Search Results for author: Gilberto Ochoa-Ruiz

Found 32 papers, 6 papers with code

FAU-Net: An Attention U-Net Extension with Feature Pyramid Attention for Prostate Cancer Segmentation

no code implementations4 Sep 2023 Pablo Cesar Quihui-Rubio, Daniel Flores-Araiza, Miguel Gonzalez-Mendoza, Christian Mata, Gilberto Ochoa-Ruiz

This contribution presents a deep learning method for the segmentation of prostate zones in MRI images based on U-Net using additive and feature pyramid attention modules, which can improve the workflow of prostate cancer detection and diagnosis.

Segmentation

Assessing the performance of deep learning-based models for prostate cancer segmentation using uncertainty scores

no code implementations9 Aug 2023 Pablo Cesar Quihui-Rubio, Daniel Flores-Araiza, Gilberto Ochoa-Ruiz, Miguel Gonzalez-Mendoza, Christian Mata

This study focuses on comparing deep learning methods for the segmentation and quantification of uncertainty in prostate segmentation from MRI images.

Segmentation

Isolated Sign Language Recognition based on Tree Structure Skeleton Images

1 code implementation10 Apr 2023 David Laines, Gissella Bejarano, Miguel Gonzalez-Mendoza, Gilberto Ochoa-Ruiz

We evaluated the effectiveness of our model on the Ankara University Turkish Sign Language (TSL) dataset, AUTSL, and a Mexican Sign Language (LSM) dataset.

Data Augmentation Pose Estimation +1

Improving automatic endoscopic stone recognition using a multi-view fusion approach enhanced with two-step transfer learning

no code implementations6 Apr 2023 Francisco Lopez-Tiro, Elias Villalvazo-Avila, Juan Pablo Betancur-Rengifo, Ivan Reyes-Amezcua, Jacques Hubert, Gilberto Ochoa-Ruiz, Christian Daul

This contribution presents a deep-learning method for extracting and fusing image information acquired from different viewpoints, with the aim to produce more discriminant object features for the identification of the type of kidney stones seen in endoscopic images.

Transfer Learning

SUPRA: Superpixel Guided Loss for Improved Multi-modal Segmentation in Endoscopy

no code implementations9 Nov 2022 Rafael Martinez-Garcia-Peña, Mansoor Ali Teevno, Gilberto Ochoa-Ruiz, Sharib Ali

In this paper, we explore the domain generalisation technique to enable DL methods to be used in such scenarios.

Improved Kidney Stone Recognition Through Attention and Multi-View Feature Fusion Strategies

no code implementations5 Nov 2022 Elias Villalvazo-Avila, Francisco Lopez-Tiro, Jonathan El-Beze, Jacques Hubert, Miguel Gonzalez-Mendoza, Gilberto Ochoa-Ruiz, Christian Daul

Moreover, in comparison to the state-of-the-art, the fusion of the deep features improved the overall results up to 11% in terms of kidney stone classification accuracy.

Boosting Kidney Stone Identification in Endoscopic Images Using Two-Step Transfer Learning

no code implementations24 Oct 2022 Francisco Lopez-Tiro, Juan Pablo Betancur-Rengifo, Arturo Ruiz-Sanchez, Ivan Reyes-Amezcua, Jonathan El-Beze, Jacques Hubert, Michel Daudon, Gilberto Ochoa-Ruiz, Christian Daul

Finally, in comparison to models that are trained from scratch or by initializing ImageNet weights, the obtained results suggest that the two-step approach extracts features improving the identification of kidney stones in endoscopic images.

Transfer Learning

A semi-supervised Teacher-Student framework for surgical tool detection and localization

1 code implementation21 Aug 2022 Mansoor Ali, Gilberto Ochoa-Ruiz, Sharib Ali

Therefore, in this paper we introduce a semi-supervised learning (SSL) framework in surgical tool detection paradigm which aims to mitigate the scarcity of training data and the data imbalance through a knowledge distillation approach.

Knowledge Distillation Pseudo Label +1

Knowledge distillation with a class-aware loss for endoscopic disease detection

no code implementations19 Jul 2022 Pedro E. Chavarrias-Solanon, Mansoor Ali-Teevno, Gilberto Ochoa-Ruiz, Sharib Ali

In this work, we leverage deep learning to develop a framework to improve the localization of difficult to detect lesions and minimize the missed detection rate.

Knowledge Distillation

Impact of loss function in Deep Learning methods for accurate retinal vessel segmentation

no code implementations1 Jun 2022 Daniela Herrera, Gilberto Ochoa-Ruiz, Miguel Gonzalez-Mendoza, Christian Mata

The best average of Hausdorff distance and mean square error were obtained using the Nested U-Net with the Dice loss function, which had an average of 6. 32 and 0. 0241 respectively.

