WO2019034053A1

WO2019034053A1 - Target location method, device and system

Info

Publication number: WO2019034053A1
Application number: PCT/CN2018/100459
Authority: WO
Inventors: 陈碧泉
Original assignee: 杭州海康威视数字技术股份有限公司
Priority date: 2017-08-15
Filing date: 2018-08-14
Publication date: 2019-02-21
Also published as: CN109410278B; CN109410278A

Abstract

Provided by embodiments of the present application are a target location method, device and system, the system comprising an acquisition device and a server; the server obtaining a monitoring target feature and sending the monitoring target feature to an acquisition device; the acquisition device receiving the monitoring target feature, and extracting a feature from an image acquired thereby so as to obtain a feature to be matched; determining whether the feature to be matched and the monitoring target feature match; if yes, determining a location of a monitoring target on the basis of a location of the acquisition device. Hence, in the present solution, the acquisition device analyzes and processes images acquired thereby instead of sending all of the acquired images to the server for analysis and processing, thus reducing network bandwidth occupancy rate.

Description

Target positioning method, device and system

This application claims the priority of the Chinese Patent Application filed on August 15, 2017, the Chinese Patent Office, Application No. 201710697867.0, entitled "A Target Positioning Method, Apparatus, and System", the entire contents of which are incorporated herein by reference. In the application.

Technical field

The present application relates to the field of image processing technologies, and in particular, to a target positioning method, apparatus, and system.

Background technique

In the video surveillance process, it is usually necessary to locate the monitoring target. The general positioning scheme usually includes: each collecting device sends the collected video to the server, the server receives and stores each video, and the server analyzes each video to determine the video with the monitoring target and the device that collects the video. Location information, based on the location information, determining the location of the monitoring target.

In the above solution, each device sends a video to the server, which occupies more network bandwidth.

Summary of the invention

The purpose of the embodiments of the present application is to provide a target location, device, and system to reduce network bandwidth usage.

To achieve the above objective, the embodiment of the present application provides a target positioning system, including an acquisition device and a server, where the server is configured to acquire a monitoring target feature, and send the monitoring target feature to the collection device. The collecting device is configured to receive the monitoring target feature, and is further configured to collect an image, perform feature extraction on the image, obtain a feature to be matched, and determine whether the to-be-matched feature matches the monitoring target feature; Yes, based on the location of the collection device, the location of the monitoring target is determined.

Optionally, the collecting device may be further configured to: after determining the location of the monitoring target based on the location of the collecting device, send prompt information to the server; the server may also be configured to receive The prompt information determines a location of the monitoring target according to the prompt information.

Optionally, the system includes multiple collection devices, and the collection device may be further configured to send prompt information to the server after determining the location of the monitoring target based on the location of the collection device. The server may be further configured to receive prompt information sent by each collection device, and determine a location and a time corresponding to each prompt information, where the location is: a location of the monitoring target determined according to the prompt information, The time is: the time at which the prompt information is received; and a trajectory is generated as the trajectory of the monitoring target according to the position and time corresponding to each piece of prompt information.

To achieve the above objective, the embodiment of the present application further provides a target positioning method, which is applied to an acquisition device, including: acquiring a monitoring target feature; performing feature extraction on the image collected by itself to obtain a to-be-matched feature; and determining the to-be-matched feature Whether it matches the monitoring target feature; if so, based on the location of the collection device, determining the location of the monitoring target.

Optionally, the step of acquiring the monitoring target feature may include: receiving a monitoring target feature sent by the server; or acquiring an image including the monitoring target, performing feature extraction on the image, and obtaining a monitoring target feature.

Optionally, the step of determining the location of the monitoring target based on the location of the collecting device may include: determining a location of the collecting device as a location of the monitoring target; or, according to the collecting device The location, and the field of view of the collection device, determine the location of the monitoring target.

Optionally, in a case of determining that the to-be-matched feature matches the monitoring target feature, the method may further include: determining that the to-be-matched feature corresponds to a location in the image, as the monitoring target a position in the image; the step of determining a location of the monitoring target based on a location of the collection device, comprising: a location according to the collection device, and a location of the monitoring target in the image And determining the location of the monitoring target.

Optionally, after the step of determining the location of the monitoring target based on the location of the collecting device, the method may further include: outputting a location of the monitoring target; or outputting the location of the monitoring target and the The image collected by itself; or, the prompt information is sent to the server, and the prompt information is used to prompt the location of the monitoring target.

To achieve the above objective, the embodiment of the present application further provides a target positioning method, which is applied to a server, and includes:

Acquiring the monitoring target feature; sending the monitoring target feature to the collecting device, so that the collecting device sends the prompting information to the server when determining that the feature in the captured image matches the monitoring target feature; The prompt information is described, and the location of the monitoring target is determined according to the prompt information.

Optionally, the step of determining the location of the monitoring target according to the prompt information includes: reading a location of the monitoring target carried in the prompt information; or sending the prompt information The location of the device is determined as the location of the monitoring target; or the location of the monitoring target is determined according to the location of the collection device that sends the prompt information and the field of view; or the location carried in the prompt information is read. The position of the monitoring target in the image is determined, and the position of the monitoring target is determined according to the position of the monitoring target in the image and the position of the collecting device that sends the prompt information.

Optionally, after the step of determining the location of the monitoring target according to the prompt information, the method further includes: determining a location corresponding to each prompt information, and At a time, the location is: a location of the monitoring target determined according to the prompt information, where the time is: a time when the prompt information is received; and a track is generated according to the location and time corresponding to each prompt information, as the Monitor the trajectory of the target.

Optionally, after the step of generating a trajectory as the trajectory of the monitoring target according to the position and time corresponding to each piece of prompt information, the method further includes: performing, according to the trajectory of the monitoring target, the monitoring target Perform trajectory prediction.

Optionally, the number of the monitoring target is greater than 1; the step of acquiring the monitoring target feature may include: acquiring each monitoring target feature and a corresponding monitoring target identifier; and sending the monitoring target feature to the collecting device The step may include: sending the monitoring target feature and the corresponding monitoring target identifier to the collecting device; after the step of receiving the prompting information, the method may further include: determining a monitoring target identifier included in each prompt information The step of generating a trajectory as the trajectory of the monitoring target according to the position and time corresponding to each piece of prompt information may include: corresponding to each monitoring target, each piece of prompt information corresponding to the monitoring target identifier The position and time, a trajectory is generated as the trajectory of the monitoring target.

To achieve the above objective, the embodiment of the present application further provides a target positioning apparatus, which is applied to an acquisition device, and includes: a first acquisition module, configured to acquire a monitoring target feature; and an extraction module, configured to perform feature extraction on the image collected by itself. And obtaining a feature to be matched; the determining module is configured to determine whether the feature to be matched matches the feature of the monitoring target; if yes, triggering the first determining module; and the first determining module is configured to determine, according to the location of the collecting device, Determine the location of the monitoring target.

