TWI503801B - Gis for providing safety instructions and method for generating map with the safety instructions - Google Patents

Description

Graphic system and map generation method for providing safety instruction information

The invention relates to a map resource system and a map generating method for providing safety instruction information, in particular to a map resource system and a related map generating method capable of generating a map with safety instruction information according to road information.

The electronic map provides a lot of location information for the user to refer to as a route planning or location search tool. In addition to the road and street profile, the electronic map also indicates many landmarks or various characteristics, such as restaurants, shops, gas stations. Etc., become the target that the user can refer to.

In the prior art, various specific locations as described above are marked as a Point of Interest (POI) on an electronic map, and various interests corresponding to a specific range may be provided according to location information generated when the user operates the terminal device. point.

However, in addition to providing users with the ability to view maps, find points of interest, or map navigation, traditional electronic maps do not provide any secure path for users to refer to.

In order to provide a user with a safety indication information through an electronic map, the present invention provides a map system and a map generation method for providing safety indication information, that is, a safety indication information is marked on the electronic map with some safety features. For the user to refer to, for example, when driving or walking, the information system with high safety index can be obtained through the map system proposed by the present invention; for example, when driving, the historical data of the driving section can be obtained through the map system proposed by the present invention. Marking, as a reference for driving safety; for example, when the night returns, the bright position mark can be obtained through the image system of the present invention, for example, the 24-hour business store, the police station, the hospital, the restaurant, the gas station, etc. are still marked on the electronic map. The location where the lights are on, and some unsafe places should be excluded, so that users can judge the safe path of night return.

A map system that provides safety instructions is, in particular, a map system that can generate maps with safety instructions based on road information. According to an embodiment, the related image system includes a database in which a plurality of points of interest with security indication information and icons depicting a certain area of area associated with each point of interest depicted on an electronic map are recorded. Here, the illustration of each region of interest occupying a certain area is generated by subtracting the occupied area of the map on the electronic map.

According to an embodiment, the points of interest may be selected from the places where the lights are still turned on at night, and the points of interest are shown as having a gradient change, and each point of interest has its own weight, and the gradient of the points of interest is It is generated according to the weight distribution of the points of interest, such as a gradient change of one or more colors.

It is worth mentioning that when there is an overlay of the area occupied by two or more points of interest in an area on the electronic map, the weight distribution of the area will be reset according to the density distribution of the area.

When the user operates a terminal device to connect to the image management system, the system transmits the corresponding location information according to the location information transmitted by the terminal device, including a point of interest map with one or more security indication information in the display range. Show.

In another embodiment, the method for generating a map described in the disclosure includes obtaining one or more points of interest information from a database, each point of interest having a coordinate location depicted on an electronic map. Then, on each point of interest on the electronic map, an icon occupying a certain area is generated. The icon is, for example, a graphic with a gradient color change, and then the road or street information is introduced, so the interest generated on the electronic map is generated. The icon of the point will deduct the area occupied by the street profile, and then generate a map with safety indication information along the road center line corresponding to each point of interest and limited by the width of the road.

In order to further understand the technology, method and effect of the present invention in order to achieve the intended purpose, reference should be made to the detailed description and drawings of the present invention. The drawings and the annexed drawings are intended to be illustrative and not to limit the invention.

