CN107481296A - A kind of method and device that building height is shown based on two-dimensional map - Google Patents
A kind of method and device that building height is shown based on two-dimensional map Download PDFInfo
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- CN107481296A CN107481296A CN201710651773.XA CN201710651773A CN107481296A CN 107481296 A CN107481296 A CN 107481296A CN 201710651773 A CN201710651773 A CN 201710651773A CN 107481296 A CN107481296 A CN 107481296A
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- G06T11/001—Texturing; Colouring; Generation of texture or colour
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Abstract
The present invention relates to a kind of method that building height is shown based on two-dimensional map, comprise the following steps:The projection of building is drawn on two-dimensional map by two-dimensional graphicses technology, and makes building that height be presented the projection process of building;New altitude information is built when getting, changes height parameter of the building on two-dimensional map, new height is presented in processing to the projection to building again.Based on two-dimensional map, the building of display height is drawn out on map by using two-dimensional graphicses technology, and when needing to change the height of building, only need to change the parameter that building height is built, obtain detailed information without carrying out exploration to building, gathered data is simple, and based on two-dimensional map, relative to three-dimensional map without complicated calculating, it is possible to reach the effect on three maps on two-dimensional map, mitigate the amount of calculation of system.
Description
Technical field
The present invention relates to areas of information technology, more particularly to a kind of method and dress that building height is shown based on two-dimensional map
Put.
Background technology
Electronic map (English:Electronic map), i.e. numerical map is to utilize computer technology, in a digital manner
Storage and the map consulted.And electronic map mainly has two-dimensional map and three-dimensional map.Two-dimensional map is plane, and plane map is
Horizontal plane is replaced into level surface, by that will build along plumb line direction projection in the plane, without third dimension, can not display that and build
The height built.And three-dimensional map be based on electronic three-dimensional map database, according to a certain percentage to real world or its
Three-dimensional, the abstract description (or comprehensive) of middle a part of one or more aspects, has an abundant third dimension, its iconicity,
Feature is much stronger than two-dimensional map, but three-dimensional map needs substantial amounts of data acquisition and complicated calculating, increases the calculating of system
Burden.
The content of the invention
For this reason, it may be necessary to provide a kind of collection and calculating that can both show building floor height, while reduce data, mitigate system
The method and device that building height is shown based on two-dimensional map of computation burden.
To achieve the above object, inventor provide it is a kind of based on two-dimensional map show building height method, including with
Lower step:
Draw the projection of building on two-dimensional map by two-dimensional graphicses technology, and make the building be in the projection process of building
Now height;
New altitude information is built when getting, changes height parameter of the building on two-dimensional map, the projection to building
Again new height is presented in processing.
Further optimization, described " projection of building is drawn on two-dimensional map by two-dimensional graphicses technology, and to building
Projection process makes building that height be presented " specifically include:
The projection of building is drawn on two-dimensional map using two-dimensional graphicses technology, according to the angle of setting, by the throwing of building
Shadow carries out extension and forms drafting building in proportion, and the extension by building projection makes building present highly.
Further optimization, it is described " when get build new altitude information and change after, change building in two-dimensional map
Upper height parameter, new height is presented in processing to the projection to building again " include:
When get build new altitude information and change after, change the height built and built on two-dimensional map
Parameter, change the length of the projection extension of building, make building that new height be presented.
Further optimization, described " projection of building is drawn on two-dimensional map by two-dimensional graphicses technology, and to building
Projection process makes building that height be presented " specifically include:
The first projection of building is drawn on two-dimensional map using two-dimensional graphicses technology, and is painted in the first projection of building
System builds profile according to the second of the scale smaller set according to building height, is presented according to the ratio of the first projection and the second projection
The height of building.
Further optimization, it is described " when get build new altitude information and change after, change building in two-dimensional map
Upper height parameter, new height is presented in processing to the projection to building again " include:
New altitude information is built when getting, does not change the first projection of building, is pressed again according to new building height
Ratio draws the projection of building second and forms new building.
