CN113470079A - Output method and device of foot-falling area and electronic equipment - Google Patents
Output method and device of foot-falling area and electronic equipment Download PDFInfo
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- G06T7/00—Image analysis
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- G06T7/246—Analysis of motion using feature-based methods, e.g. the tracking of corners or segments
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Abstract
According to the method, the landing areas of different types can be determined based on the track data of different types of the designated object, the weight values of all the landing areas are determined according to the corresponding relation between the landing areas and the weight values, and compared with the method using track data of a single type, the method provided by the application can improve the accuracy and reliability of determining the landing areas.
Description
Technical Field
The present application relates to the field of internet of things, and in particular, to an output method and device for a foot-down area, and an electronic device.
Background
Currently, with the continuous development of social security construction and internet of things technology, the laying of various video cameras and internet of things sensing equipment is gradually improved, and the track information capable of being collected is also gradually increased. The locus information can determine the places where people often exist, namely the foot falling areas of the people.
However, the present determination method for the foot-landing area is to use a single trajectory data to complete the determination of the foot-landing area of the person, for example, to perform analysis to determine the foot-landing area of the person according to the captured image. This way of determining the person's foot-landing area using a single trajectory data results in less accuracy in determining the foot-landing area.
Disclosure of Invention
The application provides a method and a device for outputting a foot falling area and electronic equipment, which are used for determining the foot falling area of a specified object based on different types of track data fusion and improving the accuracy of determining the foot falling area.
In a first aspect, an embodiment of the present application provides a method for outputting a foot landing area, where the method includes:
acquiring N types of track data, wherein the track data is a moving track of a specified object, and N is a positive integer greater than or equal to 2;
determining a corresponding foot falling area according to the track points of each type of track number in the N types of track data;
determining an overlapped foot falling area of the intersection of each type of foot falling area according to the determined foot falling area of each type;
determining a weight score corresponding to each type of foot falling area and the overlapped foot falling area based on the corresponding relation between each type of foot falling area and the weight value;
and outputting a landing zone list containing the weight value of each type of landing zone and the weight value of the overlapping zone.
Based on the above description, in the embodiment of the present application, different types of landing areas can be determined based on different types of trajectory data of the designated object, and the weight value of each landing area is determined according to the correspondence between the landing area and the weight value.
In one possible design, determining a corresponding foot-falling region in the track point of each type of track data in the N types of track data includes:
determining track points meeting preset conditions in each type of track data, and determining the track points as foot drop points corresponding to the specified object;
and determining a foot falling area corresponding to each type of foot falling point according to each type of foot falling point.
Effective track points in the track data are screened, so that the foot-falling points corresponding to the track data are accurately determined.
In one possible design, the obtaining N types of trajectory data includes:
carrying out data cleaning on the acquired different types of track data to obtain track data meeting preset conditions;
and screening out the track data associated with the specified object from the track data obtained by data cleaning to obtain the N types of track data.
Through carrying out the data cleaning process to the orbit data of gathering to guarantee to carry out more effective and accurate definite to the foot area.
In one possible design, determining a trace point meeting a preset condition in each type of trace data, and determining the trace point as a foot drop point corresponding to the specified object includes:
obtaining the dead time of the track points in the N types of track data within a specified range;
determining whether the dead time is greater than a preset time threshold;
and if the dead time is greater than a preset time threshold value, determining the track point as a corresponding foot drop point of the specified object.
And the foot-drop points are correspondingly determined for different types of track data, so that the accuracy of the foot-drop points is ensured.
In one possible design, determining a trace point meeting a preset condition in each type of trace data, and determining the trace point as a foot drop point corresponding to the specified object includes:
acquiring the occurrence frequency of each track point in the N types of track data within a specified range;
judging whether the occurrence frequency is greater than a preset frequency threshold value or not;
if yes, determining the track points as foot falling points;
and if not, ignoring the track points.
And the foot-drop points are correspondingly determined for different types of track data, so that the accuracy of the foot-drop points is ensured.
In a second aspect, an embodiment of the present application provides an output device for a foot landing area, the device including:
the system comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring N types of track data, the track data is a moving track of a specified object, and N is a positive integer greater than or equal to 2;
the determining module is used for determining a corresponding foot falling area according to the track points of each type of track number in the N types of track data; determining an overlapped foot falling area of the intersection of each type of foot falling area according to the determined foot falling area of each type;
the processing module is used for determining weight scores corresponding to each type of foot falling area and the overlapped foot falling area based on the corresponding relation between each type of foot falling area and the weight value;
and the output module is used for outputting a landing area list containing the weight value of each type of landing area and the weight value of the overlapping area.
