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Fast drawing forest method of graded hierarchical assembling depth paste-up atlas

A hierarchical and assembled technology, applied in image data processing, 3D modeling, instruments, etc., can solve problems such as consumption, time consumption, and multiple memory, and achieve the effect of reduced consumption, balanced storage cost, and balanced rendering performance

Active Publication Date: 2005-01-12
ZHEJIANG UNIV
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method usually consumes more memory than other methods
In particular, when the video memory of the graphics hardware is significantly smaller than the total needs of all trees, more time will be spent on texture transfers

Method used

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  • Fast drawing forest method of graded hierarchical assembling depth paste-up atlas
  • Fast drawing forest method of graded hierarchical assembling depth paste-up atlas
  • Fast drawing forest method of graded hierarchical assembling depth paste-up atlas

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Embodiment Construction

[0031] like figure 1 As shown, a kind of fast drawing forest method of hierarchical and hierarchical assembled depth mosaic sets proposed by the present invention includes establishing the hierarchical structure of the forest, establishing the hierarchical structure of the LDI-Pack of the tree model, establishing the hierarchical structure of the LDM-Pack, establishing There are six steps of LADM-Pack for each node in the forest structure, selecting a forest node to establish a drawing queue, and drawing a node. Process such as figure 1 It means: firstly, according to the forest distribution and the tree model, establish the hierarchical structure of the forest, then sample the model of the tree, obtain the hierarchical structure of the LDI-Pack of the tree, then establish the hierarchical structure of the LDM-Pack, and establish each node in the forest structure The LADM-Pack, when drawing, selects the forest node to build the drawing queue, and finally draws the node.

[0...

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Abstract

The invention includes following six steps: hierarchical structure of forest, LDI-Pack structure for tree model, LDM-Pack structure, each node LADM-Pack in structure of forest, plotting queue, and node in plotting queue. Advantages of the method are: referencing LOD, IBR, PBR, and Billboard provides good balance among quality of drawing, plotting performance and storage expense; self-adapting texture compression method reduces expenses for texture memory; confluent method realizes graduating transition. The method is applicable to geo information emulation, virtual scene roam and game engine etc. areas.

Description

Technical field [0001] The invention relates to general image data processing or generation, and in particular to a method for rapidly drawing a forest of hierarchically assembled deep mosaic sets. technical background [0002] Interactive roaming of large-scale scenes plays an important role in the field of virtual reality, and realistic forest rendering effects are also an important part of natural scene simulation. However, forests contain a large amount of detailed information, and are affected by lighting and occlusion, making interactive rendering of large-scale forests a difficult problem to solve. The key to solving this problem is how to properly simplify the complex models of trees and forests while maintaining their drawing quality as much as possible. Previous studies on rapid mapping of issues such as forests and vegetation have been classified into five categories: [0003] 1. Geometric level-of-detail LOD model: This method calculates the level-of-detail mod...

Claims

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Application Information

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IPC IPC(8): G06T17/00
Inventor 华炜张淮声鲍虎军
Owner ZHEJIANG UNIV
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