Inventor provides another technical scheme again:A kind of device that building height is shown based on two-dimensional map, including:
Drawing unit:For the projection of building to be drawn on two-dimensional map by two-dimensional graphicses technology, and to the throwing of building
Shadow processing makes building that height be presented.
Change unit:For when getting the new altitude information of building, changing height parameter of the building on two-dimensional map,
Again new height is presented in processing for projection to building.
Further optimization, the drawing unit are specifically used for drawing building on two-dimensional map using two-dimensional graphicses technology
Projection, according to the angle of setting, the projection of building is carried out to extension in proportion and forms drafting building, by the extension for building projection
Make building that height be presented.
Further optimization, the modification unit are specifically used for after getting the new altitude information of building and changing, changing
Become the height parameter built and built on two-dimensional map, change the length of the projection extension of building, building is presented newly
Highly.
Further optimization, the drawing unit are specifically used for drawing building on two-dimensional map using two-dimensional graphicses technology
First projection, and draw in the first projection of building and taken turns according to the second building of the scale smaller set according to building height
Exterior feature, the height of building is presented according to the ratio of the first projection and the second projection.
Further optimization, the modification unit, which is specifically used for working as getting, builds new altitude information, does not change building
First projection, new building is formed according to the new building height projection of building second drawn to scale again.
Prior art is different from, above-mentioned technical proposal by using two-dimensional graphicses technology by based on two-dimensional map, existing
When the building of display height is drawn out on map, and needing to change the height of building, it is only necessary to change the ginseng of building height building
Number, detailed information is obtained without carrying out exploration to building, gathered data is simple, and is based on two-dimensional map, relative to three
Map is tieed up, the calculating without complexity, it is possible to reach the effect on three maps on two-dimensional map, mitigate the calculating of system
Amount.
Brief description of the drawings
Fig. 1 is a kind of schematic flow sheet for the method for showing building height described in embodiment one based on two-dimensional map;
Fig. 2 is a kind of schematic flow sheet for the method for showing building height described in embodiment two based on two-dimensional map;
Fig. 3 is a kind of a kind of structural representation of the high two-dimensional map in display building of embodiment two;
Fig. 4 is a kind of schematic flow sheet for the method for showing building height described in embodiment three based on two-dimensional map;
Fig. 5 is a kind of a kind of structural representation of the high two-dimensional map in display building of embodiment three;
Fig. 6 is a kind of schematic flow sheet for the device for showing building height described in example IV based on two-dimensional map.
Embodiment
To describe the technology contents of technical scheme, construction feature, the objects and the effects in detail, below in conjunction with specific reality
Apply example and coordinate accompanying drawing to be explained in detail.
Embodiment one
Referring to Fig. 1, a kind of method that building height is shown based on two-dimensional map of the present embodiment, is comprised the following steps:
Step S110:Draw the projection of building on two-dimensional map by two-dimensional graphicses technology, and to the projection of building at
Reason makes building that height be presented;It is each without needing collection in detail to build by three-dimensional draughtsmanship using the technology of two-dimensional graphicses
Individual information, and carry out map making by complicated calculating so that the building on map can embody height.In two-dimensional graphicses
In, as long as carrying out drawing the projection of building in the plane of two-dimensional map, carrying out processing by the projection to building can
The building with height is showed, for the technology relative dimensional draughtsmanship of two-dimensional graphicses, is adopted without detailed information
Collection, without the support of 3D engines, the calculating without complexity, it is possible to obtain showing the height of building on two-dimensional map.
Step S120:New altitude information is built when getting, changes height parameter of the building on two-dimensional map, to building
Again new height is presented in processing for the projection built;In a practical situation, the height usually built becomes such as needs
It is dynamic, if desired for the situation of capping, building it is highly desirable.In three-dimensional is charted, when building changes, it is necessary to go to adopt again
Architecture information after collection change, re-starts according to the architecture information after change and draws new building, and during this, information is adopted
The trouble of collection and complicated calculating.And pass through two dimensional drafting technology, it is only necessary to change the height parameter of building, again to building
Projection is handled, without the calculating by complexity, it is possible to which realization is redrawn to building, mitigates the amount of calculation of system.