Optionally, the first acquiring module may be specifically configured to: receive a monitoring target feature sent by the server; or acquire an image that includes the monitoring target, perform feature extraction on the image, and obtain a monitoring target feature.

Optionally, the first determining module may be specifically configured to: determine a location of the collecting device as a location of the monitoring target; or, according to a location of the collecting device, and a field of view of the collecting device Range, determining the location of the monitoring target.

Optionally, the device may further include: a second determining module, configured to determine, in the case that the determining result of the determining module is YES, that the to-be-matched feature corresponds to a position in the image, as the monitoring The position of the target in the image; the first determining module is specifically configured to: determine a location of the monitoring target according to a location of the collecting device and a position of the monitoring target in the image.

Optionally, the device may further include: an output module, configured to output a location of the monitoring target; or output a location of the monitoring target and the image collected by the self; or send a prompt message to the server, where The prompt information is used to prompt the location of the monitoring target.

To achieve the above objective, the embodiment of the present application further provides a target locating device, which is applied to a server, and includes: a second acquiring module, configured to acquire a monitoring target feature; and a sending module, configured to send the monitoring target feature to the collecting device. In the case that the collecting device determines that the feature in the captured image matches the monitoring target feature, sending the prompt information to the server; the receiving module is configured to receive the prompt information; and the third determining module, And configured to determine a location of the monitoring target according to the prompt information.

Optionally, the third determining module may be configured to: read a location of the monitoring target carried in the prompt information; or determine a location of the collecting device that sends the prompt information as the monitoring Position of the target; or determining the location of the monitoring target according to the location of the collection device that sends the prompt information and the field of view; or reading the location of the monitoring target in the image carried in the prompt information And determining a location of the monitoring target according to a location of the monitoring target in the image and a location of the collection device that sends the prompt information.

Optionally, the number of the prompt information is greater than 1, the device may further include: a fourth determining module, configured to determine a location and a time corresponding to each piece of prompt information, where the location is: determined according to the prompt information The time of the monitoring target is the time when the prompt information is received, and the generating module is configured to generate a trajectory as the trajectory of the monitoring target according to the position and time corresponding to each prompt information.

Optionally, the device may further include: a prediction module, configured to perform trajectory prediction on the monitoring target according to the trajectory of the monitoring target.

Optionally, the number of the monitoring targets is greater than 1; the second acquiring module may be specifically configured to: acquire each monitoring target feature and a corresponding monitoring target identifier; and the sending module may be specifically configured to: collect The device sends the each monitoring target feature and the corresponding monitoring target identifier; the fourth determining module may be further configured to determine a monitoring target identifier included in each prompt information; the generating module may be specifically configured to: target Each monitoring target generates a trajectory as a trajectory of the monitoring target according to the position and time corresponding to each prompt information including the monitoring target identifier.

To achieve the above objective, an embodiment of the present application further provides an electronic device, including a processor and a memory, wherein the memory is used to store a computer program, and the processor is configured to execute the program stored on the memory. A target positioning method applied to an acquisition device.

To achieve the above objective, an embodiment of the present application further provides an electronic device, including a processor and a memory, wherein the memory is used to store a computer program, and the processor is configured to execute the program stored on the memory. A target location method applied to a server.

In order to achieve the above object, an embodiment of the present application further discloses a computer readable storage medium, where the computer readable storage medium stores a computer program, and when the computer program is executed by the processor, any one of the foregoing is applied to the collection. The target location method of the device.

In order to achieve the above objective, the embodiment of the present application further discloses a computer readable storage medium, where the computer readable storage medium stores a computer program, and when the computer program is executed by the processor, the foregoing one is applied to the server. Target targeting method.

In order to achieve the above object, an embodiment of the present application further discloses an executable program code for being used to execute any of the above-described target positioning methods applied to an acquisition device.

To achieve the above objective, an embodiment of the present application further discloses an executable program code for being used to execute any of the above-described target positioning methods applied to a server.

Applying the embodiment shown in the present application, the collecting device performs feature extraction on the image collected by itself, and matches the extracted feature with the monitoring target feature. When the matching is successful, the position of the monitoring target is determined based on the position thereof; The collection device analyzes and processes the images collected by itself, instead of sending all the collected images to the server for analysis and processing, thus reducing the network bandwidth occupation rate.

Of course, implementing any of the products or methods of the present application does not necessarily require that all of the advantages described above be achieved at the same time.

DRAWINGS

In order to more clearly illustrate the embodiments of the present application and the technical solutions of the prior art, the following description of the embodiments and the drawings used in the prior art will be briefly introduced. Obviously, the drawings in the following description are only Some embodiments of the application may also be used to obtain other figures from those of ordinary skill in the art without departing from the scope of the invention.

1 is a schematic diagram of a first structure of a target positioning system according to an embodiment of the present application;

2 is a schematic diagram of a second structure of a target positioning system according to an embodiment of the present application;

FIG. 3 is a schematic flowchart of a target positioning method applied to an acquisition device according to an embodiment of the present disclosure;

FIG. 4 is a schematic diagram of a first process of a target location method applied to a server according to an embodiment of the present disclosure;

FIG. 5 is a second schematic flowchart of a target positioning method applied to a server according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of a target positioning apparatus applied to an acquisition device according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of a target positioning apparatus applied to a server according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure;

FIG. 9 is a schematic structural diagram of another electronic device according to an embodiment of the present disclosure.

Detailed ways

In order to make the objects, technical solutions, and advantages of the present application more comprehensible, the present application will be further described in detail below with reference to the accompanying drawings. It is apparent that the described embodiments are only a part of the embodiments of the present application, and not all of them. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

In order to solve the above technical problem, the embodiment of the present application provides a target positioning method, device, and system. The following is a detailed description of a target positioning system provided by an embodiment of the present application. The system can be as shown in FIG. 1 , including an acquisition device and a server, where

The server is configured to acquire a monitoring target feature, and send the monitoring target feature to the collecting device;

The collecting device is configured to receive the monitoring target feature, and is further configured to collect an image, and perform feature extraction on the image to obtain a feature to be matched; determine whether the to-be-matched feature matches the monitoring target feature; if yes, based on the acquiring The location of the device (self location) to determine the location of the monitoring target.

The collection device is a smart terminal such as a mobile phone or a PAD, or may be a camera, a camera, or the like, and is not limited.

The collecting device determines the location of the monitoring target based on its own location, and may be in various ways, including but not limited to the following:

For example, the collection device can directly determine its own location as the location of the monitoring target.

For another example, the collection device can determine the location of the monitoring target based on its own location and its own field of view.

