Three-dimensional city model self-adaption scheduling method

A 3D model and city model technology, applied in 3D modeling, special data processing applications, image data processing, etc., can solve the problems of slow speed and low efficiency in dispatching 3D city models, and achieve high efficiency and visual conformity, Appropriate visual effects and fast response effects

Active Publication Date: 2014-07-23
CHONGQING SURVEY INST
View PDF3 Cites 30 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limited hardware of ordinary computers, the existing scheduling of 3D city models is slow and

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Three-dimensional city model self-adaption scheduling method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0058] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0059] Such as figure 1 As shown, a three-dimensional city model adaptive scheduling method is carried out according to the following steps:

[0060] Step 1. Obtain a list of 3D model bounding box information;

[0061] Step 2, constructing a fine-grained grid index and a coarse-grained grid index according to the 3D model bounding box information list;

[0062] Step 3, building a 3D scene tree;

[0063] Step 4. Traverse the 3D scene tree, calculate the importance factor of the model request, and trigger the call request;

[0064] Step 5: Establish a call request priority queue, perform I / O scheduling and update the 3D scene tree according to the call request priority queue.

[0065] Described step one is carried out according to the following steps:

[0066] A1. Obtain the list of 3D models of the 3D scene, and perform steps A2 and A3 in sequence for eac...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a three-dimensional city model self-adaption scheduling method, and belongs to the field of three-dimensional digital city and three-dimensional geographical information systems. By means of the three-dimensional city model self-adaption scheduling method, regular gridding indexes are graded, the grading thinking is adopted, the two grades including the fine granularity and the thick granularity are used, the regular gridding indexes are respectively constructed, the problem of scheduling disorders of three-dimensional models in different sizes is solved, and the scheduling efficiency is improved. The self-adaption scheduling method is provided by calculating model request importance degree factors according to the distance between the centers of the models and a current viewpoint, the sizes of the models themselves, and the current states of the models, the model request time, the model request time number and the model request importance degree factors are sufficiently considered to conduct dynamic adjustment, and the high efficiency and the vision coincidence of dynamic adjustment are accordingly achieved. Compared with the scheduling method that only the viewpoint distance is considered, the model scheduling process of the three-dimensional city model self-adaption scheduling method is high in response speed and smooth, and the good view effect is achieved; meanwhile, asynchronous collaboration between scheduling threads and rendering threads is achieved, and therefore the scheduling efficiency is greatly improved.

Description

technical field [0001] The invention belongs to the fields of three-dimensional digital cities and three-dimensional geographic information systems, and in particular relates to a three-dimensional city model adaptive scheduling method. Background technique [0002] The 3D digital city is based on computer technology, multimedia technology and large-scale storage technology, with broadband network as the link, using remote sensing, global positioning system, geographic information system, telemetry, simulation-virtual and other technologies to carry out multi-resolution, Multi-scale, multi-time-space and multi-type three-dimensional description, that is, to use information technology to digitally realize all the contents of the city's past, present and future on the Internet. [0003] Through the three-dimensional expression of basic geographic information such as topography, ground and underground artificial buildings, etc., it reflects the three-dimensional spatial positio...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06F17/30G06T17/05
CPCG06F16/29G06T17/05
Inventor 李锋向泽君王俊勇王国牛邱月刘锟杨颖
Owner CHONGQING SURVEY INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap