CN113688679A - Key personnel prevention, control and early warning method - Google Patents

Abstract

The invention discloses a method for preventing, controlling and early warning key personnel, which comprises the steps of 1, loading information of arranged prevention and control points P, 2, presetting a normal trajectory line array A of a certain key personnel, 3, and if the normal trajectory line array A is positioned at the prevention and control points P_xIdentifying the image of the key personnel, uploading the image of the key personnel and the occurrence prevention and control point P through the terminal_xAnd processing the information, and sending an early warning message to the abnormal condition. The method can reduce a large amount of manpower input, accurately judge whether the personnel track is abnormal or not, and improve the early warning accuracy.

Description

Key personnel prevention, control and early warning method

Technical Field

The invention relates to the field of data processing and image recognition research, in particular to a method for prevention, control and early warning of key personnel.

Background

In case treatment day-to-day work, except for normal case reception and treatment. And the personnel who visit many times or maliciously visit need to be prevented and controlled, so that the personnel can be prevented from taking a series of behaviors which disturb normal working order, such as override, overstimulation and the like. The traditional prevention and control mode is that a monitoring probe is installed in a residence or a working unit of an applicant, a specially-assigned person is dispatched to monitor, a many-to-one manual staring mode is adopted, the mental state of key personnel is required to be observed at any time to judge whether the key personnel can make an overstimulation behavior, and the key personnel can conduct persuasion before serious consequences occur, so that a large amount of manpower and material resources are wasted, meanwhile, the travel track of the applicant is difficult to monitor, and the real-time early warning is achieved for some abnormal behaviors without a method.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a method for preventing, controlling and early warning of key personnel, which can reduce a large amount of manpower input, accurately judge whether the personnel track is abnormal and improve the early warning accuracy.

The technical scheme is as follows:

the invention provides a method for preventing, controlling and early warning key personnel, which comprises the following steps:

step 1, loading information of the arranged prevention and control points P, wherein the information comprises longitude and latitude of the prevention and control points, red and green identification of the prevention and control points, position types of the prevention and control points, directions monitored by the prevention and control points and the like; when the prevention and control point is positioned at the key position or the sensitive position, the red and green marks of the prevention and control point are red, otherwise, the prevention and control point is green; if key personnel appear in the prevention and control points with red and green marks, early warning information needs to be sent.

Step 2, presetting a normal trajectory line array A of a certain key person, wherein the specific setting method comprises the following steps:

selecting a plurality of points a of daily activities of the key personnel₁、a₂、a₃…, forming a plurality of normal trajectory lines according to the daily activity sequence, namely forming an important person normal trajectory line array A, wherein the normal trajectory lines can not form a loop.

Step 3, if the point is at the prevention and control point P_xIdentifying the image of the key personnel, uploading the image of the key personnel and the occurrence prevention and control point P through the terminal_xThe uploaded information is processed as follows:

judging whether the key personnel has a track line array D of the day:

if not, then newly building track line array D, and controlling point P_xDot as trajectory line D₁Head node d of₁₁I.e. D₁The first node of (a);

if the array of the trajectory line D { D } of the current day already exists₁(d₁₁-d₁₂-d₁₃-……)、D₂(d₂₁-d₂₂-d₂₃-……)……D_n(d_n1-d_n2-d_n3-……) }, the prevention and control point P is set_xAdding the data into a trajectory line array D, specifically: take the latest trajectory line D_nObtaining a trajectory line D_nTail node d of_niI.e. trajectory line D_nThe last node of (2), the judgment prevention and control point P_xAnd tail node d_niIf the distance is less than R, the prevention and control point P is set_xAdding trajectory line D_nIn, and update P_xIs D_nThe tail node of (1); if not, a new trajectory line D is created for the key personnel_n+1And is provided with P_xIs D_n+1The head node of (1).

Judging prevention and control point P_xWhether the red and green marks are red or not is judged, if yes, an early warning message is directly sent;

if the point P is controlled_xThe red and green marks are green, and the prevention and control point P is further judged_xIf the action of the uploading event needs long-term monitoring, updating the key personnel monitoring queue, and monitoring the key personnel for a long time, if the action does not need long-term monitoring, then monitoring the key personnel for a long time; and acquiring the trace lines with the trace point number exceeding a threshold value N in the trace line array D, respectively carrying out similarity calculation on the trace lines with the trace lines in the normal trace line array A, wherein the trace points with the trace point number exceeding the threshold value N are respectively subjected to similarity calculation, and when the similarity is smaller than a certain threshold value, sending an early warning message.