For example, if the acquisition device is a ball machine, the camera of the dome camera can be rotated, that is, the dome camera can be used for image acquisition in different directions. In this case, combined with the position of the dome camera and the field of view of the dome camera (right The image acquisition is performed in which direction, and the position of the monitored target is determined to be more accurate.

For another example, the collecting device may first determine that the to-be-matched feature corresponds to a position in the image as a position of the monitoring target in the image; and then determine a monitoring target according to the position of the target and the position of the monitoring target in the image. position.

For example, the acquisition device can be a wide-angle camera, and the field of view of the captured image is large. For example, the image captured by the wide-angle camera includes a cell, a park, and a square. In this case, the monitoring target can be further determined. The position in the image (determining that the feature to be matched corresponds to the position in the image).

If the field of view of the wide-angle camera is fixed, the area division can be performed in the image acquired by the wide-angle camera, and the image areas corresponding to the above-mentioned cells, parks, and squares are divided into different image areas. After determining the position of the monitoring target in the image, it can be determined according to the image region where the position is located whether the monitoring target is in the cell, in the park, or in the square. It can be seen that, combined with the position of the wide-angle camera and the position of the monitoring target in the image, the position of the monitored target is determined to be more accurate.

Applying the embodiment shown in FIG. 1 of the present application, the collection device analyzes and processes the image collected by itself, instead of sending all the collected images to the server for analysis and processing, thereby reducing network bandwidth occupancy.

As an implementation manner, the collecting device may be further configured to send prompt information to the server after determining the location of the monitoring target based on the location of the collecting device;

The server is further configured to receive the prompt information, and determine a location of the monitoring target according to the prompt information.

In this embodiment, the server may also locate the monitoring target. The server determines the location of the monitoring target according to the prompt information. There may be multiple situations, including but not limited to the following, such as:

After the collection device determines the location of the monitoring target, the location of the monitoring target is carried in the prompt information and sent to the server, and the server directly reads the location of the monitoring target carried in the prompt information.

2. The collection device sends the "self-position and the scope of the field of view" to the server in the prompt information, and the server determines the monitoring target according to the location of the collection device carried in the prompt information and the field of view of the collection device. position.

For example, if the acquisition device is a ball machine, the ball machine can be rotated in the horizontal direction and the vertical direction, that is, the ball machine can be aligned in different directions for image acquisition. In this case, the server combines the position of the ball machine and the ball machine. The field of view (which direction is used for image acquisition) determines the location of the monitored target more accurately.

3. The collection device carries the “self-scope field” in the prompt information and sends it to the server; the server obtains the location information of each collection device in advance, and after receiving the prompt information, the server determines the location of the collection device that sends the prompt information; The determined location of the collection device and the field of view of the collection device carried in the prompt information determine the location of the monitoring target.

In the third case and the second case, the server determines the location of the monitoring target according to the location of the collection device and the field of view; the difference is that in the second case, the prompt information includes the location of the collection device, In the three cases, the location of the collection device is not included in the prompt information, and the server obtains the location of the collection device in advance.

4. The collecting device carries the “home position and the position of the monitoring target in the captured image” in the prompt information and sends it to the server; after receiving the prompt information, the server collects the image according to the location of the collecting device and the monitoring target. The location in the location determines the location of the monitoring target.

For example, the acquisition device can be a wide-angle camera, and the field of view of the captured image is large. For example, the image captured by the wide-angle camera includes a cell, a park, and a square. In this case, the position of the wide-angle camera can be combined. And monitor the position of the target in the image to determine the location of the monitored target.

5. The collection device carries the location of the monitoring target in the image collected by itself (acquisition device) in the prompt information and sends it to the server; the server obtains the location information of each collection device in advance, and after receiving the prompt information, the server determines the sending prompt. The location of the information collection device; the server determines the location of the monitoring target according to the determined location of the collection device and the “location of the monitoring target in the collection image of the collection device itself” carried in the prompt information.

In the fifth case and the fourth case, the server determines the position of the monitoring target according to the position of the collecting device and the position of the monitoring target in the image collected by the collecting device; the difference is that in the fifth case, the prompt The information includes the location of the collection device. In the fourth case, the location of the collection device is not included in the prompt information, and the server obtains the location of the collection device in advance.

The collection device carries the “own position” in the prompt information and sends it to the server, and the server determines the location of the collection device carried in the prompt information as the location of the monitoring target.

7. The prompt information sent by the collection device does not include any of the above information, and the server obtains the location of each collection device in advance; after receiving the prompt information, the server searches for the sending prompt information in the location of each acquisition device acquired in advance. The location of the collection device; the server determines the location found as the location of the monitoring target.

As an implementation manner, the collecting device may store the image if it is determined that the to-be-matched feature matches the monitoring target feature.

With this implementation manner, the collection device stores only the image including the monitoring target, and stores all the collected images compared to the collection device, or the collection device sends all the collected images to the server for storage, thereby saving storage resources.

As an implementation manner, when the collecting device determines that the to-be-matched feature matches the monitoring target feature, the image may be output to the display device, so that the monitoring target can be displayed to the user more intuitively.

As an implementation manner, the collecting device may send the image to the server if the matching feature is matched with the monitoring target feature; or the prompt information may include the image, so that the server acquires and monitors The target-related information is more abundant, and the collection device only sends the image containing the monitoring target to the server, instead of sending all the collected images to the server, saving network bandwidth.

As an implementation manner, the collecting device may send the to-be-matched feature to the server when the matching feature is matched with the monitoring target feature; or the prompt information may include the to-be-matched feature. The to-be-matched feature may include more rich content than the monitoring target feature. For example, the monitoring target feature acquired by the server includes facial features and height information, and the to-be-matched feature includes not only facial features, height information, but also target Features such as apparel wear, such that the information acquired by the server related to the monitoring target is richer; and the feature occupies less network bandwidth than the image, and only transmitting the to-be-matched feature further saves network bandwidth compared to transmitting the image.

The system can also be as shown in FIG. 2, including multiple acquisition devices (acquisition device 1, acquisition device 2, ... acquisition device N) and servers. The specific number of collection devices and servers is not limited.

Each of the collection devices may send a prompt message to the server, and after receiving the plurality of prompt information, the server may determine a location and a time corresponding to each prompt information, where the location is: the monitoring target determined according to the prompt information. Position, the time is: a time at which the prompt information is received; and a trajectory is generated as a trajectory of the monitoring target according to the position and time corresponding to each piece of prompt information.

