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Tree simulation method based on generalized parametric modeling

A parametric modeling and simulation method technology, applied in 3D modeling, image data processing, animation production, etc., can solve the problem of failure to unify trees, failure to establish a geometric model that fully reflects the law of tree growth, and failure to improve rendering speed. and other problems to achieve the effect of smooth growth transition

Active Publication Date: 2014-06-11
BEIJING FORESTRY UNIVERSITY
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Problems solved by technology

[0019] 1) For tree modeling, the existing technology fails to fully unify the appearance of the tree with its internal biological mechanism, and fails to establish a geometric model that fully reflects the growth law of the tree
[0020] 2) For tree drawing, the prior art cannot increase the drawing speed while improving the realism of drawing, and there is no fast drawing technology with good visual effects

Method used

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  • Tree simulation method based on generalized parametric modeling
  • Tree simulation method based on generalized parametric modeling
  • Tree simulation method based on generalized parametric modeling

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Embodiment Construction

[0064] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0065] figure 2 It is a flowchart of the steps of the method provided by the embodiment of the present invention, such as figure 2 As shown, tree simulation methods based on generalized parametric modeling include:

[0066] Step 101, inputting non-geometric parameters related to tree growth;

[0067] Step 102, according to the non-geometric parameters, select and read the corresponding geometric data file; wherein the geometric data file is generated in the following way: based on the measured data, the functional structure model of a tree species is calibrated to obtain the functional structure model of the tree species, Then utilize the functional structure model to generate geometric data files corresponding to different non-geometric parameter values ​​of the tree species;

[0068] Step 103, establishing a preliminary model according t...

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Abstract

The invention provides a tree simulation method based on generalized parametric modeling, comprising the steps of: step 1, inputting nongeometric parameters relevant to tree growth; step 2, selecting and reading corresponding geometrical data according to the nongeometric parameters, wherein the geometric data file is generated by the following mode: calibrating a tree seed function structure model on the basis of real-measurement data to obtain the tree seed function structure model, then utilizing the tree seed function structure model to generate a geometric data file of the tree seeds corresponding to different nongeometric parameter values; step 3, establishing a rudimentary model according to the geometric data file; step 4, inputting geometric parameters of a tree to adjust the rudimentary model so as to obtain a tree model; and step 5, carrying out fast and realistic drawing on the tree model. In the tree simulation method, the appearance form and the inner biological mechanism of the tree can be fully unified together, and a geometric model for fully reflecting the tree growth rule can be established.

Description

technical field [0001] The invention relates to plant modeling and rendering techniques, in particular to a tree simulation method based on generalized parameterized modeling. Background technique [0002] There are many kinds of plants with different shapes and complex structures. People have never stopped exploring the morphological structure and internal mechanism of plants. Observing and understanding objective things in a graphical way is the most convenient cognitive way for human beings. Therefore, with the development of computer technology, researchers have proposed a variety of theories and methods for plant visualization simulation, which has opened up a broad road for plant visualization simulation. [0003] Plant visualization simulation is mainly the visualization of tree models, including tree modeling and tree drawing. These are two different stages of visualization, but both have a common goal - to truly represent trees. The tree modeling and tree drawing a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T17/00G06T13/60
Inventor 曹卫群刘冬香
Owner BEIJING FORESTRY UNIVERSITY
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