CN103455970A - Method for accelerated display of invisible part by three-dimensional digital urban system model - Google Patents
Method for accelerated display of invisible part by three-dimensional digital urban system model Download PDFInfo
- Publication number
- CN103455970A CN103455970A CN2013103910714A CN201310391071A CN103455970A CN 103455970 A CN103455970 A CN 103455970A CN 2013103910714 A CN2013103910714 A CN 2013103910714A CN 201310391071 A CN201310391071 A CN 201310391071A CN 103455970 A CN103455970 A CN 103455970A
- Authority
- CN
- China
- Prior art keywords
- dimensional
- model
- visible part
- monomer
- dimensional digital
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Processing Or Creating Images (AREA)
Abstract
The invention relates to a method for accelerated display of an invisible part by a three-dimensional digital urban system model. The method comprises the following steps that first, a three-dimensional digital urban system is generated; second, a three-dimensional single body model in the geographical coordinate range of the three-dimensional digital urban system in a window is placed in a graphics card to be displayed, all data of the three-dimensional single body model are called into an internal storage, the method of light intersection is used for conducting intersection calculation with the three-dimensional single body model in the window from the viewpoint of the system window, obviously-invisible drawing elements are obtained after calculation, and only visible parts are reserved to be displayed. According to the method for accelerated display of the invisible part by the three-dimensional digital urban system model, part of content is removed from a video memory of the graphics card to be not displayed, the display burden of the graphics card can be greatly lightened, the display efficiency of the system is improved, and therefore efficient and quick system browse display is achieved. The method can further be used for lowering the requirement for system hardware, three-dimensional digital urban efficient and high-quality display can be achieved even by a common commercial PC.
Description
Technical field
The invention belongs to three-dimensional digital city and show field, especially a kind of acceleration display packing of utilizing the non-visible part of three-dimensional digital city system model.
Background technology
Legacy system is called in internal memory by three-dimensional monomer model after usually three-dimensional monomer models all in geographical space scope in form being found while showing three-dimensional model from database, then these models all being called in to the video card video memory all shows, this display mode data volume is very large, video card just there will be system to show slack-off situation when showing, falls frame while browsing serious.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of acceleration display packing of utilizing the non-visible part of three-dimensional digital city system model is provided, and this display packing can show the monomer model in the magnanimity three-dimensional model fast, and the time is short, efficiency is high, lower to hardware requirement.
The present invention solves its technical matters and is achieved through the following technical solutions:
A kind of acceleration display packing of utilizing the non-visible part of three-dimensional digital city system model, the step of its method is as follows:
, utilize computing machine, computer graphical video card, digital camera and stereopsis measurement instrument to set up three-dimensional stereo model by the three-dimensional framework of artificial collection geography information objective, and then the three-dimensional model pinup picture that digital camera is obtained is fitted on three-dimensional stereo model the three-dimensional digital city system of producing;
(2), three-dimensional monomer model in three-dimensional digital city systematic geography coordinate range in form is put into to video card to be shown, in procedure for displaying, the data of all three-dimensional monomer models are all called in internal memory, the method of utilizing ray intersection from system form viewpoint send with form three-dimensional monomer model intersect and calculate, obtain obvious sightless drafting element after calculating, it is the non-visible part of three-dimensional monomer model, the non-visible part of three-dimensional monomer model is deleted from video card, only staying visible part shows, in the process of browsing in system, visual angle can change, the visible part of three-dimensional model also can change, now system recalculates the non-visible part of model, then the three-dimensional monomer model in internal memory is put into to video card, again the non-visible part of three-dimensional monomer model is deleted from video card, only stay and change rear visible part demonstration, having reached the acceleration that utilizes the non-visible part of three-dimensional digital city system model shows.
And the non-visible part of described three-dimensional monomer model comprises the back side of three-dimensional monomer model in form or the part that rear surface model is blocked by front surface model.
Advantage of the present invention and beneficial effect are:
1, the present invention can get rid of a lot of unwanted parts from video card, and the burden when mitigation system video card shows improves display efficiency, and the card while avoiding browse displays pauses, the smooth demonstration while accomplishing to browse.Utilize the method to use ordinary PC also can complete the effect that classic method realizes on the advanced figure workstation, for the user has reduced the hardware use cost.
