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With or Without You: Effect of Contextual and Responsive Crowds on VR-based Crowd Motion Capture
Tairan Yin;Ludovic Hoyet;Marc Christie;Marie-Paule Cani;Julien Pettré
While data is vital to better understand and model interactions within human crowds, capturing real crowd motions is extremely challenging. Virtual Reality (VR) demonstrated its potential to help, by immersing users into either simulated virtual crowds based on autonomous agents, or within motion-capture-based crowds. In the latter case, users' own captured motion can be used to progressively exte...Show More
Floor Plan Reconstruction from Sparse Views: Combining Graph Neural Network with Constrained Diffusion
2023 IEEE/CVF International Conference on Computer Vision Workshops (ICCVW)
Year: 2023 | Conference Paper |
Cited by: Papers (2)
We address the challenging problem of floor plan reconstruction from sparse views and a room-connectivity graph. As a first stage, we construct a flexible graph-structure unifying the connectivity graph and the sparse observed data. Using our Graph Neural Network architecture, we can then refine the available information and predict unobserved room properties. In a second step, we introduce a Cons...Show More
The One-Man-Crowd: Single User Generation of Crowd Motions Using Virtual Reality
Tairan Yin;Ludovic Hoyet;Marc Christie;Marie-Paule Cani;Julien Pettré
Crowd motion data is fundamental for understanding and simulating realistic crowd behaviours. Such data is usually collected through controlled experiments to ensure that both desired individual interactions and collective behaviours can be observed. It is however scarce, due to ethical concerns and logistical difficulties involved in its gathering, and only covers a few typical crowd scenarios. I...Show More
See360: Novel Panoramic View Interpolation
We present See360, which is a versatile and efficient framework for 360° panoramic view interpolation using latent space viewpoint estimation. Most of the existing view rendering approaches only focus on indoor or synthetic 3D environments and render new views of small objects. In contrast, we suggest to tackle camera-centered view synthesis as a 2D affine transformation without using point clouds...Show More
Multiple Style Transfer Via Variational Autoencoder
2021 IEEE International Conference on Image Processing (ICIP)
Year: 2021 | Conference Paper |
Cited by: Papers (13)
Modern works on style transfer focus on transferring style from a single image. Recently, some approaches study multiple style transfer; these, however, are either too slow or fail to mix multiple styles. We propose ST-VAE, a Variational AutoEncoder for latent space-based style transfer. It performs multiple style transfer by projecting nonlinear styles to a linear latent space, enabling to merge ...Show More
Unsupervised Real Image Super-Resolution via Generative Variational AutoEncoder
Zhi-Song Liu;Wan-Chi Siu;Li-Wen Wang;Chu-Tak Li;Marie-Paule Cani;Yui-Lam Chan
2020 IEEE/CVF Conference on Computer Vision and Pattern Recognition Workshops (CVPRW)
Year: 2020 | Conference Paper |
Cited by: Papers (24)
Benefited from the deep learning, image Super-Resolution has been one of the most developing research fields in computer vision. Depending upon whether using a discriminator or not, a deep convolutional neural network can provide an image with high fidelity or better perceptual quality. Due to the lack of ground truth images in real life, people prefer a photo-realistic image with low fidelity to ...Show More
Sculpting Mountains: Interactive Terrain Modeling Based on Subsurface Geology
Guillaume Cordonnier;Marie-Paule Cani;Bedrich Benes;Jean Braun;Eric Galin
Most mountain ranges are formed by the compression and folding of colliding tectonic plates. Subduction of one plate causes large-scale asymmetry while their layered composition (or stratigraphy) explains the multi-scale folded strata observed on real terrains. We introduce a novel interactive modeling technique to generate visually plausible, large scale terrains that capture these phenomena. Our...Show More
A system for creating virtual reality content from make-believe games
Adela Barbulescu;Maxime Garcia;Antoine Begault;Marie-Paule Cani;Maxime Portaz;Alexis Viand;Romain Dulery;Laurence Boissieux;Pierre Heinish;Remi Ronfard;Dominique Vaufreydaz
Pretend play is a storytelling technique, naturally used from very young ages, which relies on object substitution to represent the characters of the imagined story. We propose a system which assists the storyteller by generating a virtualized story from a recorded dialogue performed with 3D printed figurines. We capture the gestures and facial expressions of the storyteller using Kinect cameras a...Show More
Simulation of past life: Controlling agent behaviors from the interactions between ethnic groups
Chen Kim Lim;Marie-Paule Cani;Quentin Galvane;Julien Pettre;Abdullah Zawawi Talib
2013 Digital Heritage International Congress (DigitalHeritage)
Year: 2013 | Conference Paper |
Cited by: Papers (6)
Many efforts have been carried out in preserving the history and culture of Penang and also other regions of Malaysia since George Town was elected as a UNESCO living heritage city. This paper presents a method to simulate life in a local trading port in the 1800s, where various populations with very different social rules interacted with each other. These populations included Indian coolies, Mala...Show More
Real-Time Terrain Modeling Using CPU-GPU Coupled Computation
Adrien Bernhardt;Andre Maximo;Luiz Velho;Houssam Hnaidi;Marie-Paule Cani
2011 24th SIBGRAPI Conference on Graphics, Patterns and Images
Year: 2011 | Conference Paper |
Motivated by the importance of having real-time feedback in sketch-based modeling tools, we propose a framework for terrain edition capable of generating and displaying complex and high-resolution terrains. Our system is efficient and fast enough to allow the user to see the terrain morphing at the same time the drawing edition occurs. We have two types of editing interactions: the user can draw s...Show More
Hands on virtual clay
2008 IEEE International Conference on Shape Modeling and Applications
Year: 2008 | Conference Paper |
Cited by: Papers (9)
This paper presents a new interaction system designed for hands-on 3D shape modeling and deformation through natural hand gestures. Our system is made of a Phantom haptic device coupled with a deformable foam ball that supports pressure sensors. These sensors detect forces exerted by the user's fingertips, and are used to control the configuration of a compliant virtual hand that is modeling soft ...Show More
Color Plates
IEEE International Conference on Shape Modeling and Applications 2007 (SMI '07)
Year: 2007 | Conference Paper |
First Page of the Article
Show MoreRealistic Hair from a Sketch
IEEE International Conference on Shape Modeling and Applications 2007 (SMI '07)
Year: 2007 | Conference Paper |
Cited by: Papers (22)
This paper explores a sketch-based interface for quickly yet accurately creating visually realistic hair for virtual characters. Recently, physically-based models have proved successful for generating a wide variety of hair types, but they do not provide a straightforward method for designing target hairstyles. The contribution of this paper is to propose a user-friendly method for controlling suc...Show More
A Survey on Hair Modeling: Styling, Simulation, and Rendering
Kelly Ward;Florence Bertails;Tae-yong Kim;Stephen R. Marschner;Marie-paule Cani;Ming C. Lin
Realistic hair modeling is a fundamental part of creating virtual humans in computer graphics. This paper surveys the state of the art in the major topics of hair modeling: hairstyling, hair simulation, and hair rendering. Because of the difficult, often unsolved problems that arise in alt these areas, a broad diversity of approaches is used, each with strengths that make it appropriate for partic...Show More
Sweepers: swept user-defined tools for modeling by deformation
Proceedings Shape Modeling Applications, 2004.
