Search Results for author: Catarina Barata

Found 6 papers, 4 papers with code

Extending 3D body pose estimation for robotic-assistive therapies of autistic children

no code implementations12 Feb 2024 Laura Santos, Bernardo Carvalho, Catarina Barata, José Santos-Victor

In real-world settings, the proposed model performs similarly to a Kinect depth camera and manages to successfully estimate the 3D body poses in a much higher number of frames.

Pose Estimation

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

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