Search Results for author: Jonathan de Matos

Found 8 papers, 0 papers with code

Multiscale Analysis for Improving Texture Classification

no code implementations21 Apr 2022 Steve T. M. Ataky, Diego Saqui, Jonathan de Matos, Alceu S. Britto Jr., Alessandro L. Koerich

Image pyramid multiresolution representations are a useful data structure for image analysis and manipulation over a spectrum of spatial scales.

Classification Texture Classification

Data Augmentation for Histopathological Images Based on Gaussian-Laplacian Pyramid Blending

no code implementations31 Jan 2020 Steve Tsham Mpinda Ataky, Jonathan de Matos, Alceu de S. Britto Jr., Luiz E. S. Oliveira, Alessandro L. Koerich

Such a problem is troublesome because most of the ML algorithms attempt to optimize a loss function that does not take into account the data imbalance.

Data Augmentation

A Novel Orthogonal Direction Mesh Adaptive Direct Search Approach for SVM Hyperparameter Tuning

no code implementations26 Apr 2019 Alexandre Reeberg Mello, Jonathan de Matos, Marcelo R. Stemmer, Alceu de Souza Britto Jr., Alessandro Lameiras Koerich

In this paper, we propose the use of a black-box optimization method called deterministic Mesh Adaptive Direct Search (MADS) algorithm with orthogonal directions (Ortho-MADS) for the selection of hyperparameters of Support Vector Machines with a Gaussian kernel.

Double Transfer Learning for Breast Cancer Histopathologic Image Classification

no code implementations16 Apr 2019 Jonathan de Matos, Alceu de S. Britto Jr., Luiz E. S. Oliveira, Alessandro L. Koerich

This work proposes a classification approach for breast cancer histopathologic images (HI) that uses transfer learning to extract features from HI using an Inception-v3 CNN pre-trained with ImageNet dataset.

Classification General Classification +2

Histopathologic Image Processing: A Review

no code implementations16 Apr 2019 Jonathan de Matos, Alceu de Souza Britto Jr., Luiz E. S. Oliveira, Alessandro L. Koerich

In this work we present a literature review about the computing techniques to process HI, including shallow and deep methods.

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