Embodiment two
Refer to Fig. 2 and Fig. 3, a kind of method that building height is shown based on two-dimensional map of the present embodiment, including following step
Suddenly:
Step S210:The projection 320 of building 320 is drawn on two-dimensional map using two-dimensional graphicses technology, according to setting
Angle, the projection 320 for building 320 is carried out into extension in proportion formed to draw building 320, prolonged by the projection 320 of building 320
Stretching makes building 320 that height be presented.By the technology of two dimensional drafting, the projection 320 of building 320, root are drawn out on two-dimensional map
According to the building height collected, the projection 320 for building 320 is proportionally carried out extending to necessarily toward an angle set
Length, build 320 projection 320 can during extension and form a building 320, without collection building 320 in detail
Information, map making is carried out without using 3D picture technology, without drawing building 320 by the calculating of complexity, so that it may
To be apparent in the building 320 that display height is drawn out on two-dimensional map.Two-dimensional graphicses technology is that algorithm life is write at GIS service end
Building profile and building height are produced, then work client call is issued by the form of service.
Step S220:When get build new altitude information and change after, change the building on two-dimensional map
The height parameter of building 320, change the length that the projection 320 of building 320 extends, make building 320 that new height be presented.In reality
In situation, usually build 320 height and changed such as needs, if desired for the situation of capping, build 320 height
Need.In three-dimensional is charted, when building 320 and changing, it is necessary to go to gather the information of building 320 after changing again, according to
The information of building 320 after change, which re-starts, draws new building 320, and during this, trouble and the complexity of information gathering
Calculate.And pass through two-dimensional graphicses technology, it is only necessary to according to the data variation of 320 height of building, i.e., only need new building 320 high
Degrees of data, change the development length of the projection 320 of original building 320, it is possible to realize the height of building 320 in two-dimensional map
Change, without the calculating by complexity, it is possible to realize redrawing to building 320, mitigate the amount of calculation of system.By inputting building
It is high layer by layer, change the floor height parameter accordingly built in GIS service end, the floor height of building can be changed in real time on map, passed through
Building floor height is shown in the figure layer of electronic map, changed in the past the only vision of building profile, strengthens the third dimension of floor.
And in present 3D maps, when the view transformation of viewing, whole map all with the variation at visual angle and
Change, it is necessary to be supported by 3D engine techniques, and the calculating of complexity is needed during this.And in the present embodiment, work as two dimension
In map, when the visual angle of viewing converts, do not change the aspect of overall map, only change the angle excursion of building 320, make
When the visual angle that must be watched in time changes, the direction of building 320 on two-dimensional map can also be made also to change.
Embodiment three
Refer to Fig. 4 and Fig. 5, a kind of method that building height is shown based on two-dimensional map of the present embodiment, including following step
Suddenly:
Step S410:The first projection 510 of building is drawn on two-dimensional map using two-dimensional graphicses technology, and in building
Drawn in first projection 510 and build profile according to the second of the scale smaller set according to building height, according to the first projection 510
The height of building is presented with the ratio of the second projection 520.By the technology of two-dimensional graphicses, draw out and build in the plane of two-dimensional map
The first projection 510 built, according to the building height collected, the second projection is drawn on the basis of the first projection 510 of building
520, and the drafting for the second projection 520 built is proportionally to be reduced to be drawn according to the first projection 510, wherein reduce
Ratio is configured according to the building height of collection.Such as building height is 100 meters, then the second projection 520 is thrown according to first
50% ratio of shadow 510 is reduced;Building height is 200 meters, then the second projection 520 is compared according to the 25% of the first projection 510
Example is reduced;Building height is 300 meters, then the second projection 520 is reduced according to 12.5% ratio of the first projection 510.
Without gather the information of building in detail, map making is carried out without using 3D picture technology, without the calculating by complexity come
Draw building, it is possible to be apparent in the building that display height is drawn out on two-dimensional map.