10‧‧‧Network

101‧‧‧ Picture System

111‧‧‧Inadequate location information

112‧‧‧Safety Location Information

103‧‧‧ Terminal devices

105‧‧‧ Positioning satellite

21‧‧‧Points of Interest Category

23‧‧‧Safe place

31,32,33,35‧‧‧ points of interest

301,302,303,305‧‧‧Scope of influence

34,36‧‧‧The actual sphere of influence

36a, 36b‧‧‧ does not affect the scope

51,52,53‧‧‧ points of interest

501, 502, 503, 504, 505, 506 ‧ ‧ road center line

60,60’‧‧ points of interest

601‧‧‧First sphere of influence

602‧‧‧second range of influence

603‧‧‧ Third sphere of influence

62‧‧‧The road centerline

604‧‧‧First gradient range

605‧‧‧second gradient range

606‧‧‧ third gradient range

W‧‧‧weight distribution

70‧‧‧The road centerline

R‧‧‧half width

701‧‧‧Scope of influence

801‧‧‧First gradient range

802‧‧‧second gradient range

803‧‧‧ third gradient range

80‧‧‧ Road midline

100‧‧‧ points of interest

110‧‧‧Scope of influence with gradient changes

117‧‧‧ points of interest

171‧‧‧Scope of influence

118‧‧‧ points of interest

181‧‧‧Scope of influence

119‧‧‧ points of interest

191‧‧‧Scope of influence

Step S401~S409‧‧‧Map generation process

Step S901~S917‧‧‧Map generation process

1 is a schematic diagram showing the implementation of the security indication information of the present invention; FIG. 2 is a view showing the information of interest points set by the image management system of the present invention; FIG. 3A, FIG. 3B and FIG. 3C are schematic diagrams showing the interest generated by the map generation method of the present invention. Embodiment of the point influence range; the flow shown in FIG. 4 describes a step embodiment of the map generation method of the present invention; FIG. 5 is a schematic diagram showing the relationship between the point of interest and the road in the present invention; FIG. 6 is a schematic view showing the point of interest according to the present invention. The road influence gradient map drawn by the weight; FIG. 7 is a schematic view showing the influence range of the road in the present invention; FIG. 8 is a view schematically showing the road influence gradient map of the present invention with safety indication information; and the flow shown in FIG. 9 describes the map generation method of the present invention. Step embodiment; FIG. 10 is a schematic view showing one embodiment of a map having security indication information according to the present invention; and FIG. 11 is a view showing a second embodiment of the map having security indication information according to the present invention.

In order to provide a user with a map with safety indication information, the present invention provides a map resource system for providing safety indication information and a method for generating related maps, wherein the main icon shows various places related to personal safety, and the user is allowed to References can be avoided to walk to a relatively unsafe location, or to be able to pay attention to relatively unsafe areas. For example, through the map generation method, the location of the accident in a certain period of time is marked, and the location of the accident in the accident is highlighted by means of the illustration, so that a safety warning effect can be generated. In other embodiments, the location of the nightlights and the range affected by the brightness can be indicated by the icon, so that the user who is at night can determine a relatively safe route. Other embodiments may show safety instructions for providing friendly facilities or locations such as "disability, maternity and child" through the icon generated by the system. The various embodiments contained in the specification are derived from the same inventive concept and are not used to As a limitation.

FIG. 1 is a schematic diagram showing the implementation of the security indication information of the present invention.

The image system 101 described in the present disclosure provides a user with a servo system having a security indication information map through the terminal device 103. This example shows that the user can operate the terminal device 103 and connect to the image system via the network 10. 101, and obtain a map image of the desired area. If the terminal device 103 can obtain the positioning information of the positioning satellite 105, the image system 101 can provide a corresponding map image according to the location information, that is, when the user operates the terminal device 103, the image system 101 can provide a nearby location according to the location of the user. Safety instructions.

For example, the terminal device 103 can be installed with an application corresponding to the service, such as a mobile application APP that is commonly used in a mobile device, but does not exclude a map with security indication information that can be obtained through a webpage or a map software. The map system 101 includes one or more maps with security indication information, such as an accident location indication information 111 or secure location indication information 112, in the illustration.

These safety instructions are marked on the electronic map by means of pictograms. The map database of the related map system 101 contains maps, roads, street profiles, point of interest (POI), and indications at various points of interest. Safety instructions, etc.

The above-mentioned points of interest (POI) will provide different choices according to the attributes of the safety instructions to be provided, such as marking the location of the accident in the car accident, and the point of interest can be the location of each accident caused by the government unit database. To indicate a handicapped or maternal and child friendly route, you can mark a sidewalk, a disabled slope or a blind spot. The location of the brick. To indicate the bright spot of the night, as shown in FIG. 2, the point of interest information set by the map system of the present invention provides the safety indication information.

A table in the table shown in FIG. 2 describes a plurality of interest point categories 21, and a safe place 23 corresponding to each interest point category 21. The categories or locations listed therein are not intended to limit the scope of implementation of the present invention. This example is to list some points of interest that are relatively safe at night, that is, to set a place for nighttime safety, in which case the location should be considered to be 24 hours. Stores that are open, such as convenience stores, need to avoid even bright, relatively unsafe locations, such as insufficient brightness (darkness) or sensual venues.