2, the present invention can calculate the non-visible part of three-dimensional monomer model in the system form, then removing this partial content from the video card video memory does not show, can significantly alleviate video card and show burden, improve the system display efficiency, thereby realize efficiently, system browse displays fast.Use the method can also reduce System Hardware Requirement, even utilize the general commercial PC also can realize efficient, the high-quality demonstration of three-dimensional digital city.
Embodiment
Below by specific embodiment, the invention will be further described, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.
A kind of acceleration display packing of utilizing the non-visible part of three-dimensional digital city system model, the step of its method is as follows:
, utilize computing machine, computer graphical video card, digital camera and stereopsis measurement instrument to set up three-dimensional stereo model by the three-dimensional framework of artificial collection geography information objective, and then the three-dimensional model pinup picture that digital camera is obtained is fitted on three-dimensional stereo model the three-dimensional digital city system of producing;
(2), three-dimensional monomer model in three-dimensional digital city systematic geography coordinate range in form is put into to video card to be shown, in procedure for displaying, the data of all three-dimensional monomer models are all called in internal memory, the method of utilizing ray intersection from system form viewpoint send with form three-dimensional monomer model intersect and calculate, obtain obvious sightless drafting element after calculating, it is the non-visible part of three-dimensional monomer model, the non-visible part of three-dimensional monomer model is deleted from video card, only staying visible part shows, in the process of browsing in system, visual angle can change, the visible part of three-dimensional model also can change, now system recalculates the non-visible part of model, then the three-dimensional monomer model in internal memory is put into to video card, again the non-visible part of three-dimensional monomer model is deleted from video card, only stay and change rear visible part demonstration, having reached the acceleration that utilizes the non-visible part of three-dimensional digital city system model shows, the non-visible part of three-dimensional monomer model comprises the back side of three-dimensional monomer model in form or the part that rear surface model is blocked by front surface model.
While not using the inventive method in three-dimensional digital city system form the larger three-dimensional monomer model that wherein comprised of geographic coordinate scope just more, its data volume is just larger, the phenomenon of browsing card is just more obvious.And can calculate the non-visible part of three-dimensional monomer model those obvious sightless drafting elements of refusal fast while adopting the inventive method, send into the geometry complexity of graphic plotting pipeline thereby reduce, thereby greatly improved the display efficiency of system.For example in the system form, show 3000 three-dimensional monomer models, while using the method, the three-dimensional triangle of model data is approximately 1,700 ten thousand, what after employing the method, in the system form, show is still 3000 three-dimensional monomer models, but the actual three-dimensional triangle that enters video card graphic plotting pipeline is about 9,360,000.Adopt the fine degree of system browse displays after the method not change at all, greatly reduce but draw burden, thereby make the demonstration that system can be smooth.
Claims (2)
1. an acceleration display packing of utilizing the non-visible part of three-dimensional digital city system model, it is characterized in that: the step of the method is as follows:
(1), utilize computing machine, computer graphical video card, digital camera and stereopsis measurement instrument to set up three-dimensional stereo model by the three-dimensional framework of artificial collection geography information objective, and then the three-dimensional model pinup picture that digital camera is obtained is fitted on three-dimensional stereo model the three-dimensional digital city system of producing;
(2), three-dimensional monomer model in three-dimensional digital city systematic geography coordinate range in form is put into to video card to be shown, in procedure for displaying, the data of all three-dimensional monomer models are all called in internal memory, the method of utilizing ray intersection from system form viewpoint send with form three-dimensional monomer model intersect and calculate, obtain obvious sightless drafting element after calculating, it is the non-visible part of three-dimensional monomer model, the non-visible part of three-dimensional monomer model is deleted from video card, only staying visible part shows, in the process of browsing in system, visual angle can change, the visible part of three-dimensional model also can change, now system recalculates the non-visible part of model, then the three-dimensional monomer model in internal memory is put into to video card, again the non-visible part of three-dimensional monomer model is deleted from video card, only stay and change rear visible part demonstration, having reached the acceleration that utilizes the non-visible part of three-dimensional digital city system model shows.
