Technical Sessions

SANA‑I2I: A Text‑Free Flow‑Matching Framework for Paired Image‑to‑Image Translation with a Case Study in Fetal MRI Artifact Reduction
Ítalo Santos (National Laboratory for Scientific Computing)*; Gilson Giraldi (National Laboratory for Scientific Computing); Heron Werner (Biodesign Laboratory Dasa)

Does the Learned-Feature Advantage over Classical Texture Descriptors Survive Controls for Invariance, Dimensionality and Label Regime? A Controlled Study on Colorectal Histopathology
Matheus Silveira (Ilum)*

Automatic Sleep Stage Classification: Evaluation of Gini Importance and Random Search with Random Forest and Single-Channel EEG
Francisco Hugo Vale (UFG)*; Ronaldo da Costa (UFG)

From Simulated Clinical Noise to Experimental Laboratory CT: Cross-Domain Generalization and Fine-Tuning of CoreDiff
Paulo Mausbach (Unicamp)*; Hélio Pedrini (Unicamp); Zanoni Dias (Unicamp)

Zero-Shot Benchmarking of Segment Anything Models for Multi-Structure Segmentation in Chest Radiographs
Wagner de Oliveira (IFES)*; Francisco Boldt (IFES)

Beyond Classifier Accuracy: A Four-Axis Validation Protocol for a Small, Session-Structured Lemna minor Copper-Stress Image Dataset
João Cardoso Amancio de Sá (Universidade de São Paulo)*; Thiago Bandeira (Universidade de São Paulo)

Federated Deepfake Detection under Manipulation-Defined Non-IID Data
Stefanne Pereira Dias (Federal University of Viçosa); Anne Teixeira Silva (Federal University of Viçosa); Rodrigo Moreira (Federal University of Viçosa); Larissa Rodrigues Moreira (Federal University of Viçosa)*

Selective Heterogeneous Ensemble for Imbalanced Agricultural Pest Classification
Otavio Silva Pierin (Federal University of Viçosa); Leandro Furtado P. Silva (Federal University of Viçosa); João Fernando Mari ( Federal University of Viçosa); Larissa Rodrigues Moreira (Federal University of Viçosa)*

Ground-Truth Augmentation for Camera-Radar BEV Fusion in 3D Object Detection
Pedro Salzani (Instituto de pesquisas Eldorado)*

Data Augmentation for Long-Tail Traffic Sign Detection: How Strategy and Detector Capacity Trade Off Value and Cost
Daniel Roncaglio (UNIVERSIDADE TECNOLOGICA FEDERAL DO PARANÁ)*; Rafael Staiger Bressan (UNIVERSIDADE FEDERAL DO PARANÁ); Teruo M. Maruyama (UNIVERSIDADE TECNOLOGICA FEDERAL DO PARANÁ); Danilo Sipoli Sanche (UNIVERSIDADE TECNOLOGICA FEDERAL DO PARANÁ); Alessandro Botelho Bovo (UNIVERSIDADE TECNOLOGICA FEDERAL DO PARANÁ); Andre Roberto OrtoncellI (UNIVERSIDADE TECNOLOGICA FEDERAL DO PARANÁ)

Compression Breaks the Detector, Not the Signal: Degradation Robustness of AI-Generated Image Detection
Lucas Queiroz (Universidade Federal de Viçosa)*; Pedro Melo (Universidade Federal de Viçosa)

Maritime Search and Rescue: An Evaluation of Small-Object Detection in UAV Imagery
Ighor Ribeiro (Marinha do Brasil)*; Rigel Fernandes (Marinha do Brasil)

Sign Language Recognition with Video Foundation Models: V-JEPA Transfer and Adaptation
Giovanne Mariano (Universidade Estadual de Campinas)*; Hélio Pedrini (Universidade Estadual de Campinas)

Wireless Signal Direction Analysis from Real-World Roadside Images
Luís Fernando Almeida (Universidade Federal de Viçosa)*; Rodrigo Moreira (Universidade Federal de Viçosa); Larissa Ferreira Rodrigues Moreira (Universidade Federal de Viçosa)

Spatio-temporal information in 3D neural networks for the recognition of dynamic signs in Brazilian Sign Language
Yann Eduardo de Souza Silva (Universidade Federal de Ouro Preto); Guillermo Cámara (Universidade Federal de Ouro Preto)*

