Three-dimensional Cloud-based Particle System Simulation Method And Study

Simulation of irregular objects in computer graphics has always been the most challenging research directions. In the past 20 years, domestic and foreign researchers have made a number of irregular simulation approach, the current in accordance with the different modeling techniques, divided into particle systems, procedural texture functions, physical processes, the application of fractal geometry simulate irregular objects , using L-systems is limited iterations, use the Billboard simulate irregular objects in several ways.Although the six modeling methods proposed above generate more realistic cloud models, but most of cloud generated by modeling the shape of the simulation are random, or just for a certain type of cloud, you want to produce different types of clouds (cumulus, cirrus, stratus) can not use the same modeling method. While the physical process-based approach can solve this problem, can produce different types of clouds, but the large time and space consumption, the current computer work platform can not meet its requirements. Therefore, this article has explored a computer vision-based technologies and three-dimensional cloud particle system simulation.This method can simulate different types of clouds, such as stratus, cumulus, cirrus and so on. The main idea is first to use computer vision technology from the real cloud taken to extract three-dimensional contours of the cloud shape, and then use the particle system to populate the three-dimensional space. In the concrete realization, we begin to recover from the cloud the two-dimensional body shape; and then using computer vision technology to expand the two-dimensional contours of three-dimensional space so as to constitute a three-dimensional cloud body; and finally the use of hundreds of thousands of particles fill the three-dimensional space. In this paper, particle systems and texture during the method of combining the function of the natural features of the cloud model simulation, the model drawn in a specific application of the process of texture mapping and Billboard technologies to achieve, which proposes a combination of a variety of modeling methods irregular objects, a new simulation method.