CN103177650B - Simple digital map manufacturing method based on aerial photo - Google Patents
Simple digital map manufacturing method based on aerial photo Download PDFInfo
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- CN103177650B CN103177650B CN201310126650.6A CN201310126650A CN103177650B CN 103177650 B CN103177650 B CN 103177650B CN 201310126650 A CN201310126650 A CN 201310126650A CN 103177650 B CN103177650 B CN 103177650B
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Abstract
The invention discloses a simple digital map manufacturing method based on an aerial photo. The manufacturing method comprises the following steps of: building a coordinate system for the aerial photo of a local area; identifying the coordinate of each building in the photo; building a conversion method with actual longitude and latitude; building the relation between longitude and latitude of two points with a unit distance from each other; building a constraint condition between two points which are not more than m meters from each other by using such relation, wherein all points which enable the condition to be true are not more than m meters from a central point. The method is suitable for common users, professional knowledge or professional tools are not required, and the requirement on professional is low; the manufacturing process can be realized by a computer completely, and thus the manual work load is low and the manufacturing cost is low; and all objects but not only symbolic objects such as rivers and bridges in the actual scene can be displayed in detail. The method can be widely used in service systems based on position, and also can be combined with e-government affairs, to directly serve government management and decision analysis through identifying detailed information of objects.
Description
Technical field
The invention belongs to geographic information system technology field, the figure that relates to taking photo by plane is the numerical map method for making of object.
Background technology
Numerical map is by method for digitizing, and urban geographic information is stored with the discernible form of computing machine, and can present with the form of continuous map, is a urban geography database in essence.
Numerical map is that the life of people brings great convenience, and can provide abundant location Based service, and as searched various position, various place, searches traffic path.Numerical map combines with e-commerce system, and dynamic display chain store position, the distribution of dispensing destination, calculate shortest path, optimize distribution project, realize optimum management etc.Combine with GPS, can monitoring moving body and Vehicular behavior in real time, realize telemanagement.Combine with E-Government, the every field such as the energy, traffic, agricultural, soil, urban construction, tourism and military affairs can be widely used in, directly serve governability and decision analysis, for state's economic construction and social development provide support.
But the making of numerical map is very difficult, knowledge needs to be grasped spatial alternation type, geometric transformation algorithm, vector and raster calculate feature, the knowledge such as digital map data structure, Making programme need through eight steps: image geometry is corrected, digital map, the process of map datum topology, data are changed, map color matching process, add map label, GPS dominating pair of vertices map is used to verify, map is corrected again, software application needs relate to AutoCAD, MapInfo, ArcInfo, PhotoShop, ErDas Imagine etc.The use of so many knowledge points, Making programme and software makes the making of map not only professional very high, and cost is also very high.
Except having very high requirement to professional and cost of manufacture, a lot of needs of work that numerical map makes are manual to be completed, therefore workload is very huge, this numerical map causing current user to use is except river, outside the object that bridge etc. must mark, seldom relate to the mark of the atypia buildings such as residential building, thus make the open ended information of numerical map little.It is strongly professional that existing numerical map manufacturing technology exists, the defects such as cost of manufacture is high, and manual work amount is large.
Summary of the invention
The invention provides a kind of simple and easy numerical map method for making based on the figure that takes photo by plane, with reach can towards domestic consumer and computing machine easily realize, and all objects in the middle of outdoor scene can be shown in detail, and be not only river, the objects such as the significant object such as bridge.
In order to solve above technical matters, the present invention adopts following concrete technical scheme.
Step 1, for the figure that takes photo by plane in some areas sets up coordinate-system.
The figure that takes photo by plane all provides with rectangular in form, with the picture upper left corner for initial point, is east-westly
axle, south-north direction is
axle.If the size of picture is
, pixel size is
, in picture, the lateral coordinates of each point is set to this point and exists
on axle apart from initial point distance divided by
, then be multiplied by
, in picture, the longitudinal coordinate of each point is set to this point and exists
on axle apart from initial point distance divided by
, then be multiplied by
.Suppose that this point exists
distance apart from initial point on axle is
, then the lateral coordinates of this point is
, this point
distance apart from initial point on axle is
, then the lateral coordinates of this point is
.
Step 2, identifies the coordinate of each solitary building in publishing picture.
Stochastic choice point on buildings, using the coordinate of the coordinate of this point as this buildings.
Step 3, sets up conversion method with the longitude and latitude of reality.
