WO2020135590A1 - Internet map-based method and device for acquiring video ahead, and rescue vehicle - Google Patents

Abstract

Disclosed are an internet map-based method and device for acquiring a video ahead, and a rescue vehicle. The device comprises: a GPS positioning module used for acquiring location information of a rescue vehicle; a route analysis module used for acquiring a travel route of the rescue vehicle; a map service module used for acquiring camera point distribution information in an internet map; a camera point calculation module used for obtaining the current location of the rescue vehicle on the basis of the location information and of the traveling route, and determining multiple target camera points in a path of travel on the basis of the camera point distribution information, thus retrieving current surveillance pictures of the target camera points. The device obtains video information of the road ahead in the travel route on the basis of route information and of the camera point distribution information, calculates in real-time multiple video surveillance points ahead while traveling, retrieves the surveillance pictures, performs a fine-grained assessment of road congestion conditions, and combines with real-time road conditions to provide a decision support for route planning and navigation.

Description

Internet video-based forward video acquisition method, device and rescue vehicle

Cross-reference of related applications

This application requires the Chinese patent application number "201811642896.8" submitted by Beijing Chenan Technology Co., Ltd. and Tsinghua University on December 29, 2018, with the invention titled "Internet map-based forward video acquisition method, device and rescue vehicle" Priority.

Technical field

The invention relates to the technical field of road prediction, in particular to a method, device and rescue vehicle for acquiring forward video based on an internet map.

Background technique

Traffic congestion in the process of emergency rescue, medical rescue, and emergency handling often affects the speed of processing, causing irreparable loss of life and property. Therefore, it is possible to predict the road traffic ahead in advance, and provide effective help in the selection of routes during the travel process, further shorten the time of the rescue and travel process, and reduce the loss of life and property.

Summary of the invention

This application is based on the inventor's knowledge and discovery of the following issues:

As shown in Figure 1, a buffer zone of 3 kilometers is generated with the GPS (Global Positioning System) location as the center, and it is judged whether it is four-channel video ahead according to the positional relationship between the buffer and the video distribution point. The disadvantage of this method is that Due to the large buffer zone, the camera point of the opposite lane will be counted, which is obviously not the desired result.

As shown in Fig. 2, a buffer zone of 3 kilometers is generated with each camera position as the center, and each buffer and the GPS position point are used to determine the spatial position. If the GPS terminal falls within the scope of the camera buffer, the camera is considered to be in front For four-channel video, the disadvantage of this method is that the amount of calculation is relatively large, and the camera point of the opposite lane will be included.

The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

To this end, an object of the present invention is to provide a forward video acquisition device based on an Internet map, which provides decision support for path planning and navigation in combination with real-time road conditions, thereby providing effective assistance in the selection of routes during travel.

Another object of the invention is to propose a rescue vehicle.

Still another object of the present invention is to propose a method for acquiring forward video based on Internet maps.

In order to achieve the above object, an embodiment of the present invention provides a forward video acquisition device based on an Internet map, including: a GPS positioning module for acquiring position information of a rescue vehicle; a path analysis module for acquiring the rescue vehicle Driving path; map service module, used to obtain the distribution information of camera points in the Internet map; camera point calculation module, used to obtain the current position of the rescue vehicle based on the location information and the driving path, and based on the camera The point distribution information determines multiple target camera points in the forward route to retrieve the current monitoring screen of each target camera point.

The forward video acquisition device based on the Internet map of the embodiment of the present invention obtains the video information of the forward path of the travel route through the route information and the camera point distribution information. Detailed assessment of road congestion, combined with real-time road conditions, provides decision support for path planning and navigation, and thus can provide effective assistance in the selection of routes during travel.

In addition, the forward video acquisition device based on the Internet map according to the above embodiments of the present invention may also have the following additional technical features:

Further, in an embodiment of the present invention, it further includes: a monitoring video display module, configured to display the current monitoring screen of each target camera point.

Further, in an embodiment of the present invention, when the position information is not on the driving path, the camera point calculation module is further used to correct the position information to the driving path to obtain State the current position.

Further, in an embodiment of the present invention, the camera point calculation module is further used to generate a unilateral road buffer within a preset range of the current position, so as to convert the unilateral road satisfying the preset condition The camera point in the buffer is used as the multiple target camera points.

Further, in an embodiment of the present invention, the preset condition includes: obtaining the camera point control position relationship between the unilateral road buffer and the camera point distribution information in the unilateral road buffer And select a preset number of camera points adjacent to the current position as the multiple target camera points.

