CN115174850A - Target path tracking system and method based on camera shooting linkage - Google Patents
Target path tracking system and method based on camera shooting linkage Download PDFInfo
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- CN115174850A CN115174850A CN202210402764.8A CN202210402764A CN115174850A CN 115174850 A CN115174850 A CN 115174850A CN 202210402764 A CN202210402764 A CN 202210402764A CN 115174850 A CN115174850 A CN 115174850A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
Abstract
The invention belongs to the technical field of target tracking, and provides a target path tracking system and a target path tracking method based on camera linkage, which comprises a server and a plurality of cameras, wherein the server comprises a feature identification module and a path tracking module, and the feature identification module is used for acquiring the features of an object to be detected according to the picture of the current camera; the path tracking module is used for comparing the characteristics of the object to be detected with the reference characteristics, judging whether the current object to be detected is a target object, if so, analyzing the number of the target objects, adopting a corresponding tracking strategy to track the target objects according to the number of the target objects, obtaining videos of the target objects appearing in all camera pictures, splicing the videos to obtain a complete moving path of the target objects, and has a camera linkage function.
Description
Technical Field
The invention belongs to the technical field of target tracking, and particularly relates to a target path tracking system and method based on camera linkage.
Background
The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
In the prior art, the Positioning of the relevant personnel of the transformer substation is performed through a GPS (Global Positioning System) or a UWB (Ultra wide band) and then a personnel traveling route is drawn, but the following problems exist when the Positioning is performed through the GPS or the UWB:
1. the equipment with the GPS positioning function needs to be used in an open and shelterless place, and indoor positioning or positioning of poor signals of personnel or vehicles in a transformer substation cannot be carried out.
2. UWB positioning requires wide coverage of base stations, investment is large, and resource waste is easily caused.
Disclosure of Invention
In order to solve at least one technical problem in the background art, the present invention provides a target path tracking system and method based on camera linkage, which can set a tracking object by identifying the identity of a person or a vehicle entering a camera shooting range in real time, track the object in the camera shooting range, and have a camera linkage function.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a target path tracking system based on camera shooting linkage, which comprises a server and a plurality of cameras, wherein the server comprises a feature identification module and a path tracking module;
the characteristic identification module is used for acquiring the characteristics of the object to be detected according to the current picture of the camera;
the path tracking module is used for comparing the characteristics of the object to be detected with the reference characteristics, judging whether the current object to be detected is a target object, if so, analyzing the number of the target objects, adopting a corresponding tracking strategy to track the target objects according to the number of the target objects, obtaining videos of the target objects appearing on all camera pictures, and splicing the videos to obtain a complete moving path of the target objects.
A second aspect of the present invention provides a target path tracking method based on camera shooting linkage, including the steps of:
acquiring the characteristics of an object to be detected;
comparing the characteristics of the object to be detected with the reference characteristics, judging whether the current object to be detected is a target object, if so, analyzing the number of the target objects, tracking the target objects by adopting a corresponding tracking strategy according to the number of the target objects to obtain videos of the target objects appearing in all camera pictures, and splicing the videos to obtain a complete moving path of the target objects.
Compared with the prior art, the invention has the beneficial effects that:
the invention carries out real-time video tracking on personnel and vehicles in the substation through the existing camera of the substation, realizes the full-path video tracking and path tracking of the set object through the camera linkage function, can set the tracked object through identifying the identity of the personnel and the vehicles entering the shooting range in real time, tracks the object in the shooting range of the camera, has the camera linkage function, and can automatically identify and continue to track until the set object leaves the shooting range when a target object moves out of the current shooting range of the camera and enters another shooting range of the camera, thereby displaying the position of the set object in a map in real time.
The video splicing system has the function of splicing the video of the set object, and can splice the videos of the set object in different cameras to obtain evidence of the whole-course record of the advancing route and the behavior of personnel or vehicles. Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are included to illustrate an exemplary embodiment of the invention and not to limit the invention.
FIG. 1 is a block diagram of a target path tracking system based on camera linkage according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating a first embodiment of tracking center point positions for a plurality of target objects;
FIG. 3 is a schematic diagram of tracking a target object according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of tracking multiple target objects according to an embodiment of the present invention;
fig. 5 is a flowchart of a target path tracking method based on camera linkage according to a second embodiment of the present invention.
Detailed Description
The invention is further described with reference to the following figures and examples.
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Example one
As shown in fig. 1, the present embodiment provides a target path tracking system based on camera linkage, which includes a server and a plurality of cameras, where the server includes a feature identification module and a path tracking module;
the characteristic identification module is used for acquiring the characteristics of the object to be detected according to the current picture of the camera;
the path tracking module is used for comparing the characteristics of the object to be detected with the reference characteristics, judging whether the current object to be detected is a target object, if so, analyzing the number of the target objects, tracking the target objects by adopting corresponding tracking strategies according to the number of the target objects to obtain videos of the target objects appearing on all camera pictures, and splicing the videos to obtain a complete moving path of the target objects.
