Search Results for author: Fillia Makedon

Found 11 papers, 0 papers with code

Enhancing Robustness of Indoor Robotic Navigation with Free-Space Segmentation Models Against Adversarial Attacks

no code implementations13 Feb 2024 Qiyuan An, Christos Sevastopoulos, Fillia Makedon

Endeavors in indoor robotic navigation rely on the accuracy of segmentation models to identify free space in RGB images.

Depth-guided Free-space Segmentation for a Mobile Robot

no code implementations3 Nov 2023 Christos Sevastopoulos, Joey Hussain, Stasinos Konstantopoulos, Vangelis Karkaletsis, Fillia Makedon

Accurate indoor free-space segmentation is a challenging task due to the complexity and the dynamic nature that indoor environments exhibit.

Segmentation Superpixels

Understanding Cognitive Fatigue from fMRI Scans with Self-supervised Learning

no code implementations28 Jun 2021 Ashish Jaiswal, Ashwin Ramesh Babu, Mohammad Zaki Zadeh, Fillia Makedon, Glenn Wylie

Functional magnetic resonance imaging (fMRI) is a neuroimaging technique that records neural activations in the brain by capturing the blood oxygen level in different regions based on the task performed by a subject.

Multi-class Classification Self-Supervised Learning

Sequential Late Fusion Technique for Multi-modal Sentiment Analysis

no code implementations22 Jun 2021 Debapriya Banerjee, Fotios Lygerakis, Fillia Makedon

Multi-modal sentiment analysis plays an important role for providing better interactive experiences to users.

Sentiment Analysis

Towards a Multi-purpose Robotic Nursing Assistant

no code implementations7 Jun 2021 Krishna Chaitanya Kodur, Kaustubh Rajpathak, Akilesh Rajavenkatanarayanan, Maria Kyrarini, Fillia Makedon

There is a need for a unified system that not only performs tasks that would assist nurses and reduce their burden but also perform tasks that help a patient.

Automated system to measure Tandem Gait to assess executive functions in children

no code implementations15 Dec 2020 Mohammad Zaki Zadeh, Ashwin Ramesh Babu, Ashish Jaiswal, Maria Kyrarini, Morris Bell, Fillia Makedon

Furthermore in order to improve the accuracy of the system, a deep learning based model was pre-trained on NTU-RGB+D 120 dataset and then it was fine-tuned on our gait dataset.

A Survey on Contrastive Self-supervised Learning

no code implementations31 Oct 2020 Ashish Jaiswal, Ashwin Ramesh Babu, Mohammad Zaki Zadeh, Debapriya Banerjee, Fillia Makedon

Self-supervised learning has gained popularity because of its ability to avoid the cost of annotating large-scale datasets.

Action Recognition Contrastive Learning +4

Self-Supervised Human Activity Recognition by Augmenting Generative Adversarial Networks

no code implementations26 Aug 2020 Mohammad Zaki Zadeh, Ashwin Ramesh Babu, Ashish Jaiswal, Fillia Makedon

Subsequently, results prove superiority of the proposed method over baseline methods for providing a useful representation of videos used in human activity recognition performed on datasets such as KTH, UCF101 and Ball-Drop.

Generative Adversarial Network Human Activity Recognition +1

Towards Deep Learning based Hand Keypoints Detection for Rapid Sequential Movements from RGB Images

no code implementations3 Apr 2018 Srujana Gattupalli, Ashwin Ramesh Babu, James Robert Brady, Fillia Makedon, Vassilis Athitsos

Hand keypoints detection and pose estimation has numerous applications in computer vision, but it is still an unsolved problem in many aspects.

Keypoint Detection

Improving the Accuracy of the CogniLearn System for Cognitive Behavior Assessment

no code implementations25 Mar 2017 Amir Ghaderi, Srujana Gattupalli, Dylan Ebert, Ali Sharifara, Vassilis Athitsos, Fillia Makedon

As a result of these improvements, the accuracy in recognizing cases where subjects touch their toes has gone from 76. 46% in our previous work to 97. 19% in this paper.

Evaluation of Online Dialogue Policy Learning Techniques

no code implementations LREC 2012 Alex Papangelis, ros, Vangelis Karkaletsis, Fillia Makedon

The number of applied Dialogue Systems is ever increasing in several service providing and other applications as a way to efficiently and inexpensively serve large numbers of customers.

Dialogue Management Management +3

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