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Petros Koutras

11 accepted papers

2024

MeshPose: Unifying DensePose and 3D Body Mesh Reconstruction

CVPR 2024poster

DensePose provides a pixel-accurate association of images with 3D mesh coordinates but does not provide a 3D mesh while Human Mesh Reconstruction (HMR) systems have high 2D reprojection error as measured by DensePose localization metrics. In this work we introduce MeshPose to jointly tackle DensePos…

2019

A Deep Learning Approach for Multi-View Engagement Estimation of Children in a Child-Robot Joint Attention Task

IROS 2019poster

In this work, we tackle the problem of child engagement estimation while children freely interact with a robot in a friendly, room-like environment. We propose a deep learning-based multi-view solution that takes advantage of recent developments in human pose detection. We extract the child's pose f…

Cited by 35SourceScholar
2019

Fusing Body Posture With Facial Expressions for Joint Recognition of Affect in Child-Robot Interaction

RA-L 2019

In this letter, we address the problem of multi-cue affect recognition in challenging scenarios such as child–robot interaction. Toward this goal we propose a method for automatic recognition of affect that leverages body expressions alongside facial ones, as opposed to traditional methods that typi

Cited by 62SourceScholar
2019

LSTM-based Network for Human Gait Stability Prediction in an Intelligent Robotic Rollator

ICRA 2019poster

In this work, we present a novel framework for on-line human gait stability prediction of the elderly users of an intelligent robotic rollator using Long Short Term Memory (LSTM) networks, fusing multimodal RGB-D and Laser Range Finder (LRF) data from non-wearable sensors. A Deep Learning (DL) based…

Cited by 37SourceScholar
2018

Far-Field Audio-Visual Scene Perception of Multi-Party Human-Robot Interaction for Children and Adults

ICASSP 2018accepted

Human-robot interaction (HRI) is a research area of growing interest with a multitude of applications for both children and adult user groups, as, for example, in edutainment and social robotics. Crucial, however, to its wider adoption remains the robust perception of HRI scenes in natural, untether…

Cited by 0SourceScholar
2018

Multi3: Multi-Sensory Perception System for Multi-Modal Child Interaction with Multiple Robots

ICRA 2018poster

Child-robot interaction is an interdisciplinary research area that has been attracting growing interest, primarily focusing on edutainment applications. A crucial factor to the successful deployment and wide adoption of such applications remains the robust perception of the child's multi-modal actio…

Cited by 0SourceScholar
2018

Multimodal Signal Processing and Learning Aspects of Human-Robot Interaction for an Assistive Bathing Robot

ICASSP 2018accepted

We explore new aspects of assistive living on smart human-robot interaction (HRI) that involve automatic recognition and online validation of speech and gestures in a natural interface, providing social features for HRI. We introduce a whole framework and resources of a real-life scenario for elderl…

Cited by 0SourceScholar
2018

Multimodal Visual Concept Learning With Weakly Supervised Techniques

CVPR 2018poster

Despite the availability of a huge amount of video data accompanied by descriptive texts, it is not always easy to exploit the information contained in natural language in order to automatically recognize video concepts. Towards this goal, in this paper we use textual cues as means of supervision, i…

2018

Object Assembly Guidance in Child-Robot Interaction using RGB-D based 3D Tracking

IROS 2018poster

This work examines how and to what benefit an autonomous humanoid robot can supervise a child in an object assembly task. In order to understand the child's actions, a novel 3D object tracking algorithm for RGB-D data is employed. The tracker consists of two stages: the first performs a tracking-by-…

Cited by 8SourceScholar
2015

Max-product dynamical systems and applications to audio-visual salient event detection in videos

ICASSP 2015accepted

This paper introduces a theory for max-product systems by analyzing them as discrete-time nonlinear dynamical systems that obey a superposition of a weighted maximum type and evolve on nonlinear spaces which we call complete weighted lattices. Special cases of such systems have found applications in…

Cited by 0SourceScholar