A 3D model loading method and device

A three-dimensional model and loading range technology, applied in the field of data processing, can solve the problems of stuck screen crash, slow loading method, etc., to achieve the effect of fast loading speed, improving user experience, and improving loading and display efficiency

Active Publication Date: 2022-01-14
CHINA PETROLEUM & CHEM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to provide a 3D model loading method and device, which are used to solve the problem that the 3D model loading method is slow and causes the screen to crash

Method used

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  • A 3D model loading method and device
  • A 3D model loading method and device
  • A 3D model loading method and device

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Embodiment Construction

[0045] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0046] A kind of three-dimensional model loading method of the present invention, comprises the following steps:

[0047] The area where the 3D scene is located in the 3D information system is gridded, and each grid in the area is indexed, and each 3D model in the area is associated with the grid index where the 3D model is located.

[0048] Obtain the position of the current viewpoint in the 3D information system, and determine the loading range where the 3D model needs to be loaded on the surface of the spherical cap according to the surface of the spherical cap within the field of view of the current viewpoint. Obtain the association between the 3D model and the grid index within the loading range, determine the 3D model to be loaded in the corresponding grid, and load the 3D model. When the position of the current viewpoint in the 3D info...

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Abstract

The invention relates to a three-dimensional model loading method and device, which belong to the technical field of data processing. to associate. Then, according to the current viewpoint position in the 3D information system, determine the loading range of the 3D model that needs to be loaded on the surface of the spherical crown of the earth, determine the grid index corresponding to the 3D model to be loaded according to the loading range, and then according to the established association and the known The mesh index, which determines the 3D model to be loaded. The three-dimensional model loading method proposed by the present invention has a relatively fast loading speed, does not cause the problem of stuck screen, improves the loading and display efficiency, and improves the user experience.

Description

technical field [0001] The invention belongs to the technical field of data processing, and in particular relates to a three-dimensional model loading method and device. Background technique [0002] The 3D information system is based on 3D images, 3D models, and multi-source data, combined with 2D and 3D GIS technology and virtual reality technology, and performs 3D model loading, roaming, data display, etc. in the constructed 3D scene. The process of generating an image from a model with software. [0003] The concepts of world coordinate system and camera coordinate system are introduced in the three-dimensional information system. The camera coordinate system is a Cartesian coordinate system composed of the intersection point of the optical axis and the image plane as the origin of the image coordinate system. The origin of the camera coordinate system is the optical center of the camera. , the x-axis and y-axis are parallel to the X and Y axes of the image, the z-axis ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/29G06T17/05
CPCG06T17/05
Inventor 范传柏张捍卫彭鑫岭吕清林李涛张世杰戴同德郑孝苗
Owner CHINA PETROLEUM & CHEM CORP
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