CN104346771A - Electronic map layering management method - Google Patents

Electronic map layering management method Download PDF

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Publication number
CN104346771A
CN104346771A CN201410534705.1A CN201410534705A CN104346771A CN 104346771 A CN104346771 A CN 104346771A CN 201410534705 A CN201410534705 A CN 201410534705A CN 104346771 A CN104346771 A CN 104346771A
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Prior art keywords
picture
map
map picture
ground coordinate
layer
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CN201410534705.1A
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CN104346771B (en
Inventor
衡思坤
张自伟
周光宇
王清华
杨甫
朱立位
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SHANGHAI SUNRISE POWER CONTROL SYSTEM CO Ltd
State Grid Corp of China SGCC
State Grid Jiangsu Electric Power Co Ltd
Lianyungang Power Supply Co of Jiangsu Electric Power Co
Original Assignee
SHANGHAI SUNRISE POWER CONTROL SYSTEM CO Ltd
State Grid Corp of China SGCC
State Grid Jiangsu Electric Power Co Ltd
Lianyungang Power Supply Co of Jiangsu Electric Power Co
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Application filed by SHANGHAI SUNRISE POWER CONTROL SYSTEM CO Ltd, State Grid Corp of China SGCC, State Grid Jiangsu Electric Power Co Ltd, Lianyungang Power Supply Co of Jiangsu Electric Power Co filed Critical SHANGHAI SUNRISE POWER CONTROL SYSTEM CO Ltd
Priority to CN201410534705.1A priority Critical patent/CN104346771B/en
Priority to PCT/CN2014/093331 priority patent/WO2016054859A1/en
Publication of CN104346771A publication Critical patent/CN104346771A/en
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T3/00—Geometric image transformations in the plane of the image
    • G06T3/40—Scaling of whole images or parts thereof, e.g. expanding or contracting
    • G06T3/4038—Image mosaicing, e.g. composing plane images from plane sub-images
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T3/00—Geometric image transformations in the plane of the image
    • G06T3/40—Scaling of whole images or parts thereof, e.g. expanding or contracting
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T3/00—Geometric image transformations in the plane of the image
    • G06T3/20—Linear translation of whole images or parts thereof, e.g. panning

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Instructional Devices (AREA)
  • Processing Or Creating Images (AREA)

Abstract

The invention discloses an electronic map layering management method. The method comprises the steps of firstly establishing an electronic map layering model; determining the plane transposition relationship between basic layer map pictures and ground and the offset and proportional relation between frames; when the frames are scaled and translated, respectively finding and displaying the pictures of a new map. By adopting a fuzzy layering management algorithm, parts of the map can be conveniently modified and replaced without special maintenance management tools; the method is suitable for applications of small electronic maps; when some map layer only has local frames to display the contents, the local frames are stored without storing the whole frame; the map creating and maintaining workload is greatly reduced.

