A multi-level linkage method and system for virtual forest simulation information based on scene roaming

A scene and forest technology, which is applied in the multi-level linkage method of virtual forest simulation information and its system field, can solve the problems of time-consuming calculation process, failure to establish correlation relationship of different granularity scene information, and affecting large-scale forest scene drawing and roaming speed, etc. , to achieve the effect of reducing time-consuming, improving rapidity, and fast and accurate conversion

Active Publication Date: 2014-10-29
ZHEJIANG UNIV OF TECH
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AI Technical Summary

Problems solved by technology

These systems are often individually designed and developed for individual needs. When users need to switch from one granularity scene to another granularity scene, they need to recalculate according to the tree growth model and environmental factors. The calculation process is very time-consuming.
Since these virtual forest simulation systems do not establish the correlation between different granularity scene information, it is impossible to quickly switch from one granularity simulation scene to another granularity simulation scene, which seriously affects the large-scale forest scene drawing and roaming speed.

Method used

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  • A multi-level linkage method and system for virtual forest simulation information based on scene roaming
  • A multi-level linkage method and system for virtual forest simulation information based on scene roaming
  • A multi-level linkage method and system for virtual forest simulation information based on scene roaming

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Embodiment 1

[0036] refer to figure 2 , a multi-level linkage method of virtual forest simulation information based on scene roaming, the method is:

[0037](1) Use the forest growth model to calculate the biomass of each tree, and search the tree visualization model corresponding to the tree biomass from the scene database according to the calculated biomass of each tree, and draw a virtual forest scene on the computer screen; The forest growth model is at least one of fine-grained, medium-grained, and coarse-grained forest growth models, and the tree biomass refers to the total amount of organic matter accumulated by trees in a certain period of time, which can be accumulated per unit time. The average quality is represented, and the tree visualization model can be a three-dimensional tree model, a tree picture or other symbols representing trees;

[0038] (2) Automatically identify simulation events in the process of real-time interactive roaming in the virtual forest simulation scene...

Embodiment 2

[0045] refer to figure 1 , a system for implementing the multi-level linkage method of virtual forest simulation information based on scene roaming as described above, the system is composed of a simulation application layer 1 and a data layer 2. Simulation application layer 1 provides virtual forest simulation process and parameter visualization management and maintenance functions, including simulation parameter module 3, growth simulation module 4, information linkage module 5, roaming event monitoring and management module 6, policy management module 7, growth model Management module 8, scene management module 9, etc.; data layer 2 provides growth model data information in the process of virtual forest simulation, and scene data and linkage strategy information when converting forest scene simulation information with different scene granularity, including scene linkage strategy library 10. Growth model library 11 and scene database 12.

[0046] The growth model management...

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Abstract

The invention relates to a virtual forest emulation information multi-stage linkage method based on scene roaming. The method comprises the following steps that: (1) a forest growth model is used for calculating the biomass size of each tree, and a virtual forest scene is drawn on a computer screen; (2) emulation events in the virtual forest emulation scene real-time interaction roaming process are identified in an automatic mode; (3) a view point and tree visibility distance reference table is formed; (4) a new view point and visibility distance reference table is formed; (5) a linkage mode of the virtual forest emulation information during the granularity conversion is determined; (6) linkage strategies for modifying the tree biomass in the forest scene are determined; and (7) a tree visual model corresponding to the new tree biomass is found from a scene database, and the virtual forest scene is drawn again on the computer screen. The invention also relates to a system for realizing the method. The method and the system effectively solve the problem of too long time consumption during the virtual forest emulation scene conversion, and the scene operation real-time performance is improved.

Description

technical field [0001] The invention belongs to the field of virtual reality technology, and relates to a multi-level linkage method and system for virtual forest simulation information based on scene roaming. Background technique [0002] The simulation of large-scale virtual forest scene includes the changes of tree growth at different time and space scales under the influence of dynamic environment. On the spatio-temporal scale, the forest scene can be divided into three different granularity scenes: fine-grained single-tree scene, medium-grained stand scene and coarse-grained full-stand scene. Existing forest simulation systems generally use a corresponding growth model or simulation technology to perform single-grained forest growth simulation for their specific application requirements. These systems are often individually designed and developed for individual needs. When users need to switch from one granularity scene to another granularity scene, they need to recalc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T17/00G06T15/00
Inventor 董天阳夏佳佳范菁苏中原
Owner ZHEJIANG UNIV OF TECH
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