In one possible design, the determining module is specifically configured to determine track points meeting preset conditions in each type of track data, and determine the track points as foot-falling points corresponding to the designated object; and determining a foot falling area corresponding to each type of foot falling point according to each type of foot falling point.
In a possible design, the determining module is specifically configured to obtain dead time of a track point in the N types of track data within a specified range; determining whether the dead time is greater than a preset time threshold; and if the dead time is greater than a preset time threshold value, determining the track point as a corresponding foot drop point of the specified object.
In a third aspect, an embodiment of the present application further provides an electronic device, including:
a memory for storing a computer program;
and the processor is used for realizing the steps of the output method of the foot falling area when executing the computer program stored in the memory.
In a fourth aspect, the present application further provides a computer-readable storage medium, in which a computer program is stored, and the computer program, when executed by a processor, implements the steps of the output method for the landing area.
For each of the second to fourth aspects and possible technical effects of each aspect, please refer to the above description of the first aspect or the possible technical effects of each of the possible solutions in the first aspect, and no repeated description is given here.
Drawings
Fig. 1 is a flowchart of an output method of a landing area provided in the present application;
FIG. 2 is a schematic illustration of various types of landing areas provided herein;
FIG. 3 is a schematic structural diagram of an output device of a foot-landing area provided in the present application;
fig. 4 is a schematic structural diagram of an electronic device provided in the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clear, the present application will be further described in detail with reference to the accompanying drawings. The particular methods of operation in the method embodiments may also be applied to apparatus embodiments or system embodiments. It should be noted that "a plurality" is understood as "at least two" in the description of the present application. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. A is connected with B and can represent: a and B are directly connected and A and B are connected through C. In addition, in the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not intended to indicate or imply relative importance nor order to be construed.
The embodiments of the present application will be described in detail below with reference to the accompanying drawings.
The method for outputting the foot falling area is used for comprehensively determining the foot falling area of the personnel by different types of track data, and the determination accuracy and the reliability of the foot falling area are improved. The method and the device in the embodiment of the application are based on the same technical concept, and because the principles of the problems solved by the method and the device are similar, the device and the embodiment of the method can be mutually referred, and repeated parts are not repeated.
Referring to fig. 1, the present application provides an output method of a foot-landing area, which can implement different types of trajectory data to determine the foot-landing area of a person, and the implementation flow of the method is as follows:
s1, acquiring N types of track data;
in order to integrate various types of track data, in the embodiment of the present application, various types of track data are first obtained, where the track data may be a driving track of a vehicle, a Radio Frequency Identification (RFID) track, a mobile phone track, and the like, and in the embodiment of the present application, at least two types of track data in the above types of tracks are collected. The way of acquiring the trajectory data is not particularly limited here.
After various types of track data are acquired, due to the fact that the source of the track data is unstable or the acquisition process of track transmission is not standard, the track data is possibly incomplete or wrong, and therefore after various types of track data are acquired, data cleaning needs to be performed on the various types of track data, and the track data meeting preset conditions are obtained. The specific mode of data cleaning is as follows: and removing information which cannot form a track in the acquired track data, such as information of point position of the acquisition equipment, time disorder of data acquisition, information of which the acquired information cannot identify identity, and the like.
Through the mode, the collected track data can be accurately cleaned, so that the accurate division of the foot falling area is ensured.
S12, determining a corresponding foot falling area according to the track point of each type of track data in the N types of track data;
after the N types of track data are screened, the point location information in the track data needs to be associated with Positioning information, where the Positioning information may be Global Positioning System (GPS) information.
Based on the GPS information, track points meeting preset conditions in each type of track data are calculated, the track points meeting the preset conditions are determined as foot-falling points, and the foot-falling points are specifically determined as follows:
in a first mode
Obtaining the dead time of the track point in the designated range in the N types of track data, judging whether the dead time is greater than a preset time threshold value, if so, meeting the condition of the track point as a foot drop point, and determining the track point as the foot drop point.
For example, when the trajectory data is a vehicle driving trajectory, and the interval duration of two trajectory points before and after the vehicle driving process is greater than a duration threshold, the latter trajectory point is determined as a foot drop point.
In a possible design, in order to improve the matching degree between the track point and the foot point, when two track points exist and meet the condition of being the foot point, one track point is determined on the position between the two track points, and the determined track point is used as the foot point.
For example, in the vehicle running track, when it is collected that the interval duration of two track points in front and at the back is greater than a duration threshold value in the vehicle running process, a track point is determined at the middle position of the connecting line of the two track points, and the track point is used as a foot drop point.
