth solution, imposing the similarity of block borders.

SSIM

Spatially Scalable Compressed Image Sensing with Hybrid Transform and Inter-layer Prediction Model

no code implementations4 Oct 2013 Diego Valsesia, Enrico Magli

The proposed method successfully provides resolution and quality scalability with modest complexity and it provides gains in the quality of the reconstructed images with respect to separate encoding of the quality layers.

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