Nicolás Ayobi

AI Engineer
Research Assistant in Computer Vision at CinfonIA
M.Sc., B.Sc in Biomedical Engineering

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About Me

I work as a research assistant in computer vision at the CinfonIA research center of the University of los Andes in Bogota, Colombia under professor's Pablo Arbeláez's supervision. I finished my Master's degree in biomedical engineering focused on medical applications of AI in 2024, and I received my Bachelor's degree in biomedical engineering with a double minor in Bioinformatics and Computational Mathematics in 2022. During the last four years, I've worked on several research projects focused on deep learning and computer vision for medical and natural images. My main research interests are image-guided surgical robot intelligence, video analysis, biomedical image processing, image segmentation, and vision & language.


Contact Details

City: Bogotá D.C., Colombia
Zip Code: 110121
E-mail: n.ayobi@uniandes.edu.co

Publications

Find a more detailed report of my publications in my google scholar, my ResearchGate or my ORCID.

MuST: Multi-Scale Transformers for Surgical Phase Recognition.
Alejandra Pérez, Santiago Rodríguez, Nicolás Ayobi, Nicolás Aparicio, Eugénie Dessevres, and Pablo Arbeláez
Poster at the International Conference on Medican Image Computing and Computer Assisted Interventions (MICCAI) 2024.
[PDF] [Code]

Pixel-Wise Recognition for Holistic Surgical Scene Understanding.
Nicolás Ayobi, Santiago Rodríguez, Alejandra Pérez, Isabela Hernández, Nicolás Aparicio, Eugenie Dessevres, Sebastián Peña, Jessica Santander, Juan Ignacio Caicedo, Nicolás Fernández, Pablo Arbeláez
In revision for Medical Image Analysis.
[PDF] [Code] [Data]

STRIDE: Street View-based Environmental Feature Detection and Pedestrian Collision Prediction.
Cristina González*, Nicolás Ayobi*, Felipe Escallón, Laura Baldovino-Chiquillo, Maria Wilches-Mogollón, Donny Pasos, Nicole Ramírez, Jose Pinzón, Olga Sarmiento, D. Alex Quistberg, Pablo Arbeláez.
Oral presentation at the second ROAD++ workshop hosted at the International Conference of Computer Vision (ICCVW) 2023. Awarded Best Student Paper.
[PDF] [Paper] [Code] [Data]

PiGLET: Pixel-level Grounding of Language Expressions with Transformers.
Cristina González, Nicolás Ayobi, Isabela Hernández, Jordi Pont-Tuset, Pablo Arbeláez.
IEEE Transactions on Pattern Analysis and Machine Intelligence (TPAMI) 2023.
[Project Page] [Paper] [Code] [Data]

MATIS: Masked-Attention Transformers for Surgical Instrument Segmentation.
Nicolás Ayobi, Alejandra Pérez-Rondón, Santiago Rodríguez, Pablo Arbeláez.
Oral presentation at the IEEE International Symposium on Biomedical Imaging (ISBI) 2023.
[PDF] [Paper] [Code] [Data]

Towards Holistic Surgical Scene Understanding.
Natalia Valderrama, Paola Ruíz, Isabela Hernández, Nicolás Ayobi, Mathilde Verlyk, Jessica Santander, Juan Caicedo, Nicolás Fernández, Pablo Arbeláez.
Oral Presentation at the International Conference on Medican Image Computing and Computer Assisted Interventions (MICCAI) 2022. Nominated for Best Paper Award.
[Project Page] [PDF] [Paper] [Code] [Data]

Panoptic Narrative Grounding.
Cristina González, Nicolás Ayobi, Isabela Hernández, José Hernández, Jordi Pont-Tuset, Pablo Arbeláez.
Oral presentation at the International Conference of Computer Vision (ICCV) 2021.
[Project Page] [Paper] [PDF] [Code] [Data]

Development of a Movil App for the Preoperative Evaluation of Sinus CT Scan: One Step Towards Artificial Intelligence.
Javier Ospina, Cristhian Forigua, Andrés Hernández, Nicolás Ayobi, Tomás Correa, Augusto Peñaranda, Arif Janjua.
Oral presentation at Acta de Otorrinolaringología y Cirugía de Cabeza y Cuello 2022.
[Paper]

Experience

Industry Experience

Freelance AI Consultant and Developer

Plibotts June 2023 - August 2023

Research Experience

Research Assistant in Computer Vision and AI

CinfonIA Research Center January 2022 - August 2024

Undergraduate Research Assistant

CinfonIA Research Center June 2020 - December 2021

Teaching Experience

Graduate Teaching Assistant in Computer Vision

Universidad de los Andes (Bogotá, Colombia)

June 2023 - August 2023 ~ Research Summer School of Introduction to Deep Learning
August 2022 - December 2022 ~ Advanced Machine Learning
January 2022 - June 2022 ~ Computer Vision
January 2022 - September 2022 ~ Coursera's Master's Degree in AI by Uniandes

Undergraduate Teaching Assistant

Universidad de los Andes (Bogotá, Colombia)

November 2021 - December 2021 ~ Coursera's Master's Degree in AI by Uniandes
August 2021 - December 2021 ~ Introduction to Programming
January 2021 - June 2021 ~ Data Structures and Algorithms
August 2020 - June 2021 ~ Data Structures
August 2020 - December 2020 ~ Image Analysis and Processing
January 2020 - June 2020 ~ Biomedical Engineering Foundations for Neurosurgery


Education

M.Sc. Biomedical Engineering

Universidad de los Andes (Bogotá, Colombia) January 2022 - December 2023

B.Sc. Biomedical Engineering (Cum Laude)

Universidad de los Andes (Bogotá, Colombia) July 2017 - December 2021

Double minor in Computational Mathematics and in Bioinformatics

Undergraduate Exchange Program in Biomedical Engineering

University of New South Wales (Sydney, Australia) August 2019 - December 2019

International Baccalaureate Diploma

Gimnasio Vermont School (Bogotá, Colombia) August 2015 - June 2017