The points of interest that can be applied to the techniques described in the disclosure of the present invention can be referred to the point of interest category 21 and the safe place 23 of FIG. 2. For example, the point of interest category 21 is a "government institution" related point of interest such as "police station". "Fire Station"; Interest Point Category 21 is a "medical institution" related interest points such as "Hospital, Clinic"; Interest Point Category 21 is "Hotel Travel" related points of interest such as "hotel, hotel"; interest point category 21 For "leisure entertainment", there is a 24-hour KTV; for the "point shopping" category 21, there may be a "24-hour convenience store" in the local area; other restaurants such as 24-hour restaurants and gas stations can be listed in this book. The safe place 23 employed by the embodiment of the invention. The actual application is not limited to the above-mentioned chart, and the points of interest may be selected from any place that is still lit and bright at night, but in terms of relatively safe points of interest, some places that are still open at night may be excluded.

In the following embodiment, the selected various points of interest are drawn in the electronic map, and a point or an area on the electronic map is set according to the coordinate position of each point of interest, and the safety influence range of each point of interest is indicated by the graphic, for example, The illustration of the area of brightness of each point of interest is represented by a graphical representation of a certain area of interest.

3A, 3B, and 3C are schematic diagrams showing an embodiment in which the map generating method of the present invention generates a range of influence points of interest points.

FIG. 3A shows that there are two points of interest 31, 32 in an area on the electronic map, which respectively have a certain influence range 301, 302. However, the actual embodiment does not limit the actual influence range of each point of interest (such as setting the distance), but may According to the relative points of interest The security weight sets the range of influence of this point. For example, a police station that does not turn off the lights for 24 hours has a higher security weight, followed by a convenience store that does not fight for 24 hours, and the security weight of the window that still lights at night is relatively low. However, the intensity of the points of interest 31, 32 will also affect the security scope of the area. The more points of interest in the unit area, the higher the security of the area.

FIG. 3B schematically shows a point of interest 33 and an influence range 303. The same range of influence 303 may not be a certain distance, but a range indicated by the weight of the point of interest 33. In this example, the point of interest 33 is located near the intersection of a street profile, and there are at least two roads nearby. The representation of the influence range 303 will reduce the range occupied by the street profile, showing the actual influence range 34, so the influence range 303 is only On the road near the point of interest 33.

FIG. 3C schematically shows a point of interest 35 on the map. The influence range 305 of the point covers the nearby street profile and the road. After the area occupied by the street profile is subtracted, the remaining area covers only the road, as shown in the figure. The actual impact range is 36. However, further, under actual conditions, the range of brightness to which the point of interest 35 is applied does not affect the range of roads or lanes at the rear end of the street outside the road adjacent to the point, such as the range 36a in the illustration. 36b. Therefore, the embodiment of the present invention also considers the range of actual influence when describing the influence range of each interest point by way of illustration.

In this example, the reference points of interest or brightness safety considerations, such as the road section where the store is open, can be regarded as a safer area; the security level is determined according to the user's visible light source, and the denser the light is, the brighter the store is. The more secure it is.

The above-mentioned calculation method for judging the security of each region can refer to a Kernel Density Estimation method for judging the characteristic density of a region, and the nuclear density estimation method can be used to perform spatial nuclear density for a certain characteristic location. Distribution analysis, to get the impact of the location, the image range can be expressed in different colors, gradient color.

The method flow for generating the above-mentioned points of interest related maps may refer to the step embodiment shown in FIG. 4 first.

The process includes a starting step S401, which first acquires one or more points of interest information from a database, including attributes of each point of interest, coordinate positions, and the points of interest have coordinate positions depicted on the map.

Then, when these points of interest are drawn on the electronic map according to the coordinate position, an icon occupying a certain area is generated on each point of interest on the electronic map, and the icon can be expressed in a solid color, or the color can be changed according to the distance or The color gradation can be further represented by the gradual change of the external points according to the weight of each interest point. For example, step 8403, the various points of interest may be provided with different weights according to the attributes and various needs of the map, whereby the weight assignment may draw a graphical representation of the gradient changes.

