Search Results for author: Alceu Bissoto

Found 13 papers, 10 papers with code

The Performance of Transferability Metrics does not Translate to Medical Tasks

1 code implementation14 Aug 2023 Levy Chaves, Alceu Bissoto, Eduardo Valle, Sandra Avila

Transfer learning boosts the performance of medical image analysis by enabling deep learning (DL) on small datasets through the knowledge acquired from large ones.

Transfer Learning

Test-Time Selection for Robust Skin Lesion Analysis

1 code implementation10 Aug 2023 Alceu Bissoto, Catarina Barata, Eduardo Valle, Sandra Avila

Skin lesion analysis models are biased by artifacts placed during image acquisition, which influence model predictions despite carrying no clinical information.

Even Small Correlation and Diversity Shifts Pose Dataset-Bias Issues

no code implementations9 May 2023 Alceu Bissoto, Catarina Barata, Eduardo Valle, Sandra Avila

Our protocol reveals three findings: 1) Models learn and propagate correlation shifts even with low-bias training; this poses a risk of accumulating and combining unaccountable weak biases; 2) Models learn robust features in high- and low-bias scenarios but use spurious ones if test samples have them; this suggests that spurious correlations do not impair the learning of robust features; 3) Diversity shift can reduce the reliance on spurious correlations; this is counter intuitive since we expect biased models to depend more on biases when invariant features are missing.

Artifact-Based Domain Generalization of Skin Lesion Models

1 code implementation20 Aug 2022 Alceu Bissoto, Catarina Barata, Eduardo Valle, Sandra Avila

We propose a pipeline that relies on artifacts annotation to enable generalization evaluation and debiasing for the challenging skin lesion analysis context.

Domain Generalization Out-of-Distribution Generalization

A Survey on Deep Learning for Skin Lesion Segmentation

1 code implementation1 Jun 2022 Zahra Mirikharaji, Kumar Abhishek, Alceu Bissoto, Catarina Barata, Sandra Avila, Eduardo Valle, M. Emre Celebi, Ghassan Hamarneh

We analyze these works along several dimensions, including input data (datasets, preprocessing, and synthetic data generation), model design (architecture, modules, and losses), and evaluation aspects (data annotation requirements and segmentation performance).

Lesion Segmentation Segmentation +2

An Evaluation of Self-Supervised Pre-Training for Skin-Lesion Analysis

1 code implementation17 Jun 2021 Levy Chaves, Alceu Bissoto, Eduardo Valle, Sandra Avila

Self-supervised pre-training appears as an advantageous alternative to supervised pre-trained for transfer learning.

Transfer Learning

GAN-Based Data Augmentation and Anonymization for Skin-Lesion Analysis: A Critical Review

1 code implementation20 Apr 2021 Alceu Bissoto, Eduardo Valle, Sandra Avila

Despite the growing availability of high-quality public datasets, the lack of training samples is still one of the main challenges of deep-learning for skin lesion analysis.

Data Augmentation

Debiasing Skin Lesion Datasets and Models? Not So Fast

1 code implementation23 Apr 2020 Alceu Bissoto, Eduardo Valle, Sandra Avila

Data-driven models are now deployed in a plethora of real-world applications - including automated diagnosis - but models learned from data risk learning biases from that same data.

Lesion Classification Skin Lesion Classification

The Six Fronts of the Generative Adversarial Networks

no code implementations29 Oct 2019 Alceu Bissoto, Eduardo Valle, Sandra Avila

Generative Adversarial Networks fostered a newfound interest in generative models, resulting in a swelling wave of new works that new-coming researchers may find formidable to surf.

(De)Constructing Bias on Skin Lesion Datasets

1 code implementation18 Apr 2019 Alceu Bissoto, Michel Fornaciali, Eduardo Valle, Sandra Avila

We fed models with additional clinically meaningful information, which failed to improve the results even slightly, suggesting the destruction of cogent correlations.

BIG-bench Machine Learning

Deep-Learning Ensembles for Skin-Lesion Segmentation, Analysis, Classification: RECOD Titans at ISIC Challenge 2018

no code implementations25 Aug 2018 Alceu Bissoto, Fábio Perez, Vinícius Ribeiro, Michel Fornaciali, Sandra Avila, Eduardo Valle

This extended abstract describes the participation of RECOD Titans in parts 1 to 3 of the ISIC Challenge 2018 "Skin Lesion Analysis Towards Melanoma Detection" (MICCAI 2018).

Attribute Classification +4

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