Step S420:New altitude information is built when getting, does not change the first projection 510 of building, again according to new
The building height projection of building second 520 drawn to scale form new building.In a practical situation, the height usually built can
Can be changed with needs, if desired for the situation of capping, building it is highly desirable.In three-dimensional is charted, when building occurs
, it is necessary to remove the architecture information after collection change again during change, re-started according to the architecture information after change and draw new build
Build, and during this, the trouble of information gathering and complicated calculating.And pass through two-dimensional graphicses technology, it is only necessary to high according to building
The change of degrees of data, i.e., new building height data are only needed, the second projection 520 to building is modified, by the second projection
520 modify according to new ratio, and new ratio is according to obtained from new building height data, it is possible to realize two dimension
The height change built in map, without the calculating by complexity, it is possible to which realization is redrawn to building, mitigates the calculating of system
Amount.
Example IV
Referring to Fig. 6, a kind of device 600 that building height is shown based on two-dimensional map of the present embodiment, including:
Drawing unit 610:For the projection of building to be drawn on two-dimensional map by two-dimensional graphicses technology, and to building
Projection process makes building that height be presented;Drawing unit 610 utilizes the technology of two-dimensional graphicses, without being needed by three-dimensional draughtsmanship
Each information of collection building, and carry out map making by complicated calculating in detail so that the building on map can embody
Highly.In two-dimensional graphicses, as long as carrying out drawing the projection of building in the plane of two-dimensional map, entered by the projection to building
Row processing can show the building with height, for the technology relative dimensional draughtsmanship of two-dimensional graphicses, nothing
Detailed information gathering is needed, without the support of 3D engines, the calculating without complexity, it is possible to obtain showing on two-dimensional map and build
The height built.
Change unit 620:For when getting the new altitude information of building, changing height ginseng of the building on two-dimensional map
Number, new height is presented in processing to the projection to building again.In a practical situation, the height usually built such as needs and
Change, if desired for the situation of capping, building it is highly desirable.In three-dimensional is charted, when building changes, it is necessary to weight
The new architecture information gone after collection change, re-starts according to the architecture information after change and draws new building, and during this,
The trouble of information gathering and complicated calculating.And change unit 620 and pass through two dimensional drafting technology, it is only necessary to change the height of building
Parameter, the again projection to building are handled, without the calculating by complexity, it is possible to which realization is redrawn to building, is mitigated
The amount of calculation of system.
Specifically, drawing unit 610 draws the projection of building using two-dimensional graphicses technology on two-dimensional map, according to setting
Angle, the projection of building carried out to extension in proportion formed to draw building, it is high that building is presented in the extension by building projection
Degree.Drawing unit 610 is drawn out the projection of building on two-dimensional map, built according to what is collected by the technology of two dimensional drafting
Height is built, the projection of building is proportionally carried out extending to certain length toward an angle set, building is projected in
Can forms a building during extension, without the information of collection building in detail, enters without using 3D picture technology
Row map making, building is drawn without the calculating by complexity, it is possible to be apparent on two-dimensional map and draw out display height
Building.
After modification unit 620 detects that the data of building height change, change building profile on two-dimensional map
Development length form new building.In a practical situation, the height usually built changes such as needs, such as needs
Situation about being capped, building it is highly desirable.In three-dimensional is charted, when building changes, it is necessary to go collection to change again
Architecture information afterwards, re-started according to the architecture information after change and draw new building, and during this, the fiber crops of information gathering
Tired and complicated calculating.And change unit 620 and pass through two-dimensional graphicses technology, it is only necessary to according to the data variation of building height, i.e.,
New building height data are only needed, change the development length of the projection of original building, it is possible to realize in two-dimensional map and build
The height change built, without the calculating by complexity, it is possible to which realization is redrawn to building, mitigates the amount of calculation of system.
And in present 3D maps, when the view transformation of viewing, whole map all with the variation at visual angle and
Change, it is necessary to be supported by 3D engine techniques, and the calculating of complexity is needed during this.And in the present embodiment, work as two dimension
In map, when the visual angle of viewing converts, do not change the aspect of overall map, only change the angle excursion of building so that
When the visual angle watched in time changes, the direction that can also make to build on two-dimensional map also changes.