For example, it is assumed that the collecting device 1 performs feature value extraction on the image collected by itself, obtains a feature to be matched, and determines that the to-be-matched feature matches the monitoring target feature, and the collecting device 1 sends prompt information to the server; the server receives the prompt information. The time of the monitoring is 9:00 am on July 20, and the location of the monitoring target determined by the server according to the prompt information is A;

Similarly, the server receives the prompt information sent by the collection device 2, and the time for receiving the prompt information is 9:2 am on July 20, and the location of the monitoring target determined by the server according to the prompt information is B; the server receives the collection. The prompt information sent by the device 3, the time of receiving the prompt information is 9:5 am on July 20, and the location of the monitoring target determined by the server according to the prompt information is C; the server receives the prompt information sent by the collecting device 4, The time at which the prompt information is received is 9:8 am on July 20, and the position of the monitoring target determined by the server according to the prompt information is D.

The server may generate a trajectory of the monitoring target according to the position and time corresponding to each piece of the prompt information: A→B→C→D. It can be seen that with the embodiment shown in FIG. 2, the trajectory tracking of the monitoring target can be performed by the server.

As an implementation manner, the server may further perform trajectory prediction on the monitoring target according to the trajectory of the generated monitoring target. Specifically, the moving direction and the moving speed of the monitoring target may be determined according to the generated trajectory of the monitoring target, and the trajectory prediction is performed on the monitoring target according to the moving direction and the moving speed.

For example, if the trajectory of the generated monitoring target is always moving eastward, it can be predicted that the position of the monitoring target at the next moment is still moving eastward (that is, predicting the moving direction of the monitoring target); The trajectory of the monitoring target can calculate the moving speed of the monitoring target; according to the moving direction and moving speed of the monitoring target, the subsequent trajectory of the monitoring target can be predicted.

As another example, it is assumed that the prompt information sent by the collecting device to the server carries the image of the monitoring target; after receiving the prompt information sent by the multiple collecting devices, the server analyzes the multiple images carried in the prompt information, and analyzes the result. It indicates that the monitoring target has been moving along a road, and there is no crossing at the road, and it can be predicted that the position of the monitoring target at the next moment still moves along the road (that is, predicting the moving direction of the monitoring target); In addition, according to the trajectory of the generated monitoring target, the moving speed of the monitoring target can be calculated; according to the moving direction and the moving speed of the monitoring target, the subsequent trajectory of the monitoring target can be predicted.

As an implementation manner, the trajectory tracking of multiple monitoring targets can be performed by using the embodiment shown in FIG. 2:

The server obtains multiple monitoring target features and corresponding monitoring target identifiers, and each monitoring target feature is a feature of the monitoring target; the server sends the plurality of monitoring target features and the corresponding monitoring target identifiers to the respective collecting devices;

Each acquisition device performs feature extraction on the image collected by itself, obtains a feature to be matched, and matches the to-be-matched feature with each monitoring target feature. If the matching is successful, it determines the matching monitoring target identifier and based on its own position. Determining a location of the monitoring target corresponding to the identifier; sending a prompt message to the server, where the identifier includes the identifier;

The server receives the prompt information sent by each collection device, determines the location, time, and the monitoring target identifier corresponding to each prompt information; for each monitoring target, according to the location corresponding to each prompt information including the monitoring target identifier, At the moment, a trajectory is generated as the trajectory of the monitoring target.

In this way, trajectory tracking of multiple monitoring targets is achieved. It is also possible to perform trajectory prediction on the plurality of monitoring targets by using one of the above embodiments.

The following describes the target positioning method applied to the collection device. The collection device may include: a smart terminal such as a mobile phone or a PAD, or a camera, a camera, or the like having an image processing function, which is not limited.

FIG. 3 is a schematic flowchart of a target positioning method applied to an acquisition device according to an embodiment of the present disclosure, including:

S301: Acquire a monitoring target feature.

As an embodiment, the server may send a monitoring target feature to the collection device. In this embodiment, the user can interact with the server, and the server acquires the target feature that the user needs to monitor, and delivers the feature to the collection device.

As another implementation manner, the collecting device may acquire an image including a monitoring target, perform feature extraction on the image, and obtain a monitoring target feature. In this implementation manner, the user can directly interact with the collection device, and the user sends an image including the monitoring target to the collection device, and the collection device performs feature extraction on the image to obtain a monitoring target feature.

There are many ways to extract image features, such as using color histograms, color moments, etc. to extract the color features of the image, or using statistical methods, geometric methods, model methods, etc. to extract the texture features of the image, or using boundary feature methods, geometry The parameter method, the target detection algorithm and the like extract the shape feature of the human target in the image, or use the neural network obtained by the pre-training to extract the target feature of the human target in the image, etc., and the like is not limited.

S302: Perform feature extraction on the image collected by itself to obtain a feature to be matched.

As described above, there are many ways to extract image features, and details are not described herein. It should be noted that the manner in which the monitored target feature is extracted is consistent with the manner in which the feature to be matched is extracted. For example, if the monitored target feature is extracted by using the pre-trained neural network, the same neural network may be used in S302. The image is extracted by features to obtain features to be matched.

S303: Determine whether the to-be-matched feature matches the monitoring target feature, and if yes, execute S304.

S304: Determine a location of the monitoring target based on a location of the collection device.

There are many ways to judge whether two features match. For example, the similarity between the two can be calculated. If the similarity is greater than the similarity threshold, it means that the two match, or the difference between the two can be calculated. If the difference is less than the difference The value threshold indicates that the two match, and so on. The specific matching method and the threshold setting are not limited.

If the two match, it means that the collection device collects an image that includes the monitoring target, that is, the monitoring target appears in the collection range of the collection device. Therefore, based on the location of the collection device itself, the location of the monitoring target is determined. .

The collection device determines the location of the monitoring target based on its own location, and may be in various ways, including but not limited to the following:

For example, if the acquisition device is a ball machine, the camera of the ball machine can be rotated, that is, the ball machine can be aligned in different directions for image acquisition. In this case, combined with the position of the ball machine and the field of view of the dome machine ( Which direction is aligned for image acquisition), the position of the monitored target is determined to be more accurate.

As an implementation manner, after the location of the monitoring target is determined (after S304), the collecting device can output the location of the monitoring target; thus, the user can directly obtain the location of the monitoring target from the collecting device side, and the collecting device does not need to The collected images are sent to the server for analysis and processing, which reduces the network bandwidth occupancy.

As an implementation manner, the collection device can output the location of the monitoring target and the image including the monitoring target; thus, the monitoring target can be displayed to the user more intuitively.

In addition, in this embodiment, the collecting device may store the image collected by itself only when the determination result in S303 is YES, so that all the collected images are stored compared to the collecting device, or all the images collected by the collecting device are sent. Save storage resources by saving to the server.

As an implementation manner, if the result of the determination in S303 is YES, or after S304, the collection device may send prompt information to the server, where the prompt information is used to prompt the location of the monitoring target. In this way, the server can also locate the monitoring target.

