Three-dimensional modeling method and system

A technology of three-dimensional model and construction method, applied in the field of GIS, can solve the problem of large amount of calculation of three-dimensional modeling data, and achieve the effect of reducing complexity and data volume

Inactive Publication Date: 2011-07-06
CHINA DIGITAL VIDEO BEIJING
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a three-dimensional model construction method and system to solve the problem of huge amount of data computation in three-dimensional modeling

Method used

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  • Three-dimensional modeling method and system

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Embodiment Construction

[0065] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0066] Since in the case of a true earth display only part of the area is visible, some areas are outside the display window and some are on the back of the display. In this way, if these invisible places are still modeled, it is undoubtedly a waste of resources and a waste of modeling time. Therefore, the present invention divides the sphere of the earth into a plurality of regional blocks according to the principle of latitude and longitude, models the regional blocks to be displayed, and then stitches these displayed regional blocks to form a visually complete sphere.

[0067] refer to figure 1 , shows a flowchart of a three-dimensional model construction method of the present invention.

[0068] Step 101, divide the data int...

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Abstract

The invention provides a three-dimensional modeling method and a three-dimensional modeling system. The method comprises the following steps of: layering data according to resolution, and blocking the data of each layer; selecting data blocks to be displayed, and establishing block area models; and splicing all the block area models to form a complete three-dimensional model. In the method, the modeling data is layered and blocked, and the data blocks displayed on a back surface and outside a window can be discarded and only the data blocks to be displayed are modeled by the processing of multi-resolution pyramid establishment and blocking, thereby reducing a data volume in a modeling process, reducing the complexity of an algorithm and saving the modeling time.

Description

technical field [0001] The invention relates to the technical field of GIS, in particular to a method and system for building a three-dimensional model. Background technique [0002] 3D modeling is often used in the processing of geographic information data, and has application value in many fields such as oil field development and geological research. 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. [0003] In the virtual earth, the construction of three-dimensional objects is based on the 5D rendering engine. The earth is an object similar to a sphere. For the convenience of modeling, the earth is usually treated as a spherical model. [0004] In the process of building a spherical model, a large amount of terrain data is required. For example, in an area of ​​100×100 squa...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/05
Inventor 龚浩
Owner CHINA DIGITAL VIDEO BEIJING
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