Preferably, the information of the prevention and control point P in step 1 is information of a corresponding image recognition camera.

Preferably, the further judgment of the prevention and control point P in the step 3_xWhether the action of uploading the event needs long-term monitoring is determined according to the type of the prevention and control point and the monitored direction information.

Preferably, the threshold N in step 3 is determined according to the number of normal track points of the key person.

Preferably, in step 3, the similarity calculation is performed between the trace line with the number of each trace point exceeding the threshold N and the trace line in the normal trace line array a, and when the similarity is smaller than a certain threshold, an early warning message is sent, and instead, the judgment is performed according to the discrete Frechet distance, specifically:

setting the number of trace points in a trace line array D exceeding a threshold value N as H, setting the number of trace points in an array A as Q, and setting the H to be composed of H trace points and the Q to be composed of Q trace points;

using sigma (H) ═ u₁,u₂,u₃…u_h)，σ(Q)＝(v₁,v₂,v₃…v_q) Respectively representing a sequential set of two trace points. The following sequence point pairs L can be obtained:

wherein a is₁＝1,b₁＝1,a_m＝h,b_mQ, with a for any i 1_i+1＝a_iOr a_i+1＝a_i+1 and b_i+1＝b_i。

H. The length L between the sequence pairs between the Q trace points is defined as the maximum value of the euclidean distance in each sequence pair, that is:

then the discrete Frechet distance is expressed as follows: delta_dF(H,Q)＝min(||L||)。

Calculating the discrete Frechet distance between the curve meeting the conditions in the D and all the curves in the A, and taking s-min (delta)_dF(H, Q)) is the minimum Frechet distance of the key personnel, whether the minimum Frechet distance s is larger than a threshold value M or not is judged, and if yes, an early warning message is sent.

Compared with the prior art, one of the technical schemes has the following beneficial effects: through image recognition, the positions of key personnel are accurately monitored, a track line array is established for the key personnel, a plurality of normal track paths are set for the key personnel, and early warning is timely carried out if actions deviating from normal tracks appear through comparison. A large amount of human input is reduced, whether the staff track is abnormal or not is accurately judged, and the early warning accuracy is improved.

Drawings

Fig. 1 is a flow chart of prevention, control and early warning for key personnel according to an embodiment of the disclosure.

Detailed Description

In order to clarify the technical solution and the working principle of the present invention, the embodiments of the present disclosure will be described in further detail with reference to the accompanying drawings. All the above optional technical solutions may be combined arbitrarily to form the optional embodiments of the present disclosure, and are not described herein again.

The method for preventing, controlling and early warning key personnel provided by the embodiment of the disclosure comprises the following steps:

step 1, loading information of the arranged prevention and control points P, wherein the information comprises longitude and latitude of the prevention and control points, red and green identification of the prevention and control points, position types of the prevention and control points, directions monitored by the prevention and control points and the like; when the prevention and control point is positioned at the key position or the sensitive position, the red and green marks of the prevention and control point are red, otherwise, the prevention and control point is green; if key personnel appear in the prevention and control points with red and green marks, early warning information needs to be sent.

Preferably, the information of the prevention and control point P in step 1 is information of a corresponding image recognition camera.

Step 2, presetting a normal trajectory line array A of a certain key person, wherein the specific setting method comprises the following steps:

selecting a plurality of points a of daily activities of the key personnel₁、a₂、a₃…, forming a plurality of normal trajectory lines according to the daily activity sequence, namely forming an important person normal trajectory line array A, wherein the normal trajectory lines can not form a loop.

Step 3, if the point is at the prevention and control point P_xIdentifying the image of the key personnel, uploading the image of the key personnel and the occurrence prevention and control point P through the terminal_xThe uploaded information is processed as follows.

Judging whether the key personnel has a track line array D of the day:

if not, then newly building track line array D, and controlling point P_xDot as trajectory line D₁Head node d of₁₁I.e. D₁The first node of (1).