In order to achieve the above object, another embodiment of the present invention provides a rescue vehicle, which includes the above-mentioned Internet video-based forward video acquisition device. The rescue vehicle according to the embodiment of the present invention obtains the video information of the road ahead of the travel route through the route information and the camera point distribution information, calculates multiple video monitoring points ahead in real time during the travel process, collects the monitoring screen, and conducts detailed assessment of the road congestion. Combined with real-time road conditions, it provides decision support for route planning and navigation, which can provide effective assistance in the selection of routes during the process of travel.

In order to achieve the above object, a further embodiment of the present invention provides a method for obtaining a forward video based on an Internet map, which includes the following steps: obtaining the location information of the rescue vehicle; obtaining the driving path of the rescue vehicle; obtaining a camera in the Internet map Point distribution information; obtain the current position of the rescue vehicle according to the location information and the driving path, and determine multiple target camera points in the forward route according to the camera point distribution information to retrieve the Current monitoring screen.

The forward video acquisition method based on the Internet map of the embodiment of the present invention obtains the video information of the forward path of the travel route through the route information and the camera point distribution information, calculates multiple video surveillance points in front of the travel process in real time, and retrieves the monitoring screen to perform Detailed assessment of road congestion, combined with real-time road conditions, provides decision support for path planning and navigation, which can provide effective assistance in the selection of routes during travel.

In addition, the forward video acquisition method based on the Internet map according to the above embodiments of the present invention may also have the following additional technical features:

Further, in an embodiment of the present invention, it further includes: displaying the current monitoring screen of each target camera point.

Further, in an embodiment of the present invention, when the position information is not on the driving path, the position information is corrected to the driving path to obtain the current position.

Further, in an embodiment of the present invention, a unilateral road buffer is generated according to the preset range of the current position, so that the camera points in the unilateral road buffer satisfying preset conditions are used as the multiple Target camera points, wherein the preset condition includes: obtaining all cameras in the one-sided road buffer according to the camera point control position relationship between the one-sided road buffer and the camera point distribution information, and A preset number of camera points adjacent to the current position are selected as the plurality of target camera points.

Additional aspects and advantages of the present invention will be partially given in the following description, and some will become apparent from the following description, or be learned through the practice of the present invention.

BRIEF DESCRIPTION

The above and/or additional aspects and advantages of the present invention will become apparent and easy to understand from the following description of the embodiments in conjunction with the accompanying drawings, in which:

FIG. 1 is a schematic diagram of calculation of four-way forward video according to an embodiment of the present invention;

2 is a schematic diagram of calculation of four-way video in front according to another embodiment of the present invention;

3 is a schematic structural diagram of a front video acquisition device based on an internet map according to an embodiment of the present invention;

4 is a schematic flowchart of an apparatus for acquiring a front video based on an Internet map according to an embodiment of the present invention;

5 is a schematic diagram of the principle of an apparatus for acquiring a front video based on an Internet map according to an embodiment of the present invention;

6 is a flowchart of a method for acquiring a forward video based on an Internet map according to an embodiment of the present invention.

detailed description

Hereinafter, embodiments of the present invention will be described in detail. Examples of the embodiments are shown in the drawings, in which the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

The following describes an Internet map-based forward video acquisition method, device, and rescue vehicle according to embodiments of the present invention with reference to the drawings. First, an Internet map-based forward video acquisition device according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 3 is a schematic structural diagram of a forward video acquisition device based on an internet map according to an embodiment of the present invention.

As shown in FIG. 3, the Internet video-based forward video acquisition device 10 includes a GPS positioning module 100, a path analysis module 200, a map service module 300 and a camera point calculation module 400.

Among them, the GPS positioning module 100 is used to obtain the position information of the rescue vehicle. The route analysis module 200 is used to obtain the driving route of the rescue vehicle. The map service module 300 is used to obtain the distribution information of camera points in the Internet map. The camera point calculation module 400 is used to obtain the current position of the rescue vehicle according to the position information and the driving path, and determine multiple target camera points in the forward route according to the camera point distribution information to retrieve the current monitoring screen of each target camera point. The device 10 of the embodiment of the present invention obtains the video information of the road ahead of the travel route through the route information and the camera point distribution information. During the travel process, multiple video monitoring points in front of the road are calculated in real time, the monitoring screen is retrieved, and the detailed evaluation of the road congestion is carried out. Road conditions provide decision support for path planning and navigation, and thus can provide effective assistance in the selection of routes during travel.

Specifically, as shown in FIG. 3, the GPS positioning module 100 is a basic module, which includes GPS position acquisition and position positioning. The GPS position information is obtained through the GPS device. Due to the deviation of the GPS signal, it is compared with the path analysis module 3. Correction is implemented in the map module, and provides a position reference to the camera point calculation module.

