CN110019622A - A kind of real time mass map point polymerization and device - Google Patents
A kind of real time mass map point polymerization and device Download PDFInfo
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Abstract
The invention discloses a kind of real time mass map point polymerization and devices, first obtain the longitude and latitude visual range of current map and the level of zoom of map, then judge whether current map level of zoom is greater than the first threshold of setting；If it is greater than, the longitude and latitude visual range of current map is then divided into the visible range module of setting quantity, according to ready-portioned visible range module, it is searched in preset point database respectively, obtain the corresponding congruent point position data of each visible range module, according to the corresponding congruent point position data of each visible range module, polymerization point is shown in current map；Otherwise the point in the longitude and latitude visual range of current map is searched for directly in preset point database, it will be shown on current map and terminate process.Method and device of the invention when carrying out the point display of magnanimity, can still provide for quick point polymerization and show, and consume minimum EMS memory occupation, user experience is good.
Description
Technical field
The invention belongs to electronic map technique field more particularly to a kind of real time mass map point polymerizations and dress
It sets.
Background technique
Usually indicate the geographical location in a real space with a geometric point in electronic map, the geometric point
Do geographical point or point element, abbreviation point.It usually include thousands of a points on some region, if will own
Point directly display out, these points can override electronic map base map, allow user feel electronic map it is very mixed and disorderly.Cause
This, needs to aggregate into multiple common points into a representative polymerization point, then shows representative polymerization point
To user.
With security protection industry high speed development, the data volume of video camera point is more and more huger, and tens of thousands of hundreds of thousands even on
Million video camera point will be presented on map, and no point polymerization is can not to check at all, and equipment performance is also extremely difficult to
It is required that.
And current traditional point polymerization, it is essentially all that total data is loaded into memory, by various
Algorithm calculates point and polymerize situation, repaints map.The point of negligible amounts, this mode can be said to be feasible, but face ten thousand
Grade or more point, the efficiency refreshed again on map be it is low-down, especially on cell phone apparatus, seriously affect user
Experience.
There are also method it is polymerize according to the level of electronic map in the prior art, the longitude and latitude of point is sat
Mark carries out Hash calculation, divides group according to cryptographic Hash, is polymerize to the point in the same group to show.However
In this method, the cryptographic Hash of each point is calculated, it is computationally intensive.It is grouped according to the cryptographic Hash being calculated, also
Consider the level of electronic map, it is big to calculate data volume, and in the case of more than the point, the delay of reaction is long, user experience
It is bad.
Summary of the invention
The object of the present invention is to provide a kind of real time mass map point polymerization and devices, for solving the prior art
Point data are all subjected to Hash calculation, the delay of reaction is long, the bad problem of user experience.The present invention is answered in movement
With and desktop application carry out the point display of magnanimity when, can still provide for the polymerization of quick point and show, and consume minimum memory and account for
With user experience is good.
To achieve the goals above, technical solution of the present invention is as follows:
A kind of real time mass map point polymerization, the real time mass map point polymerization, comprising:
Obtain the longitude and latitude visual range of current map and the level of zoom of map；
Judge whether current map level of zoom is greater than the first threshold of setting, if yes then enter next step, otherwise
The point in the longitude and latitude visual range of current map is searched for directly in preset point database, it will be shown in current positions
On figure and terminate process；
The longitude and latitude visual range of current map is divided into the visible range module of setting quantity, according to ready-portioned visual
Domain module is searched in preset point database respectively, obtains the corresponding congruent point position data of each visible range module；
According to the corresponding congruent point position data of each visible range module, polymerization point is shown in current map.
Further, congruent point position data, including the corresponding point quantitative value of visible range module, and polymerization point
Coordinate position.
Further, described to be searched in preset point database, obtain the corresponding congruent point of each visible range module
Position data, comprising:
Point quantitative value of the latitude and longitude coordinates within the scope of the longitude and latitude of visible range module is added by database statement,
Obtain the corresponding point quantitative value of visible range module；
The longitude and latitude of point by database statement by latitude and longitude coordinates within the scope of the longitude and latitude of visible range module is sat
The average coordinates position that mark is calculated by average algorithm, the coordinate position as polymerization point.
Another kind implementation of the invention, the coordinate position of the polymerization point, for middle the heart channel of Hang-Shaoyin of corresponding visible range module
Latitude coordinate.