Or drawing unit 610 draws the first projection of building using two-dimensional graphicses technology on two-dimensional map, and building
Build first projection in draw according to the scale smaller set according to building height second build profile, according to first projection and
The height of building is presented in the ratio of second projection.Drawing unit 610 is painted by the technology of two-dimensional graphicses in the plane of two-dimensional map
The first projection of building is made, according to the building height collected, the second projection is drawn on the basis of the first projection of building,
And the drafting for the second projection built is proportionally to be reduced to be drawn according to the first projection, wherein reduced scale is basis
The building height of collection is configured.Such as building height is 100 meters, then the second projection is entered according to 50% ratio of the first projection
Row reduces;Building height is 200 meters, then the second projection is reduced according to 25% ratio of the first projection;Building height is 300
Rice, then the second projection are reduced according to 12.5% ratio of the first projection.Without gathering the information of building in detail, without using
3D picture technology carries out map making, draws building without the calculating by complexity, it is possible to be apparent on two-dimensional map
Draw out the building of display height.
New altitude information is built when modification unit 620 is got, does not change the first projection of building, again according to new
The building height projection of building second drawn to scale forms new building.In a practical situation, the height usually built may be with
Needs and change, if desired for the situation of capping, building it is highly desirable.In three-dimensional is charted, when building changes
When, it is necessary to go again collection change after architecture information, re-started according to the architecture information after change and draw new building, and
During this, the trouble of information gathering and complicated calculating.And change unit 620 and pass through two-dimensional graphicses technology, it is only necessary to according to
The change of building height data, i.e., new building height data are only needed, the second projection to building is modified, and second is thrown
Shadow is modified according to new ratio, and new ratio is according to obtained from new building height data, it is possible to realizes two dimension
The height change built in map, without the calculating by complexity, it is possible to which realization is redrawn to building, mitigates the calculating of system
Amount.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply and deposited between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability includes, so that process, method, article or terminal device including a series of elements not only include those
Key element, but also the other element including being not expressly set out, or it is this process, method, article or end also to include
The intrinsic key element of end equipment.In the absence of more restrictions, limited by sentence " including ... " or " including ... "
Key element, it is not excluded that other key element in the process including the key element, method, article or terminal device also be present.This
Outside, herein, " being more than ", " being less than ", " exceeding " etc. are interpreted as not including this number;" more than ", " following ", " within " etc. understand
It is to include this number.
It should be understood by those skilled in the art that, the various embodiments described above can be provided as method, apparatus or computer program production
Product.These embodiments can use the embodiment in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Form.All or part of step in the method that the various embodiments described above are related to can by program come instruct the hardware of correlation come
Complete, described program can be stored in the storage medium that computer equipment can be read, for performing the various embodiments described above side
All or part of step described in method.The computer equipment, include but is not limited to:Personal computer, server, general-purpose computations
It is machine, special-purpose computer, the network equipment, embedded device, programmable device, intelligent mobile terminal, intelligent home device, wearable
Smart machine, vehicle intelligent equipment etc.;Described storage medium, include but is not limited to:RAM, ROM, magnetic disc, tape, CD, sudden strain of a muscle
Deposit, USB flash disk, mobile hard disk, storage card, memory stick, webserver storage, network cloud storage etc..
The various embodiments described above are with reference to method, equipment (system) and the computer program product according to embodiment
Flow chart and/or block diagram describe.It should be understood that can be by every in computer program instructions implementation process figure and/or block diagram
One flow and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computers can be provided
Programmed instruction is to the processor of computer equipment to produce a machine so that passes through the finger of the computing device of computer equipment
Order, which produces, to be used to realize what is specified in one flow of flow chart or multiple flows and/or one square frame of block diagram or multiple square frames
The device of function.
These computer program instructions may be alternatively stored in the computer that computer equipment can be guided to work in a specific way and set
In standby readable memory so that the instruction being stored in the computer equipment readable memory produces the manufacture for including command device
Product, the command device is realized to be referred in one flow of flow chart or multiple flows and/or one square frame of block diagram or multiple square frames
Fixed function.