Random selecting two buildingss, are designated as A and B.A is obtained, the coordinate of B, respectively in the coordinate-system set up for the figure that takes photo by plane
Be designated as
,
.Utilize the GPS positioning function of mobile device to obtain A respectively, the longitude and latitude of B, is designated as
,
.
Only there are zooming and panning, order in two cover coordinate-systems
represent
the scaling of axle,
represent the translation of horizontal ordinate, system of equations is set
and solve
,
as conversion parameter.Order
represent
the scaling of axle,
represent the translation of horizontal ordinate, system of equations is set
and solve
,
as conversion parameter.
Step 4, set up be separated by unit distance the longitude and latitude of 2 between relation.
In outdoor scene, Stochastic choice distance is no more than three points of 1000 meters, is designated as C, D, E, and the GPS positioning function utilizing mobile device to carry obtains the longitude and latitude of these points respectively, is designated as
,
,
.
Calculate the ratio between the difference of longitude and latitude between C and D and distance:
, here
represent the distance between C and D, unit is rice.
Calculate the ratio between the difference of longitude and latitude between C and E and distance:
, here
represent the distance between C and E, unit is rice.
Calculate the ratio between the difference of longitude and latitude between D and E and distance:
, here
represent the distance between D and E, unit is rice.
Pass between the longitude and latitude of 2 of unit distance of being separated by is:
.
Step 5, location, searches out around
all buildings in rice scope
The longitude and latitude being located at the GPS positioning function acquisition that current location utilizes mobile device to carry is
, in the coordinate-system built for the figure that takes photo by plane, for the coordinate of arbitrary buildings
if,
, then this buildings distance current location is identified not enough
rice.
beneficial effect: 1) numerical map manufacturing technology of the present invention is towards domestic consumer, without the need to grasping professional knowledge and specific purpose tool, very low to professional requirement; 2) manufacturing process can realize by computing machine completely, and manual work amount is low, and cost of manufacture is low; 3) all objects in the middle of outdoor scene can be shown in detail, and be not only river, the significant object such as bridge.
Embodiment
Below in conjunction with embodiment, technical scheme of the present invention is described in further details.
The figure that takes photo by plane in Yangzhong City of existing Jiangsu Province 2011 end of the year.
1) for Yangzhong City figure that takes photo by plane sets up coordinate-system.
With the figure upper left corner of taking photo by plane in Yangzhong City of Jiangsu Province 2011 end of the year for initial point, be east-westly
axle, south-north direction is
axle.The size of picture
, in picture, the lateral coordinates of each point is set to this point and exists
on axle apart from the distance of initial point divided by 4741500 centimetres the width of figure (whole Yangzhong City take photo by plane), then be multiplied by 11259, in picture, the longitudinal coordinate of each point is set to this point and exists
on axle apart from the distance of initial point divided by 6088400 centimetres, namely whole Yangzhong City takes photo by plane the length of figure, then is multiplied by 14534.
2) mark publish picture in the coordinate of each solitary building.
The figure that takes photo by plane of construction community, thatch street of existing Yangzhong City three, mark two solitary building A and B in the figure that takes photo by plane of construction community, thatch street, Yangzhong City three, its coordinate is (5012.50 ,-4084.25) respectively, (5006.50 ,-4117.75).
3) conversion method is set up with actual longitude and latitude.
The building A marked in the figure that takes photo by plane for construction community, thatch street, Yangzhong City three and B, the GPS positioning function utilizing mobile device to carry obtains A respectively, the longitude and latitude of B, (119.81486798 respectively, 32.23674003), (119.81470613,32.23598230).
Set up system of equations
, solve
the scaling of axle
, horizontal ordinate translation parameters
.
Set up system of equations
, solve
the scaling of axle
, ordinate translation parameters
.
Step 4, set up be separated by unit distance the longitude and latitude of 2 between relation.
Stochastic choice three points in outdoor scene, be designated as C, D, E, the GPS positioning function utilizing mobile device to carry obtains the longitude and latitude of these points respectively, (119.84486513 respectively, 32.21314854), (119.85382112,32.21473186), (119.85463039,32.20812715).
Calculate the ratio between the difference of longitude and latitude between C and D and distance:
.
Calculate the ratio between the difference of longitude and latitude between C and E and distance:
.
Calculate the ratio between the difference of longitude and latitude between D and E and distance:
.
Pass between the longitude and latitude of 2 of unit distance of being separated by is:
.
Step 5, location, searches out around
all buildings in rice scope
Be located at the longitude and latitude that current location utilizes the GPS positioning function of mobile phone to obtain
, in the coordinate-system built for the figure that takes photo by plane, for the coordinate of arbitrary buildings
if,
, then this buildings distance current location is identified not enough
rice.
