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Fluid simulation rendering method and device

A fluid simulation and fluid technology, applied in image data processing, animation production, instruments, etc., can solve the problems of wasting system resources and slow rendering of fluid simulation, saving system resources, improving speed and precision.

Active Publication Date: 2012-06-20
TSINGHUA UNIV
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Problems solved by technology

[0006] In terms of viewpoint-based simulation rendering, Barran et al. published the article "ViewDependent Fluid Dynamics" in 2006, dividing the entire simulation area into a thin layer structure, but its viewpoint is always fixed at a fixed point in the scene, and the entire simulation area with the same simulation accuracy, making fluid simulations render slower and wasting system resources

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  • Fluid simulation rendering method and device
  • Fluid simulation rendering method and device

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Embodiment Construction

[0032] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0033] Such as figure 1 As shown, the fluid simulation rendering method of the present invention includes the following steps:

[0034] A: One-dimensionalize the fluid flow field in two-dimensional or three-dimensional space by using space-filling curves;

[0035] B: The importance of different areas in the flow field determined according to the user's viewpoint, and the empirical mode decomposition algorithm is used to decompose the one-dimensional fluid flow field into components of different frequencies;

[0036] C: performing simulations with different precisions on the components of different frequencies according to the decomposition results;

[0037] D: Add the s...

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Abstract

The invention discloses a fluid simulation rendering method, relating to the technical field of computer image rendering. The fluid simulation rendering method comprises the steps of: A, converting a fluid flow field in a two-dimension or three-dimension space into a one-dimension fluid flow field by using a space filling curve; B, decomposing the one-dimension fluid flow field into components with different frequencies by using an empirical mode decomposition algorithm according to the importance of different areas in the flow field determined on the basis of user view points; C, performing simulation with different precisions on the components with different frequencies according to analysis results; and D, summing the simulation results of the components to obtain a total simulation result serving as output. According to the fluid simulation rendering method and device, the speed and the fineness of the fluid simulation rendering can be improved; meanwhile, the system resources can be effectively saved.

Description

technical field [0001] The invention relates to the technical field of computer image rendering, in particular to a fluid simulation rendering method and device. Background technique [0002] In the field of computer image rendering, the method of fluid simulation rendering by solving the Navier-Stokes equation has achieved great success. [0003] However, fluid simulation is constrained by the current limited computing power in generating sufficient fluid details, thus becoming an important concern of researchers. Unlike computational physics, fluid simulation rendering results don't need to match reality exactly, just to be visually pleasing. [0004] This means that different parts of the fluid can be simulated with varying degrees of accuracy using information from viewpoints. This technique is often referred to as "layer of detail" technique. For example, in the "Hybrid Images" published by Oliva et al. in 2006, the high-frequency components in the region closer to t...

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Application Information

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IPC IPC(8): G06T13/60G06T13/80
Inventor 胡事民李晨锋高岳任博
Owner TSINGHUA UNIV
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