For example, the prompt information may include the location of the monitoring target determined in S304, or the prompt information may include location information of the collection device, or the prompt information may not include the information, and only The effect of the prompt.

Alternatively, the collecting device may also send an image containing the monitoring target to the server, or the prompt information may include the image, where the image includes the monitoring target; thus, the information acquired by the server related to the monitoring target is richer. Moreover, the collection device only sends the image containing the monitoring target to the server, instead of sending all the collected images to the server, saving network bandwidth.

Alternatively, the collecting device may send the to-be-matched feature to the server if the result of the determination in S303 is YES; or the prompting information may include the to-be-matched feature; the to-be-matched feature includes the monitoring target feature, such that The information acquired by the server related to the monitoring target is richer, and the feature occupies less network bandwidth than the image. Compared with the transmitted image, only sending the to-be-matched feature further saves the network bandwidth.

The server can present these information related to the monitoring target (eg, location, image, feature) to the user. In the foregoing embodiment, the user interacts with the server, the server acquires the target feature that the user needs to monitor, and delivers the feature to the collection device. In this case, the server displays the information related to the monitoring target to the user. The way is more reasonable.

The format in which the collection device sends the prompt information or the image or other information to the server may be structured information or unstructured information, and the specific information format is not limited. In addition, the collecting device may send the information to the server in real time after executing S304; or the collecting device may send the information to the server in real time if the result of the determination in S303 is YES (may not include the location of the monitoring target determined by the collecting device) Or; can also send prompt information in real time, delay sending images or features and other information, the specific transmission method is not limited.

In some embodiments, the server receives images sent by multiple acquisition devices, and the server stores the received images, and then analyzes the stored images, and locates the monitoring targets according to the analysis result; If the collecting device sends the prompt information to the server in real time after executing S304, the server can locate the monitoring target in real time; it can be seen that the server does not need to store and analyze the multi-path image in the solution, thereby improving the positioning efficiency and real-time. It is better, and the server does not store multiple images in this solution, which saves storage space.

Applying the embodiment shown in FIG. 3, the collecting device performs feature extraction on the image collected by itself, and matches the extracted feature with the monitoring target feature. When the matching is successful, the position of the monitoring target is determined based on the position thereof; In the process, the collection device analyzes and processes the image collected by itself, instead of sending all the collected images to the server for analysis and processing, thereby reducing the network bandwidth occupation rate.

The following describes the target location method applied to the server, as shown in Figure 4, including:

S401: Acquire a monitoring target feature.

As an implementation manner, the user may send an image including the monitoring target to the server, or input to the server, and the server performs feature extraction on the image to obtain a monitoring target feature. As described above, there are many ways to extract image features, and details are not described herein. It should be noted that the manner in which the server extracts the monitored target feature is consistent with the manner in which the collecting device extracts the feature to be matched.

As another implementation manner, the user may also directly send or input the monitoring target feature to the server, or the server may acquire the monitoring target feature from other devices.

S402: Send the monitoring target feature to the collecting device, so that the collecting device sends the prompting information to the server if it determines that the feature in the captured image matches the monitoring target feature.

There may be multiple acquisition devices. If there are multiple devices, the monitoring target features acquired in S401 can be sent to the multiple acquisition devices. Each acquisition device determines whether a feature in the captured image matches the monitored target feature, and if so, sends a prompt message to the server.

S403: Receive prompt information sent by the collection device, and determine a location of the monitoring target according to the prompt information.

The server determines the location of the monitoring target according to the prompt information. There may be multiple situations, including but not limited to the following, such as:

Through the embodiment shown in FIG. 4, the positioning of the monitoring target by the server is realized. As an implementation manner, the server can also perform trajectory tracking on the monitoring target:

For example, in the system shown in FIG. 2, each collection device sends a prompt message to the server, and after receiving a plurality of prompt information, the server may determine a location and a time corresponding to each prompt information, where the location is: according to the prompt The location of the monitoring target determined by the information is: a time at which the prompt information is received; and a trajectory is generated as a trajectory of the monitoring target according to the position and time corresponding to each prompt information.

As an implementation manner, the server may perform trajectory tracking on multiple monitoring targets, as shown in FIG. 5, and the method includes:

S501: Acquire each monitoring target feature and a corresponding monitoring target identifier.

S502: Send the each monitoring target feature and the corresponding monitoring target identifier to the collecting device.

Each acquisition device performs feature extraction on the image collected by itself, obtains a feature to be matched, matches the to-be-matched feature with each monitoring target feature, and if the matching is successful, determines a matching monitoring target identifier, and based on its own position, Determining the location of the monitoring target corresponding to the identifier; sending a prompt message to the server, where the identifier includes the identifier.

S503: Receive prompt information sent by each collection device, and determine a location of the monitoring target according to each received prompt information.

S504: Determine a location and a time corresponding to each piece of prompt information, and a monitoring target identifier included in each piece of prompt information. The location is: a location of the monitoring target determined according to the prompt information, where the time is: a moment when the prompt information is received.

S505: For each monitoring target, generate a trajectory as a trajectory of the monitoring target according to the position and time corresponding to each prompt information including the monitoring target identifier.

Applying the embodiment shown in FIG. 5, the trajectory tracking of the server to multiple monitoring targets is realized. It is also possible to perform trajectory prediction on the plurality of monitoring targets by using one of the above embodiments.

Corresponding to the above method embodiment, the embodiment of the present application further provides a target positioning device.

FIG. 6 is a schematic structural diagram of a target positioning apparatus applied to an acquisition device according to an embodiment of the present disclosure, including:

The first obtaining module 601 is configured to acquire a monitoring target feature, and the extracting module 602 is configured to perform feature extraction on the image collected by the self, to obtain a feature to be matched, and the determining module 603 is configured to determine the to-be-matched feature and the monitoring target. Whether the feature matches; if yes, triggering the first determining module; the first determining module 604 is configured to determine the location of the monitoring target based on the location of the collecting device.

As an implementation manner, the first obtaining module 601 may be specifically configured to: receive a monitoring target feature sent by the server; or acquire an image including the monitoring target, perform feature extraction on the image, and obtain a monitoring target feature.

As an implementation manner, the first determining module 604 may be specifically configured to: determine a location of the collection device as a location of the monitoring target; or, according to a location of the collection device, and a view of the collection device The field range determines the location of the monitoring target.

As an embodiment, the device may further include: a second determining module (not shown), configured to determine, in the case that the determining module 603 determines that the result is YES, the to-be-matched feature corresponds to the image a position in the image as a position of the monitoring target in the image; the first determining module 604 is specifically configured to: determine, according to a location of the collecting device, and a position of the monitoring target in the image The location of the monitoring target.

As an embodiment, the device may further include: an output module (not shown) for outputting a location of the monitoring target; or outputting a location of the monitoring target and the image collected by the self; Alternatively, the prompt information is sent to the server, and the prompt information is used to prompt the location of the monitoring target.