The method is as follows: S405, the road or the street information in the map information is introduced, and the main purpose thereof is that the street area occupied by the street can be deducted as described in step S407, as shown in FIG. 3B; or in another embodiment, Other unreasonable areas can be deducted, as shown in Figure 3C. Then, an icon of each point of interest is generated on the above electronic map, wherein each icon is at least deducted from the street area.

The embodiment may further continue as in step S409, in order to highlight the range of influence of each point of interest through the change of the figure, a safety indication icon with gradient changes of each point of interest may be generated. In particular, if each point of interest has its own weight, the gradient change of the point of interest may be generated according to the weight distribution of the point of interest, including the stepwise change of one or more colors, or only the solid color The scope of influence of weights.

The above-mentioned calculation method for judging the security of each region can refer to the Kernel Density Estimation method commonly used for judging the regional characteristic density by the prior art, and the nuclear density estimation method can be used for the space of a certain characteristic. The nuclear density distribution analysis obtains the influence trend of the location, and the image range can be expressed in different colors and gradient colors.

The embodiments described in the present disclosure can be applied to display specific security indication information through various points of interest on the map for pedestrian or vehicle driving reference, and one can choose how to decide whether to walk or drive a route. Relevant maps with safety instructions can be based on information on the locations and events published by government agencies. Draw points of interest and related influence ranges, indicating the location information of the accident, so that people can evade specific areas according to the map icon, or provide a reference and be more careful.

The map drawn according to the embodiment of the present invention represents safety location indication information, such as providing a map of various attribute business places as a safety reference; and providing a disabled person or a child or young person according to a safety facility (such as a gentle slope or a ladder) reference. For example, it can be used as a reference for pedestrians who are still on the road at night. They can walk on a relatively safe road. Through the map, they can get safety information about the still bright points of interest of the pedestrians. One of the purposes is to avoid the passage when returning home late at night. More dim areas.

In the embodiment of the present invention, in order to describe the influence range of each interest point, road and street profile information is further introduced, as shown in FIG. 5, which is a schematic diagram of the relationship between the point of interest and the road in the present invention.

The figure shows the map of the road and the street profile of a certain area. The figure shows that there are several points of interest 51, 52, 53. The safety scope of each point of interest extends to the adjacent roads, so the calculation of each point of interest 51 The range of influence of 52, 53 will take into account the location of the adjacent roads to indicate useful and practical safety instructions.

In order to depict the influence of the neighboring roads at the points of interest 51, 52, 53, first obtain the information of each road. For example, there are several one-way streets in the figure, that is, the road is represented by the middle line of the road, and the road information will show multiple points of the middle line. Coordinates; if it is a two-way road, the center line of the road adjacent to the one-way point of interest can be used, and the influence range may not be on the other one-way road of the opposite street.

For example, the point of interest 51 has at least two adjacent roads, respectively represented by the road center line 501, 502, and then the road center line closest to the point of interest 51 is used to obtain the road affected by the point of interest 51. If the scope of influence may be on two roads at the same time, other methods do not rule out the centerline of two roads. In this example, the point of interest 51 and the road center line 501, 502 can calculate two vertical distances respectively, and the road center line 501 having the shortest distance is the road that the point of interest 51 can affect.

The point of interest 52 is adjacent to the road centerline 503, 504, and an illustration of the safety indication information is drawn at a shorter distance (such as the road centerline 504). There are also two points of interest 53 The adjacent roads are respectively the road center line 505, 506, and finally the shortest road center line selected from them as an illustration of the safety indication information for drawing the point of interest 53.

After deciding the centerline of the road represented by each point of interest (the actual implementation can still be limited to one), the diagrams with gradient changes will be drawn on each road according to the safety impact of each point of interest, or according to the points of interest. Weight assignments plot different gradient changes.

As shown in FIG. 6, the point of interest in the present invention is based on the weighted road impact gradient map. This example shows that a point of interest 60 is mapped according to its weight distribution to reflect gradient changes of different influence ranges, and gradient changes and weights are designed. It will be related to the actual system design, the system can give different points of interest 60 the same weight, so the gradient changes are similar; if each point of interest is given its own weight according to the attribute, the gradient change will also vary according to the weight distribution.

