EP2030173A1 - Procédé pour la génération d'un modèle informatique tridimensionnel d'une ville - Google Patents

Procédé pour la génération d'un modèle informatique tridimensionnel d'une ville

Info

Publication number
EP2030173A1
EP2030173A1 EP07765506A EP07765506A EP2030173A1 EP 2030173 A1 EP2030173 A1 EP 2030173A1 EP 07765506 A EP07765506 A EP 07765506A EP 07765506 A EP07765506 A EP 07765506A EP 2030173 A1 EP2030173 A1 EP 2030173A1
Authority
EP
European Patent Office
Prior art keywords
building
dimensional
types
data
attributes
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.)
Withdrawn
Application number
EP07765506A
Other languages
German (de)
English (en)
Inventor
Jochen Hummel
Dietrich Charisius
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP2030173A1 publication Critical patent/EP2030173A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
    • G06T17/05—Geographic models

Definitions

  • the invention relates to a method for generating a three-dimensional computer model of a city, in particular a computer model of an existing city in reality.
  • German patent application DE-A-197 46 639 a method for the digital detection of spatial objects and scenes for a three-dimensional image card is described, which should allow a more accurate representation of the three-dimensional objects.
  • it is proposed to assign digitized aerial photographs of real objects or scenes to precise position coordinates and to make supplementary terrestrial images of the relevant real objects or scenes that provide views of the objects in question or scenes from different positions and / or directions that are not directly accessed from the original aerial images can.
  • information about the height of the objects in question and their surface design can be derived from the terrestrial images and linked by a computer to three-dimensional representations of the objects. This can create a photorealistic computer model of a city or complex building that can be manipulated using interactive programming techniques.
  • the present invention is therefore based on the technical problem of providing a method for generating a three-dimensional computer model of a real city, which enables a realistic generation of the computer model on the basis of as few initial data as possible, and immersing the user in the virtual reality ( "Immersion") and the amount of data required to model the city and the corresponding computational effort are kept as low as possible.
  • Immersion virtual reality
  • the image information is advantageously obtained from aerial photos, satellite photos and / or terrestrial building pictures. From aerial photos or satellite photos one can directly determine the orthographic projection of the buildings to be modeled. However, these figures do not give any information about the façade designs of the buildings. In this case, additional images are required, which also represent the facade. Again, these may be aerial photographs obtained, for example, at an oblique viewing angle or purely terrestrially derived building pictures.
  • Such an assignment can be carried out fully automatically by means of a suitable pattern recognition method.
  • people are used as controllers to make the assignment of the image information and the most suitable building type or at least to check.
  • the predefined set of three-dimensional building types may have a hierarchical structure.
  • the uppermost level of the hierarchical structure can be associated with facade types of the buildings, while the lower levels are assigned data relating, for example, to the facade texture, façade color, window details, extensions, roof types, roof texture or roof color.
  • the predefined set of three-dimensional building types consists of objects that are defined by polygon area or so-called non-linear parameterized functions. Examples of such functions used in three-dimensional computer graphics are the so-called NURBS (Non Uniform Rational B-Splines).
  • NURBS Non Uniform Rational B-Splines
  • the building types defined in this way can be easily scaled and displayed with different resolutions, generally referred to as Level of Detail (LOD), depending on the magnification scale selected by the user.
  • LOD Level of Detail
  • the three-dimensional building types provided in the predefined set can, according to an advantageous embodiment of the method according to the invention, take into account country-specific or regionally typical characteristics of the real city to be modeled. Practically every city has architectural features that may arise, for example, from the geographical location, the historical urban development or the individual building regulations. Taking into account such special features, on the one hand the realism of the computer models can be improved and, on the other hand, the number of building types and building attributes to be traveled can be reduced
  • the method according to the invention is particularly preferably used in interactive virtual realities which are accessible to one or more users within a computer network.
  • a particularly popular form of such virtual realities is currently the so-called “Massively Multiplayer Online Roié Playing Games” (MMORPGs), which often several thousand users can simultaneously play together over the Internet.
  • MMORPGs Massively Multiplayer Online Roié Playing Games
  • the online games called “World of Warcraft”, “Second Life” or “Project Entropia” in which users can act via virtual, graphically three-dimensionally animated proxies called “avatars.”
  • the corresponding virtual realities are pure Computer-generated fantasy worlds
  • the method according to the invention here offers the possibility of realizing real cities in a realistic manner simulate, so that such MMORPGs can be played in a realistic environment.
  • Figure 2 is a schematic representation of the inventive method for
  • FIG. 2 now shows a schematic representation of the method according to the invention:
  • FIG. 3 shows a schematic representation of the architecture of a computer system suitable for carrying out the method according to the invention.
  • the computer system is constructed in a client / server architecture.
  • a server unit 110 which may, for example, be constructed as a load-balanced server cluster, which is connected to that of a database 111, on which the data necessary for generating the virtual reality are kept.
  • Each virtual reality user has installed on his local machine a client 120 that includes a 3-D game engine 121 and a user interface 122.
  • client may access the server unit 110 and the database 111 via an Internet connection 130.
  • the data required to generate the virtual reality can be transmitted, for example, in the form of chunk files 123, from which the 3-D game engine constructs the virtual reality.
  • User interface 171 which may be integrated into the user interface 160 of the authoring tool, contains the predefined basic models and in particular the rules by which the three-dimensional buildings / objects are to be generated on the basis of the existing geographic information.
  • the corresponding data are stored for a specific area of the virtual reality, for example in the form of binary transport files via an interface 141 in the database 111.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Software Systems (AREA)
  • Remote Sensing (AREA)
  • Computer Graphics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Processing Or Creating Images (AREA)
  • Instructional Devices (AREA)

