Carlos Aliaga

I'm a senior research scientist at Meta Reality Labs Research since 2019, working on physically based inverse and forward rendering of virtual humans. Prior to that, I was a Lead Scientist at SEDDI Labs, a start-up based in Madrid aiming to create photorealistic virtual replias of real garments.

I got my Ph.D. in the Graphics & Imaging Lab at University of Zaragoza, Spain, under the supervision of Prof. Dr. Diego Gutiérrez and Dr. Adrian Jarabo. My research focused on the perception and modeling of virtual humans. During this time, I interned at Walt Disney Animation Studios in 2014 and 2016, and Technicolor in 2016. I also had a short stay as a research engineer at Porto’s Science Faculty in 2012.

Publications

My work lies at the intersection of computer graphics and computer vision, focusing on modeling and reconstruction of humans (shape and especially appearance), leveraging physically-based forward and inverse rendering techniques often supported by AI solutions.

A Realistic Multi-scale Surface-based Cloth Appearance Model
J. Zhu, C. Hery, L. Bode, C. Aliaga, A. Jarabo, L.-Q. Yan, M. J.-Y. Chiang
SIGGRAPH 2024
In ACM SIGGRAPH 2024 Conference Papers (SIGGRAPH '24). Association for Computing Machinery, New York, NY, USA, Article 89, 1–10.
ACM DL / Cite

A Realistic Surface-based Cloth Rendering Model
J. Zhu, A. Jarabo, C. Aliaga, L.-Q. Yan, M. J.-Y. Chiang
SIGGRAPH 2023
In ACM SIGGRAPH 2023 Conference Proceedings (SIGGRAPH ’23). Association for Computing Machinery, New York, NY, USA, Article 5, 1–9.
ACM DL / Cite

A Hyperspectral Space of Skin Tones for Inverse Rendering of Biophysical Skin Properties.
C. Aliaga, M. Xia, H. Xie, A. Jarabo, G. Braun, C. Hery
EGSR 2023
Computer Graphics Forum 42, e14887 (2023).
Supplemental / Code / EG DigLib / Cite

Accelerating Hair Rendering by Learning High-Order Scattered Radiance.
A. KT, A. Jarabo, C. Aliaga, M. J.-Y. Chiang, O. Maury, C. Hery, P. J. Narayanan, G. Nam
EGSR 2023
Computer Graphics Forum 42, e14895 (2023).
Project Page / Code / Cite

Neural Relighting with Subsurface Scattering by Learning the Radiance Transfer Gradient.
S. Zhu, S. Saito, A. Bozic, C. Aliaga, T. Darrell, C. Lassner
arXiv 2023
arXiv preprint arXiv:2306.09322 (2023).
Cite

Practical aspects of spectral data in digital content production.
A. Weidlich, C. LeGendre, C. Aliaga, C. Hery, J.-M. Aubry, J. Vorba, D. Siragusano, R. Kirk
SIGGRAPH Course 2022
In ACM SIGGRAPH 2022 Courses (SIGGRAPH ’22). Association for Computing Machinery, New York, NY, USA, Article 11, i–96..
Self Shadow Blog / Video / ACM DL / Cite

Estimation of Spectral Biophysical Skin Properties from Captured RGB Albedo.
C. Aliaga, C. Hery, M. Xia
arXiv 2022
arXiv preprint arXiv:2201.10695 (2022).
Cite

Human Hair Inverse Rendering using Multi-View Photometric data.
T. Sun, G. Nam, C. Aliaga, C. Hery, R. Ramamoorthi
EGSR 2021
In Eurographics Symposium on Rendering (2021). The Eurographics Association, 2021.
FB Research / Cite

Perceived match between own and observed models’ bodies: influence of face, viewpoints, and body size.
L. De Coster, P. Sanchez-Herrero, C. Aliaga, M.A. Otaduy, J. Lopez-Moreno, A. Tajadura-Jimenez
Nature Sci. Rep. 2020
Sci Rep 10, 13991 (2020).
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Recent advances in fabric appearance reproduction.
C. Castillo, J. Lopez-Moreno, C. Aliaga
Computers & Graphics 2019
Comput. Graph. 84 (2019), 103–121.
Cite

Microscale Optical Capture System for Digital Fabric Recreation.
R. Alcain, C. Heras, I. Salinas, J. Lopez, C. Aliaga
Photoptics 2019
In Photoptics (2019), pp. 114–119.
Preprint / Cite