This example shows that the weight assignment W of the point of interest 60 changes from W=5 closest to the location of the point of interest 60 to W=0, indicating that the first range of influence 601 represents W=5, that is, the area with the greatest influence; The range 602 represents the area of W=2, that is, the area in which the influence is second; the area of W=1 is represented by the third influence range 603; and the range of W=0 at the end also indicates the area where the point of interest 60 has no influence according to the weight.

For example, the point of interest 60 is a place that is still bright at night, and the area indicated by W=5 is the range indicating the highest brightness, and the part with the highest security, and W=0 has already affected the point of interest 60. Areas outside the range. The illustrations depicted on the figure will be represented by a gradient diagram based on the gradient changes of the weight assignments W, so that the user can directly know the safety indication information of the area from the icon on the map.

The gradient change of the upper half of Figure 6 for the point of interest 60 will then be applied to the illustration on the adjacent road on the map, as shown below the graphical gradient change on a road centerline 62, i.e., The point of interest 60 is projected onto the road centerline 62 based on the representation of the weight distribution W, and is more limited by the width of the road to reasonably represent the range of influence of the point of interest 60.

The road centerline 62 has a projected point of interest 60' that produces a graphical representation of the gradient change along the road centerline 62 based on the weight distribution. For example, the innermost W=5 region is represented by a first gradient range 604, which may be relatively dark or densely represented; the W=3 region is represented by a second gradient range 605, which may be shallower or denser. The lower graphical representation; the region of W = 1 is represented by a third gradient range 606 and may be represented by a relatively lighter or lower density representation. There is no corresponding illustration at W=0, indicating that the point of interest 60 has no effect.

Fig. 7 is a view schematically showing a range of influence of roads in the present invention. When the road center line is used as an index indicating the range of influence of the point of interest, as shown in Fig. 5 above, each road center line 70 is disposed in the middle of the road and spaced from the edge of the road. It is a half-way width r, which is the influence range 701 of the road center line 70.

On this line, the gradient change diagram shows the change in the external influence of the center point (point of interest), as shown in the road influence gradient map shown in FIG. The gradient change according to the weight distribution by the center on the road center line 80 includes the influence range of W=5 represented by the first gradient range 801; the influence range of W=3 by the second gradient range 802; and the third gradient range 803 Indicates the range of influence of W=1. W=0, which is farthest from the center point, indicates an area that has no effect.

The flow of the embodiment of the present invention for generating a map with security indication information can be seen in the flow shown in FIG.

Beginning with step S901, the point of interest information is obtained from the map database, and each point of interest has a coordinate position depicted on an electronic map. The system will represent the gradient change of the influence distribution according to the attribute of each interest point in a specific illustration. For example, different weight distributions may be set according to the attribute of the point, so that a map occupying a certain area area is generated on each point of interest on the electronic map. Show. The illustration may represent a gradient change in a manner that varies in color, one or more gradients, and the like.

The database contains road and street profile information, wherein each road can be formed by a plurality of coordinate positions depicted by the middle line of the road, and the street profile is mostly composed of non-road main bodies such as buildings and facilities, as step S903, the steps will be self-contained. The database introduces road and street information.

Then, the system will determine the neighboring roads of each point of interest, as in step S905, and determine the weight of each point of interest. In step S907, the weight gradient of each point of interest can be set according to the weight of each point of interest, as in step S909, and according to the weight. The gradient is obtained corresponding to the influence gradient on the adjacent road of each point of interest, as by step S911.

Then, the above-mentioned points of interest of each point of interest are embedded in the adjacent roads of the points of interest. In step S913, each road has a certain width. If the whole road has different widths, the widest one can be the widest. The distance or other set width is the datum of the drawing, wherein the graph of the gradation or color change of each region of interest occupying a certain area is generated along the road center line corresponding to the point of interest and limited by the width of the road. The street profile is deducted, and in step S915, a map with safety instruction information is finally generated (step S917). The map will be stored in the image server for users to access, and the map database will be updated regularly. The points of interest will be increased or decreased according to the actual situation. The way to update the map is as described above.