Further, described to be searched in preset point database respectively, it is corresponding poly- to obtain each visible range module
After the data of chalaza position, further includes:
If the corresponding point quantitative value of some visible range module is less than current zoom rank corresponding second threshold, directly
It connects and shows the corresponding all points of the visible range module.
The invention also provides a kind of real time mass map point polyplant, the real time mass map point polymerization dress
It sets, comprising:
Input module, for obtaining the longitude and latitude visual range of current map and the level of zoom of map；
Judgment module, for judging whether current map level of zoom is greater than the first threshold of setting；
Display processing module, when for being less than or equal to the first threshold of setting in current map level of zoom, directly pre-
If point database in search for the point in the longitude and latitude visual range of current map, it will be shown on current map and tie
Line journey；When current map level of zoom is greater than the first threshold of setting, the longitude and latitude visual range of current map is divided
It searches for, obtains in preset point database respectively according to ready-portioned visible range module to set the visible range module of quantity
The corresponding congruent point position data of each visible range module are taken, according to the corresponding congruent point position data of each visible range module, will be gathered
Chalaza position is shown in current map.
Further, congruent point position data, including the corresponding point quantitative value of visible range module, and polymerization point
Coordinate position.
The Display processing module is searched in preset point database, obtains the corresponding polymerization of each visible range module
Point data, perform the following operations:
Point quantitative value of the latitude and longitude coordinates within the scope of the longitude and latitude of visible range module is added by database statement,
Obtain the corresponding point quantitative value of visible range module；
The longitude and latitude of point by database statement by latitude and longitude coordinates within the scope of the longitude and latitude of visible range module is sat
The average coordinates position that mark is calculated by average algorithm, the coordinate position as polymerization point.
Another implementation of the invention, the coordinate position of the polymerization point, for the center of corresponding visible range module
Latitude and longitude coordinates.
Further, the Display processing module is searched in preset point database respectively, obtains each visible range
After the corresponding congruent point position data of module, also perform the following operations:
If the corresponding point quantitative value of some visible range module is less than current zoom rank corresponding second threshold, directly
It connects and shows the corresponding all points of the visible range module.
A kind of real time mass map point polymerization and device proposed by the present invention, client will not disposably load institute
Have point into memory, but by the longitude and latitude visible range range of current map in point database removal search, do not account for
With the memory of client.And the technical program only scans for, and calculation amount when carrying out point polymerization is also considerably less, can be very
Client is responded fastly, the user experience is improved.When solving the point polymerization by the carry out magnanimity of traditional approach, greatly
The problem of seriously affecting user experience in the equipment of amount consumption this limited resources of hardware resource, especially mobile terminal.At present
Aggregating algorithm, on mobile terminals, points up to ten thousand basically can not realize polymerization, and it is depleted and answer to even result in application resource
With collapse, and the present invention is suitable for the polymerization of magnanimity point.
Detailed description of the invention
Fig. 1 is a kind of real time mass map point polymerization flow chart of the present invention；
Fig. 2 is that visible range of embodiment of the present invention module divides schematic diagram.
Specific embodiment
Technical solution of the present invention is described in further details with reference to the accompanying drawings and examples, following embodiment is not constituted
Limitation of the invention.
As shown in Figure 1, a kind of real time mass map point polymerization of the embodiment of the present invention, comprising:
Step S1, the longitude and latitude visual range of current map and the level of zoom of map are obtained.
The present embodiment checks video camera point to be illustrated, for commonly in electricity with client in video monitoring system
Cuisines, supermarket, hotel or other points near sub- map inquiry are equally applicable.When user opens ground on the client
Figure, client here can be intelligent movable mobile phone, PAD or ordinary PC or other terminals etc., and map is on the client
When display, client is easy to obtain the longitude and latitude visual range of current map and the level of zoom of current map, current map
Level of zoom can be divided into 1 to 18 grade in common electronic map.
The present embodiment is preset with point database, including the point information of each video camera point, point packet
Include the information such as coordinate or model, the device name of point.
Step S2, judge whether current map level of zoom is greater than the first threshold of setting, if yes then enter in next step
Suddenly, the point in the longitude and latitude visual range of current map is otherwise searched for directly in preset point database, is shown
On current map and terminate process.
Current map level of zoom is less than or equal to the current map of the first threshold of setting by the present embodiment, it is believed that it is scaled
Rank is very low, and image is sufficiently large, can all show the point information on map.At this time directly in preset point database
The point in the longitude and latitude visual range of current map is searched for, it will be shown on current map and terminate process.