2. the acceleration display packing of utilizing the non-visible part of three-dimensional digital city system model according to claim 1 is characterized in that: the non-visible part of described three-dimensional monomer model comprises the back side of three-dimensional monomer model in form or the part that rear surface model is blocked by front surface model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103910714A CN103455970A (en) | 2013-08-30 | 2013-08-30 | Method for accelerated display of invisible part by three-dimensional digital urban system model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103910714A CN103455970A (en) | 2013-08-30 | 2013-08-30 | Method for accelerated display of invisible part by three-dimensional digital urban system model |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103455970A true CN103455970A (en) | 2013-12-18 |
Family
ID=49738303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103910714A Pending CN103455970A (en) | 2013-08-30 | 2013-08-30 | Method for accelerated display of invisible part by three-dimensional digital urban system model |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103455970A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102044089A (en) * | 2010-09-20 | 2011-05-04 | 董福田 | Method for carrying out self-adaption simplification, gradual transmission and rapid charting on three-dimensional model |
| CN102523473A (en) * | 2011-12-01 | 2012-06-27 | 中兴通讯股份有限公司 | Three-dimensional interface display device, method and terminal |
| CN103106685A (en) * | 2013-01-16 | 2013-05-15 | 东北大学 | Abdominal viscera three dimension visualization method based on graphic processing unit (GPU) |
| CN103198514A (en) * | 2013-03-25 | 2013-07-10 | 南京大学 | Real-time ray cast volume rendering method of three-dimensional earthquake volume data |
-
2013
- 2013-08-30 CN CN2013103910714A patent/CN103455970A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102044089A (en) * | 2010-09-20 | 2011-05-04 | 董福田 | Method for carrying out self-adaption simplification, gradual transmission and rapid charting on three-dimensional model |
| CN102523473A (en) * | 2011-12-01 | 2012-06-27 | 中兴通讯股份有限公司 | Three-dimensional interface display device, method and terminal |
| CN103106685A (en) * | 2013-01-16 | 2013-05-15 | 东北大学 | Abdominal viscera three dimension visualization method based on graphic processing unit (GPU) |
| CN103198514A (en) * | 2013-03-25 | 2013-07-10 | 南京大学 | Real-time ray cast volume rendering method of three-dimensional earthquake volume data |
Non-Patent Citations (3)
| Title |
|---|
| 伏玉琛: "《计算机图形学》", 30 October 2003 * |
| 王冬等: "三维GIS中海量模型调度与存储", 《地理空间信息》 * |
| 韦婷等: "基于可编程GPU的三维场景中树的渲染优化技术", 《科学技术与工程》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104008569B (en) | A kind of 3D scene generating method based on deep video | |
| CN111354062B (en) | Multi-dimensional spatial data rendering method and device | |
| CN107369205B (en) | Mobile terminal city two-dimensional and three-dimensional linkage display method | |
| CN104680532A (en) | Object labeling method and device | |
| CN107341846B (en) | Method and device for displaying large-scale three-dimensional reconstruction scene in real time | |
| CN104504671A (en) | Method for generating virtual-real fusion image for stereo display | |
| CN104183014A (en) | An information labeling method having high fusion degree and oriented to city augmented reality | |
| PH12019500837B1 (en) | Method and apparatus for animating images on mobile devices | |
| US20140225894A1 (en) | 3d-rendering method and device for logical window | |
| CN102937968B (en) | A kind of binocular 3D webpage implementation method based on Canvas and system | |
| CN103164121A (en) | Method and device for terminal software interface display | |
| CN202133993U (en) | Desktop background display processing device of mobile terminal | |
| CN103021020A (en) | Three-dimensional (3D) rendering method based on multiple light sources | |
| CN108804061A (en) | The virtual scene display method of virtual reality system | |
| CN105653350A (en) | Meteorological radar simulation rendering method used for flight simulator | |
| CN103731657B (en) | A kind of to the filling of the cavity containing the empty image processing method after DIBR algorithm process | |
| CN204695673U (en) | A kind of for the three-dimensional digital sand table in urban planning and construction | |
| CN103310409B (en) | A kind of Tile-based renders the fast triangle block method of framework GPU | |
| JP2015036824A5 (en) | ||
| CN103455970A (en) | Method for accelerated display of invisible part by three-dimensional digital urban system model | |
| CN103440118A (en) | Paging multi-level displaying method based on three-dimensional digital city system model | |
| CN103426201A (en) | Mass model data browsing method based on three-dimensional digital city system | |
| CN104463941A (en) | Volume rendering method and device | |
| CN104134201B (en) | The method and apparatus of texture image splicing | |
| CN110662099B (en) | Method and device for displaying bullet screen |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20131218 |