Simulation des effets de deterioration de surfaces rigides pour un rendu realiste (French text).
详细信息
文摘
The generation of realistic images is a major goal of computer graphics research. Since every real object is affected by both its environment and its everyday use, it quickly shows many visually important aging effects that have to be simulated in order to achieve an increased level of realism. Significant amounts of time and efforts are needed to create realistic synthetic objects, so faster and simpler aging simulation methods have an advantage over the other methods.;In this context, we have developed two new aging simulation methods and a framework that enables many aging phenomena to interact with each other. We first addressed the effects of multiple impacts that add small details to the surface of an object. An efficient simulation with adaptive refinement of a surface mesh enables interactive computation and display of the effect of impacts. We also developed a paint peeling simulation inspired by the physical process by considering the stress, strength, elasticity and adhesion in order to create, propagate and intersect the cracks as well as to compute the loss of adhesion and the curling of the peels. The paint properties are represented with a 2D grid, the cracks with sequences of linear segments, and the curling of the peels with a spiral shaped cross section from which a mesh is created locally along each crack. To facilitate the use of the available aging methods, we organized them into categories and identified their parameters, inputs and outputs. Interactions between different methods can thus be realized more rapidly, and it is easier to identify the more laborious interactions.;The implementations of each of our contributions show results with increased realism through new simulation models and the interaction between available methods. The systems we present are easy to use through simple and intuitive parameters. Furthermore, they are efficient and fast with lower computation times compared to prior aging methods.