CN104268941A - Hot spot forming method and device for simulated three-dimensional map - Google Patents
Hot spot forming method and device for simulated three-dimensional map Download PDFInfo
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- CN104268941A CN104268941A CN201410491166.8A CN201410491166A CN104268941A CN 104268941 A CN104268941 A CN 104268941A CN 201410491166 A CN201410491166 A CN 201410491166A CN 104268941 A CN104268941 A CN 104268941A
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- G06T19/00—Manipulating 3D models or images for computer graphics
- G06T19/20—Editing of 3D images, e.g. changing shapes or colours, aligning objects or positioning parts
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- G06T2219/00—Indexing scheme for manipulating 3D models or images for computer graphics
- G06T2219/20—Indexing scheme for editing of 3D models
- G06T2219/2012—Colour editing, changing, or manipulating; Use of colour codes
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Abstract
The invention relates to a hot spot forming method and device for a simulated three-dimensional map. The method comprises the steps that an auxiliary map is generated according to building models of the simulated three-dimensional map, wherein the auxiliary map comprises a plurality of color blocks, each color block is the same as the corresponding building model in position and shape, and the building models have the geographical coordinate point information; the auxiliary map is vectorized so that all the color blocks can become outline vector diagrams; the hot spot attribute correlation is carried out on the outline vector diagrams and the geographical coordinate points of the corresponding building models to obtain a hot spot data graph; the hot spot data graph and the simulated three-dimensional map are overlapped. The outlines of the building models of the simulated three-dimensional map can be automatically drawn, hot spots can be formed, the workload of manual edge drawing and hot spot information adding is reduced, and the working efficiency is improved.
Description
Technical field
The present invention relates to emulation three-dimensional map manufacturing technology.
Background technology
The definition of hot-zone: hot-zone is in the displaying of emulation three-dimensional map, and the interested region of people, as landmark, stadium, hotel, hotel etc., also can be described as point of interest or interested region.
At present, for emulation three-dimensional map be manufactured with following steps:
1, field data acquisition: collector is by the software systems of field operation geophysical information collecting, gather the outside photo of buildings and the roughly geographical coordinate points of this buildings on the spot, and the specifying information of this buildings, specifying information and the geographic coordinate point phase hot-zone Attribute Association of this buildings.
2, emulate three-dimensional map to make: based on high-resolution satellite image, large scale topographical map or the digital orthoimage of taking photo by plane, the two-dimentional geographic information data such as digital elevation model, 3 d modeling software is utilized to carry out modeling to buildings and earth's surface, and the photographic intelligence of reference field data acquisition is to model pinup picture, realize three-dimensional reconstruction to real atural object, then, play up output effect figure by certain visual angle and viewpoint and mate geographic coordinate and obtain emulating three-dimensional map.
And in emulation three-dimensional map production run, have following two kinds to the typing of hot-zone information and the principal mode of displaying:
1, key element is put: its method is by introducing some key element in three-dimensional artificial map, and the displaying for hot-zone information in information hot-zone, the hot-zone Attribute Association a to key element needing to show.
2, line or face key element: line feature and face key element are identical in essence, namely to the description of hotspot outline.Its method is describe hotspot outline with the form in line or face, and in information hot-zone Attribute Association to face key element for showing the information of hot-zone.
The hot-zone input method of above two kinds of methods passes through artificial tracing, interpretation, mark, entry information the later stage of producing at emulation three-dimensional map for showing, there is labor workload large, the problems such as production efficiency is low in production run.
Summary of the invention
The object of the invention is to propose a kind of hot-zone formation method emulating three-dimensional map, it can solve large, the ineffective problem of labor workload.
In order to achieve the above object, the technical solution adopted in the present invention is as follows:
The hot-zone formation method of emulation three-dimensional map, it comprises the following steps:
Step 1, generate an auxiliary map according to the building model of emulation three-dimensional map, described auxiliary map has multiple color lump, and the position of each color lump is identical with the building model of shape all with corresponding, and described building model has geographic coordinate dot information;
Step 2, vectorized process is carried out to auxiliary map, become a contour vector figure to make each color lump;
Step 3, described contour vector figure is carried out hot-zone Attribute Association with the geographic coordinate point of corresponding building model, to obtain hot-zone data plot;
Step 4, hot-zone data plot and described emulation three-dimensional map are carried out superimposed.
Preferably, in step 1, the color of adjacent color lump is different.
Preferably, following steps are also had after step 1 with before step 3: auxiliary map and described emulation three-dimensional map are carried out geographic registration.
