A Fluid Simulation Method Based on Coupling of Video Reconstruction and Euler Model
A fluid simulation and video technology, applied in the field of computer graphics, can solve problems such as loss of fluid details, and achieve the effect of improving realism
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[0059] The present invention is described in detail below in conjunction with accompanying drawing:
[0060] The present invention comprises the following steps:
[0061] 1) Three-dimensional density field reconstruction
[0062] To extend a single direction video to two directions, first use the least squares matching method to obtain an approximate density field, then iteratively improve iteratively through the expectation maximization algorithm, and finally obtain a smooth and symmetrical density field.
[0063] 2) Euler's method to solve the N-S equation
[0064] For the inviscid N-S equation, the velocity field and density field of the next frame are obtained by solving the time-splitting method through advection, external force and projection, etc.
[0065] 3) Three-dimensional velocity field reconstruction
[0066] The reconstructed density field is used as prior information, and the result of Euler's method is used for correction to obtain a three-dimensional veloci...
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