Person Re-Identification in Intelligent Spaces Using Neural Networks and Computer Vision.pdf
Mateus Menines (Universidade Federal do Espírito Santo)*; Luiz Filho (Universidade Federal do Espírito Santo); Raquel Vassallo (Universidade Federal do Espírito Santo)

End-to-End Benchmarking of a Real-Time Multi-Stage Face Recognition Pipeline across Edge Computing Platforms
Marcelo Alves (UFG)*; Gabrielle Siqueira Moreira Leão (UFG); Gustavo Viana Lima (Universidade Federal de Goiás); Hugo Guilherme de Assis Paula (UFG); Danilo Lourenço Macedo Dias (UFG); Ricardo Franco (UFG)

Efficient Temporal Modeling with ConvNeXt for Human Action Recognition: From Lightweight Aggregation to Simplified Self-Attention
Vinícius Silva (Universidade de Brasília)*; Daniel Silva (Universidade de Brasília)

Do Vision-Language Models Understand Visual Tasks Equally Across Languages? A Task-Level Analysis in English and Brazilian Portuguese
Giovanni Carbinatti (Eldorado Research Institute)*; Pedro Luiz (Eldorado Research Institute); Lucas Lanaro (Eldorado Research Institute); Gabriel Moraes (Eldorado Research Institute); Wandemberg Gibaut (Eldorado Research Institute)

Integrating Satellite Embeddings and Environmental Variables for Species Distribution Modeling
Igor Dantas (UFRN); Joris Guerin (Institut de Recherche pour le Développement (França)); Jessyca Saraiva-Maia (UFPB); Pedro Estrela (UFPB); Luiz Goncalves (UFRN)*

Training-Free Cosegmentation via Frozen Foundation Models and Spectral Cosaliency
Lucas Lattari (Instituto Federal de Educação, Ciência e Tecnologia do Sudeste de Minas Gerais - Campus Rio Pomba)*; Anselmo Montenegro (Universidade Federal Fluminense)

Grey Is Enough: Representation and RGB Encoding for Frozen-Backbone Spectrogram Recognition
Thaynara Mábille Marques (Universidade Federal de Goiás (UFG)); Lucas Rodrigues (Universidade Federal de Goiás (UFG))*; Iwens Gervásio Sene Junior (Universidade Federal de Goiás (UFG)); Ronaldo Martins da Costa (Universidade Federal de Goiás (UFG))

Maritime Object Screening in Satellite Imagery by Means of Image Tile Classification
Arthur Sampaio (Universidade Federal do Espírito Santo)*; Patrick Ciarelli (Universidade Federal do Espírito Santo); Klaus Côco (Universidade Federal do Espírito Santo)

Black-Box Attack of Vision-Language Evaluators via Reinforcement Learned Global Perturbations
Louis Bohm (None)*

Detection of Synthetic Audio Using Mel Spectrograms and Convolutional Neural Networks
Gustavo Rabelo (Universidade de Brasília)*; Flavio Vidal (Universidade de Brasília)

Comparing Visual Feature Representations for Acute Lymphoblastic Leukemia Cell Classification
Leonardo Rodrigues (UFU); Leandro Couto (UFU); André Backes (Universidade Federal de São Carlos)*

MarIA: Automated Underwater Sun Coral Assessment Using Object Detection
Mateus Antonio Chinelatto (Instituto de Pesquisas Eldorado)*; Guilherme Megeto (Instituto de Pesquisas Eldorado); João Ferreira (Instituto de Pesquisas Eldorado); Augusto Valente (Instituto de Pesquisas Eldorado); Felipe Pamboukian (Instituto de Pesquisas Eldorado); Caique Santos (Instituto de Pesquisas Eldorado); Wewerthon Cardoso (Instituto de Pesquisas Eldorado); Juliana Araújo (Instituto de Pesquisas Eldorado); Guilherme Ramirez (Instituto de Pesquisas Eldorado); Cézanne Alves (Instituto de Pesquisas Eldorado); Ana Paula Brandão (Equinor); Bruno Honório (Equinor)

Comparing Class Balancing in Vision Transformers and Convolutional Neural Networks for Breast Cancer Thermography Classification
Gustavo Resende (Federal University of Uberlândia); Henrique Fernandes (Federal University of Uberlandia); André Backes (Universidade Federal de São Carlos)*