Retinal Vessel Segmentation

Interpretable Deep Learning Classifier by Detection of Prototypical Parts on Kidney Stones Images

no code implementations1 Jun 2022 Daniel Flores-Araiza, Francisco Lopez-Tiro, Elias Villalvazo-Avila, Jonathan El-Beze, Jacques Hubert, Gilberto Ochoa-Ruiz, Christian Daul

Identifying the type of kidney stones can allow urologists to determine their formation cause, improving the early prescription of appropriate treatments to diminish future relapses.

Comparing feature fusion strategies for Deep Learning-based kidney stone identification

no code implementations31 May 2022 Elias Villalvazo-Avila, Francisco Lopez-Tiro, Daniel Flores-Araiza, Gilberto Ochoa-Ruiz, Jonathan El-Beze, Jacques Hubert, Christian Daul

This contribution presents a deep-learning method for extracting and fusing image information acquired from different viewpoints with the aim to produce more discriminant object features.

On the in vivo recognition of kidney stones using machine learning

no code implementations21 Jan 2022 Francisco Lopez-Tiro, Vincent Estrade, Jacques Hubert, Daniel Flores-Araiza, Miguel Gonzalez-Mendoza, Gilberto Ochoa-Ruiz, Christian Daul

This pilot study compares the kidney stone recognition performances of six shallow machine learning methods and three deep-learning architectures which were tested with in-vivo images of the four most frequent urinary calculi types acquired with an endoscope during standard ureteroscopies.

BIG-bench Machine Learning

Experimental Large-Scale Jet Flames' Geometrical Features Extraction for Risk Management Using Infrared Images and Deep Learning Segmentation Methods

no code implementations20 Jan 2022 Carmina Pérez-Guerrero, Adriana Palacios, Gilberto Ochoa-Ruiz, Christian Mata, Joaquim Casal, Miguel Gonzalez-Mendoza, Luis Eduardo Falcón-Morales

This research work explores the application of deep learning models in an alternative approach that uses the semantic segmentation of jet fires flames to extract main geometrical attributes, relevant for fire risk assessments.

Management Semantic Segmentation

Real-time Instance Segmentation of Surgical Instruments using Attention and Multi-scale Feature Fusion

no code implementations9 Nov 2021 Juan Carlos Angeles-Ceron, Gilberto Ochoa-Ruiz, Leonardo Chang, Sharib Ali

While accurate tracking of surgical instruments in real-time plays a crucial role in minimally invasive computer-assisted surgeries, it is a challenging task to achieve, mainly due to 1) complex surgical environment, and 2) model design with both optimal accuracy and speed.

Data Augmentation Navigate +3

Assessing the Impact of the Loss Function, Architecture and Image Type for Deep Learning-Based Wildfire Segmentation

1 code implementation Applied Sciences 2021 Jorge Francisco Ciprián-Sánchez, Gilberto Ochoa-Ruiz, Lucile Rossi, Frédéric Morandini

However, it is currently unclear whether the architecture of a model, its loss function, or the image type employed (visible, infrared, or fused) has the most impact on the fire segmentation results.

Fire Detection Segmentation

Comparing Machine Learning based Segmentation Models on Jet Fire Radiation Zones

no code implementations7 Jul 2021 Carmina Pérez-Guerrero, Adriana Palacios, Gilberto Ochoa-Ruiz, Christian Mata, Miguel Gonzalez-Mendoza, Luis Eduardo Falcón-Morales

One such characterization would be the segmentation of different radiation zones within the flame, so this paper presents an exploratory research regarding several traditional computer vision and Deep Learning segmentation approaches to solve this specific problem.

BIG-bench Machine Learning Management +1

Finding Significant Features for Few-Shot Learning using Dimensionality Reduction

no code implementations6 Jul 2021 Mauricio Mendez-Ruiz, Ivan Garcia Jorge Gonzalez-Zapata, Gilberto Ochoa-Ruiz, Andres Mendez-Vazquez

This module helps to improve the accuracy performance by allowing the similarity function, given by the metric learning method, to have more discriminative features for the classification.

Dimensionality Reduction Few-Shot Learning +1

A Bop and Beyond: A Second Order Optimizer for Binarized Neural Networks

1 code implementation11 Apr 2021 Cuauhtemoc Daniel Suarez-Ramirez, Miguel Gonzalez-Mendoza, Leonardo Chang-Fernandez, Gilberto Ochoa-Ruiz, Mario Alberto Duran-Vega

Current techniques for weight-updating use the same approaches as traditional Neural Networks (NNs) with the extra requirement of using an approximation to the derivative of the sign function - as it is the Dirac-Delta function - for back-propagation; thus, efforts are focused adapting full-precision techniques to work on BNNs.

Assessing YOLACT++ for real time and robust instance segmentation of medical instruments in endoscopic procedures

no code implementations30 Mar 2021 Juan Carlos Angeles Ceron, Leonardo Chang, Gilberto Ochoa-Ruiz, Sharib Ali

Image-based tracking of laparoscopic instruments plays a fundamental role in computer and robotic-assisted surgeries by aiding surgeons and increasing patient safety.

Real-time Instance Segmentation Segmentation +1

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