These computer program instructions can be also loaded on computer equipment so that performed on a computing device a series of
Operating procedure is to produce computer implemented processing, so as to which the instruction performed on a computing device is provided for realizing in flow
The step of function of being specified in one flow of figure or multiple flows and/or one square frame of block diagram or multiple square frames.
Although the various embodiments described above are described, those skilled in the art once know basic wound
The property made concept, then other change and modification can be made to these embodiments, so embodiments of the invention are the foregoing is only,
Not thereby the scope of patent protection of the present invention, every equivalent structure made using description of the invention and accompanying drawing content are limited
Or equivalent flow conversion, or other related technical areas are directly or indirectly used in, similarly it is included in the patent of the present invention
Within protection domain.
Claims (10)
- A kind of 1. method that building height is shown based on two-dimensional map, it is characterised in that comprise the following steps:The projection of building is drawn on two-dimensional map by two-dimensional graphicses technology, and makes building that height be presented the projection process of building Degree;New altitude information is built when getting, changes height parameter of the building on two-dimensional map, the projection to building is again New height is presented in processing.
- 2. the method for building height is shown based on two-dimensional map according to claim 1, it is characterised in that described " to pass through two Dimension drawing technique draws the projection of building on two-dimensional map, and makes building that height be presented the projection process of building " specifically wrap Include:The projection of building is drawn on two-dimensional map using two-dimensional graphicses technology, according to the angle of setting, the projection of building is pressed Ratio carries out extension and forms drafting building, and the extension by building projection makes building present highly.
- 3. the method for building height is shown based on two-dimensional map according to claim 2, it is characterised in that described " to work as acquisition After the altitude information new to building changes, change building height parameter, projection to building on two-dimensional map and locate again New height is presented in reason " include:When get build new altitude information and change after, change the height ginseng built and built on two-dimensional map Number, change the length of the projection extension of building, make building that new height be presented.
- 4. the method for building height is shown based on two-dimensional map according to claim 1, it is characterised in that described " to pass through two Dimension drawing technique draws the projection of building on two-dimensional map, and makes building that height be presented the projection process of building " specifically wrap Include:The first projection of building is drawn on two-dimensional map using two-dimensional graphicses technology, and draws and presses in the first projection of building Profile is built according to the second of the scale smaller set according to building height, building is presented according to the ratio of the first projection and the second projection Height.
- 5. the method for building height is shown based on two-dimensional map according to claim 4, it is characterised in that described " to work as acquisition After the altitude information new to building changes, change building height parameter, projection to building on two-dimensional map and locate again New height is presented in reason " include:New altitude information is built when getting, does not change the first projection of building, again according to new building height in proportion Draw the projection of building second and form new building.
- A kind of 6. device that building height is shown based on two-dimensional map, it is characterised in that including:Drawing unit:For drawing the projection of building on two-dimensional map by two-dimensional graphicses technology, and to the projection of building at Reason makes building that height be presented;Change unit:For when getting the new altitude information of building, changing height parameter of the building on two-dimensional map, to building Again new height is presented in processing for the projection built.
- 7. building height is shown based on two-dimensional map according to claim 6, it is characterised in that the drawing unit is specifically used In the projection for drawing building on two-dimensional map using two-dimensional graphicses technology, according to the angle of setting, by the projection of building press than Example carries out extension and forms drafting building, and the extension by building projection makes building present highly.
- 8. the device of building height is shown based on two-dimensional map according to claim 7, it is characterised in that the modification unit Specifically for when get build new altitude information and change after, change the height built and built on two-dimensional map Parameter, change the length of the projection extension of building, make building that new height be presented.
- 9. building height device is shown based on two-dimensional map according to claim 6, it is characterised in that the drawing unit tool Body is used for the first projection for drawing building on two-dimensional map using two-dimensional graphicses technology, and is drawn in the first projection of building Second according to the scale smaller set according to building height builds profile, is presented and built according to the ratio of the first projection and the second projection The height built.
- 10. the device of building height is shown based on two-dimensional map according to claim 9, it is characterised in that the amendment Member is specifically used for the first projection for when getting the new altitude information of building, not changing building, again according to new building height The projection of building second drawn to scale forms new building.
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