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Smoke model space editing method based on streamline deformation

A technology of model space and deformation model, applied in the field of motion path editing of smoke model based on streamline deformation, to achieve the effect of increasing calculation speed, improving calculation accuracy and reducing interaction requirements

Inactive Publication Date: 2015-02-18
BEIHANG UNIV
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Problems solved by technology

[0009] The technology of the present invention solves the problem: overcomes some limitations of the prior art, provides a smoke model motion path editing method based on streamline deformation, effectively reduces calculation consumption, and quickly constructs realistic and reasonable editing data to adapt to various Requirements for complex virtual application scenarios

Method used

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  • Smoke model space editing method based on streamline deformation
  • Smoke model space editing method based on streamline deformation
  • Smoke model space editing method based on streamline deformation

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Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] The main flowchart of the inventive method is as figure 1 As shown, the specific steps are as follows:

[0024] (1) Layer fixed-point iterative calculation method is used to solve the velocity field of the smoke model data sequence.

[0025] The calculation of the velocity field in the present invention is a key issue, and the specific algorithm flow is as follows figure 2 As shown, using the classical optical flow method model, based on the constraints of light intensity consistency and local smoothness constraints, the solution model is obtained:

[0026] E OF ( u ‾ ) = ∫ Ω Ψ D ( | ...

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Abstract

The invention relates to a smoke model space editing method based on streamline deformation. The method is used for solving a space deformation model by the streamline deformation so as to edit smoke model data according to the model. The method comprises the following steps: (1) solving the velocity field of a smoke model data sequence based on a double-layer fixed-point iteration calculation method; (2) carrying out streamline visualization based on the velocity field obtained in the step (1), and extracting a main streamline representing the movement trend; (3) alternatively inputting edit paths by users to generate a streamline of edit data; (4) establishing and solving the space deformation model by taking the two groups of corresponding streamlines obtained in the steps (2) and (3) as constraint conditions; (5) solving the edit data of the smoke by combining the obtained space deformation model. After the method is used, the requirements for smoke model data space editing of the users can be met, and two-dimensional and three-dimensional smoke model data can be efficiently and vividly edited.

Description

technical field [0001] The invention belongs to the field of computer virtual reality, and specifically relates to a method for editing motion path of a smoke model based on streamline deformation. Background technique [0002] The study of fluids such as smoke, water, and fog is an important research hotspot in the field of computer graphics, and how to obtain realistic fluid data on a computer is one of the challenging topics. In addition, fluid data is widely used in fields such as film and television special effects, animation generation, virtual environment, and simulation research. The modeling and rendering effects of fluid directly determine the visual effect of the simulation environment. Therefore, the research on fluid modeling technology in graphics has very important significance. [0003] The smoke model to be studied in this article is a dynamic and non-homogeneous fluid. In the study of graphics, the modeling of such data is often carried out by two methods,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00G06T19/20
CPCG06T19/20
Inventor 齐越周博生
Owner BEIHANG UNIV
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