As one or more embodiments, in the path tracking module, tracking the target object by using a corresponding tracking policy according to the number of the target objects specifically includes:
determining the position for controlling the camera to track according to the number of the target objects;
analyzing the moving direction of the target object by using an image contrast technology according to a picture returned by the camera;
and controlling the rotation direction of the camera to keep the target object within the monitoring range of the camera picture based on the tracked position and the moving direction of the target object.
As shown in fig. 2, as one or more embodiments, the determining a position for controlling tracking of a camera according to the number of target objects includes:
if only one target object exists, controlling the camera to track the position of the current target object;
if two target objects are available, controlling the camera to track the position of the central line according to the central line of the connecting line of the two target objects;
if the number of the target objects is larger than two, the center point of the polygon with the largest area is calculated according to the polygon formed by the target objects, and the camera is controlled to track the position of the center point.
As one or more embodiments, when the number of target objects is greater than two and the target objects move in different directions, grouping the target objects moving in different directions by image analysis, and calculating the target number of each group; and comparing the number of the grouped targets, adopting the group with the largest number of the targets monitored and tracked by the current camera, and calling other cameras by other groups through inquiring a camera position relation table to monitor and track.
As one or more embodiments, if the current camera has a task being tracked, the priority of the target object being tracked is judged, and if the priority of the target object being tracked is higher than that of the target group to be tracked, the target group to be tracked is abandoned; if the priorities are the same, tracking the target groups with large number, if the two groups of targets have the same number, abandoning the target groups with large tracking number, and continuing to track the original target object.
As one or more embodiments, when the videos are spliced, the starting time and the ending time of the target object appearing in each camera picture are recorded, and the camera pictures within the time period of the starting time and the ending time are taken to be spliced to obtain the complete moving path video of the target object.
In one or more embodiments, the camera position relationship table is obtained by numbering cameras in the substation according to the phase position relationship of the cameras with different numbers.
The target objects comprise substation personnel and vehicles, the number of the substation personnel is obtained through face recognition, and the number of the vehicles is obtained through a license plate recognition technology.
As shown in fig. 3, taking only one target object as an example, when the target object moves from the camera No. 1 to the camera No. 2, by analyzing the image returned by the camera No. 1, it can be analyzed by using an image contrast technique that the target object is moving from the right side to the left side of the picture of the camera No. 1, and the background service controls the camera No. 1 to rotate to the left side to keep the set object in the monitoring picture.
When the target object leaves a picture range which can be monitored by the camera No. 1, the background controls the camera No. 1 to return to the original position, the position relation table of the camera No. 1 is searched to control the next camera, namely the camera No. 2, the direction of the camera No. 2 rotates rightwards, whether the object entering the picture range is the target object is judged, if the object is the target object, the camera No. 2 is controlled according to the logic of the camera No. 1, and if the object is not the target object, the object returns to the original position after waiting for a set time.
If the target object continues to move, the control principle of the next camera is the same as the principle.
As shown in fig. 4, taking a plurality of target objects as an example, when a plurality of targets in the picture move to the left and right directions, the target objects are divided into a group a and a group B by the image analysis technique, wherein the group a moves to the left of the video picture and the group B moves to the right of the video picture;
counting that the number of the group A is smaller than that of the group B by a face recognition technology and a license plate recognition technology; the camera monitors the groups with a large number of tracking targets, namely the group B, the background service calculates the central position of a polygon formed by the group B objects, and the group B starts to be tracked;
inquiring the camera number on the left side of the group B of monitoring cameras according to the camera position relation table, and then controlling the camera to rotate to monitor and track the group A of target objects;
if the camera has a task being tracked, preferentially judging the priority of the target object being tracked, and if the priority of the target object being tracked is higher than or equal to the group A, giving up tracking the group A target; and tracking the target groups with larger number when the priorities are the same, and abandoning tracking the group A and continuing tracking the original target if the two groups of targets have the same number.
The existing cameras of the transformer substation are used for carrying out real-time video tracking on personnel and vehicles in the transformer substation, and the camera linkage function is used for achieving set object full-path video tracking and path tracking.
Example two
As shown in fig. 5, the present embodiment provides a target path tracking method based on camera shooting linkage, including the following steps:
s101, acquiring the characteristics of an object to be detected;
and S102, comparing the characteristics of the object to be detected with the reference characteristics, judging whether the current object to be detected is a target object, if so, analyzing the number of the target objects, tracking the target objects by adopting a corresponding tracking strategy according to the number of the target objects to obtain videos of the target objects appearing in all camera pictures, and splicing the videos to obtain a complete moving path of the target objects.
As one or more embodiments, in S102, the tracking the target object by using the corresponding tracking policy according to the number of the target objects specifically includes:
determining the position for controlling the camera to track according to the number of the target objects;
analyzing the moving direction of the target object by using an image contrast technology according to a picture returned by the camera;
and controlling the rotation direction of the camera to keep the target object within the monitoring range of the camera picture based on the tracked position and the moving direction of the target.
The determining the position for controlling the camera to track according to the number of the target objects comprises:
if only one target object exists, controlling a camera to track the position of the current target object;
if two target objects are available, controlling the camera to track the position of the central line according to the central line of the connecting line of the two target objects;
if the number of the target objects is larger than two, the center point of the polygon with the largest area is calculated according to the polygon formed by the target objects, and the camera is controlled to track the position of the center point.
