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Texture data drawing method and device in three-dimensional modeling

A technology of texture data and 3D modeling, applied in the field of 3D modeling, can solve troublesome problems and achieve the effect of convenient modification

Inactive Publication Date: 2011-07-06
CHINA DIGITAL VIDEO BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this kind of mapping is: since the custom data needs to be modified frequently according to the needs of different users, once this part of the custom data is modified, the texture data and custom data need to be redrawn and mixed together, which is very troublesome

Method used

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  • Texture data drawing method and device in three-dimensional modeling
  • Texture data drawing method and device in three-dimensional modeling
  • Texture data drawing method and device in three-dimensional modeling

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Experimental program
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Embodiment 1

[0030] refer to figure 1 , is a flowchart of a method for rendering texture data in 3D modeling according to Embodiment 1 of the present invention.

[0031] Step 101, obtaining the established 3D model and the corresponding texture file;

[0032] The 3D model is constructed by using elevation data, which is used to present the height fluctuation of landforms; the texture file refers to aerial images or other landform images, which are used to beautify the display effect.

[0033] In this embodiment, the process of using elevation data to construct a three-dimensional model is:

[0034] In the first step, the elevation data is divided into multiple levels according to the resolution, and the data of each level is divided into blocks;

[0035] The second step is to select the data blocks to be displayed layer by layer for modeling;

[0036] Since some areas are behind the display and some are outside the display window, none of these areas need to be modeled.

[0037] The mo...

Embodiment 2

[0048] refer to figure 2 , is a flowchart of a method for rendering texture data in 3D modeling according to Embodiment 2 of the present invention.

[0049] Step 201, modeling the block area;

[0050] Step 202, obtain the corresponding texture data, and map to the established model;

[0051] Step 203, create a blank texture corresponding to the maximum visible range;

[0052] Step 204, draw information required by users such as national borders and rivers on the blank texture;

[0053] In step 205, the drawn texture corresponding block data is divided, and then mapped onto the texture data of the model.

Embodiment 3

[0055] refer to image 3 , is a structural diagram of an apparatus for rendering texture data in 3D modeling according to Embodiment 3 of the present invention.

[0056] Described device mainly comprises:

[0057] Obtaining module 31, for obtaining the established three-dimensional model and corresponding texture file;

[0058] A texture mapping module 32, configured to map texture files onto the three-dimensional model;

[0059] The customized data mapping module 33 is configured to create a blank texture, draw customized data onto the blank texture, and map it onto the texture of the 3D model.

[0060] Wherein, the custom data mapping module 33 creates a blank texture corresponding to the maximum visible range, and then divides the corresponding block data of the drawn texture and maps it to the texture of the model.

[0061] Wherein, the customized data includes temporarily changed or later-generated data, including coloring data of national boundaries and river regions. ...

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Abstract

The invention provides a texture data drawing method and a device in three-dimensional modeling. The method comprises the steps of obtaining the three-dimensional model built and corresponding texture files, mapping the texture files to the three-dimensional model, building a blank texture, and drawing the customizable data on the blank texture and mapping the customizable data on the texture of the three-dimensional model. For the method and device, the texture data and the customizable data are taken as two layers of data to be mapped to the altimetric data respectively, and any modification on the customizable data cannot influence the texture data, thus being very convenient in modification.

Description

technical field [0001] The invention relates to the technical field of three-dimensional modeling, in particular to a method and device for rendering texture data in three-dimensional modeling. Background technique [0002] From the perspective of process, 3D modeling is a method of building a three-dimensional model in space; from the perspective of result, simply speaking, the established model has a sense of space and can see up, down, front, back, left, and right. 3D modeling is often used in the processing of geographic information data, and has application value in many fields such as oilfield development, geological research, and map drawing. [0003] Two kinds of data are used in the process of 3D data modeling: one is elevation data, which is used for modeling; the other is texture data, which is used for texture mapping to beautify its display effect. The height modeling is only to present the height fluctuation of the landform, and the display effect is mainly re...

Claims

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Application Information

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IPC IPC(8): G06T15/10
Inventor 龚浩
Owner CHINA DIGITAL VIDEO BEIJING
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