Preferably, following steps are also had between step 1 and step 2:
Step 11, by image classification algorithm, described auxiliary map to be processed, to eliminate the color transition between adjacent color lump.Described image classification algorithm is the one in supervised classification algorithm, unsupervised classification algorithm, object oriented classification algorithm and intensity slicing algorithm.
Step 12, by mode filtering algorithm, described auxiliary map to be processed, to make the potting gum of mistake in adjacent color lump.
Preferably, in step 3, adopt MBR algorithm that described contour vector figure is carried out hot-zone Attribute Association with the geographic coordinate point of corresponding building model.
The invention also discloses a kind of hot-zone forming apparatus emulating three-dimensional map, it comprises with lower module:
Generation module, for generating an auxiliary map according to the building model of emulation three-dimensional map, described auxiliary map has multiple color lump, and the position of each color lump is identical with the building model of shape all with corresponding, and described building model has geographic coordinate dot information;
Vector quantization module, for carrying out vectorized process to auxiliary map, becomes a contour vector figure to make each color lump;
Hot-zone Attribute Association module, for carrying out hot-zone Attribute Association with the geographic coordinate point of corresponding building model, to obtain hot-zone data plot by described contour vector figure;
Overlapped mould, for being undertaken superimposed by hot-zone data plot and described emulation three-dimensional map.
Preferably, also have with lower module between generation module and vector quantization module:
Sort module, for being processed described auxiliary map by image classification algorithm, to eliminate the color transition between adjacent color lump.
Merge module, for being processed described auxiliary map by mode filtering algorithm, to make the potting gum of mistake in adjacent color lump.
The present invention has following beneficial effect:
Automatically can depict the profile of the building model of emulation three-dimensional map and form hot-zone, decreasing the workload of manually retouching limit and adding hot-zone information, improve work efficiency.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the hot-zone formation method of the emulation three-dimensional map of present pre-ferred embodiments;
Fig. 2 is the schematic diagram of the vectorized process of present pre-ferred embodiments;
Fig. 3 is the structural representation of the hot-zone forming apparatus of the emulation three-dimensional map of present pre-ferred embodiments.
Embodiment
Below, by reference to the accompanying drawings and embodiment, the present invention is described further.
As shown in Figure 1, a kind of hot-zone formation method emulating three-dimensional map, it comprises the following steps:
Step S1, generate an auxiliary map according to the building model of emulation three-dimensional map, described auxiliary map has multiple color lump, and the position of each color lump is identical with the building model of shape all with corresponding, and the color of adjacent color lump is different.Described building model has descriptor and geographic coordinate dot information.Descriptor and geographic coordinate dot information provide by field operation information acquisition system.Descriptor refers to the title, brief introduction etc. of buildings.Descriptor and geographic coordinate dot information can form a location point information.
Concrete, first need to produce emulation three-dimensional map, what emulate three-dimensional map is made as prior art, does simple introduction here.Based on high-resolution satellite image, large scale topographical map or the digital orthoimage of taking photo by plane, the two-dimentional geographic information data such as digital elevation model, 3 d modeling software is utilized to carry out modeling to buildings and earth's surface, and the photographic intelligence of reference field data acquisition is to model pinup picture, realizes the three-dimensional reconstruction to real atural object.In modeling process, building model and terrain model are included into different model layer, can conveniently show ground object model in units of layer, hide and the operation such as deletion.
Then arrange the rendering parameter such as light, visual angle and viewpoint to play up three-dimensional modeling data and publish picture, thus obtain an emulation three-dimensional map.Then delete other atural object layer beyond buildings, the three-dimensional model of a preserved building thing, and play up a color lump figure as auxiliary map using rendering parameter such as identical light, visual angle and viewpoints.Because auxiliary map is to emulate three-dimensional map for supergraph and making, therefore, if the buildings of supergraph has intersection, the color lump played up also will inevitably intersect, so need to carry out distinguishing different buildingss with the color lump of different colours.
Step S2, auxiliary map and described emulation three-dimensional map are carried out geographic registration, obtain the auxiliary map of geographic coordinate dot information.
Step S3, by image classification algorithm, described auxiliary map to be processed, to eliminate the color transition between adjacent color lump.Described image classification algorithm is the one in supervised classification algorithm, unsupervised classification algorithm, object oriented classification algorithm and intensity slicing algorithm.
Due to the segment that the auxiliary map obtained is colored, play up publish picture time, it is excessive that the color lump that adjacent building model is corresponding has color, will have influence on the result of vector quantization, so will pass through image classification algorithm, removal color transition.