Wood Veneer Quality Classification: Deep Learning vs. Classical Methods
Cristian Gotardo (UTFPR); Khauan Gonçalves Barbosa (IFPR); Andreia Marini (IFPR); André Ortoncelli (UTFPR)*

Architecture-Dependent Effects of Max-Tree Filtering on Renal CT Slice Classification
Vinícius Meireles Pereira Santos (Universidade de São Paulo)*; Pedro Sousa (Universidade Federal de Viçosa); Ronaldo Fumio Hashimoto (Universidade de São Paulo)

Vegetation Encroachment Screening} in Transmission-Line Rights-of-Way from Satellite Imagery
Daniel Braga (CEFET/RJ); Jonathan Gois (CEFET/RJ); Wesley Passos (CEFET/RJ); Amaro Lima (CEFET/RJ)*; Gabriel Araujo (CEFET/RJ)

Two Evaluation Pitfalls in Landmark- and Pixel-Based Hand Configuration Recognition for Brazilian Sign Language
Leonardo Miguel (CEFET/RJ); Jonathan Gois (CEFET/RJ); Wesley Passos (CEFET/RJ); Alessandro Zachi (CEFET/RJ); Luciana Almeida (CEFET/RJ); Amaro Lima (CEFET/RJ)*; Gabriel Araujo (CEFET/RJ)

YOLO-Based Defect Segmentation Surface Pinus Veneers Surface
Cristian Gotardo (UTFPR); Andreia Marini (IFPR); André Ortoncelli (UTFPR)*

Semantic Segmentation of Coffee Plantations in High-Resolution Satellite Imagery: A Comparative Study of CNNs and Transformers
João Ribeiro (IFSULDEMINAS); André Backes (Universidade Federal de São Carlos)*

On-Device Recognition of Brazilian Mercosur License Plates: ML Kit versus Tesseract
Michel Lutegar (Ibmec University Center); Marina Severiano (IBMR University Center); Rigel Fernandes (Ibmec University Center)*; Thiago Souza (Ibmec University Center); Clayton Silva (Ibmec University Center)

Weight Rescaling in Weighted Cross-Entropy: Balancing Discrimination and Calibration in Long-Tailed Chest Radiographs
Gustavo de Freitas (Universidade Federal de Uberlândia)*; Henrique Fernandes (Universidade Federal de Uberlândia); Marcelo Nascimento (Universidade Federal de Uberlândia)

YOLO26-seg for Skin Lesion Segmentation: Resolving the Precision-Efficiency Trade-off
Antônio Vinicius Rodrigues (University of Brasilia)*; Roberta Oliveira (University of Brasilia); Flavio Vidal (University of Brasilia)

Evaluating the Energy Cost of Final Performance Gains in Coffee Leaf Classification
Pedro Ribeiro (Universidade Federal De Viçosa - Campus Rio Paranaíba)*; Rodrigo Moreira (Universidade Federal De Viçosa - Campus Rio Paranaíba); Larissa Moreira (Universidade Federal De Viçosa - Campus Rio Paranaíba); Tereza Carvalho (Universidade de São Paulo); Flávio Silva (Universidade do Minho)

A Comparative Study of Deep Learning Architectures for Brazilian Sign Language Recognition
Jhonatas Oliveira (Universidade Federal do Amazonas)*; Wheidima Melo (Universidade do Estado do Amazonas); Waldir Jr. (Universidade Federal do Amazonas); Manuel Cardoso (MCTECH Consultoria)

Comparing Feature, Clustering, and Sampling Strategies for Round-0 Initialization in Active Learning for Traffic-Sign Detection
Rafael Pegoretti (Universidade Tecnológica Federal do Paraná)*; Rafael Bressan (Universidade Federal do Paraná); André Ortoncelli (Universidade Tecnológica Federal do Paraná); Teruo Maruyama (Universidade Tecnológica Federal do Paraná); Priscila Saito (Universidade Federal de São Carlos); Danilo Sanches (Universidade Tecnológica Federal do Paraná)

Weed Segmentation with RGB and Multispectral Data: A Comparative Study of Architectures and Encoders
Ana Moreira (Federal University of Viçosa); João Mari (Federal University of Viçosa); Leandro Silva (Federal University of Viçosa)*