If the array of the trajectory line D { D } of the current day already exists₁(d₁₁-d₁₂-d₁₃-……)、D₂(d₂₁-d₂₂-d₂₃-……)……D_n(d_n1-d_n2-d_n3… …), the prevention and control point P is set_xAdding the data into a trajectory line array D, specifically: take the latest trajectory line D_nObtaining a trajectory line D_nTail node d of_niI.e. trajectory line D_nThe last node of (2), the judgment prevention and control point P_xAnd tail node d_niIf the distance is less than R, the prevention and control point P is set_xAdding trajectory line D_nIn, and update P_xIs D_nThe tail node of (1); if not, a new trajectory line D is created for the key personnel_n+1And is provided with P_xIs D_n+1The head node of (1).

Judging prevention and control point P_xAnd if the red and green marks are red, the early warning message is directly sent.

If the point P is controlled_xThe red and green marks are green, and the prevention and control point P is further judged_xIf the action of the uploading event needs long-term monitoring, updating the key personnel monitoring queue, and monitoring the key personnel for a long time, if the action does not need long-term monitoring, then monitoring the key personnel for a long time; and acquiring the trace lines with the trace point number exceeding a threshold value N in the trace line array D, respectively carrying out similarity calculation on the trace lines with the trace lines in the normal trace line array A, wherein the trace points with the trace point number exceeding the threshold value N are respectively subjected to similarity calculation, and when the similarity is smaller than a certain threshold value, sending an early warning message.

Preferably, the further judgment of the prevention and control point P in the step 3_xWhether the action of uploading the event needs long-term monitoring is determined according to the type of the prevention and control point and the monitored direction information. Such as: when a key person is present at a prevention and control point of a residential area type and enters a door, whether the key person has a long-term home condition needs to be monitored. The abnormal state of key personnel is pre-judged through long-term monitoring of actions such as home, leaving, departure and the like, and the personnel is informed to investigate in time.

Preferably, the threshold N in step 3 is determined according to the number of normal track points of the key person.

Preferably, in step 3, the similarity calculation is performed between the trace line with the number of each trace point exceeding the threshold N and the trace line in the normal trace line array a, and when the similarity is smaller than a certain threshold, an early warning message is sent, and instead, the judgment is performed according to the discrete Frechet distance, specifically:

the trajectory line that trajectory point quantity surpassed threshold value N in the trajectory line array D is set for H, and the trajectory line in array A is Q, and it has H trajectory point to constitute to set up H, and Q has Q trajectory point to constitute.

Using sigma (H) ═ u₁,u₂,u₃…u_h)，σ(Q)＝(v₁,v₂,v₃…v_q) Respectively representing a sequential set of two trace points. The following sequence point pairs L can be obtained:

wherein a is₁＝1,b₁＝1,a_m＝h,b_mQ, with a for any i 1_i+1＝a_iOr a_i+1＝a_i+1 and b_i+1＝b_i。

H. The length L between the sequence pairs between the Q trace points is defined as the maximum value of the euclidean distance in each sequence pair, that is:

then the discrete Frechet distance is expressed as follows: delta_dF(H,Q)＝min(||L||)。

Calculating the discrete Frechet distance between the curve meeting the conditions in the D and all the curves in the A, and taking s-min (delta)_dF(H, Q)) is the minimum Frechet distance of the key personnel, whether the minimum Frechet distance s is larger than a threshold value M or not is judged, and if yes, an early warning message is sent.

The invention has been described above by way of example with reference to the accompanying drawings, it being understood that the invention is not limited to the specific embodiments described above, but is capable of numerous insubstantial modifications when implemented in accordance with the principles and solutions of the present invention; or directly apply the conception and the technical scheme of the invention to other occasions without improvement and equivalent replacement, and the invention is within the protection scope of the invention.