According to the above steps and the manners of the embodiments, a map system for providing safety instruction information is constructed, wherein a database is provided, wherein a plurality of points of interest with safety instruction information and various interests depicted on an electronic map are recorded. For the embodiment of the figure, reference may be made to FIG. 10 and FIG. 11 , and the illustration is generated on the electronic map by subtracting the occupied area of the street. The map system will transmit a map corresponding to the location information according to the location information transmitted by the terminal device, and the map has a map of interest points with one or more security indication information in a display range.

Finally, after calculating the gradient change graph of each interest point, and applying the influence gradient map along the road center line, an embodiment of the map with the safety indication information of the present invention as shown in FIG. 10 can be presented.

The influence range 110 having the gradient change is drawn according to the weight distribution on the adjacent road of the point of interest 100, so that the user can see the change of the influence range from the illustration of one or more points of interest from the relevant area of the position.

Figure 11 then schematically shows another map showing an area of a plurality of points of interest 117, 118, 119 having a gradient change effect on its neighboring roads. Range 171, point of interest 118 also has an impact range 181 on the adjacent road, and point of interest 119 has an influence range 191.

This example shows that the point of interest 117 and the point of interest 118 are adjacent points of interest, so the corresponding range of influence 171 overlaps with the range of influence 181, and the system will update according to the weight of the point of interest in a unit area according to the weight of each point of interest. Among them, the weight distribution, when the unit area is smaller, the interest points are less related to each other. If the unit area is large, it is obvious that the number of points of interest may be more, and cluster phenomenon occurs at this time. For example, using the Kernel Density Estimation method, a cluster phenomenon can be estimated based on the distribution of interest points in a unit area, and the weight distribution according to the density of interest points can be regained. For example, when there are two or more points of interest in an area, and the icons of the areas occupied by the points of interest overlap, the overlapping areas have different influences of two points of interest at the same time, and the weights of the original areas are relatively It will be upgraded, and the system can reset the weight distribution of the area according to the density distribution of this area, and then assign a graph with gradient changes along the road according to this weight distribution.

Therefore, the present invention provides a map resource system and a map generation method for providing security indication information, the main purpose of which is to find a point of interest according to the requirements of the security indication, and when it is drawn on the electronic map, each point of interest is possessed. The illustration of the area of a certain area can express the influence range of the point of interest through the icon of the gradient change, thereby achieving the purpose of the safety instruction, so that the user can conveniently obtain the safety indicators of each place when browsing the map.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

100‧‧‧ points of interest

110‧‧‧Scope of influence with gradient changes

Claims (7)

A map generating method includes: obtaining one or more points of interest information from a database, each point of interest having a coordinate position depicted on an electronic map; and generating a certain area area on each point of interest on the electronic map Graphical representation; introduction of road or street information; and generation of icons of various points of interest on the electronic map, wherein each icon is deducted from the occupied area of the street, and each of the points of interest occupy a certain area of the image has a An illustration of the gradient change, the gradient change of the point of interest is generated according to the weight distribution of the point of interest, and the gradient change of each point of interest is represented by a gradient change of one or more colors. The map generating method according to claim 1, wherein when there is an overlay of the area occupied by two or more points of interest in an area on the electronic map, the density is reset according to the density distribution of the area The weight assignment of the area. The map generating method according to claim 1, wherein the road information includes a road width of a neighboring road of each interest point and a road center line. The map generating method according to any one of claims 1 to 3, wherein the icon occupying a certain area of each point of interest is generated along a road center line corresponding to the point of interest and limited by the width of the road. The map generating method according to claim 4, wherein the road corresponding to each point of interest is the closest road to the point of interest. The map generating method according to claim 5, wherein the point of interest is a place selected to be bright and bright at night. A map system for providing security indication information, comprising: a database, wherein a plurality of points of interest with security indication information and icons depicting a certain area of area associated with each point of interest on an electronic map are recorded; wherein The icon of each region of interest occupying a certain area is on the electronic map, and each icon is deducted from the occupied area of the street. Generating a map of interest points of one or more pieces of safety instruction information in a display range corresponding to the position information according to the position information transmitted by the terminal device, each point of interest having its own weight The graph occupying a certain area is a graph having a gradient change, and the gradient change of the point of interest is generated according to the weight distribution of the point of interest.