Sites Inria

Version française

ARTIS Research team

Acquisition, representation and transformations for image synthesis

  • Leader : Nicolas Holzschuch
  • Research center(s) : CRI Grenoble - Rhône-Alpes
  • Field : Perception, Cognition, Interaction
  • Theme : Interaction and Visualization
  • Partner(s) : Université Joseph Fourier (Grenoble),Institut polytechnique de Grenoble,CNRS
  • Collaborator(s) : Laboratoire Jean Kuntzmann (LJK) (UMR5224)

Team presentation

The ARTIS project-team is located at INRIA Grenoble - Rhône-Alpes Research Centre in Montbonnot, France. The project-team was created in January, 2003, based on the observation that classical image synthesis methods appear limited with respect to the variety of current applications. In particular, the typical approach consisting in separately modeling a 3D geometry and a set of photometric properties (reflectance, lighting conditions), then in computing their interaction to produce a picture, is too restrictive. First, this approach severely limits the adaptability to particular constraints or freedom allowed in each application (such as precision, real-time, interactivity, uncertainty about input data...); second, it restricts the possible image classes and does not easily lend itself to new uses in a more "expressive" way, such as for illustration, where a form of hierarchy on image constituents must be constructed. One of the goals of the project-team is the definition of a more generic framework for the creation of synthetic images, integrating elements of 3D geometry, of 2D geometry (built from these), of appearance (photometry, textures...), of rendering style, and of importance or relevance for a given application. The ARTIS project-team therefore deals with multiple aspects of image synthesis: model creation from various sources of data, transformations between these models, rendering and imaging algorithms, and the adaptation of the models and algorithms to various constraints or application contexts.

Research themes

The main research directions in ARTIS deal with Analysis and simulation of lighting effects. Development of hierarchical simulation techniques integrating the most general and realistic effects, fast rendering, inverse lighting, relighting, data acquisition based on lighting analysis. Expressive ("non-photorealistic") rendering. Definition and identification of rendering styles. Style extraction from existing documents. Development of new view models (mixture of 3d and 2d) and new rendering techniques. Model simplification and transformation. Simplification of geometry and appearance, image-based representations, model transformation for various applications, detail creation and creation of virtual models from real data. Our target applications include - 3D image synthesis - Illustration (animation, technical illustration) - Virtual and augmented reality - Virtual archeology - Radiative transfer simulation

International and industrial relations

ARTIS and the MIT Laboratory for Computer science have joined forces in a common project sponsored by INRIA.

Keywords: Image synthesis Lighting simulation Expressive rendering Model acquisition geometric simplification Model transformations