FIG. 7 is a schematic structural diagram of a target positioning apparatus applied to a server according to an embodiment of the present disclosure, including:

The second obtaining module 701 is configured to acquire a monitoring target feature, and the sending module 702 is configured to send the monitoring target feature to the collecting device, so that the collecting device determines that the feature in the captured image matches the monitoring target feature. In the case of the server, the prompt information is sent to the server; the receiving module 703 is configured to receive the prompt information; and the third determining module 704 is configured to determine the location of the monitoring target according to the prompt information.

As an implementation manner, the third determining module 704 may be specifically configured to: read a location of the monitoring target carried in the prompt information; or determine a location of the collecting device that sends the prompt information as the Monitoring the location of the target; or determining the location of the monitoring target according to the location of the collection device that sends the prompt information and the field of view; or reading the monitoring target carried in the prompt information in the image The location determines the location of the monitoring target according to the location of the monitoring target in the image and the location of the collection device that sends the prompt information.

As an embodiment, the number of the prompt information is greater than 1, the device may further include: a fourth determining module and a generating module (not shown), wherein the fourth determining module is configured to determine each prompt The location and the time corresponding to the information, the location is: the location of the monitoring target determined according to the prompt information, the time is: a time when the prompt information is received; and the generating module is configured to: according to the location corresponding to each prompt information And at the moment, a trajectory is generated as the trajectory of the monitoring target.

As an implementation manner, the apparatus may further include: a prediction module (not shown), configured to perform trajectory prediction on the monitoring target according to the trajectory of the monitoring target.

As an implementation manner, the number of the monitoring targets is greater than 1; the second acquiring module 701 may be specifically configured to: acquire each monitoring target feature and a corresponding monitoring target identifier; and send a module 702, which may be specifically used to: The collecting device sends the monitoring target feature and the corresponding monitoring target identifier; the fourth determining module may be further configured to determine a monitoring target identifier included in each prompt information; the generating module may be specifically configured to: For each monitoring target, a trajectory is generated as a trajectory of the monitoring target according to the position and time corresponding to each piece of prompt information including the monitoring target identifier.

The embodiment of the present application further provides an electronic device, as shown in FIG. 8, including a processor 801 and a memory 802, wherein the memory 802 is configured to store a computer program, and the processor 801 is configured to execute a program stored on the memory 802. The following steps are performed: acquiring a monitoring target feature; performing feature extraction on the image collected by itself to obtain a feature to be matched; determining whether the to-be-matched feature matches the monitoring target feature; and if so, based on the location of the collecting device And determining the location of the monitoring target.

As an implementation manner, the step of acquiring a monitoring target feature includes: receiving a monitoring target feature sent by the server; or acquiring an image including the monitoring target, performing feature extraction on the image, and obtaining a monitoring target feature.

As an implementation manner, the step of determining a location of the monitoring target based on a location of the collection device includes: determining a location of the collection device as a location of the monitoring target; or, according to the collecting The location of the device, and the field of view of the collection device, determine the location of the monitoring target.

As an implementation manner, the processor 801 is further configured to: when it is determined that the to-be-matched feature matches the monitoring target feature, determine that the to-be-matched feature corresponds to a location in the image, a position of the monitoring target in the image; the step of determining a location of the monitoring target based on a location of the collection device, including: according to a location of the collection device, and the monitoring target The position in the image determines the location of the monitoring target.

As an implementation manner, the processor 801 is further configured to: after the step of determining the location of the monitoring target based on the location of the acquiring device, outputting a location of the monitoring target; or Describe the location of the monitoring target and the image collected by the self; or send a prompt information to the server, the prompt information is used to prompt the location of the monitoring target.

The embodiment of the present application further provides an electronic device, as shown in FIG. 9, including a processor 901 and a memory 902, wherein the memory 902 is configured to store a computer program, and the processor 901 is configured to execute a program stored on the memory 902. When the monitoring target feature is acquired, the monitoring target feature is sent to the collecting device, so that the collecting device determines, when the feature in the captured image matches the monitoring target feature, to the server. Sending the prompt information; receiving the prompt information, and determining the location of the monitoring target according to the prompt information.

As an embodiment, the step of determining the location of the monitoring target according to the prompt information includes: reading a location of the monitoring target carried in the prompt information; or sending the prompt information The location of the collection device is determined as the location of the monitoring target; or the location of the monitoring target is determined according to the location of the collection device that sends the prompt information and the field of view; or the reading of the prompt information is carried The position of the monitoring target in the image is determined according to the position of the monitoring target in the image and the position of the collecting device that sends the prompt information.

As an implementation manner, the processor 901 is further configured to: after the step of determining the location of the monitoring target according to the prompt information, determining, after the number of the prompt information is greater than 1, a position and a time corresponding to each piece of prompt information, where the position is: a position of the monitoring target determined according to the prompt information, the time is: a time at which the prompt information is received; and a position and a time corresponding to each piece of prompt information A trajectory is generated as a trajectory of the monitoring target.

As an implementation manner, the processor 901 is further configured to: generate a trajectory as a trajectory of the monitoring target according to the position and time corresponding to each piece of prompt information, according to the monitoring target The trajectory of the trajectory prediction of the monitoring target.

As an implementation manner, the number of the monitoring target is greater than 1; the step of acquiring the monitoring target feature includes: acquiring each monitoring target feature and a corresponding monitoring target identifier; and sending the monitoring target feature to the collecting device And the step of: sending the monitoring target feature and the corresponding monitoring target identifier to the collecting device; after the step of receiving the prompting information, further comprising: determining a monitoring target identifier included in each prompt information; The step of generating a trajectory as the trajectory of the monitoring target according to the location and the time corresponding to each prompt information includes: for each monitoring target, according to the location corresponding to each prompt information including the monitoring target identifier At the moment, a trajectory is generated as the trajectory of the monitoring target.

The memory mentioned in the above electronic device may include a random access memory (RAM), and may also include a non-volatile memory (NVM), such as at least one disk storage. Optionally, the memory may also be at least one storage device located away from the aforementioned processor.

The above processor may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; or may be a digital signal processing (DSP), dedicated integration. Application Specific Integrated Circuit (ASIC), Field-Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component.

The embodiment of the present application further provides a computer readable storage medium, where the computer readable storage medium stores a computer program, and when the computer program is executed by the processor, implements any one of the foregoing target positioning methods applied to the collection device.

The embodiment of the present application further provides another computer readable storage medium, where the computer readable storage medium stores a computer program, and when the computer program is executed by the processor, implements any of the above-mentioned target positioning methods applied to the server.

The embodiment of the present application further provides an executable program code for a target positioning method that is executed to perform any of the above-described applications applied to an acquisition device.

