A new analysis of a previously studied traveling agent model, showed that there is a relation between the degree of homogeneity of the medium where the agents move, agent motion patterns, and the noise generated from ...A new analysis of a previously studied traveling agent model, showed that there is a relation between the degree of homogeneity of the medium where the agents move, agent motion patterns, and the noise generated from their displacements. We proved that for a particular value of homogeneity, the system self organizes in a state where the agents carry out Lévy walks and the displacement signal corresponds to 1/f noise. Using probabilistic arguments, we conjectured that 1/f noise is a fingerprint of a statistical phase transition, from randomness (disorder) to predictability (order), and that it emerges from the contextuality nature of the system which generates it.展开更多
A model-independent 3-D texture synthesis of physical and stochastic algorithms,based on an amplitude modulation method,is presented to realize 3-D fabric dynamic simulation.The physical functions are built to simulat...A model-independent 3-D texture synthesis of physical and stochastic algorithms,based on an amplitude modulation method,is presented to realize 3-D fabric dynamic simulation.The physical functions are built to simulate fabric basic deformation.The stochastic functions,generated by Perlin noise,are used to simulate fabric natural motion in the wind.The two kinds of functions are synthesized by method of amplitude modulation.As the arithmetic uses stochastic functions in stead of recursive algorithm,it is capable of simulating the fabric material,the wind force and direction in real-time.Given the fabric material and wind strength,the stochastic functions can be created to simulate fabric motion in the wind and this model can be adjusted by controlling some certain parameters to achieve a good simulation effect.This method is conceptually intuitive,computationally fast and efficient.Furthermore,the combination of fabric physical and statistic motion characteristics provides an attractive way to improve the display effect and rate.展开更多
文摘A new analysis of a previously studied traveling agent model, showed that there is a relation between the degree of homogeneity of the medium where the agents move, agent motion patterns, and the noise generated from their displacements. We proved that for a particular value of homogeneity, the system self organizes in a state where the agents carry out Lévy walks and the displacement signal corresponds to 1/f noise. Using probabilistic arguments, we conjectured that 1/f noise is a fingerprint of a statistical phase transition, from randomness (disorder) to predictability (order), and that it emerges from the contextuality nature of the system which generates it.
文摘A model-independent 3-D texture synthesis of physical and stochastic algorithms,based on an amplitude modulation method,is presented to realize 3-D fabric dynamic simulation.The physical functions are built to simulate fabric basic deformation.The stochastic functions,generated by Perlin noise,are used to simulate fabric natural motion in the wind.The two kinds of functions are synthesized by method of amplitude modulation.As the arithmetic uses stochastic functions in stead of recursive algorithm,it is capable of simulating the fabric material,the wind force and direction in real-time.Given the fabric material and wind strength,the stochastic functions can be created to simulate fabric motion in the wind and this model can be adjusted by controlling some certain parameters to achieve a good simulation effect.This method is conceptually intuitive,computationally fast and efficient.Furthermore,the combination of fabric physical and statistic motion characteristics provides an attractive way to improve the display effect and rate.
