627 citations · 2k across the 11 of their papers we have counts for
11 papers
KBody: Towards general, robust, and aligned monocular whole-body estimation
Nikolaos Zioulis, James F. O'Brien
KBody is a method for fitting a low-dimensional body model to an image. It follows a predict-and-optimize approach, relying on data-driven model estimates for the constraints that…
Animating Fracture
James F. O'Brien, Jessica K. Hodgins
We have developed a simulation technique that uses non-linear finite element analysis and elastic fracture mechanics to compute physically plausible motion for three-dimensional, s…
Combining Active and Passive Simulations for Secondary Motion
James F. O'Brien, Victor B. Zordan, Jessica K. Hodgins
Objects that move in response to the actions of a main character often make an important contribution to the visual richness of an animated scene. We use the term "secondary motion…
Animating Explosions
Gary D. Yngve, James F. O'Brien, Jessica K. Hodgins
In this paper, we introduce techniques for animating explosions and their effects. The primary effect of an explosion is a disturbance that causes a shock wave to propagate through…
Automatic Joint Parameter Estimation from Magnetic Motion Capture Data
James F. O'Brien, Robert E. Bodenheimer, Gabriel J. Brostow +1
This paper describes a technique for using magnetic motion capture data to determine the joint parameters of an articulated hierarchy. This technique makes it possible to determine…
Shape Transformation Using Variational Implicit Functions
Greg Turk, James F. O'Brien
Traditionally, shape transformation using implicit functions is performed in two distinct steps: 1) creating two implicit functions, and 2) interpolating between these two function…
Graphical Modeling and Animation of Brittle Fracture
James F. O'Brien, Jessica K. Hodgins
In this paper, we augment existing techniques for simulating flexible objects to include models for crack initiation and propagation in three-dimensional volumes. By analyzing the…
Perception of Human Motion with Different Geometric Models
Jessica K. Hodgins, James F. O'Brien, Jack Tumblin
Human figures have been animated using a variety of geometric models including stick figures, polygonal models, and NURBS-based models with muscles, flexible skin, or clothing. Thi…
Unique Identification of 50,000+ Virtual Reality Users from Head & Hand Motion Data
Vivek Nair, Wenbo Guo, Justus Mattern +4
With the recent explosive growth of interest and investment in virtual reality (VR) and the so-called "metaverse," public attention has rightly shifted toward the unique security a…
Animating Human Athletics
Jessica K. Hodgins, Wayne L. Wooten, David C. Brogan +1
This paper describes algorithms for the animation of men and women performing three dynamic athletic behaviors: running, bicycling, and vaulting. We animate these behaviors using c…
Dynamic Simulation of Splashing Fluids
James F. O'Brien, Jessica K. Hodgins
In this paper we describe a method for modeling the dynamic behavior of splashing fluids. The model simulates the behavior of a fluid when objects impact or float on its surface. T…