About Me

I am a second year computer science PhD student at Vislang Lab in Rice University, advised by Prof. Vicente Ordonez. Prior to this, I obtained my bachelor’s degree in Industrial Engineering from ESPOL (top 1% of the class), where I worked with Prof. Andres G. Abad on machine learning and computer vision. I also worked as a research assistant at INARI Lab on applications of computer vision to retail. I have also shortly worked as a Computer Vision engineer at adaviv.

I am interested in computer vision, natural language processing, and machine learning. I am particularly interested in self-supervised learning for video data. I am currently working on multimodal learning for to solve vairous vision tasks using language.

As a PhD student, I am always eager to collaborate with other researchers. If you are interested in working with me, feel free to reach out to me via email.

Pre prints

Generative Visual Instruction Tuning. [arxiv]
Jefferson Hernandez, Ruben Villegas and Vicente Ordonez
June 2024

Publications

ViC-MAE: Self-Supervised Representation Learning from Images and Video
with Contrastive Masked Autoencoders. [Paper] [arxiv] [Project Page] [Code]
Jefferson Hernandez, Ruben Villegas and Vicente Ordonez
November 2023, ECCV 2024

Automatic Retail Dataset Creation with Multiple Sources of Information Synchronization. [Paper]
Jefferson Hernandez, Ruben Palacios, Byron Piguave, and Andres Abad
October 2023, IPTA 2023

A View Invariant Human Action Recognition System for Noisy Inputs. [Paper]
Jefferson Hernandez, J.W. Kim, Ruben Cobos, and Andres Abad
May 2022, CRV 2022

Hierarchical Human Action Recognition to Measure the Performance of Manual Labor. [Paper]
Jefferson Hernandez, Gabriela Valarezo, Ruben Cobos, J.W. Kim, and Andres Abad
2021, IEEE Access

Automatic Time and Motion Study Using Deep Learning. [Paper]
Jefferson Hernandez, Sofia Lopez, Gabriela Valarezo, and Andres Abad
2021, CRC Press

A fast multi-object tracking system using an object detector ensemble. [Paper] [arxiv]
Jefferson Hernandez, Ruben Cobos, and Andres Abad
June 2019, ColCACI 2019

Retail Traffic-Flow Analysis Using a Fast Multi-object Detection and Tracking System. [Paper]
Jefferson Hernandez, Ruben Cobos, and Andres Abad
2019, Springer, ColCACI

Learning from multivariate discrete sequential data
using a restricted Boltzmann machine model. [Paper] [arxiv]
Jefferson Hernandez, and Andres Abad
May 2018, ColCACI 2018

Spatial and Temporal Feature Extraction Using a Restricted Boltzmann Machine Model. [Paper]
Jefferson Hernandez, and Andres Abad
May 2018, Springer, ColCACI