The path analysis module 200 is a basic module that provides path topology analysis and path direction judgment functions based on the map, and provides a route reference for the camera point calculation module.

The map service module 300 is a basic module, which provides a basic map, a travel route, a current position, a camera point distribution display function, and a spatial position calculation and analysis function.

The camera point calculation module 400 is the core module, which integrates the position information of the GPS positioning module 100, the route information of the path analysis module 200, the camera point distribution information of the map service module 300, and calculates the travel using the spatial analysis function provided by the map service module 300 The four-way video information in front of the route provides information for the video display module.

Further, in an embodiment of the present invention, the apparatus 10 of the embodiment of the present invention further includes: a monitoring video display module 500. The monitoring video display module 500 is used to display the current monitoring screen of each target camera point.

Specifically, the monitoring video display module 500 calls the real-time monitoring video stream to display the monitoring screen according to the camera point information obtained by the camera point calculation module.

The above is a component part of the device 10 of the embodiment of the present invention, and the following will further describe the forward video acquisition device 10 based on the Internet map in conjunction with the embodiment.

Further, in an embodiment of the present invention, when the position information is not on the driving path, the camera point calculation module 400 is further used to correct the position information to the driving path to obtain the current position.

It can be understood that, as shown in FIG. 4, after the GPS positioning module 100 acquires GPS data, the path comparison module performs path comparison. If the GPS position point is not on the actual route, correction will be performed, and the camera point calculation module 400 will correct the position after correction Point to the actual route on the map.

Further, in an embodiment of the present invention, the camera point calculation module 400 is further configured to generate a unilateral road buffer according to a preset range of the current position, so as to convert the camera point in the unilateral road buffer satisfying the preset condition Camera point as multiple targets.

It can be understood that the preset range may be 1 km, 2 km, or 3 km, and those skilled in the art may set it according to the actual situation, and without further limitation, the embodiment of the present invention uses 3 km as an example for description.

Wherein, in an embodiment of the present invention, the preset conditions include: obtaining all cameras in the one-sided road buffer according to the camera point control position relationship between the one-sided road buffer and the camera point distribution information, and selecting the distance from the current position The adjacent preset number of camera points are used as multiple target camera points.

For example, as shown in FIG. 4, after positioning, a unilateral road buffer is generated within 3 kilometers of the actual driving route from the positioning point, and the camera points included in the buffer are analyzed according to the spatial position relationship between the buffer and the camera point. Calculate the distance to the anchor point along the route and select the four closest camera points as the result. Display the position of the camera point on the map, and view the real-time monitoring video in the real-time picture preview window.

The principle of the front video acquisition device 10 based on the Internet map will be described below with reference to the drawings.

As shown in Figure 5, the calculation is based on the spatial position relationship. The key is that each time the GPS position changes, a road buffer of three kilometers in front of the route is dynamically generated, and the camera point information in the buffer is obtained according to the spatial position relationship between the buffer and the camera point, and Calculate the distance to the anchor point along the route, and select the four closest camera points as the result.

According to the forward video acquisition device based on the Internet map provided by the embodiment of the present invention, the video information of the forward path of the travel route is obtained through the route information and the camera point distribution information, and multiple video surveillance points in front of the travel route are calculated in real time during the travel process, and the monitoring screen is retrieved , Carry out detailed assessment of road congestion, combined with real-time road conditions to provide decision support for path planning and navigation, so as to provide effective help in the choice of routes in the process of travel.

In addition, an embodiment of the present invention also proposes a rescue vehicle, which includes the above-mentioned Internet video-based forward video acquisition device. The rescue vehicle according to the embodiment of the present invention obtains the video information of the road ahead of the travel route through the route information and the camera point distribution information, calculates multiple video monitoring points ahead in real time during the travel process, collects the monitoring screen, and conducts detailed assessment of the road congestion. Combined with real-time road conditions, it provides decision support for route planning and navigation, which can provide effective assistance in the selection of routes during the process of travel.

Next, a method for acquiring a forward video based on an Internet map according to an embodiment of the present invention will be described with reference to the drawings.

6 is a flowchart of a method for acquiring forward video based on an Internet map according to an embodiment of the present invention.

As shown in FIG. 6, the method for acquiring forward video based on an internet map includes the following steps:

Step S601, obtaining the position information of the rescue vehicle;

Step S602, obtaining the driving path of the rescue vehicle;

Step S603: Obtain the distribution information of camera points in the Internet map;

Step S604: Obtain the current position of the rescue vehicle according to the location information and the travel path, and determine multiple target camera points in the forward route according to the camera point distribution information to retrieve the current monitoring screen of each target camera point.