Description

A kind of electronic chart tiered management approach
Technical field
The present invention relates to a kind of electronic chart, particularly a kind of electronic chart tiered management approach.
Background technology
Electronic chart is applied in a lot of management system, draws applying electronic map, can with some vector plotting software during drawing, and during Layering manifestation, every layer has different details.
But the nonopen data memory format that some mapping softwares have oneself exclusive, and do not provide resolver, the graphic file of the non-vectored can preserving other general formats is provided only.Commercial mapping software is when depositing figure, due to can not set and display ratio, automatically can not divide block to carry out depositing figure, need to carry out depositing figure by hand, the scope of every width figure and ratio are difficult to accurately control, and the splicing difficulty and the workload that want to realize when amplifying full figure are very large, usually need the special drawing tool software of exploitation and maintenance management software, and the development amount of this type of instrument and maintenance software is also often greater than use software, considerably increase construction cycle and cost.
When certain layer only has the content of partial picture needs display, need to preserve complete picture, the workload of map building and maintenance is very large.
Summary of the invention
The object of the present invention is to provide a kind of part amendment being convenient to map and the electronic chart tiered management approach changed.
The technical scheme realizing the object of the invention is: a kind of electronic chart tiered management approach, comprises the following steps:
Step 1, set up electronic chart Layering manifestation model:
Step 1-1, the N number of layer of the content setting shown as required, N is natural number;
Step 1-2, set basic layer, the displaying ratio setting basic layer is L1, preserve basic layer map picture, the ground coordinate of record map picture angle point, the ground coordinate of one-dimensional plane map record upper left angle point and upper right angle point, the ground coordinate in the imitative three-dimensional 2D map record upper left corner, the upper right corner and the lower left corner;
Step 1-3, set the magnification ratio of other layer relative to basic layer; Setting fuzzy proportional coefficient f, wherein 0 < f < 1;
The map picture of step 1-4, drafting and other layer of intercepting, the observation visual angle of map picture is identical with basic layer map picture, if the magnification ratio of layer is Ln, in map picture, the displaying ratio L of map meets Ln*f < L < Ln/f; Preserve the map picture of other layer, the ground coordinate of record upper left angle point and upper right angle point;
Wherein, picture refers to display screen, and map picture refers to the map sectional drawing preserved according to given format;
Step 2, the upper left corner according to basic layer map picture, the upper right corner and the location of pixels in the lower left corner and the corresponding relation of corresponding ground coordinate point position determine the plane conversion relation of basic layer map picture and ground coordinate;
The skew of the corresponding relation determination picture of the coordinate points position on step 3, according to the map the picture upper left corner and upper right corner location of pixels and corresponding ground and magnification ratio;
If step 4 carries out map convergent-divergent in picture, perform step 5; If carry out map translation in picture, perform step 6;
In step 5, picture during map convergent-divergent, new map picture search and display comprises the following steps:
Step 5 ?1, determine the map that shows in the current picture zoom in/out ratio relative to basic layer picture map;
Step 5 ?2, in all map pictures, find magnification ratio be less than picture displaying ratio and comprise all map pictures of the coordinate of current mouse point place map;
Step 5 ?3, from step 5 ?determine the maximum value lmax of magnification ratio, the minimal value lmin=lmax*f of magnification ratio 2 map pictures obtained 2, search all map pictures that current picture displaying ratio l meets lmin < l < lmax;
The ground coordinate of the central point of the map picture that step 5 ?4, calculation procedure 5 ?3 obtain, compares the map picture that the coordinate of finding center point ground coordinate distance current picture mouse point place map is nearest;
Step 5-5, by above step, determine whether to find new map picture, if do not find new map picture, show former map picture;
If find new map picture, then recall new map picture, the displaying ratio of the new map picture of convergent-divergent is to current picture displaying ratio, the window display position of moving map picture, the ground coordinate of mouse point in this map picture is overlapped with the ground coordinate in former map picture, shows new map picture;
In step 6, picture during map translation, new map picture search and display comprises the following steps:
Step 6 ?1, judge ground coordinate position corresponding to window center point whether in current map picture, if map picture edge has shifted out central point, in the map picture of same layer, again found suitable new map picture by step 5;
Step 6 ?2, to find in same layer map picture, if can not find new map picture in same layer map picture, continue to find in lower one deck map picture, circulate successively, until find new map picture, show new map picture;
When being circulated to basic layer, determine that base map picture is new map picture; Recall new map picture, according to current displaying ratio and region, adjust the displaying ratio of new map picture and offset, ensure that the ground coordinate of mouse point position is constant, show new map picture.
Compared with prior art, its remarkable advantage is in the present invention: (1) the present invention adopts fuzzy layered management algorithm, is convenient to the part amendment of map and changes, not needing special maintenance management instrument, be applicable to the application of Small-size electronic map; (2) the present invention only needs to preserve partial picture, does not need to preserve complete picture, greatly reduces map building and maintenance workload; (3) drawing instrument of multiple commercial drawing instrument application software the most can be used, raise the efficiency, Speeding up development progress.