Test-Time Augmentation and CNN Ensembles for Oral Lesion Classification
Gustavo Miranda (UFU); Vitória Silva (UFU); Daniel Gonçalves (UFU); Adriano Silva (UFU)*; Domingos de Oliveira (UFU); Alessandro Martins (IFTM); Leandro Neves (UNESP); Marcelo do Nascimento (UFU)

Evaluating Deep Semantic Segmentation Models for Road Extraction from Satellite Images
Lucas Carmo (Federal University of Viçosa); Leandro Silva (Federal University of Viçosa); João Mari (Federal University of Viçosa)*

Beyond Aggregate J&F: Exploring what summary metrics conceal in video foreground segmentation
Júlio César Martins dos Anjos Silva (Google)*; Hélio Pedrini (Unicamp)

Real-Time Action Recognition for Intelligent Spaces with Sliding Windows
Antônio de Oliveira (Federal University of Espírito Santo)*; Luiz Cosmi Filho (Federal University of Espírito Santo); Raquel Vassallo (Federal University of Espírito Santo)

Automated Pain Detection in Rodents via Facial Analysis Using Cascade YOLO Architecture Under Hardware Constraints
Deivid do Vale Nascimento (Universidade Federal de Uberlândia)*; Maurício Cunha Escarpinati (Universidade Federal de Uberlândia); Thiago Ribeiro (Universidade Federal de Uberlândia); Marcio Salmazo Ramos (Universidade Federal de Uberlândia); Murilo Vieira da Silva (Universidade Federal de Uberlândia); Daniel Duarte Abdala (Universidade Federal de Uberlândia)

Automated Pap Smear Classification: Clinical Generalization through Federated Learning
Franciele Barbosa (Universidade Federal de Minas Gerais)*; Mayara Kalita Moura Gomides (Universidade Federal de Minas Gerais); Lucas Monteiro Henrique ( Universidade Federal de Minas Gerais); Bruna Luiza Martins Santos (Universidade Federal de Minas Gerais); Mateus Amaral da Silva (Universidade Federal de Minas Gerais); Pedro Henrique Gonçalves Pires (Universidade Federal de Minas Gerais); Cauan Carvalho Marotta (Universidade Federal de Minas Gerais); Leonardo Augusto Ferreira (Universidade Federal de Minas Gerais); Marcelo Antonio Pascoal-Xavier (Universidade Federal de Minas Gerais); Walmir Matos Caminhas (Universidade Federal de Minas Gerais); Andrea G. Campos (Universidade Federal de Ouro Preto); Frederico Gadelha Guimaraes (Universidade Federal de Minas Gerais)

Interpretability of 3D Convolutional Neural Networks for Schizophrenia Classification: A Grad-CAM and Region-of-Interest Analysis
Ester Flores Lino da Silva (Universidade de Brasília)*; Fabiano Araujo Soares (Universidade de Brasília)

A Quantitative Pipeline for Soccer Player Pose Estimation in Broadcast Video
Wagner Victor Alves de Menezes (Universidade Federal de Goiás)*; Ricardo Franco (Universidade Federal de Goiás); Raphael Soares ( Universidade Federal de Goiás); Victor Ribeiro (Universidade Federal de Goiás); André Carmo (Universidade Federal de Goiás)

From 2D Boundaries to 3D Manifolds: Dynamic Complex Networks for Object Recognition
Daniel Valete (IFSC (USP))*; Victor Richard Cardoso (IFSC (USP)); João Vitor Bevilacqua de Souza Merenda (IFSC (USP)); Odemir Martinez Bruno (IFSC (USP)); Gonzalo Travieso (IFSC (USP))

A Spectral and Statistical Comparison of Image Inpainting Paradigms
Elioenai Diniz (USP)*; Odemir M. Bruno (USP)

Combining a Randomized Texture Signature with a Pretrained Convolutional Embedding for Image Retrieval
Elioenai Diniz (USP)*; Odemir M. Bruno (USP)

Rear Region Detection in Guzerá Cows from Upper-View Images using Deep Learning
Enzo Moreira (Universidade Federal de Juiz de Fora); Lukas Sá (Universidade Federal de Juiz de Fora); Frank Bruneli (Embrapa Gado de Leite); Maria Gabriela Peixoto (Embrapa Agricultura Digital); Cleuza Souza (Pontifícia Universidade Católica de Minas Gerais); Michele Machado (Universidade Federal de Minas Gerais); Luiz Maciel (Universidade Federal de Juiz de Fora)*