In one possible design, in order to further improve the accuracy of positioning the foot-falling point, when two track points meet the condition of serving as the foot-falling point, whether the straight-line distance between the two track points is smaller than a preset distance threshold value is judged, if the straight-line distance between the two track points is smaller than the preset distance threshold value, one track point is determined at the position between the two track points, and the determined track point is used as the foot-falling point; and if the distance between the two track points is greater than the preset distance threshold value, ignoring the two track points and re-determining other track points.
Mode two
Acquiring the occurrence frequency of each track point in the N types of track data within a specified range, judging whether the occurrence frequency is greater than a preset frequency threshold value, and if so, determining the track point as a foot drop point; and if not, ignoring the track points. Wherein, the frequency of appearance is the number of times that the specified object appears in a certain area within the set time.
For example, when the track data is RFID track data, when track points in the track data frequently appear around an acquisition point, it indicates that an assigned object corresponding to the RFID track data often appears in the area, and the track points are used as foot-falling points, and if the number of the track points is large, one track point can be determined as a foot-falling point from the track points, or a central point is calculated as a foot-falling point from the track points.
For example, when the trace data is mobile phone trace data, if information of a certain MAC address exists in an acquisition period exceeding 70%, it indicates that the mobile phone frequently appears in the place and stays for a long time, and then the trace point is determined as a foot-down point.
After the track points are determined, spatial indexing processing is carried out based on the track points and the track points are expanded into one plane, as shown in fig. 2, two track points in vehicle track data in fig. 2 can be expanded into two areas, two track points in RFID track data can also be expanded into two areas, two track points in mobile phone track data can also be expanded into two areas, and at the moment, the track points corresponding to each type of track data can determine the foot falling area corresponding to the type. Fig. 2 includes a vehicle foot-off area a1 and a vehicle foot-off area a2, an RFID foot-off area b1 and an RFID foot-off area b2, a cellular phone foot-off area c1 and a cellular phone foot-off area c 2.
S13, determining the overlapping foot-falling area of the intersection of the foot-falling areas of each type according to the determined foot-falling areas of each type;
referring to fig. 2, although the landing areas of each category are different from each other, in the case that there is an overlapping intersection between the landing areas of different categories, in fig. 2, a vehicle landing area a1 overlaps with a mobile phone landing area c1, and the overlapping area is an overlapping area X shown in fig. 2. The RFID foot-down area b1 also overlaps with the vehicle foot-down area a1 and the cell phone foot-down area c1, the overlapping area being the overlapping area Y shown in fig. 2, and the RFID foot-down area b2 also overlaps with the vehicle foot-down area a2, the overlapping areas in this case need to be screened out, so that each overlapping foot-down area is obtained.
S14, determining weight scores corresponding to each type of foot falling area and the overlapped foot falling area based on the corresponding relation between each type of foot falling area and the weight value;
in the embodiment of the present application, a weight value is set for each type of landing area, that is, the reliability of each type of landing area is different according to the type, for example, the reliability of the mobile phone landing area is higher than that of the RFID landing area, the reliability of the RFID landing area is higher than that of the vehicle landing area, and if the weight value of the mobile phone landing area S1, the weight value of the RFID landing area S2, and the weight value of the vehicle landing area S3, that is, S1 is greater than S2 and is greater than S3. After each type of landing area is determined, the weight value of each type of landing area can be determined.
And the weight value corresponding to the determined overlapping foot falling area is the sum of the weight values of all types of foot falling areas. For example, referring to fig. 2, the weight value of the overlapping foot-landing area X is the sum of the weight value S3 corresponding to the vehicle foot-landing area a1 and the weight value S1 corresponding to the mobile phone foot-landing area c 1. Of course, the weight values of other overlapping regions are obtained according to the algorithm, and are not necessarily illustrated here.
S15, a landing area list containing the weight value of each landing area and the weight value of the overlap area is output.
After the above calculation of the weight values of the foot-landing areas is completed, the system arranges the weight values corresponding to each foot-landing area and each overlapped foot-landing area in the descending order, so as to generate a foot-landing area list, where the list includes the foot-landing areas and the weight values corresponding to the foot-landing areas, as shown in table 1:
| foot landing area | Weighted value |
| Overlapping landing area Y | S1+S2+S3 |
| Overlapping landing area X | S1+S3 |
| Overlapping landing zone Z | S2+S3 |
| Mobile phone feet area a1 | S1 |
| Mobile phone feet area a2 | S1 |
| RFID landing area b1 | S2 |
| RFID landing area b1 | S2 |
| Vehicle foothold area c1 | S3 |
| Vehicle foothold area c2 | S3 |
TABLE 1
Based on the above description, in the embodiment of the present application, different types of landing areas can be determined based on different types of trajectory data of the designated object, and the weight value of each landing area is determined according to the correspondence between the landing area and the weight value.