Step S4, by mode filtering algorithm, described auxiliary map to be processed, to make the potting gum of mistake in adjacent color lump.
Auxiliary map after image classification process, the pixel that may there is only a few in the middle of the image classification result that adjacent two solitary building models are corresponding does not belong to image classification result corresponding to this two solitary buildings model, need by mode filtering, by the potting gum of these mistakes in adjacent image classification.
Step S5, vectorized process is carried out to auxiliary map, become a contour vector figure to make each color lump.As shown in Figure 2, be the auxiliary map after vectorized process.
Step S6, the descriptor of described contour vector figure and corresponding building model and geographic coordinate dot information are carried out hot-zone Attribute Association, to obtain hot-zone data plot.The exterior contour polar plot of buildings and the buildings location point information with descriptor and geographic coordinate point is obtained by above-mentioned steps, and location point is included in the face of contour vector figure, by the mutual alignment relation of point with face, the descriptor contained by buildings location point and geographic coordinate dot information are attached in contour vector figure.
MBR (Minimum bounding rectangle, minimum area-encasing rectangle) algorithm realization hot-zone Attribute Association can be adopted.MBR is the spatial join algorithm of current comparative maturity, its central idea is that the MBR of two objects is non-intersect, their corresponding objects are also non-intersect, its processing procedure is: first, the MBR calculating two spatial objects connects, and the object determining disjoint object and affirmative certainly and intersect is filtered with simple geometry, thus reduce the spatial object Candidate Set of process further, this process can be realized by efficient spatial access methods.Subsequently, in the spatial object needing process further, in order to identify incongruent object, more complicated precise geometrical process (as spatial object decomposition technique etc.) is used to remaining Candidate Set, debug spatial object pair.Thus obtain the final result space object set meeting querying condition.
Step S7, hot-zone data plot and described emulation three-dimensional map are carried out superimposed, thus for emulating the browse queries of three-dimensional map.The effect of final formation is, when user streaks hot-zone with mouse, and the highlighted display of contour vector figure of corresponding buildings, and display description information and geographic coordinate dot information.
In addition, it should be noted that, contour vector figure also can only have geographic coordinate dot information.Step S2 can perform any time after step S1 and before step S5.Step S3 and S4 can omit, and directly carries out step S5, but the result obtained needs certain manual intervention, weeds out useless Vector Message, is suitable editor also can obtains result accurately to useful Vector Message.Also can based on the geometric analysis to three-dimensional model structure, namely with a specific visual angle and viewpoint, visual analyzing or Projection Analysis are carried out to fabric structure, obtain three-dimensional model by this visual angle and viewpoint the projecting figure in a certain plane, to replace step S3 and S4.
As shown in Figure 3, the present embodiment also discloses a kind of hot-zone forming apparatus emulating three-dimensional map, and it comprises with lower module:
Generation module, for generating an auxiliary map according to the building model of emulation three-dimensional map, described auxiliary map has multiple color lump, and the position of each color lump is identical with the building model of shape all with corresponding, and described building model has geographic coordinate dot information;
Registration module, for auxiliary map and described emulation three-dimensional map are carried out geographic registration, obtains the auxiliary map of geographic coordinate dot information;
Sort module, for being processed described auxiliary map by image classification algorithm, to eliminate the color transition between adjacent color lump;
Merge module, for being processed described auxiliary map by mode filtering algorithm, to make the potting gum of mistake in adjacent color lump;
Vector quantization module, for carrying out vectorized process to auxiliary map, becomes a contour vector figure to make each color lump;
Hot-zone Attribute Association module, for carrying out hot-zone Attribute Association with the geographic coordinate point of corresponding building model, to obtain hot-zone data plot by described contour vector figure;
Overlapped mould, for being undertaken superimposed by hot-zone data plot and described emulation three-dimensional map.
For a person skilled in the art, according to technical scheme described above and design, other various corresponding change and distortion can be made, and all these change and distortion all should belong within the protection domain of the claims in the present invention.
Claims (10)
1. emulate the hot-zone formation method of three-dimensional map, it is characterized in that, comprise the following steps:
Step 1, generate an auxiliary map according to the building model of emulation three-dimensional map, described auxiliary map has multiple color lump, and the position of each color lump is identical with the building model of shape all with corresponding, and described building model has geographic coordinate dot information;
Step 2, vectorized process is carried out to auxiliary map, become a contour vector figure to make each color lump;
Step 3, described contour vector figure is carried out hot-zone Attribute Association with the geographic coordinate point of corresponding building model, to obtain hot-zone data plot;
Step 4, hot-zone data plot and described emulation three-dimensional map are carried out superimposed.
