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Research

Hand X-ray segmentation pipeline using SAM
Computer Science · Computer Vision and Pattern Recognition · 2026

Decoding the Past: An Uncertainty-Aware Deep Learning Framework for Sex Attribution in Prehistoric Hand StencilsJournal: Journal of Archaeological Science

Karel Becerra · Boris Mederos · Dean Snow · Ramón A. Mollineda

  • Uncertainty-aware computer vision pipeline.
  • Large-scale DNN training + cross-domain inference.
  • Deep ensemble with CNN + Transformer architectures.
  • Ensemble learning explicitly models epistemic uncertainty.
  • Representation learning + UMAP + k-NN provides independent ML validation.
  • Computer vision, uncertainty quantification, deep ensembles, CNN/Transformer architectures, representation learning, manifold learning, non-parametric ML, and XAI

Research

Hand X-ray segmentation pipeline using SAM
Computers in Biology and Medicine · 2025

Sex classification from hand X-ray images in pediatric patients: How zero-shot Segment Anything Model (SAM) can improve medical image analysis

Ramón A. Mollineda · Karel Becerra · Boris Mederos

  • A zero-prompt strategy for hand segmentation in X-ray images based on zero-shot SAM.
  • A thorough sex classification study from original and segmented hand X-ray images.
  • A low-cost deep learning solution for sex classification from hand X-ray images.
  • Visual explanation of model decisions from the aggregation of attention maps.
  • Novel use case in biological anthropology: sex estimation of prehistoric handprints.