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Three-dimensional model lightweight method based on unit reuse in three-dimensional scene

A 3D model, 3D scene technology, applied in 3D image processing, image data processing, instruments, etc., can solve the problem of high time and cost, and achieve the effect of reducing time and labor costs

Inactive Publication Date: 2014-03-19
贾金原
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Problems solved by technology

[0009] The purpose of the present invention is to provide a 3D model lightweight method based on unit reuse in a 3D scene, aiming to solve the problem that the existing lightweight 3D model processing methods take a lot of time and cost

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[0038] In order to make the object, technical solution and advantages of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0039] The present invention proposes a 3D model lightweight method for unit reuse, first of all, to find reusable model units in a 3D scene. see Figure 7 , the specific method that the present invention seeks comprises:

[0040] First, perform pose alignment preprocessing on all model units, including: translation-independent processing, rotation-independent processing, and scaling-independent processing;

[0041] Then, the feature descriptor of each unit is extracted under the alignment posture; then all the model units are matched and classified by the matching method, and the reusable model units are found;

[0042] Finally, after finding reusable model units, redundant repeating units are removed to achieve the effect of lightwei...

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Abstract

The invention discloses a three-dimensional model lightweight method based on unit reuse in a three-dimensional scene. The method specifically comprises steps that: attitude alignment preprocessing on all the model units is carried out, and the preprocessing comprises translation-independent processing, rotation-independent processing and zoom-independent processing; after the preprocessing, each characteristic descriptor of each unit under the alignment attitude is extracted, matching and classification for all the model units are carried out through a matching method, and the model units which can be reused are found out; after the model units which can be reused are found out, the redundant repeated units are removed to realize an effect of lightweight model data. The method is employed, whether two model units are same is determined by comparing how many same numbers do voxel states of same indexes have, and lightweight time and manpower cost are obviously reduced compared with other methods.

Description

technical field [0001] The invention relates to technologies in the field of three-dimensional model compression and Web3D, in particular to a method for lightweighting three-dimensional models based on unit reuse in three-dimensional scenes. Background technique [0002] At present, the trend of applying large-scale Web3D content on the mobile Internet is becoming more and more obvious. However, it is full of challenges to build large-scale virtual scenes on the mobile Internet, which is why it has been perplexing and hindering the large-scale popularization of 3D applications on the mobile Internet. The reasons are analyzed as follows: [0003] 1. The amount of data in most of the current 3D models and virtual scenes is too "heavy". [0004] Although the bandwidth and network speed of the mobile Internet are constantly improving, it is still far from enough compared to the 3D models and virtual scenes that it needs to carry. The complexity of 3D models also increases mo...

Claims

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Application Information

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IPC IPC(8): G06T15/00
Inventor 贾金原温来祥
Owner 贾金原
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