The existing cameras of the transformer substation are used for carrying out real-time video tracking on personnel and vehicles in the transformer substation, and the camera linkage function is used for achieving set object full-path video tracking and path tracking.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A target path tracking system based on camera shooting linkage is characterized by comprising a server and a plurality of cameras, wherein the server comprises a feature identification module and a path tracking module;
the characteristic identification module is used for acquiring the characteristics of the object to be detected according to the current picture of the camera;
the path tracking module is used for comparing the characteristics of the object to be detected with the reference characteristics, judging whether the current object to be detected is a target object, if so, analyzing the number of the target objects, adopting a corresponding tracking strategy to track the target objects according to the number of the target objects, obtaining videos of the target objects appearing on all camera pictures, and splicing the videos to obtain a complete moving path of the target objects.
2. The system for tracking the target path based on the camera shooting linkage according to claim 1, wherein the path tracking module tracks the target object by adopting a corresponding tracking strategy according to the number of the target objects, and specifically comprises:
determining the position for controlling the camera to track according to the number of the target objects;
analyzing the moving direction of the target object by using an image contrast technology according to a picture returned by the camera;
and controlling the rotation direction of the camera to keep the target object within the monitoring range of the camera picture based on the tracked position and the moving direction of the target.
3. The camera-linkage-based target path tracking system of claim 2, wherein the determining the position for controlling the camera to track according to the number of target objects comprises:
if only one target object exists, controlling the camera to track the position of the current target object;
if two target objects are available, controlling the camera to track the position of the central line according to the central line of the connecting line of the two target objects;
if the number of the target objects is larger than two, the center point of the polygon with the largest area is calculated according to the polygon with the largest area formed by the target objects, and the camera is controlled to track the position of the center point.
4. The system for tracking the target path based on the camera shooting linkage according to claim 3, wherein if the number of the target objects is larger than two, the target objects moving in different directions are grouped by image analysis when the target objects move in different directions, and the number of the targets in each group is calculated; and comparing the number of the grouped targets, adopting the group with the largest number of the targets monitored and tracked by the current camera, and calling other cameras by other groups through inquiring a camera position relation table to monitor and track.
5. The target path tracking system based on camera shooting linkage as claimed in claim 4, wherein the camera position relation table is obtained by numbering cameras in a substation according to the phase position relation of the cameras with different numbers.
6. The system for tracking the target path based on the camera shooting linkage as claimed in claim 4, wherein if the current camera has a task being tracked, the priority of the target object being tracked is judged, and if the priority of the target object being tracked is higher than that of the target group to be tracked, the target group to be tracked is abandoned; if the priorities are the same, tracking the target groups with large number, if the two groups of targets have the same number, abandoning the target groups with large tracking number, and continuing to track the original target object.
7. The camera-linkage-based target path tracking system of claim 1, wherein the target objects comprise substation personnel and vehicles, the number of the substation personnel is obtained through face recognition, and the number of the vehicles is obtained through license plate recognition technology.
8. A target path tracking method based on camera shooting linkage is characterized by comprising the following steps:
acquiring the characteristics of an object to be detected;
comparing the characteristics of the object to be detected with the reference characteristics, judging whether the current object to be detected is a target object, if so, analyzing the number of the target objects, tracking the target objects by adopting a corresponding tracking strategy according to the number of the target objects to obtain videos of the target objects appearing in all camera pictures, and splicing the videos to obtain a complete moving path of the target objects.
9. The method for tracking the target path based on the camera shooting linkage according to claim 8, wherein the tracking the target object by adopting a corresponding tracking strategy according to the number of the target objects specifically comprises:
determining the position for controlling the camera to track according to the number of the target objects;
analyzing the moving direction of the target object by using an image contrast technology according to the picture returned by the camera;
and controlling the rotation direction of the camera to keep the target object within the monitoring range of the camera picture based on the tracked position and the moving direction of the target.
10. The method for tracking the target path based on the camera shooting linkage as claimed in claim 8, wherein the determining the position for controlling the camera to track according to the number of the target objects comprises:
if only one target object exists, controlling a camera to track the position of the current target object;
if two target objects are available, controlling the camera to track the position of the central line according to the central line of the connecting line of the two target objects;
if the number of the target objects is larger than two, the center point of the polygon with the largest area is calculated according to the polygon formed by the target objects, and the camera is controlled to track the position of the center point.
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| CN202210402764.8A CN115174850A (en) | 2022-04-18 | 2022-04-18 | Target path tracking system and method based on camera shooting linkage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116866534A (en) * | 2023-09-05 | 2023-10-10 | 南京隆精微电子技术有限公司 | Processing method and device for digital video monitoring system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116866534A (en) * | 2023-09-05 | 2023-10-10 | 南京隆精微电子技术有限公司 | Processing method and device for digital video monitoring system |
| CN116866534B (en) * | 2023-09-05 | 2023-11-28 | 南京隆精微电子技术有限公司 | Processing method and device for digital video monitoring system |
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