The embodiment of the present application further provides an executable program code for a target positioning method that is executed to perform any of the above-described applications to a server.

It should be noted that, in this context, relational terms such as first and second are used merely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these entities or operations. There is any such actual relationship or order between them. Furthermore, the term "comprises" or "comprises" or "comprises" or any other variations thereof is intended to encompass a non-exclusive inclusion, such that a process, method, article, or device that comprises a plurality of elements includes not only those elements but also Other elements, or elements that are inherent to such a process, method, item, or device. An element that is defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in the process, method, item, or device that comprises the element.

The various embodiments in the present specification are described in a related manner, and the same or similar parts between the various embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the target positioning device embodiment applied to the acquisition device shown in FIG. 6, the electronic device embodiment shown in FIG. 8, the above-mentioned computer readable storage medium embodiment, and the above-described one executable program code embodiment. In other words, since it is basically similar to the embodiment of the target positioning method applied to the acquisition device shown in FIG. 3, the description is relatively simple. For related parts, refer to the part of the embodiment of the target positioning method applied to the acquisition device shown in FIG. Description can be.

For the target positioning device embodiment applied to the server shown in FIG. 7, the electronic device embodiment shown in FIG. 9, the other computer readable storage medium embodiment, and the above-described one executable program code embodiment, Since it is basically similar to the embodiment of the target positioning method applied to the server shown in FIG. 4-5, the description is relatively simple, and the relevant part refers to the part of the embodiment of the target positioning method applied to the server shown in FIG. 4-5. Description can be.

The above is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc., which are made within the spirit and principles of the present application, should be included in the present application. Within the scope of protection.

Claims

A target positioning system, comprising: an acquisition device and a server; wherein

The server is configured to acquire a monitoring target feature, and send the monitoring target feature to the collecting device;

The collecting device is configured to receive the monitoring target feature, and is further configured to collect an image, perform feature extraction on the image, obtain a feature to be matched, and determine whether the to-be-matched feature matches the monitoring target feature; Yes, based on the location of the collection device, the location of the monitoring target is determined.
The system of claim 1 wherein:

The collecting device is further configured to send prompt information to the server after determining the location of the monitoring target based on the location of the collecting device;

The server is further configured to receive the prompt information, and determine a location of the monitoring target according to the prompt information.
The system of claim 1 wherein said system includes a plurality of acquisition devices;

The collecting device is further configured to send prompt information to the server after determining the location of the monitoring target based on the location of the collecting device;

The server is further configured to receive prompt information sent by each collection device, and determine a location and a time corresponding to each prompt information, where the location is: a location of the monitoring target determined according to the prompt information, where the time is : receiving the prompt information; generating a trajectory as the trajectory of the monitoring target according to the position and time corresponding to each prompt information.
A target positioning method, which is characterized in that it is applied to an acquisition device, including:

Obtain monitoring target characteristics;

Perform feature extraction on the image collected by itself to obtain a feature to be matched;

Determining whether the to-be-matched feature matches the monitoring target feature;

If so, based on the location of the collection device, the location of the monitoring target is determined.
The method according to claim 4, wherein the step of acquiring a monitoring target feature comprises:

Receiving the monitoring target feature sent by the server;

Alternatively, an image including a monitoring target is acquired, and the image is subjected to feature extraction to obtain a monitoring target feature.
The method according to claim 4, wherein the step of determining the location of the monitoring target based on the location of the collection device comprises:

Determining a location of the collection device as a location of the monitoring target;

Or determining a location of the monitoring target according to a location of the collection device and a field of view of the collection device.
The method according to claim 4, wherein, in the case that it is determined that the to-be-matched feature matches the monitoring target feature, the method further includes:

Determining that the to-be-matched feature corresponds to a location in the image as a location of the monitoring target in the image;

The step of determining the location of the monitoring target based on the location of the collecting device includes:

A location of the monitoring target is determined based on a location of the collection device and a location of the monitoring target in the image.
The method according to claim 4, further comprising: after the step of determining the location of the monitoring target based on the location of the collecting device, further comprising:

Outputting the location of the monitoring target;

Or outputting the location of the monitoring target and the image collected by the self;

Alternatively, the prompt information is sent to the server, and the prompt information is used to prompt the location of the monitoring target.
A target positioning method, which is characterized in that it is applied to a server, including:

Obtain monitoring target characteristics;

Sending the monitoring target feature to the collecting device, so that the collecting device sends the prompting information to the server if it determines that the feature in the captured image matches the monitoring target feature;

Receiving the prompt information, and determining a location of the monitoring target according to the prompt information.
The method according to claim 9, wherein the determining the location of the monitoring target according to the prompt information comprises:

Reading the location of the monitoring target carried in the prompt information;

Or determining a location of the collection device that sends the prompt information as a location of the monitoring target;

Or determining a location of the monitoring target according to a location of the collection device that sends the prompt information and a field of view;

Or reading the position of the monitoring target carried in the prompt information in the image, determining the monitoring target according to the location of the monitoring target in the image and the location of the collecting device that sends the prompt information. position.
The method according to claim 9, wherein, after the step of determining the location of the monitoring target according to the prompt information, the method further includes:

Determining a location and a time corresponding to each piece of prompt information, where the location is: a location of the monitoring target determined according to the prompt information, where the time is: a time at which the prompt information is received;

A trajectory is generated as a trajectory of the monitoring target according to the position and time corresponding to each piece of prompt information.
The method according to claim 11, wherein after the step of generating a trajectory as the trajectory of the monitoring target according to the position and time corresponding to each piece of prompt information, the method further includes:

Performing trajectory prediction on the monitoring target according to the trajectory of the monitoring target.
The method according to claim 11, wherein the number of monitoring targets is greater than one;

The step of acquiring a monitoring target feature includes:

Obtaining each monitoring target feature and corresponding monitoring target identifier;

The step of sending the monitoring target feature to the collecting device includes:

Sending each of the monitoring target features and the corresponding monitoring target identifier to the collecting device;

After the step of receiving the prompt information, the method further includes:

Determine the monitoring target identifier included in each prompt information;

And the step of generating a trajectory as the trajectory of the monitoring target according to the location and time corresponding to each prompt information, including:

For each monitoring target, a trajectory is generated as a trajectory of the monitoring target according to the position and time corresponding to each piece of prompt information including the monitoring target identifier.
A target positioning device is characterized in that it is applied to an acquisition device, including:

a first acquiring module, configured to acquire a monitoring target feature;

An extraction module is configured to perform feature extraction on the image collected by itself to obtain a feature to be matched;

a determining module, configured to determine whether the to-be-matched feature matches the monitoring target feature; if yes, triggering the first determining module;

And a first determining module, configured to determine a location of the monitoring target based on a location of the collecting device.
The device according to claim 14, wherein the first obtaining module is specifically configured to:

