Publications by Sofien Bouaziz

Quasi-Newton Methods for Real-Time Simulation of Hyperelastic Materials

We present a new method for real-time physics-based simulation supporting many different types of hyperelastic materials. Previous methods such as Position-Based or Projective Dynamics are fast but support only a limited selection of materials; even classi ...

2017

Online modeling for real-time facial animation

Sofien Bouaziz, Mark Pauly

Embodiments relate to a method for real-time facial animation, and a processing device for real-time facial animation. The method includes providing a dynamic expression model, receiving tracking data corresponding to a facial expression of a user, estimat ...

2016

Modern techniques and applications for real-time non-rigid registration

Sofien Bouaziz, Mark Pauly, Andrea Tagliasacchi, Hao Li

Registration algorithms are an essential component of many computer graphics and computer vision systems. With recent technological advances in RGBD sensors (color plus depth), an active area of research is in techniques combining color, geometry, and lear ...

2016

Beyond Developable: Computational Design and Fabrication with Auxetic Materials

Sofien Bouaziz, Mark Pauly, Bailin Deng, Mina Konakovic Lukovic

We present a computational method for interactive 3D design and rationalization of surfaces via auxetic materials, i.e., flat flexible material that can stretch uniformly up to a certain extent. A key motivation for studying such material is that one can a ...

Assoc Computing Machinery2016

Realtime Face Tracking and Animation

Sofien Bouaziz

Capturing and processing human geometry, appearance, and motion is at the core of computer graphics, computer vision, and human-computer interaction. The high complexity of human geometry and motion dynamics, and the high sensitivity of the human visual sy ...

EPFL2015

Guided Mesh Normal Filtering

Sofien Bouaziz, Bailin Deng

The joint bilateral filter is a variant of the standard bilateral filter, where the range kernel is evaluated using a guidance signal instead of the original signal. It has been successfully applied to various image processing problems, where it provides m ...

Wiley-Blackwell2015

ShapeOp - A Robust and Extensible Geometric Modelling Paradigm

Sofien Bouaziz, Mark Pauly, Mario Moacir Deuss, Bailin Deng, Anders Holden Deleuran

We present ShapeOp, a robust and extensible geometric modelling paradigm. ShapeOp builds on top of the state-of-the-art physics solver (Bouaziz et al. in ACM Trans Graph 33:154:1–154:11, 2014). We discuss the main theoretical advantages of the underlying s ...

Springer2015

Robust Articulated-ICP for Real-Time Hand Tracking

Sofien Bouaziz, Mark Pauly, Anastasia Tkach, Andrea Tagliasacchi

We present a robust method for capturing articulated hand motions in realtime using a single depth camera. Our system is based on a realtime registration process that accurately reconstructs hand poses by fitting a 3D articulated hand model to depth images ...

2015

Dynamic 3D Avatar Creation from Hand-held Video Input

Sofien Bouaziz, Mark Pauly, Alexandru Eugen Ichim

We present a complete pipeline for creating fully rigged, personalized 3D facial avatars from hand-held video. Our system faithfully recovers facial expression dynamics of the user by adapting a blendshape template to an image sequence of recorded expressi ...

Assoc Computing Machinery2015

Interactive design exploration for constrained meshes

Sofien Bouaziz, Alexandre Kaspar, Yuliy Gennadievich Schwartzburg, Mark Pauly, Mario Moacir Deuss, Bailin Deng

In architectural design, surface shapes are commonly subject to geometric constraints imposed by material, fabrication or assembly. Rationalization algorithms can convert a freeform design into a form feasible for production, but often require design modif ...

2015

Projective Dynamics: Fusing Constraint Projections for Fast Simulation

Ladislav Kavan, Sofien Bouaziz, Mark Pauly

We present a new method for implicit time integration of physical systems. Our approach builds a bridge between nodal Finite Element methods and Position Based Dynamics, leading to a simple, efficient, robust, yet accurate solver that supports many differe ...

2014

Local Barycentric Coordinates

Sofien Bouaziz, Bailin Deng

Barycentric coordinates yield a powerful and yet simple paradigm to interpolate data values on polyhedral domains. They represent interior points of the domain as an affine combination of a set of control points, defining an interpolation scheme for any fu ...

2014

Dynamic 2D/3D Registration

Sofien Bouaziz, Mark Pauly, Andrea Tagliasacchi

Image and geometry registration algorithms are an essential component of many computer graphics and computer vision systems. With recent technological advances in RGB-D sensors, such as the Microsoft Kinect or Asus Xtion Live, robust algorithms that combin ...

The Eurographics Association2014

Exploring Local Modifications for Constrained Meshes

Sofien Bouaziz, Yuliy Gennadievich Schwartzburg, Mark Pauly, Mario Moacir Deuss, Bailin Deng

Mesh editing under constraints is a challenging task with numerous applications in geometric modeling, industrial design, and architectural form finding. Recent methods support constraint-based exploration of meshes with fixed connectivity, but commonly la ...

Wiley-Blackwell2013

Sparse Iterative Closest Point

Sofien Bouaziz, Mark Pauly, Andrea Tagliasacchi

Rigid registration of two geometric data sets is essential in many applications, including robot navigation, surface reconstruction, and shape matching. Most commonly, variants of the Iterative Closest Point (ICP) algorithm are employed for this task. Thes ...

2013

Dynamic 2D/3D registration for the Kinect

Sofien Bouaziz, Mark Pauly

Image and geometry registration algorithms are essential components of many computer graphics and computer vision systems. With recent technological advances in RGB-D sensors, robust algorithms that combine 2D image and 3D geometry registration have become ...

ACM2013

Online Modeling For Realtime Facial Animation

Sofien Bouaziz, Mark Pauly

We present a new algorithm for realtime face tracking on commodity RGB-D sensing devices. Our method requires no user-specific training or calibration, or any other form of manual assistance, thus enabling a range of new applications in performance-based f ...

2013

Shape-Up: Shaping Discrete Geometry with Projections

Sofien Bouaziz, Yuliy Gennadievich Schwartzburg, Mark Pauly, Mario Moacir Deuss

We introduce a uniﬁed optimization framework for geometry processing based on shape constraints. These constraints preserve or prescribe the shape of subsets of the points of a geometric data set, such as polygons, one-ring cells, volume elements, or featu ...

Wiley-Blackwell2012

Realtime Performance-Based Facial Animation

Sofien Bouaziz, Mark Pauly, Hao Li

This paper presents a system for performance-based character animation that enables any user to control the facial expressions of a digital avatar in realtime. The user is recorded in a natural environment using a non-intrusive, commercially available 3D s ...

2011