Abstract

La présente invention concerne un procédé pour la génération d'un modèle informatique tridimensionnel d'une ville réelle à partir de géoinformations de la ville réelle à modéliser. On génère des modèles informatiques tridimensionnels des bâtiments de la ville sur la base d'un jeu prédéfini de types de bâtiments tridimensionnels ainsi que d'attributs de bâtiments avec lesquels les types de bâtiments prédéfinis peuvent varier.
EP07765506A 2006-06-19 2007-06-19 Procédé pour la génération d'un modèle informatique tridimensionnel d'une ville Withdrawn EP2030173A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610028086 DE102006028086A1 (de) 2006-06-19 2006-06-19 Verfahren zur Erzeugung eines dreidimensionalen Computermodells einer Stadt
PCT/EP2007/056100 WO2007147830A1 (fr) 2006-06-19 2007-06-19 Procédé pour la génération d'un modèle informatique tridimensionnel d'une ville

Publications (1)

Publication Number Publication Date
EP2030173A1 true EP2030173A1 (fr) 2009-03-04

Family

ID=38440268

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07765506A Withdrawn EP2030173A1 (fr) 2006-06-19 2007-06-19 Procédé pour la génération d'un modèle informatique tridimensionnel d'une ville

Country Status (3)

Country Link
EP (1) EP2030173A1 (fr)
DE (1) DE102006028086A1 (fr)
WO (1) WO2007147830A1 (fr)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007035844A1 (de) 2007-07-31 2009-02-05 Jochen Hummel Verfahren zur computerunterstützten Erzeugung einer interaktiven dreidimensionalen virtuellen Realität
US9953459B2 (en) 2008-11-05 2018-04-24 Hover Inc. Computer vision database platform for a three-dimensional mapping system
US8422825B1 (en) 2008-11-05 2013-04-16 Hover Inc. Method and system for geometry extraction, 3D visualization and analysis using arbitrary oblique imagery
US10861224B2 (en) 2013-07-23 2020-12-08 Hover Inc. 3D building analyzer
US11721066B2 (en) 2013-07-23 2023-08-08 Hover Inc. 3D building model materials auto-populator
US11670046B2 (en) 2013-07-23 2023-06-06 Hover Inc. 3D building analyzer
US10127721B2 (en) 2013-07-25 2018-11-13 Hover Inc. Method and system for displaying and navigating an optimal multi-dimensional building model
WO2015061735A1 (fr) 2013-10-25 2015-04-30 Hover Inc. Estimations de dimensions d'une imagerie au niveau du sol géoréférencée à l'aide d'une imagerie orthogonale
US9830681B2 (en) 2014-01-31 2017-11-28 Hover Inc. Multi-dimensional model dimensioning and scale error correction
US10133830B2 (en) 2015-01-30 2018-11-20 Hover Inc. Scaling in a multi-dimensional building model
US10410412B2 (en) 2015-05-29 2019-09-10 Hover Inc. Real-time processing of captured building imagery
US9934608B2 (en) 2015-05-29 2018-04-03 Hover Inc. Graphical overlay guide for interface
US10178303B2 (en) 2015-05-29 2019-01-08 Hover Inc. Directed image capture
US10038838B2 (en) 2015-05-29 2018-07-31 Hover Inc. Directed image capture
US10410413B2 (en) 2015-05-29 2019-09-10 Hover Inc. Image capture for a multi-dimensional building model
CN109947880A (zh) * 2019-02-22 2019-06-28 苏州晓齐信息科技有限公司 三维空间信息服务于城乡一体化管理异构数据融合方法
CN110148219A (zh) * 2019-04-03 2019-08-20 南昌云虫科技有限公司 3d模型的创建方法
CN112214483B (zh) * 2019-07-11 2024-08-06 广联达科技股份有限公司 一种城市信息模型中数据的分析、关联、存储和访问方法和装置
CN110874391B (zh) * 2019-09-29 2022-12-30 北京旋极伏羲科技有限公司 一种基于城市空间立体网格模型的数据融合与展示方法
CN111599023B (zh) * 2020-04-02 2023-06-16 思创数码科技股份有限公司 一种大批量给城市建筑模型贴图方法和装置
CN115220819B (zh) * 2022-08-19 2024-05-03 广州凡拓动漫科技有限公司 一种基于3d软件的规划随机错层体块插件系统
CN117610417B (zh) * 2023-11-27 2024-07-02 北京光之路视觉科技有限公司 一种虚拟城市构建方法及系统

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007147830A1 *

Also Published As

Publication number Publication date
DE102006028086A1 (de) 2007-12-20
WO2007147830A1 (fr) 2007-12-27

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