For example, setting first threshold is 4, then it, directly can according to the longitude and latitude of current map when level of zoom is less than or equal to 4
Depending on range, all video camera points are retrieved in preset point database, they are shown on current map.This
When, it is shown that the specifying information of video camera point, such as the information such as the coordinate or model of point, device name, description.First
Threshold value can be configured according to actual map situation, and minimum is configurable to 1.
Step S3, the longitude and latitude visual range of current map is divided into the visible range module of setting quantity, according to division
Good visible range module, searches in preset point database respectively, obtains the corresponding polymerization point of each visible range module
Data.
When current map level of zoom is greater than first threshold, it is greater than 4, then it is assumed that the comparison of current map scaling
Small, the actual area covered is bigger, and wherein video camera point bit quantity is relatively more, at this time needs to carry out point polymerization display.
As shown in Fig. 2, the longitude and latitude visual range of current map is divided into the visible range mould of setting quantity by the present embodiment
Block, such as 9 palace lattice.The region of the corresponding 9 visible range modules of the longitude and latitude visual range of current map at this time.
It for each visible range module, is searched in preset point database respectively, obtains each visible range module
Corresponding congruent point position data.Congruent point position data include the corresponding point quantitative value of visible range module, and polymerization point
Coordinate position.Congruent point position data can also only include the coordinate position of polymerization point, or can also include relevant description
Information, such as the place name in region etc..
It should be noted that the present embodiment when scanning for some visible range module, is incited somebody to action by database statement
Point digit of the latitude and longitude coordinates within the scope of the longitude and latitude of visible range module is added, and obtains corresponding bit quantity of visible range module
Value；The latitude and longitude coordinates of point by database statement by latitude and longitude coordinates within the scope of the longitude and latitude of visible range module are passed through
The average coordinates position that average algorithm is calculated, the coordinate position as polymerization point.
Such as it to first visible range module in Fig. 2, is searched in point database according to its longitude and latitude range, passes through number
Point digit of the latitude and longitude coordinates within the scope of the longitude and latitude of first visible range module is added according to library sentence, it is visual to obtain first
The corresponding point quantitative value of domain module；By database statement by latitude and longitude coordinates first visible range module longitude and latitude model
The latitude and longitude coordinates of point in enclosing pass through the average coordinates position that average algorithm is calculated, the coordinate bit as polymerization point
It sets.Average algorithm is to be averaging the latitude and longitude coordinates of point.
And so on, visible range modules all in 9 palace lattice are all searched for and are finished, each visible range module in 9 palace lattice is obtained
Corresponding congruent point position data, the corresponding data of each polymerization point, always move 9 datas.
It is easily understood that the technical program is not limited to the visible range mould that the longitude and latitude visual range of current map divides
The particular number of block is also not necessarily limited to how to be divided.It can be with as shown in Fig. 2, be evenly dividing, it can also be according to current map
Business location situation carries out the division of different size visible range module.
The present embodiment obtains the corresponding polymerization point of a certain visible range module directly in the database, by database statement
Data do not need to read the corresponding point of visible range module from database, then calculate, are not take up additional to handle
System resource, therefore be more suitable on the mobile terminal being widely used at present and shown.Certainly, by passing through visible range module
Point in latitude scope first searches out from point database, then counts the quantitative value of point and calculate average coordinates position
It sets and feasible.
Step S4, according to the corresponding congruent point position data of each visible range module, polymerization point is shown in current map
Show.
For any one visible range module, the result after being retrieved in point database only obtains a data,
That is the point within the scope of visible range module longitude and latitude is polymerized to a representative that is, by database search by congruent point position data
The polymerization point of property.
The coordinate position of the polymerization point, can be by average algorithm according to the corresponding video camera point of the visible range module
The latitude and longitude coordinates of each point in information obtain to do average computation；The center of the visible range module can also be directly selected
Latitude and longitude coordinates；Or arbitrarily select the coordinate of a point as polymerization from the corresponding video camera point of the visible range module
The coordinate position of point.The present embodiment preferably, by average algorithm is believed according to the corresponding video camera point of the visible range module
The latitude and longitude coordinates of each point in breath obtain to do average computation.
For example, each palace lattice obtain 9 congruent points after point polymerize when as shown in Fig. 2, being divided into 9 palace lattice
Position shows polymerization point on the current map of client.
Special situation, if the corresponding point quantitative value of some visible range module is less than current zoom rank corresponding the
When two threshold values, the corresponding all points of the visible range module can also be directly displayed, i.e., the point in the visible range module not into
Row position polymeric.