Claims (3)
1., based on the simple and easy numerical map method for making of the figure that takes photo by plane, it is characterized in that comprising the following steps:
Step one, for the figure that takes photo by plane in some areas sets up coordinate-system;
Step 2, identifies the coordinate of each solitary building in publishing picture;
Step 3, sets up conversion method with the longitude and latitude of reality;
Step 4, set up be separated by unit distance the longitude and latitude of 2 between relation;
Step 5, location, searches out all buildings within the scope of around m rice;
Described step one is specially further:
1. with the figure upper left corner of taking photo by plane for initial point, east-west is x-axis, and south-north direction is y-axis;
2. set the size of picture as a cm x b centimetre, pixel size is c pixel × d pixel, in picture, the lateral coordinates of each point is set to the distance of this distance initial point in x-axis divided by a, be multiplied by c again, in picture, the longitudinal coordinate of each point is set to the distance of this distance initial point in y-axis divided by b, then is multiplied by (-d); Suppose this in x-axis apart from the distance of initial point be e
x, then the lateral coordinates of this point is
the distance of this distance initial point in y-axis is e
y, then the lateral coordinates of this point is
2., as claimed in claim 1 based on the simple and easy numerical map method for making of the figure that takes photo by plane, it is characterized in that described step 3 is specially further:
1. random selecting two buildingss, are designated as A and B.A is obtained, B in the coordinate-system set up for the figure that takes photo by plane
Coordinate, be designated as (x respectively
a, y
a), (x
b, y
b); The GPS positioning function utilizing mobile device to carry obtains A respectively, and the longitude and latitude of B, is designated as (x
a, y
a), (x
b, y
b);
2. k is made
xrepresent the scaling of x-axis, b
xrepresent the translation of horizontal ordinate, system of equations is set
And solve
As conversion parameter;
3. k is made
yrepresent the scaling of y-axis, b
yrepresent the translation of horizontal ordinate, system of equations is set
And solve
As conversion parameter.
3., as claimed in claim 1 based on the simple and easy numerical map method for making of the figure that takes photo by plane, it is characterized in that described step 4 is specially further:
1. Stochastic choice three points in outdoor scene, be designated as C, D, E respectively, the GPS positioning function utilizing mobile device to carry obtains the longitude and latitude of described point respectively, is designated as (x respectively
c, y
c), (x
d, y
d), (x
e, y
e);
2. the ratio between the difference of longitude and latitude between C and D and distance is calculated:
described dist (C, D) represents the distance between C and D, and unit is rice;
3. the ratio between the difference of longitude and latitude between C and E and distance is calculated:
described dist (C, E) represents the distance between C and E, and unit is rice;
4. the ratio between the difference of longitude and latitude between D and E and distance is calculated:
described dist (D, E) represents the distance between D and E, and unit is rice;
Pass between the longitude and latitude of 2 of unit distance of being 5. separated by is:
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CN103533078B (en) * | 2013-10-24 | 2017-07-21 | 无锡赛思汇智科技有限公司 | A kind of method and system for generating map |
CN104182512A (en) * | 2014-08-20 | 2014-12-03 | 中国电建集团成都勘测设计研究院有限公司 | Transformation and verification methods of GPS (global positioning system) coordinates and local coordinates |
CN106294329B (en) * | 2015-05-08 | 2019-12-06 | 北京智谷睿拓技术服务有限公司 | Information processing method and apparatus |
CN107169132B (en) * | 2017-06-09 | 2020-03-20 | 中国神华能源股份有限公司 | Method, storage device, storage medium and device for drawing mine map |
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JP2001344328A (en) * | 2000-05-31 | 2001-12-14 | Misawa Homes Co Ltd | Device for management of information on real estate property, management system of information on the property, method for management of information on the property and storage medium |
CN1375987A (en) * | 2002-02-20 | 2002-10-23 | 阮伟 | Digital image correcting method |
CN100514332C (en) * | 2006-06-01 | 2009-07-15 | 上海杰图软件技术有限公司 | Method for annotating electronic map through photograph collection having position information |
CN101567150A (en) * | 2008-04-25 | 2009-10-28 | 杨艺林 | Method for accurately positioning digital map |
KR100904078B1 (en) * | 2008-12-30 | 2009-06-23 | (주)대한지적기술단 | A system and a method for generating 3-dimensional spatial information using aerial photographs of image matching |
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