Receiving the monitoring target feature sent by the server;

Alternatively, an image including a monitoring target is acquired, and the image is subjected to feature extraction to obtain a monitoring target feature.
The device according to claim 14, wherein the first determining module is specifically configured to:

Determining a location of the collection device as a location of the monitoring target;

Or determining a location of the monitoring target according to a location of the collection device and a field of view of the collection device.
The device according to claim 14, wherein the device further comprises:

a second determining module, configured to determine, in a case that the determining result of the determining module is YES, that the to-be-matched feature corresponds to a position in the image, as a position of the monitoring target in the image;

The first determining module is specifically configured to:

A location of the monitoring target is determined based on a location of the collection device and a location of the monitoring target in the image.
The device according to claim 14, wherein the device further comprises:

An output module, configured to output a location of the monitoring target;

Or outputting the location of the monitoring target and the image collected by the self;

Alternatively, the prompt information is sent to the server, and the prompt information is used to prompt the location of the monitoring target.
A target positioning device, which is applied to a server, and includes:

a second acquiring module, configured to acquire a monitoring target feature;

a sending module, configured to send the monitoring target feature to the collecting device, so that the collecting device sends the prompting information to the server if it determines that the feature in the captured image matches the monitoring target feature;

a receiving module, configured to receive the prompt information;

And a third determining module, configured to determine a location of the monitoring target according to the prompt information.
The device according to claim 19, wherein the third determining module is specifically configured to:

Reading the location of the monitoring target carried in the prompt information;

Or determining a location of the collection device that sends the prompt information as a location of the monitoring target;

Or determining a location of the monitoring target according to a location of the collection device that sends the prompt information and a field of view;

Or reading the position of the monitoring target carried in the prompt information in the image, determining the monitoring target according to the location of the monitoring target in the image and the location of the collecting device that sends the prompt information. position.
The device according to claim 19, wherein the number of the prompt information is greater than 1, the device further comprising:

a fourth determining module, configured to determine a location and a time corresponding to each piece of prompt information, where the location is: a location of the monitoring target determined according to the prompt information, where the time is: a time at which the prompt information is received;

The generating module is configured to generate a trajectory as a trajectory of the monitoring target according to the position and time corresponding to each prompt information.
The device of claim 21, wherein the device further comprises:

And a prediction module, configured to perform trajectory prediction on the monitoring target according to the trajectory of the monitoring target.
The apparatus according to claim 21, wherein said number of monitoring targets is greater than one;

The second obtaining module is specifically configured to:

Obtaining each monitoring target feature and corresponding monitoring target identifier;

The sending module is specifically configured to:

Sending each of the monitoring target features and the corresponding monitoring target identifier to the collecting device;

The fourth determining module is further configured to determine a monitoring target identifier included in each prompt information;

The generating module is specifically configured to:

For each monitoring target, a trajectory is generated as a trajectory of the monitoring target according to the position and time corresponding to each piece of prompt information including the monitoring target identifier.
An electronic device, comprising: a processor and a memory, wherein the memory is configured to store a computer program; and the processor is configured to perform the following steps when executing the program stored on the memory:

Obtain monitoring target characteristics;

Perform feature extraction on the image collected by itself to obtain a feature to be matched;

Determining whether the to-be-matched feature matches the monitoring target feature;

If so, based on the location of the collection device, the location of the monitoring target is determined.
The device according to claim 24, wherein the step of acquiring a monitoring target feature comprises:

Receiving the monitoring target feature sent by the server;

Alternatively, an image including a monitoring target is acquired, and the image is subjected to feature extraction to obtain a monitoring target feature.
The device according to claim 24, wherein the determining the location of the monitoring target based on the location of the collecting device comprises:

Determining a location of the collection device as a location of the monitoring target;

Or determining a location of the monitoring target according to a location of the collection device and a field of view of the collection device.
The device according to claim 24, wherein the processor is further configured to: if it is determined that the to-be-matched feature matches the monitoring target feature, determining that the to-be-matched feature corresponds to a position in the image as a position of the monitoring target in the image;

The step of determining the location of the monitoring target based on the location of the collecting device includes:

A location of the monitoring target is determined based on a location of the collection device and a location of the monitoring target in the image.
The device according to claim 24, wherein the processor is further configured to implement the following steps:

After the step of determining the location of the monitoring target based on the location of the collection device, outputting the location of the monitoring target; or outputting the location of the monitoring target and the image collected by itself; or The server sends a prompt message for prompting the location of the monitoring target.
An electronic device, comprising: a processor and a memory, wherein the memory is configured to store a computer program; and the processor is configured to perform the following steps when executing the program stored on the memory:

Obtain monitoring target characteristics;

Sending the monitoring target feature to the collecting device, so that the collecting device sends the prompting information to the server if it determines that the feature in the captured image matches the monitoring target feature;

Receiving the prompt information, and determining a location of the monitoring target according to the prompt information.
The device according to claim 29, wherein the step of determining the location of the monitoring target according to the prompt information comprises:

Reading the location of the monitoring target carried in the prompt information;

Or determining a location of the collection device that sends the prompt information as a location of the monitoring target;

Or determining a location of the monitoring target according to a location of the collection device that sends the prompt information and a field of view;

Or reading the position of the monitoring target carried in the prompt information in the image, determining the monitoring target according to the location of the monitoring target in the image and the location of the collecting device that sends the prompt information. position.
The device according to claim 29, wherein the processor is further configured to implement the following steps:

When the number of the prompt information is greater than 1, after the step of determining the location of the monitoring target according to the prompt information, determining a location and a time corresponding to each prompt information, where the location is: The location of the monitoring target determined by the prompt information is: a time at which the prompt information is received; and a trajectory is generated as a trajectory of the monitoring target according to the position and time corresponding to each prompt information.
The device according to claim 31, wherein the processor is further configured to implement the following steps:

And generating, according to the position and time corresponding to each piece of prompt information, a trajectory as a trajectory of the monitoring target, and performing trajectory prediction on the monitoring target according to the trajectory of the monitoring target.
The device according to claim 31, wherein the number of the monitoring targets is greater than one; and the step of acquiring the monitoring target features comprises:

Obtaining each monitoring target feature and corresponding monitoring target identifier;

The step of sending the monitoring target feature to the collecting device includes:

Sending each of the monitoring target features and the corresponding monitoring target identifier to the collecting device;

After the step of receiving the prompt information, the method further includes:

Determine the monitoring target identifier included in each prompt information;

And the step of generating a trajectory as the trajectory of the monitoring target according to the location and time corresponding to each prompt information, including:

For each monitoring target, a trajectory is generated as a trajectory of the monitoring target according to the position and time corresponding to each piece of prompt information including the monitoring target identifier.