2. hot-zone as claimed in claim 1 formation method, it is characterized in that, in step 1, the color of adjacent color lump is different.
3. hot-zone as claimed in claim 1 formation method, is characterized in that, also has following steps after step 1 with before step 3: auxiliary map and described emulation three-dimensional map are carried out geographic registration.
4. hot-zone as claimed in claim 1 formation method, is characterized in that, also has following steps between step 1 and step 2:
Step 11, by image classification algorithm, described auxiliary map to be processed, to eliminate the color transition between adjacent color lump.
5. hot-zone as claimed in claim 4 formation method, it is characterized in that, described image classification algorithm is the one in supervised classification algorithm, unsupervised classification algorithm, object oriented classification algorithm and intensity slicing algorithm.
6. hot-zone as claimed in claim 4 formation method, is characterized in that, also has following steps between step 11 and step 2:
Step 12, by mode filtering algorithm, described auxiliary map to be processed, to make the potting gum of mistake in adjacent color lump.
7. hot-zone as claimed in claim 1 formation method, is characterized in that, in step 3, adopts MBR algorithm that described contour vector figure is carried out hot-zone Attribute Association with the geographic coordinate point of corresponding building model.
8. emulate the hot-zone forming apparatus of three-dimensional map, it is characterized in that, comprise with lower module:
Generation module, for generating an auxiliary map according to the building model of emulation three-dimensional map, described auxiliary map has multiple color lump, and the position of each color lump is identical with the building model of shape all with corresponding, and described building model has geographic coordinate dot information;
Vector quantization module, for carrying out vectorized process to auxiliary map, becomes a contour vector figure to make each color lump;
Hot-zone Attribute Association module, for carrying out hot-zone Attribute Association with the geographic coordinate point of corresponding building model, to obtain hot-zone data plot by described contour vector figure;
Overlapped mould, for being undertaken superimposed by hot-zone data plot and described emulation three-dimensional map.
9. hot-zone as claimed in claim 8 forming apparatus, is characterized in that, also has with lower module between generation module and vector quantization module:
Sort module, for being processed described auxiliary map by image classification algorithm, to eliminate the color transition between adjacent color lump.
10. hot-zone as claimed in claim 9 forming apparatus, is characterized in that, also has following steps between sort module and vector quantization module:
Merge module, for being processed described auxiliary map by mode filtering algorithm, to make the potting gum of mistake in adjacent color lump.
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| CN106021342A (en) * | 2016-05-09 | 2016-10-12 | 东南大学 | A city space growth ring map making and analyzing method |
| CN107424220A (en) * | 2017-08-03 | 2017-12-01 | 武汉华正空间软件技术有限公司 | Three dimensional monolithic family room expression body and its production method and application system in building |
| CN108230445A (en) * | 2017-12-31 | 2018-06-29 | 广州都市圈网络科技有限公司 | A kind of acquisition methods and device of three-dimensional artificial map entities hot-zone attribute information |
| CN108846893A (en) * | 2018-06-27 | 2018-11-20 | 成都四方伟业软件股份有限公司 | Trivector ground drawing generating method and device |
| CN110073416A (en) * | 2016-08-18 | 2019-07-30 | 罗伯特·博世有限公司 | System and method for the Program Generating building figure in the street network of three-dimensional virtual environment |
| CN114638769A (en) * | 2020-12-15 | 2022-06-17 | 武汉市探测者科技有限公司 | 2.5-dimensional map building hot zone automatic extraction method based on image processing algorithm |
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| CN104700710A (en) * | 2015-04-07 | 2015-06-10 | 苏州市测绘院有限责任公司 | Simulation map for house property mapping |
| CN106021342A (en) * | 2016-05-09 | 2016-10-12 | 东南大学 | A city space growth ring map making and analyzing method |
| CN106021342B (en) * | 2016-05-09 | 2019-04-30 | 东南大学 | City space annual ring cartography and analysis method |
| CN110073416A (en) * | 2016-08-18 | 2019-07-30 | 罗伯特·博世有限公司 | System and method for the Program Generating building figure in the street network of three-dimensional virtual environment |
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| CN107424220A (en) * | 2017-08-03 | 2017-12-01 | 武汉华正空间软件技术有限公司 | Three dimensional monolithic family room expression body and its production method and application system in building |
| CN108230445A (en) * | 2017-12-31 | 2018-06-29 | 广州都市圈网络科技有限公司 | A kind of acquisition methods and device of three-dimensional artificial map entities hot-zone attribute information |
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