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Multi-resolution large-scale forest succession process simulation method based on ground power unit (GPU) acceleration

A multi-resolution, process simulation technology, applied in image data processing, instruments, processor architecture/configuration, etc., can solve problems such as low operating efficiency and poor accuracy

Active Publication Date: 2012-08-22
ZHEJIANG UNIV OF TECH
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AI Technical Summary

Problems solved by technology

[0007] In order to overcome the deficiencies of poor correctness and low operating efficiency of existing forest dynamic simulation methods, the present invention provides a multi-resolution large-scale forest succession process simulation method based on GPU acceleration with good correctness and improved operating efficiency

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  • Multi-resolution large-scale forest succession process simulation method based on ground power unit (GPU) acceleration
  • Multi-resolution large-scale forest succession process simulation method based on ground power unit (GPU) acceleration
  • Multi-resolution large-scale forest succession process simulation method based on ground power unit (GPU) acceleration

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Embodiment Construction

[0055] The present invention will be further described below in conjunction with the accompanying drawings.

[0056] refer to Figure 1 to Figure 11 , a GPU-accelerated multi-resolution large-scale forest succession process simulation method requires the following steps:

[0057] 1) Tree and sample plot data organization, this step mainly introduces the organization method of sample plot and tree data in computer memory.

[0058] Tree Data Organization Structure

[0059] Organize data according to the GPU architecture to form a data organization structure that is conducive to GPU computing: all computing data structures will be designed in the form of arrays, of which Figure 5 A schematic diagram of the data organization of the adult tree part of the entire scene, Figure 6 Organize diagrams for clustered data.

[0060] Figure 5 In the middle, the left picture shows the attribute values ​​of the tree object (tree DBH, tree species, three-dimensional space location of ...

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Abstract

The invention discloses a multi-resolution large-scale forest succession process simulation method based on ground power unit (GPU) acceleration. The method comprises the following steps of:1) establishing a tree data organization and a sample plot data organization, organizing the tree data according to a GPU architecture to form a data organization structure favorable for GPU calculation, and establishing a two-dimensional data group structure M with the same size as a sample plot grid for the whole sample plot unit; 2) converting traversal of each tree into a unit thread in a cuda core, calculating the seed distribution condition of plot[k], wherein Y latitude value represents the sample plot, and calculating the seed distribution influence of the sample plot K for all threads on X latitude at the latitude Y=k of the grid of the thread; and 3) performing a seed distribution core method, an NCI method of adult trees, a GPU core method and an illumination GLI core method of the adult trees. The multi-resolution large-scale forest succession process simulation method based on the ground power unit (GPU) acceleration has high accuracy and improves the operating efficiency.

Description

technical field [0001] The invention relates to the field of forest dynamic simulation, in particular to a large-scale forest succession process simulation method. Background technique [0002] For forest dynamic simulation, many growth models have been proposed at home and abroad. Among these models, most of the dynamic simulation of forests are based on the following links: seed distribution stage, germination stage, growth stage, and death stage. In these stages, it includes calculation of lighting model, environment resource calculation, adult tree growth calculation, juvenile tree growth calculation, etc. Traditional forest simulation does not have scientific authenticity. The forest scene is simply superimposed by the tree images drawn by subjective imagination, which does not fully reflect the complexity and objective reality of the forest scene. On the other hand, although there are many computer-simulated forest dynamic simulations based on forestry mathematical mo...

Claims

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Application Information

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IPC IPC(8): G06T1/00G06T1/20
Inventor 范菁嵇海锋汤颖董天阳
Owner ZHEJIANG UNIV OF TECH