A radiative transfer framework for spatially-correlated materials.
A. Jarabo, C. Aliaga, D. Gutierrez
SIGGRAPH 2018
ACM Trans. Graph. 37, 4, Article 83 (August 2018), 13 pages.
Cite

Towards Practical Rendering of Fiber-Level Cloth Appearance Models.
A. Alejandre, C. Aliaga, J. Marco, A. Jarabo, A. Mu˜noz
MAM 2018
In Proceedings of the Workshop on Material Appearance Modeling (MAM ’18). The Eurographics Association, 2018.
ACM DL / Cite

Challenges in appearance capture and predictive modeling of textile materials.
C. Castillo, C. Aliaga, J. Lopez-Moreno
MAM 2017
In Proceedings of the Workshop on Material Appearance Modeling (MAM ’17). Eurographics Association, Goslar, DEU, 21–24.
ACM DL / Cite

Modeling and Perception of the Appearance of Virtual Humans.
C. Aliaga
supervised by A. Jarabo and D. Gutierrez.
April 2017

Mixed illumination analysis in single image for interactive color grading.
S. Duchene, C. Aliaga, T. Pouli, P. Perez
NPAR 2017
In Proceedings of the Symposium on Non-Photorealistic Animation and Rendering (NPAR ’17). Association for Computing Machinery, New York, NY, USA, Article 10, 1–10.
Cite

An Appearance Model for Textile Fibers.
C. Aliaga, C. Castillo, D. Gutierrez, M. A. Otaduy, J. Lopez-Moreno, A. Jarabo
EGSR 2017
Comput. Graph. Forum 36, 4 (July 2017), 35–45.
ACM DL / Cite

To stylize or not to stylize? The effect of shape and material stylization on the perception of computer-generated faces.
E. Zell, C. Aliaga, A. Jarabo, K. Zibrek, D. Gutierrez, R. McDonnell, M. Botsch
SIGGRAPH 2015
ACM Trans. Graph. 34, 6, Article 184 (November 2015), 12 pages.
ACM DL / Cite

Sackcloth or silk? The impact of appearance vs dynamics on the perception of animated cloth.
C. Aliaga, C. O’Sullivan, D. Gutierrez, R. Tamstorf
SAP 2015
In Proceedings of the ACM SIGGRAPH Symposium on Applied Perception (SAP ’15). Association for Computing Machinery, New York, NY, USA, 41–46.
Cite

A Biophysically-Based Model of the Optical Properties of Skin Aging.
J. Iglesias-Guitian, C. Aliaga, A. Jarabo, D. Gutierrez
Eurographics 2015
Comput. Graph. Forum 34, 2 (May 2015), 45–55
Project Page / Two Minute Papers / Cite

A Biophysically-based Appearance Model for Skin Aging
C. Aliaga
Universidad de Zaragoza 2013
Masters Thesis

Special Section on Advanced Displays: Display adaptive 3D content remapping.
B. Masia, G. Wetzstein, C. Aliaga, R. Raskar, D. Gutierrez
Computers & Graphics 2013
Comput. Graph. 37, 8 (December 2013), 983–996.
Cite

Global Illumination in Characteristic Point Maps
C. Aliaga
Universidad de Zaragoza 2012
Final Degree Project (Spanish)

Posters

A fiber-level model for predictive cloth rendering.
C. Aliaga, C. Castillo, D. Gutierrez, M. A. Otaduy, J. Lopez-Moreno, A. Jarabo
SIGGRAPH Posters 2016
In ACM SIGGRAPH 2016 Posters (SIGGRAPH ’16). Association for Computing Machinery, New York, NY, USA, Article 66, 1–2.
3rd Place at the ACM Student Research Competition :)
Cite

Biophysically-based Aging of Human Skin Appearance.
C. Aliaga, José Iglesias, Adrian Jarabo, José I. Echevarría, Diego Gutiérrez
CEIG Posters 2014
Spanish Computer Graphics Conference 2014.
Cite

Perceptually-optimized content remapping for automultiscopic displays.
B. Masia, G. Wetzstein, C. Aliaga, R. Raskar, D. Gutierrez
Eurographics Symposium on Rendering 2013
Eurographics Symposium on Rendering 2013 Posters

Perceptually-optimized content remapping for automultiscopic displays.
B. Masia, G. Wetzstein, C. Aliaga, R. Raskar, D. Gutierrez
SIGGRAPH Posters 2012
In ACM SIGGRAPH 2012 Posters (SIGGRAPH ’12). Association for Computing Machinery, New York, NY, USA, Article 63, 1.
Cite