In addition, in the embodiment of the application, in order to improve the accurate positioning of the foot-landing area, the overlapped foot-landing areas of all types of foot-landing areas are obtained, and the weight values of the overlapped foot-landing areas are fused, so that the foot-landing areas can be positioned more accurately.
In a possible design, the method may be applied to a foot-down area determination process of a certain user, and if a plurality of users are required to determine a foot-down area at the same time, that is, trajectory data of the plurality of users exists in the acquired N types of trajectory data, after data cleaning, the trajectory data may be classified according to ID information of the users, that is, various types of trajectory data of the same user are put into one database for processing. Of course, the processing procedure is the same as the above method, and will not be described here. By the method, the trajectory data of different users can be processed, so that the output of the foot falling area of multiple users is realized at the same time.
Based on the same inventive concept, an embodiment of the present application further provides an output device of a foot-landing area, where the output device of the foot-landing area is used to implement determination of a foot-landing area of a specified object based on different types of trajectory data fusion, so as to improve accuracy of determination of the foot-landing area, and with reference to fig. 3, the device specifically includes:
an obtaining module 301, configured to obtain N types of track data, where the track data is a moving track of a specified object, and N is a positive integer greater than or equal to 2;
a determining module 302, configured to determine a corresponding foot falling region according to the track point of each type of track number in the N types of track data; determining an overlapped foot falling area of the intersection of each type of foot falling area according to the determined foot falling area of each type;
the processing module 303 is configured to determine, based on a correspondence between each type of landing area and the weight value, a weight score corresponding to each type of landing area and the overlapping landing area;
an output module 304, configured to output a landing zone list including a weight value of each landing zone and a weight value of an overlap zone.
In a possible design, the determining module 302 is specifically configured to determine track points that meet preset conditions in each type of track data, and determine the track points as foot-falling points corresponding to the specified object; and determining a foot falling area corresponding to each type of foot falling point according to each type of foot falling point.
In a possible design, the determining module 302 is specifically configured to obtain dead time of a track point in the N types of track data within a specified range; determining whether the dead time is greater than a preset time threshold; and if the dead time is greater than a preset time threshold value, determining the track point as a corresponding foot drop point of the specified object.
In a possible design, the determining module 302 is specifically configured to obtain an occurrence frequency of each track point in the N types of track data within a specified range; judging whether the occurrence frequency is greater than a preset frequency threshold value or not; if yes, determining the track points as foot falling points; and if not, ignoring the track points.
Based on the above device, in the embodiment of the application, the landing areas of different types can be determined based on the trajectory data of different types of the designated object, the weight values of the landing areas are determined according to the corresponding relationship between the landing areas and the weight values, and compared with the method using the trajectory data of a single type, the method provided by the application can improve the accuracy and reliability of determining the landing areas.
Based on the same inventive concept, an embodiment of the present application further provides an electronic device, where the electronic device can implement the function of the output device in the foot falling area, and with reference to fig. 4, the electronic device includes:
at least one processor 401 and a memory 402 connected to the at least one processor 401, in this embodiment, a specific connection medium between the processor 401 and the memory 402 is not limited in this application, and fig. 4 illustrates an example in which the processor 401 and the memory 402 are connected by a bus 400. The bus 400 is shown in fig. 4 by a thick line, and the connection manner between other components is merely illustrative and not limited thereto. The bus 400 may be divided into an address bus, a data bus, a control bus, etc., and is shown with only one thick line in fig. 4 for ease of illustration, but does not represent only one bus or type of bus. Alternatively, processor 401 may also be referred to as a controller, without limitation to name a few.
In the embodiment of the present application, the memory 402 stores instructions executable by the at least one processor 401, and the at least one processor 401 can execute the output method of the landing zone discussed above by executing the instructions stored in the memory 402. The processor 401 may implement the functions of the various modules in the apparatus shown in fig. 4.
The processor 401 is a control center of the apparatus, and may connect various parts of the entire control device by using various interfaces and lines, and perform various functions and process data of the apparatus by operating or executing instructions stored in the memory 402 and calling data stored in the memory 402, thereby performing overall monitoring of the apparatus.