For example, the second visible range module in Fig. 2, by search, wherein point there are two only, and current map level of zoom
(such as 6) corresponding second threshold is 2, then it represents that allows to show 2 points in the second visible range module, at this point, without
Point polymerization, directly shows the two points on map.And if current map level of zoom (such as 10) is corresponding
Second threshold be 1 when, then still need to carry out point polymerization, the polymerization point after polymerization shown.It is easily understood that the
Two threshold values are not less than 1, i.e., when the corresponding point of visible range module only has 1, with regard to directly showing point on map.
The method of the present embodiment carries out above-mentioned operation in the server, point database, client is preset on server
End will not disposably load all points into memory, but by the longitude and latitude visible range range of current map in point data
Removal search in library, and point polymerization is carried out, it is not take up the memory of client.And the technical program only scans for, and carries out a little
The calculation amount when polymerization of position is also considerably less, can respond quickly to client, the user experience is improved.It needs to illustrate
It is that the method for the present embodiment can also carry out on the client, point database is preset in client, due to passing through database
Language searches only for out a data to each visible range module, and calculation amount is smaller, and existing mobile terminal etc. completely can be with
It is applicable in.
Accordingly with the above method, this specific embodiment part gives a kind of real time mass map point polymerization dress
It sets, which can apply in server, can also apply in client.The real time mass map point polyplant, comprising:
Input module, for obtaining the longitude and latitude visual range of current map and the level of zoom of map；
Judgment module, for judging whether current map level of zoom is greater than the first threshold of setting；
Display processing module, when for being less than or equal to the first threshold of setting in current map level of zoom, directly pre-
If point database in search for the point in the longitude and latitude visual range of current map, it will be shown on current map and tie
Line journey；When current map level of zoom is greater than the first threshold of setting, the longitude and latitude visual range of current map is divided
It searches for, obtains in preset point database respectively according to ready-portioned visible range module to set the visible range module of quantity
The corresponding congruent point position data of each visible range module are taken, according to the corresponding congruent point position data of each visible range module, will be gathered
Chalaza position is shown in current map.
It is easily understood that corresponding to the above method, the real time mass map point polyplant, also have as follows
Embodiment:
A kind of embodiment of the invention, congruent point position data, including the corresponding point quantitative value of visible range module, Yi Jiju
The coordinate position of chalaza position.
The present embodiment Display processing module is searched in preset point database, and it is corresponding to obtain each visible range module
Congruent point position data, perform the following operations:
Point quantitative value of the latitude and longitude coordinates within the scope of the longitude and latitude of visible range module is added by database statement,
Obtain the corresponding point quantitative value of visible range module；
The longitude and latitude of point by database statement by latitude and longitude coordinates within the scope of the longitude and latitude of visible range module is sat
The average coordinates position that mark is calculated by average algorithm, the coordinate position as polymerization point.
Another embodiment of the invention, the coordinate position of the polymerization point, for middle the heart channel of Hang-Shaoyin of corresponding visible range module
Latitude coordinate.
A kind of embodiment of the invention, the Display processing module are searched in preset point database respectively, are obtained
After the corresponding congruent point position data of each visible range module, also perform the following operations:
If the corresponding point quantitative value of some visible range module is less than current zoom rank corresponding second threshold, directly
It connects and shows the corresponding all points of the visible range module.
The above embodiments are merely illustrative of the technical solutions of the present invention rather than is limited, without departing substantially from essence of the invention
In the case where mind and its essence, those skilled in the art make various corresponding changes and change in accordance with the present invention
Shape, but these corresponding changes and modifications all should fall within the scope of protection of the appended claims of the present invention.
Claims (10)
1. a kind of real time mass map point polymerization, which is characterized in that the real time mass map point polymerization, packet
It includes:
Obtain the longitude and latitude visual range of current map and the level of zoom of map；
Judge whether current map level of zoom is greater than the first threshold of setting, if yes then enter next step, otherwise directly
The point in the longitude and latitude visual range of current map is searched in preset point database, it will be shown on current map
And terminate process；
The longitude and latitude visual range of current map is divided into the visible range module of setting quantity, according to ready-portioned visible range mould
Block is searched in preset point database respectively, obtains the corresponding congruent point position data of each visible range module；
According to the corresponding congruent point position data of each visible range module, polymerization point is shown in current map.
2. real time mass map point polymerization as described in claim 1, which is characterized in that congruent point position data,
Including the corresponding point quantitative value of visible range module, and the coordinate position of polymerization point.