Below in conjunction with accompanying drawing, the present invention will be further described.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of electronic chart tiered management approach of the present invention.
Embodiment
Composition graphs 1, a kind of electronic chart tiered management approach, comprises the following steps:
Step 1, set up electronic chart Layering manifestation model:
Step 1-1, the N number of layer of the content setting shown as required, N is natural number;
Step 1-2, set basic layer, the displaying ratio setting basic layer is L1, preserve basic layer map picture, the ground coordinate of record map picture angle point, the ground coordinate of one-dimensional plane map record upper left angle point and upper right angle point, the ground coordinate in the imitative three-dimensional 2D map record upper left corner, the upper right corner and the lower left corner;
Step 1-3, set the magnification ratio of other layer relative to basic layer; Setting fuzzy proportional coefficient f, wherein 0 < f < 1;
The map picture of step 1-4, drafting and other layer of intercepting, the observation visual angle of map picture is identical with basic layer map picture, if the magnification ratio of layer is Ln, in map picture, the displaying ratio L of map meets Ln*f < L < Ln/f; Preserve the map picture of other layer, the ground coordinate of record upper left angle point and upper right angle point;
Wherein, picture refers to display screen, and map picture refers to the map sectional drawing preserved according to given format;
Step 2, the upper left corner according to basic layer map picture, the upper right corner and the location of pixels in the lower left corner and the corresponding relation of corresponding ground coordinate point position determine the plane conversion relation of basic layer map picture and ground coordinate; The plane conversion of basic layer map picture and ground coordinate is closed and is:
If picture pixel coordinate is [x, y], ground coordinate is [X, Y], and perspective transformation function is F (see the glFrustum () of " OpenGL ", gluPerspective () and glOrtho ()), then:
[x,y]＝F([X,Y])
[X,Y]＝F T([x,y])
Wherein F tfor the inverse function of F.
The skew of the corresponding relation determination picture of the coordinate points position on step 3, according to the map the picture upper left corner and upper right corner location of pixels and corresponding ground and magnification ratio; The skew of picture and proportionate relationship are:
If the skew of picture is [bx, by], proportionate relationship is s, and the skew of picture and proportionate relationship are:
[x,y]＝F([X,Y])*s+[bx,by]；
[X,Y]＝F T([x,y])/s-[bx,by]；
If step 4 carries out map convergent-divergent in picture, perform step 5; If carry out map translation in picture, perform step 6;
In step 5, picture during map convergent-divergent, new map picture search and display comprises the following steps:
Step 5 ?1, determine the map that shows in the current picture zoom in/out ratio relative to basic layer picture map;
Step 5 ?2, in all map pictures, find magnification ratio be less than picture displaying ratio and comprise all map pictures of the coordinate of current mouse point place map;
Step 5 ?3, from step 5 ?determine the maximum value lmax of magnification ratio, the minimal value lmin=lmax*f of magnification ratio 2 map pictures obtained 2, search all map pictures that current picture displaying ratio l meets lmin < l < lmax;
The ground coordinate of the central point of the map picture that step 5 ?4, calculation procedure 5 ?3 obtain, compares the map picture that the coordinate of finding center point ground coordinate distance current picture mouse point place map is nearest;
Step 5-5, by above step, determine whether to find new map picture, if do not find new map picture, show former map picture;
If find new map picture, then recall new map picture, the displaying ratio of the new map picture of convergent-divergent is to current picture displaying ratio, the window display position of moving map picture, the ground coordinate of mouse point in this map picture is overlapped with the ground coordinate in former map picture, shows new map picture;
In step 6, picture during map translation, new map picture search and display comprises the following steps:
Step 6-1, judge ground coordinate position corresponding to window center point whether in current map picture, if map picture edge has shifted out central point, in the map picture of same layer, again find suitable new map picture by step 4; The preferred selection order of suitable new map picture is:
First, the map picture comprising current window central point is selected;
Secondly, the map picture comprising current mouse point is selected;
Finally, picture central point and the immediate map picture of window center point is selected;
Step 6 ?2, to find in same layer map picture, if can not find new map picture in same layer map picture, continue to find in lower one deck map picture, circulate successively, until find new map picture, show new map picture;
When being circulated to basic layer, determine that base map picture is new map picture; Recall new map picture, according to current displaying ratio and region, adjust the displaying ratio of new map picture and offset, ensure that the ground coordinate of mouse point position is constant, show new map picture.
In the present invention, fuzzy proportional coefficient, layer magnification ratio, displaying ratio set all as the case may be, and are all greater than 0.
The present invention adopts fuzzy layered management algorithm, is convenient to the part amendment of map and changes, not needing special maintenance management instrument, be applicable to the application of Small-size electronic map; Only have partial picture to have to certain layer simultaneously and need displaying contents, as long as preserve partial picture, do not need to preserve complete picture, greatly reduce map building and maintenance workload.