In one possible design, processor 401 may include one or more processing units and processor 401 may integrate an application processor that handles primarily operating systems, user interfaces, application programs, and the like, and a modem processor that handles primarily wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 401. In some embodiments, processor 401 and memory 402 may be implemented on the same chip, or in some embodiments, they may be implemented separately on separate chips.
The processor 401 may be a general-purpose processor, such as a Central Processing Unit (CPU), digital signal processor, application specific integrated circuit, field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like, that may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the output method of the footfall area disclosed in the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.
By programming the processor 401, the code corresponding to the output method of the foot-down area described in the foregoing embodiment may be solidified into the chip, so that the chip can execute the steps of the output method of the foot-down area of the embodiment shown in fig. 3 when running. How to program the processor 401 is well known to those skilled in the art and will not be described in detail herein.
Based on the same inventive concept, the present application further provides a storage medium storing computer instructions, which when executed on a computer, cause the computer to perform the output method of the landing area discussed above.
In some possible embodiments, the aspects of the output method of the foot-down area provided by the present application may also be implemented in the form of a program product comprising program code means for causing a control device to carry out the steps of the output method of the foot-down area according to various exemplary embodiments of the present application described above in this specification, when the program product is run on an apparatus.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. A method of outputting a landing area, the method comprising:
acquiring N types of track data, wherein the track data is a moving track of a specified object, and N is a positive integer greater than or equal to 2;
determining a corresponding foot falling area according to the track points of each type of track number in the N types of track data;
determining an overlapped foot falling area of the intersection of each type of foot falling area according to the determined foot falling area of each type;
determining a weight score corresponding to each type of foot falling area and the overlapped foot falling area based on the corresponding relation between each type of foot falling area and the weight value;
and outputting a landing zone list containing the weight value of each type of landing zone and the weight value of the overlapping zone.
2. The method of claim 1, wherein determining the corresponding foot-falling region according to the track points of each type of track number in the N types of track data comprises:
determining track points meeting preset conditions in each type of track data, and determining the track points as foot drop points corresponding to the specified object;
and determining a foot falling area corresponding to each type of foot falling point according to each type of foot falling point.
3. The method of claim 1, wherein the obtaining N types of trajectory data comprises:
carrying out data cleaning on the acquired different types of track data to obtain track data meeting preset conditions;
and screening out the track data associated with the specified object from the track data obtained by data cleaning to obtain the N types of track data.
4. The method according to claim 2, wherein determining track points satisfying a preset condition in each type of track data, and determining the track points as foot-falling points corresponding to the designated object comprises:
obtaining the dead time of the track points in the N types of track data within a specified range;
determining whether the dead time is greater than a preset time threshold;
and if the dead time is greater than a preset time threshold value, determining the track point as a corresponding foot drop point of the specified object.
5. The method according to claim 2, wherein determining track points satisfying a preset condition in each type of track data, and determining the track points as foot-falling points corresponding to the designated object comprises:
acquiring the occurrence frequency of each track point in the N types of track data within a specified range;
judging whether the occurrence frequency is greater than a preset frequency threshold value or not;
if yes, determining the track points as foot falling points;
and if not, ignoring the track points.
6. An output device for a landing area, the device comprising:
the system comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring N types of track data, the track data is a moving track of a specified object, and N is a positive integer greater than or equal to 2;
the determining module is used for determining a corresponding foot falling area according to the track points of each type of track number in the N types of track data; determining an overlapped foot falling area of the intersection of each type of foot falling area according to the determined foot falling area of each type;
the processing module is used for determining weight scores corresponding to each type of foot falling area and the overlapped foot falling area based on the corresponding relation between each type of foot falling area and the weight value;
and the output module is used for outputting a landing area list containing the weight value of each type of landing area and the weight value of the overlapping area.
7. The device according to claim 6, wherein the determining module is specifically configured to determine track points that satisfy a preset condition in each type of track data, and determine the track points as foot-landing points corresponding to the designated object; and determining a foot falling area corresponding to each type of foot falling point according to each type of foot falling point.
8. The device according to claim 7, wherein the determining module is specifically configured to obtain dead time of a track point in the N types of track data within a specified range; determining whether the dead time is greater than a preset time threshold; and if the dead time is greater than a preset time threshold value, determining the track point as a corresponding foot drop point of the specified object.
9. An electronic device, comprising:
a memory for storing a computer program;
a processor for implementing the method steps of any one of claims 1-5 when executing the computer program stored on the memory.
10. A computer-readable storage medium, characterized in that a computer program is stored in the computer-readable storage medium, which computer program, when being executed by a processor, carries out the method steps of any one of claims 1-5.
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