3. real time mass map point polymerization as claimed in claim 2, which is characterized in that described in preset digit
According to searching in library, the corresponding congruent point position data of each visible range module are obtained, comprising:
Point quantitative value of the latitude and longitude coordinates within the scope of the longitude and latitude of visible range module is added by database statement, is obtained
The corresponding point quantitative value of visible range module；
The latitude and longitude coordinates of point by database statement by latitude and longitude coordinates within the scope of the longitude and latitude of visible range module pass through
The average coordinates position that average algorithm is calculated is crossed, the coordinate position as polymerization point.
4. real time mass map point polymerization as claimed in claim 2, which is characterized in that the coordinate of the polymerization point
Position, for the center longitude coordinate of corresponding visible range module.
5. real time mass map point polymerization as claimed in claim 2, which is characterized in that described respectively in preset point
It is searched in the database of position, after obtaining the corresponding congruent point position data of each visible range module, further includes:
If the corresponding point quantitative value of some visible range module is less than current zoom rank corresponding second threshold, directly show
Show the corresponding all points of the visible range module.
6. a kind of real time mass map point polyplant, which is characterized in that the real time mass map point polyplant, packet
It includes:
Input module, for obtaining the longitude and latitude visual range of current map and the level of zoom of map；
Judgment module, for judging whether current map level of zoom is greater than the first threshold of setting；
Display processing module, when for being less than or equal to the first threshold of setting in current map level of zoom, directly preset
The point in the longitude and latitude visual range of current map is searched in point database, it will be shown on current map and terminate to flow
Journey；When current map level of zoom is greater than the first threshold of setting, the longitude and latitude visual range of current map is divided into and is set
The visible range module of fixed number amount is searched in preset point database respectively according to ready-portioned visible range module, is obtained every
The corresponding congruent point position data of a visible range module, according to the corresponding congruent point position data of each visible range module, by congruent point
Position is shown in current map.
7. real time mass map point polyplant as claimed in claim 6, which is characterized in that congruent point position data,
Including the corresponding point quantitative value of visible range module, and the coordinate position of polymerization point.
8. real time mass map point polyplant as claimed in claim 7, which is characterized in that the Display processing module exists
It is searched in preset point database, obtains the corresponding congruent point position data of each visible range module, perform the following operations:
Point quantitative value of the latitude and longitude coordinates within the scope of the longitude and latitude of visible range module is added by database statement, is obtained
The corresponding point quantitative value of visible range module；
The latitude and longitude coordinates of point by database statement by latitude and longitude coordinates within the scope of the longitude and latitude of visible range module pass through
The average coordinates position that average algorithm is calculated is crossed, the coordinate position as polymerization point.
9. real time mass map point polyplant as claimed in claim 7, which is characterized in that the coordinate of the polymerization point
Position, for the center longitude coordinate of corresponding visible range module.
10. real time mass map point polyplant as claimed in claim 7, which is characterized in that the Display processing module
It searches in preset point database, after obtaining the corresponding congruent point position data of each visible range module, also executes respectively
Following operation:
If the corresponding point quantitative value of some visible range module is less than current zoom rank corresponding second threshold, directly show
Show the corresponding all points of the visible range module.
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| CN110647608A (en) * | 2019-08-30 | 2020-01-03 | 深圳震有科技股份有限公司 | Map-based mass data aggregation display method, system, device and medium |
| CN110688442A (en) * | 2019-10-08 | 2020-01-14 | 浪潮软件集团有限公司 | Electronic map point location aggregation method based on multilayer grid blocks |
| CN112764859A (en) * | 2021-01-22 | 2021-05-07 | 泰华智慧产业集团股份有限公司 | Method and system for displaying positions of grid members of grid platform map in mobile terminal |
| CN112783994A (en) * | 2020-11-11 | 2021-05-11 | 上海芯翌智能科技有限公司 | Equipment information display method and device, client and server |
| CN112860831A (en) * | 2021-01-29 | 2021-05-28 | 城云科技（中国）有限公司 | Method and system for processing and displaying GIS point locations of urban management events |
| CN113177099A (en) * | 2021-05-12 | 2021-07-27 | 中移(上海)信息通信科技有限公司 | Terminal aggregation method and device, electronic equipment and readable storage medium |
| CN114500872A (en) * | 2021-12-30 | 2022-05-13 | 浙江大华技术股份有限公司 | Matching method of camera and road information, computer device and storage medium |
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