Further, in one embodiment of the present invention, it further includes: displaying the current monitoring screen of each target camera point.

Further, in an embodiment of the present invention, when the position information is not on the driving path, the position information is corrected to the driving path to obtain the current position.

Further, in an embodiment of the present invention, a unilateral road buffer is generated according to a preset range of the current position, so that the camera points in the unilateral road buffer satisfying the preset conditions are used as multiple target camera points, wherein , The preset conditions include: obtaining all the cameras in the one-sided road buffer according to the camera point control position relationship between the one-sided road buffer and the camera point distribution information, and selecting the preset number of camera points adjacent to the current position as Multiple target camera points.

It should be noted that the foregoing explanation and description of the embodiment of the apparatus for acquiring the front video based on the Internet map is also applicable to the method for acquiring the forward video based on the Internet map of this embodiment, and details are not described here.

According to the forward video acquisition method based on the Internet map provided by the embodiment of the present invention, the video information of the forward path of the travel route is obtained through the route information and the camera point distribution information, and multiple video surveillance points in front of the travel path are calculated in real time during the travel process, and the monitoring screen is retrieved , Carry out detailed assessment of road congestion, combined with real-time road conditions to provide decision support for path planning and navigation, so as to provide effective help in the choice of routes in the process of travel.

In addition, the terms "first" and "second" are used for description purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first" and "second" may include at least one of the features explicitly or implicitly. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless specifically defined otherwise.

In the description of this specification, the description referring to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means specific features described in conjunction with the embodiment or examples , Structure, material or characteristic is included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, without contradicting each other, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be construed as limitations to the present invention, and those of ordinary skill in the art can understand the above within the scope of the present invention. The embodiments are changed, modified, replaced, and modified.

Claims (10)

1. A forward video acquisition device based on an internet map is characterized by comprising:

   GPS positioning module, used to obtain the location information of rescue vehicles;

   A path analysis module, used to obtain the driving path of the rescue vehicle;

   Map service module, used to obtain the distribution information of camera points in the Internet map; and

   The camera point calculation module is used to obtain the current position of the rescue vehicle according to the position information and the driving path, and determine multiple target camera points in the forward route according to the camera point distribution information to retrieve each target The current monitoring screen of the camera point.
2. The forward video acquisition device based on an internet map according to claim 1, further comprising:

   The monitoring video display module is used to display the current monitoring picture of each target camera point.
3. The Internet video-based forward video acquisition device according to claim 1, wherein when the position information is not on the driving path, the camera point calculation module is further used to correct the position information to all On the driving path to obtain the current position.
4. The forward video acquisition device based on an internet map according to claim 1 or 3, wherein the camera point calculation module is further used to generate a unilateral road buffer within a preset range of the current position to Camera points in the one-sided road buffer satisfying preset conditions are used as the plurality of target camera points.
5. The forward video acquisition device based on an internet map according to claim 4, wherein the preset conditions include:

   Obtain all cameras in the one-sided road buffer according to the camera point control position relationship between the one-sided road buffer and the camera point distribution information, and select a preset number of cameras adjacent to the current position Point as the multiple target camera points.
6. A rescue vehicle, characterized by comprising: a forward video acquisition device based on an internet map as claimed in any one of claims 1-5.
7. A method for obtaining forward video based on an internet map is characterized in that it includes the following steps:

   Obtain the location information of rescue vehicles;

   Obtaining the driving path of the rescue vehicle;

   Obtain information on the distribution of camera points in Internet maps; and

   Obtain the current position of the rescue vehicle according to the position information and the driving path, and determine multiple target camera points in the forward route according to the camera point distribution information to retrieve the current monitoring screen of each target camera point.
8. The method for acquiring a forward video based on an internet map according to claim 7, further comprising:

   The current monitoring screen of each target camera point is displayed.
9. The forward video acquisition method based on an internet map according to claim 7, wherein when the location information is not on the driving path, the location information is corrected to the driving path to obtain the current position.
10. The method for acquiring a forward video based on an internet map according to claim 7 or 9, wherein a one-sided road buffer is generated according to a preset range of the current position, so that the one-sided The camera points in the road buffer are used as the plurality of target camera points, wherein the preset conditions include:

    Obtain all cameras in the one-sided road buffer according to the camera point control position relationship between the one-sided road buffer and the camera point distribution information, and select a preset number of cameras adjacent to the current position Point as the multiple target camera points.

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