Claims (4)

1. an electronic chart tiered management approach, is characterized in that, comprises the following steps:
Step 1, set up electronic chart Layering manifestation model:
Step 1-1, the N number of layer of the content setting shown as required, N is natural number;
Step 1-2, set basic layer, the displaying ratio setting basic layer is L1, preserve basic layer map picture, the ground coordinate of record map picture angle point, the ground coordinate of one-dimensional plane map record upper left angle point and upper right angle point, the ground coordinate in the imitative three-dimensional 2D map record upper left corner, the upper right corner and the lower left corner;
Step 1-3, set the magnification ratio of other layer relative to basic layer; Setting fuzzy proportional coefficient f, wherein 0 < f < 1;
The map picture of step 1-4, drafting and other layer of intercepting, the observation visual angle of map picture is identical with basic layer map picture, if the magnification ratio of layer is Ln, in map picture, the displaying ratio L of map meets Ln*f < L < Ln/f; Preserve the map picture of other layer, the ground coordinate of record upper left angle point and upper right angle point;
Wherein, picture refers to display screen, and map picture refers to the map sectional drawing preserved according to given format;
Step 2, the upper left corner according to basic layer map picture, the upper right corner and the location of pixels in the lower left corner and the corresponding relation of corresponding ground coordinate point position determine the plane conversion relation of basic layer map picture and ground coordinate;
The skew of the corresponding relation determination picture of the coordinate points position on step 3, according to the map the picture upper left corner, upper right corner location of pixels and corresponding ground and magnification ratio;
If step 4 carries out map convergent-divergent in picture, perform step 5; If carry out map translation in picture, perform step 6;
In step 5, picture during map convergent-divergent, new map picture search and display comprises the following steps:
Step 5 ?1, determine the map that shows in the current picture zoom in/out ratio relative to basic layer picture map;
Step 5 ?2, in all map pictures, find magnification ratio be less than picture displaying ratio and comprise all map pictures of the coordinate of current mouse point place map;
Step 5 ?3, from step 5 ?determine the maximum value lmax of magnification ratio, the minimal value lmin=lmax*f of magnification ratio 2 map pictures obtained 2, search all map pictures that current picture displaying ratio l meets lmin < l < lmax;
The ground coordinate of the central point of the map picture that step 5 ?4, calculation procedure 5 ?3 obtain, compares the map picture that the coordinate of finding center point ground coordinate distance current picture mouse point place map is nearest;
Step 5-5, by above step, determine whether to find new map picture, if do not find new map picture, show former map picture;
If find new map picture, then recall new map picture, the displaying ratio of the new map picture of convergent-divergent is to current picture displaying ratio, the window display position of moving map picture, the ground coordinate of mouse point in this map picture is overlapped with the ground coordinate in former map picture, shows new map picture;
In step 6, picture during map translation, new map picture search and display comprises the following steps:
Step 6 ?1, judge ground coordinate position corresponding to window center point whether in current map picture, if map picture edge has shifted out central point, in the map picture of same layer, again found suitable new map picture by step 5;
Step 6 ?2, to find in same layer map picture, if can not find new map picture in same layer map picture, continue to find in lower one deck map picture, circulate successively, until find new map picture, show new map picture;
When being circulated to basic layer, determine that base map picture is new map picture; Recall new map picture, according to current displaying ratio and region, adjust the displaying ratio of new map picture and offset, ensure that the ground coordinate of mouse point position is constant, show new map picture.
2. electronic chart tiered management approach according to claim 1, is characterized in that, in step 2, the plane conversion of basic layer map picture and ground coordinate is closed and is:
If picture pixel coordinate is [x, y], ground coordinate is [X, Y], and perspective transformation function is F, then:
[x,y]＝F([X,Y])
[X,Y]＝F T([x,y])
Wherein F tfor the inverse function of F.
3. electronic chart tiered management approach according to claim 2, is characterized in that, in step 3, the skew of picture and proportionate relationship are:
If the skew of picture is [bx, by], proportionate relationship is s, and the skew of picture and proportionate relationship are:
[x,y]＝F([X,Y])*s+[bx,by]；
[X,Y]＝F T([x,y])/s-[bx,by]。
4. electronic chart tiered management approach according to claim 1, is characterized in that, the preferred selection order of new map picture suitable in step 6-1 is:
First, the map picture comprising current window central point is selected;
Secondly, the map picture comprising current mouse point is selected;
Finally, picture central point and the immediate map picture of window center point is selected.
CN201410534705.1A 2014-10-11 2014-10-11 A kind of electronic map tiered management approach Active CN104346771B (en)

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PCT/CN2014/093331 WO2016054859A1 (en) 2014-10-11 2014-12-09 Electronic map hierarchical management method

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CN109829090A (en) * 2018-11-30 2019-05-31 青岛禧泰房地产数据有限公司 A kind of data display method using more maps
CN110473273A (en) * 2019-07-24 2019-11-19 广州视源电子科技股份有限公司 Method for drafting, device, storage medium and the terminal of vector graphics

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CN103137009A (en) * 2011-11-30 2013-06-05 上海博泰悦臻电子设备制造有限公司 Display method and device for map and vehicle-mounted system
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106204448A (en) * 2016-07-04 2016-12-07 北京空间飞行器总体设计部 Spacecraft stratification supplies stepless zooming display packing and the display system of the big figure of distribution
CN106204448B (en) * 2016-07-04 2019-09-13 北京空间飞行器总体设计部 The stepless zooming display methods and display system of the big figure of spacecraft stratification power supply and distribution
CN109829090A (en) * 2018-11-30 2019-05-31 青岛禧泰房地产数据有限公司 A kind of data display method using more maps
CN110473273A (en) * 2019-07-24 2019-11-19 广州视源电子科技股份有限公司 Method for drafting, device, storage medium and the terminal of vector graphics

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