Lightweight modeling and visualization method for large-scale plant communities on the web

A plant community, lightweight technology, applied in network data browsing optimization, network data retrieval, 3D image processing and other directions, can solve problems such as too much pressure on data transmission, not identical trees, long modeling time, etc. Achieve the effect of saving memory, realizing lightweight construction, and improving data transmission speed

Active Publication Date: 2021-12-07
JILIN ANIMATION INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Large-scale forest scenes require diversity, almost every tree is not exactly the same, and replication cannot be used to achieve large-scale scenes, but storing each different model in the database will add too much pressure to data transmission
Although the plant modeling method based on rules and sketches is low in cost, it has poor authenticity and low model quality
Although the image-based plant modeling method has high authenticity and accurate models, it is easily disturbed by noise
The plant modeling method based on point cloud has high model quality, but the cost of building the model is high and the modeling time is long

Method used

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  • Lightweight modeling and visualization method for large-scale plant communities on the web
  • Lightweight modeling and visualization method for large-scale plant communities on the web
  • Lightweight modeling and visualization method for large-scale plant communities on the web

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Example 1, arbor modeling:

[0065] The most important part of arbor modeling should be skeleton extraction. The more accurate the skeleton extraction, the higher the naturalness and authenticity of the arbor model. Although the cost of plant modeling based on rules and sketches is low, the authenticity is poor and the quality of the model is low. Although the image-based plant modeling method has high authenticity and accurate models, it is easily disturbed by noise. The plant modeling method based on point cloud has high model quality, but the cost of building the model is high and the modeling time is long. Through the analysis of the above modeling methods, a new arbor modeling method is proposed, which uses skeleton points and circular frustum splicing to form the arbor skeleton.

[0066] Skeleton point information is mentioned many times in lightweight modeling. Skeleton points are very important feature points in arbor modeling and important information for bui...

Embodiment 2

[0084] Embodiment two, shrub community landscape modeling

[0085] The growth characteristics of shrubs are different from those of trees, but compared with herbaceous plants and crops, there are more characteristics between shrubs and trees. Therefore, this application provides another shrub modeling method, the transformation from arbor to shrub, through this This method not only provides a large number of shrub models, but also achieves a more realistic shrub landscape.

[0086] For the difference between shrubs and trees, there are four main points in the process of turning trees into shrubs:

[0087] First, the trunk should be as small as possible. This is a big difference between shrubs and trees. The trunk of the tree is thick and the growth nodes of the branches are high, while the growth nodes of the branches of the shrub are low, and the trunk cannot even be distinguished. Therefore, the first The first step is to shrink the trunk of the arbor, which can be reduced ...

Embodiment 3

[0098] Example 3, modeling of crop community landscape and herbaceous plant landscape

[0099] Unlike trees and shrubs, there is too much difference between crops and herbaceous plants. Herbaceous plants are different from leaves to flowers. Compared with the other three types of plants, herbaceous plants are very short and have almost no skeleton, so they are not suitable for transition algorithm. At present, the most common way of modeling herbaceous plants is to use textures instead of models. The first reason is that textures are smaller than models, and the pressure on memory and rendering is also lower. Another reason is that herbaceous plants appear in large numbers in forest scenes. , the order of magnitude is the largest, but it is very small and difficult to observe, so the use of textures is the most ideal modeling method.

[0100] Since the modeling method of texture is adopted, it is difficult to avoid the observation of "patches". The flower on the left is almos...

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Abstract

The invention discloses a lightweight modeling and visualization method for a large-scale plant community oriented to the web page. A small amount of plant data is used as the original input, and a skeleton extraction method is used to represent the plant model as a skeleton, and it is divided into different parts. The collection of branches forms the original branch component library. Secondly, the geometric topology of the plant model is unified by adding virtual branches, and the corresponding plant shape space is constructed. Through the multi-shape interpolation or statistics of the plant model in the shape space Analysis and modeling can generate multiple new plant model sample data, and then match the new plant model sample data with the corresponding branches in the original branch component library to replace similar branches and retain difference branches , to obtain the final plant model data; convert the final plant model data into lightweight plant data in the form of a skeleton representation, and the web page receives the lightweight plant data for rendering, realizing web page visualization of large-scale plant communities.

Description

technical field [0001] The invention relates to the technical field of three-dimensional modeling and rendering, in particular to a web-side-oriented lightweight modeling and visualization method for large-scale plant communities. Background technique [0002] How to realize the visualization of large-scale plant scenes in a realistic, lightweight and real-time manner has always been an important issue in Web3D applications. Whether in games or animation, the rendering of large-scale plant scenes is very common. Currently. 3D plant modeling has been studied in different fields such as computer graphics, computer vision, and plant science. According to various modeling goals, the current 3D plant modeling techniques can be divided into two categories: data-driven realistic plant modeling and computer virtual plant modeling. [0003] Large-scale forest scenes require diversity. Almost every tree is not exactly the same, and replication cannot be used to achieve large-scale ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/957G06T15/00
CPCG06T15/005G06F16/957
Inventor 郑立国贾金原王冠王一同
Owner JILIN ANIMATION INST
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