Claims (5)

1. A method for preventing, controlling and early warning key personnel is characterized by comprising the following steps:

step 1, loading information of the arranged prevention and control points P, wherein the information comprises longitude and latitude of the prevention and control points, red and green identification of the prevention and control points, position types of the prevention and control points, directions monitored by the prevention and control points and the like; when the prevention and control point is positioned at the key position or the sensitive position, the red and green marks of the prevention and control point are red, otherwise, the prevention and control point is green; if key personnel appear in the prevention and control points with red and green marks, early warning information needs to be sent;

step 2, presetting a normal trajectory line array A of a certain key person, wherein the specific setting method comprises the following steps:

selecting a plurality of points a of daily activities of the key personnel₁、a₂、a₃…, forming a plurality of normal trajectory lines according to the daily activity sequence, namely forming a key personnel normal trajectory line array A, wherein the normal trajectory lines can not form a loop;

step 3, if the point is at the prevention and control point P_xIdentifying the image of the key personnel, uploading the image of the key personnel and the occurrence prevention and control point P through the terminal_xThe uploaded information is processed as follows:

judging whether the key personnel has a track line array D of the day:

if not, then newly building track line array D, and controlling point P_xDot as trajectory line D₁Head node d of₁₁I.e. D₁The first node of (a);

if the array of the trajectory line D { D } of the current day already exists₁(d₁₁-d₁₂-d₁₃-……)、D₂(d₂₁-d₂₂-d₂₃-……)……D_n(d_n1-d_n2-d_n3… …), the prevention and control point P is set_xAdding the data into a trajectory line array D, specifically: take the latest trajectory line D_nObtaining a trajectory line D_nTail node d of_niI.e. trajectory line D_nThe last node of (2), the judgment prevention and control point P_xAnd tail node d_niIf the distance is less than R, the prevention and control point P is set_xAdding trajectory line D_nIn, and update P_xIs D_nThe tail node of (1); if not, a new trajectory line D is created for the key personnel_n+1And is provided with P_xIs D_n+1A head node of (a);

judging prevention and control point P_xWhether the red and green marks are red or not is judged, if yes, an early warning message is directly sent;

if the point P is controlled_xThe red and green marks are green, and the prevention and control point P is further judged_xIf the action of the uploading event needs long-term monitoring, updating the key personnel monitoring queue, and monitoring the key personnel for a long time, if the action does not need long-term monitoring, then monitoring the key personnel for a long time; and acquiring the trace lines with the trace point number exceeding a threshold value N in the trace line array D, respectively carrying out similarity calculation on the trace lines with the trace lines in the normal trace line array A, wherein the trace points with the trace point number exceeding the threshold value N are respectively subjected to similarity calculation, and when the similarity is smaller than a certain threshold value, sending an early warning message.

2. The method for prevention, control and early warning of key personnel according to claim 1, wherein the information of the prevention and control point P in step 1 is information of a corresponding image recognition camera.

3. The method for prevention, control and early warning of key personnel according to claim 1, wherein the step 3 is further for judging the prevention and control point P_xWhether the action of uploading the event needs long-term monitoring is determined according to the type of the prevention and control point and the monitored direction information.

4. The method for prevention, control and early warning of key personnel according to claim 1, wherein the threshold N in step 3 is determined according to the number of normal tracing points of the key personnel.

5. The method for prevention, control and early warning of key personnel according to any one of claims 1 to 4, wherein in step 3, the similarity calculation is performed on the trajectory lines with the number of each trajectory point exceeding the threshold N and the trajectory lines in the normal trajectory line array A, when the similarity is smaller than a certain threshold, the early warning message is sent, and instead of the judgment according to the discrete Frechet distance, specifically:

setting the number of trace points in a trace line array D exceeding a threshold value N as H, setting the number of trace points in an array A as Q, and setting the H to be composed of H trace points and the Q to be composed of Q trace points;

using sigma (H) ═ u₁,u₂,u₃…u_h)，σ(Q)＝(v₁,v₂,v₃…v_q) Respectively representing the sequential sets of the two track points; the following sequence point pairs L can be obtained:

wherein a is₁＝1,b₁＝1,a_m＝h,b_mQ, with a for any i 1_i+1＝a_iOr a_i+1＝a_i+1 and b_i+1＝b_i；

H. The length L between the sequence pairs between the Q trace points is defined as the maximum value of the euclidean distance in each sequence pair, that is:

then the discrete Frechet distance is expressed as follows: delta_dF(H,Q)＝min(||L||)，

Calculating the discrete Frechet distance between the curve meeting the conditions in the D and all the curves in the A, and taking s-min (delta)_dF(H, Q)) is the minimum Frechet distance of the key personnel, whether the minimum Frechet distance s is larger than a threshold value M or not is judged, and if yes, an early warning message is sent.

Images