Search Results for author: Alessandra Lumini

Found 13 papers, 1 papers with code

Feature transforms for image data augmentation

1 code implementation24 Jan 2022 Loris Nanni, Michelangelo Paci, Sheryl Brahnam, Alessandra Lumini

These novel methods are based on the Fourier Transform (FT), the Radon Transform (RT) and the Discrete Cosine Transform (DCT).

Data Augmentation Image Classification +1

Deep ensembles in bioimage segmentation

no code implementations24 Dec 2021 Loris Nanni, Daniela Cuza, Alessandra Lumini, Andrea Loreggia, Sheryl Brahnam

Semantic segmentation consists in classifying each pixel of an image by assigning it to a specific label chosen from a set of all the available ones.

Segmentation Semantic Segmentation

High performing ensemble of convolutional neural networks for insect pest image detection

no code implementations28 Aug 2021 Loris Nanni, Alessandro Manfe, Gianluca Maguolo, Alessandra Lumini, Sheryl Brahnam

The best performing ensemble, which combined the CNNs using the different augmentation methods and the two new Adam variants proposed here, achieved state of the art on both insect data sets: 95. 52% on Deng and 73. 46% on IP102, a score on Deng that competed with human expert classifications.

Data Augmentation

Deep ensembles based on Stochastic Activation Selection for Polyp Segmentation

no code implementations2 Apr 2021 Alessandra Lumini, Loris Nanni, Gianluca Maguolo

The basic architecture in image segmentation consists of an encoder and a decoder: the first uses convolutional filters to extract features from the image, the second is responsible for generating the final output.

Autonomous Driving Image Segmentation +4

Exploiting Adam-like Optimization Algorithms to Improve the Performance of Convolutional Neural Networks

no code implementations26 Mar 2021 Loris Nanni, Gianluca Maguolo, Alessandra Lumini

In this work, we compare Adam based variants based on the difference between the present and the past gradients, the step size is adjusted for each parameter.

Benchmarking

Neural networks for Anatomical Therapeutic Chemical (ATC) classification

no code implementations22 Jan 2021 Loris Nanni, Alessandra Lumini, Sheryl Brahnam

Motivation: Automatic Anatomical Therapeutic Chemical (ATC) classification is a critical and highly competitive area of research in bioinformatics because of its potential for expediting drug develop-ment and research.

Classification

Deep learning for Plankton and Coral Classification

no code implementations15 Aug 2019 Alessandra Lumini, Loris Nanni, Gianluca Maguolo

We study how to create an ensemble based of different CNN models, fine tuned on several datasets with the aim of exploiting their diversity.

Classification General Classification

Learning morphological operators for skin detection

no code implementations9 Aug 2019 Alessandra Lumini, Loris Nanni, Alice Codogno, Filippo Berno

In this work we propose a novel post processing approach for skin detectors based on trained morphological operators.

Segmentation

Ensemble of Deep Learned Features for Melanoma Classification

no code implementations20 Jul 2018 Loris Nanni, Alessandra Lumini, Stefano Ghidoni

The aim of this work is to propose an ensemble of descriptors for Melanoma Classification, whose performance has been evaluated on validation and test datasets of the melanoma challenge 2018.

Classification General Classification

Fair comparison of skin detection approaches on publicly available datasets

no code implementations7 Feb 2018 Alessandra Lumini, Loris Nanni

Skin detection is the process of discriminating skin and non-skin regions in a digital image and it is widely used in several applications ranging from hand gesture analysis to track body parts and face detection.

Face Detection

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