Year: 2004 | Conference Paper |
We present Sweepers, a new class of space deformations suitable for interactive virtual sculpture. The artist describes a basic deformation as a path through which a tool is moved. Our tools are simply shapes, subsets of 3D space. So we can use shapes already created as customized tools to make more complex shapes or to simplify the modeling process. When a tool is moved it causes a deformation of...Show More
An intestinal surgery simulator: real-time collision processing and visualization
L. Raghupathi;L. Grisoni;F. Faure;D. Marchal;M.-P. Cani;C. Chaillou
This research work is aimed toward the development of a VR-based trainer for colon cancer removal. It enables the surgeons to interactively view and manipulate the concerned virtual organs as during a real surgery. First, we present a method for animating the small intestine and the mesentery (the tissue that connects it to the main vessels) in real-time, thus enabling user interaction through vir...Show More
Real-time dynamic wrinkles
Proceedings Computer Graphics International, 2004.
Year: 2004 | Conference Paper |
This paper proposes a new method for designing dynamic wrinkles that appear and disappear according to the underlying deformation of tissues. The user positions and orients wrinkling tools on a mesh. During animation, geometric wrinkles are generated in real-time in the regions covered by the tools, mimicking resistance to compression of tissues. The wrinkling feature can be added to any existing ...Show More
Interactive global and local deformations for virtual clay
11th Pacific Conference onComputer Graphics and Applications, 2003. Proceedings.
Year: 2003 | Conference Paper |
Making virtual modeling as easy and intuitive as real-clay manipulation is still an unsolved problem. This paper takes a step in this direction: in addition to offering standard features such as addition and removal of material, it uses a new real-time plasticity model to let the user apply local and global deformations such as those made in real clay by pressing with a finger or bending a sculptu...Show More
A procedural approach to animate interactive natural sceneries
Proceedings 11th IEEE International Workshop on Program Comprehension
Year: 2003 | Conference Paper |
Cited by: Papers (12)
This paper presents a method for animating and rendering an interactive natural scenery in real-time. It improves the prairie model of [I I I] by enabling the on-the-fly generation of blades of grass, at three different levels of detail, from user-specified density maps. A new animation function, the tread on grass, is defined to allow virtual objects or characters to crush the grass. The resultin...Show More
Controlled blending in contact situations
Proceedings SMI. Shape Modeling International 2002
Year: 2002 | Conference Paper |
Cited by: Papers (4)
Interactive implicit modelling with complex skeletons was improved with the introduction of primitives defined at different LODs. These implicit primitives use a subdivision curve as a skeleton. In this paper an extension to this representation is presented, in order to make it suitable for the interactive modelling and animation of soft objects in contact situations. The first contribution improv...Show More
Subdivision-curve primitives: a new solution for interactive implicit modeling
Proceedings International Conference on Shape Modeling and Applications
Year: 2001 | Conference Paper |
Cited by: Papers (13)
To remain an attractive model, skeleton-based implicit surfaces have to allow the design and display of shapes at interactive rates. We focus on surfaces whose skeletons are graphs of interconnected curves. We present subdivision-curve primitives that rely on convolution for generating bulge-free and crease-free implicit surfaces. These surfaces are efficiently yet correctly displayed using local ...Show More
Adaptive simulation of soft bodies in real-time
Proceedings Computer Animation 2000
Year: 2000 | Conference Paper |
This paper presents an adaptive technique to animate deformable bodies in real-time. Our method relies on mixed finite-volume/finite-element method applied to an arbitrary non-nested hierarchy of volumetric meshes. We achieve a guaranteed frame rate thanks to a innovative multi-resolution algorithm that locally refines of simplifies the simulated object in order to concentrate computation load whe...Show More
Real-time collision detection for virtual surgery
Proceedings Computer Animation 1999
Year: 1999 | Conference Paper |
We present a simple method for performing real-time collision detection in a virtual surgery environment. The method relies on the graphics hardware for testing the interpenetration between a virtual deformable organ and a rigid tool controlled by the user. The method enables to take into account the motion of the tool between two consecutive time steps. For our specific application, the new metho...Show More
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