Nikolaos Sarafianos
nikos.sarafianos@gmail.com

My friends call me Nikos, and I work as a research scientist at Meta Reality Labs where I'm focusing on 3D generative models with applications to virtual humans. In the past I've worked on 3D reconstruction, dense correspondences and neural rendering. I obtained my Ph.D. from the University of Houston where I worked on 3D human pose estimation, visual attributes and text-to-image retrieval. I currently serve as a mentor at Deep Learning Indaba.


News

  • July 2023: Our work on neural surface fields for human modeling has been accepted to ICCV 2023
  • Mar. 2023: Our work on viewpoint-independent video editing with 3D GANs has been accepted to CVPR 2023
  • Oct. 2022: Our work Pose-NDF, won the best paper honorable mention award at ECCV 2022
  • July 2022: 2 Papers accepted to ECCV 2022
  • June 2022: Happy to welcome Anna Frühstück from KAUST as a Research Intern at Reality Labs Research
  • Mar. 2022: 2 Papers accepted to CVPR 2022

Work Experience

                         Research Scientist (June 2019 - Present)

            Research Scientist Intern (Summer 2018)
      Research Scientist Intern (Summer 2017)

Publications

NSF: Neural Surface Fields for Human Modeling from Monocular Depth
Y. Xue, B. Bhatnagar, R. Marin, N. Sarafianos, Y. Xu, G. Pons-Moll, T. Tung
ICCV 2023
Paper   Webpage     Code



VIVE3D: Viewpoint-Independent Video Editing using 3D-Aware GANs
A. Frühstück, N. Sarafianos, Y. Xu, P. Wonka, T. Tung
CVPR 2023
Paper   Webpage     Code



Pose-NDF: Modelling Human Pose Manifolds with Neural Distance Fields
G. Tiwari, D. Antic, J. Lenssen, N. Sarafianos, T. Tung, G. Pons-Moll
ECCV 2022 (Oral)

Best Paper Honorable Mention

Paper   Webpage     Code



Free-Viewpoint RGB-D Human Performance Capture and Rendering
P. Nguyen, N. Sarafianos, C. Lassner, J. Heikkilä, T. Tung
ECCV 2022
Paper   Webpage  



BodyMap: Learning Full-Body Dense Correspondence Map
A. Ianina, N. Sarafianos, Y. Xu, I. Rocco, T. Tung
CVPR 2022
Paper   Webpage   Video  



SPAMs: Structured Implicit Parametric Models
P. Palafox, N. Sarafianos, T. Tung, A. Dai
CVPR 2022
Paper   Webpage   Video  



Animatable Neural Radiance Fields from Monocular RGB-D
T. Wang, N. Sarafianos, M.H. Yang, T. Tung
arxiv 2022
Paper   Webpage  



Neural-GIF: Neural Generalized Implicit Functions for Animating People in Clothing
G. Tiwari, N. Sarafianos, T. Tung, G. Pons-Moll
ICCV 2021
Paper   Code   Video   Poster   BibTex    Webpage  



Semi-supervised Synthesis of High-Resolution Editable Textures for 3D Humans
B. Chaudhuri, N. Sarafianos, L. Shapiro, T. Tung
CVPR 2021
Paper   Supplementary   Video   Poster   BibTex    Webpage  



Adversarial Representation Learning for Text-to-Image Matching
N. Sarafianos, X. Xu, I.A. Kakadiaris
ICCV 2019
Paper   Supplementary   Video   Poster   BibTex



Deep Imbalanced Attribute Classification using Visual Attention Aggregation
N. Sarafianos, X. Xu, I.A. Kakadiaris
ECCV 2018
Paper   Supplementary   Code [Third Party]   Poster   BibTex




Curriculum Learning of Visual Attribute Clusters for Multi-Task Classification
N. Sarafianos, T. Giannakopoulos, C. Nikou, I.A. Kakadiaris
Pattern Recognition 2018
Paper   BibTex



Curriculum Learning for Multi-Task Classification of Visual Attributes
N. Sarafianos, T. Giannakopoulos, C. Nikou, I.A. Kakadiaris
ICCV Workshops 2017
Paper   Poster   BibTex



Adaptive SVM+: Learning with Privileged Information for Domain Adaptation
N. Sarafianos, M. Vrigkas, I.A. Kakadiaris
ICCV Workshops 2017
Paper   Supplementary   Poster   BibTex


3D Human Pose Estimation: A Review of the Literature and Analysis of Covariates
N. Sarafianos, B. Boteanu, B. Ionescu, I.A. Kakadiaris
CVIU 2016
Paper   Data   BibTex


Predicting Privileged Information for Height Estimation
N. Sarafianos, C. Nikou, I.A. Kakadiaris
ICPR 2016
Paper   Poster   Code   BibTex




Show me your body: Gender classification from still images
I.A. Kakadiaris, N. Sarafianos, C. Nikou
ICIP 2016
Paper   Poster   BibTex



Audio-visual speaker diarization using Fisher linear semi-discriminant analysis
N. Sarafianos, T. Giannakopoulos, S. Petridis
Multimedia Tools and Applications 2014
Paper   Code   Audio Library   BibTex