Intelligent video monitoring terminal automatic tracking method based on target detection

Abstract

The invention discloses an automatic tracking method for an intelligent video monitoring terminal based on target detection, particularly relates to the field of automatic tracking of video monitoring, and comprises an image intelligent analysis and processing module and a monitoring terminal. According to the method, firstly, the relative distance of a target is measured and calculated through a target distance measurement and calculation module, a moving track prediction module and a target behavior detection module, the moving track of the target is recorded and predicted, the moving behavior of the target is detected, and a key target is analyzed in combination with an image intelligent analysis and processing module; automatic switching of key targets is achieved through the target movement tracking module according to changes of the targets, the shooting orientation angle and the focal length of the camera are sequentially controlled through the execution module, the key targets are located in the optimal state of a video picture, key target tracking, recording and shooting are achieved, and it is guaranteed that key monitoring objects on a working site are clearly visible; and abnormal conditions caused by human negligence are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of video surveillance automatic tracking, and more specifically, to an automatic tracking method of an intelligent video surveillance terminal based on target detection. Background Art

[0002] With the development of society and the continuous construction of cities, construction and maintenance sites often exist in both the city center and the suburbs. There are many complex factors in the construction process of construction and maintenance sites, which affect the progress and safety of construction. Therefore, video surveillance terminals are needed to effectively monitor and manage the construction conditions of the construction sites and the work conditions of the staff.

[0003] Video surveillance technology plays a vital role in the fields of intelligent transportation, national defense security, public security, etc., and target detection and tracking technology is an important part of video surveillance technology. Through video surveillance technology, various behaviors of the monitored objects in the monitoring scene can be effectively monitored, and abnormal situations can be handled in a timely manner. In practical applications, due to the complex application scenarios of video surveillance technology and different equipment, target detection and tracking technology based on video surveillance faces many challenges;

[0004] However, practice has found that in the application technology of existing video surveillance terminals, when workers go up and down poles or move work locations, the video terminal lens is unable to automatically track key targets for real-time monitoring, and needs to rely on manual adjustment of the lens for key targets in the background, resulting in the video images of most key targets failing to capture the work images in time, requiring a large amount of manpower, and easily failing to detect abnormal situations in time due to human negligence, which in turn leads to adverse events. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an automatic tracking method of an intelligent video surveillance terminal based on target detection to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: an automatic tracking method of an intelligent video monitoring terminal based on target detection, comprising an image intelligent analysis and processing module and a monitoring terminal, wherein the output end of the image intelligent analysis and processing module is connected to an alarm module and a video information recorder, and the image intelligent analysis and processing module comprises a target classification module, a target distance measurement module, a movement trajectory prediction module, a target behavior detection module, and a target comparison module;

[0007] The monitoring terminal includes a video information acquisition module, a target dynamic detection module, a target movement tracking module, a data transmission module, a working status detection module, an execution module, and a camera. The target movement tracking module includes a target movement rate detection module, a target switching judgment module, a second target pre-elimination module, and an exclusion time setting module.

[0008] In a preferred embodiment, the input end of the image intelligent analysis and processing module is connected to a target library and an information input module, and the image intelligent analysis and processing module and the monitoring terminal transmit information to each other through a data transmission module.

[0009] In a preferred embodiment, the target library is used for comparison with the detection target, and the information input module is used for inputting numerical information such as detection target data information, movement rate warning value, movement range preset value, etc.

[0010] In a preferred embodiment, the alarm module is used to issue an alarm to remind monitoring staff to focus on checking and to issue early warnings when there are major safety hazards, and to communicate in time to on-site staff to stay away in time. The shooting monitoring information can be stored through video information recording.

[0011] In a preferred embodiment, the target classification module is used to classify the photographed targets, the target distance measurement module is used to measure the on-site distance of the target to obtain the relative distance, the movement trajectory prediction module is used to predict the next movement trajectory based on the target movement trajectory to determine whether there are safety hazards, the target behavior detection module is used to detect the target movement behavior to determine what the target is doing, and the target comparison module is used to retrieve the internal data of the target library and compare it with the photographed target to determine whether the photographed target is a target that needs to be monitored.

[0012] In a preferred embodiment, the video information acquisition module is used to shoot the construction site and collect and record the on-site information. The target dynamic detection module is used to detect whether the target is moving, and detect the target movement range, movement trajectory and speed. The data transmission module is used to send the detection information to the image intelligent analysis and processing module for intelligent analysis and processing. The working status detection module is used to detect the working current, voltage and adjustment resistance of the monitoring terminal to determine the working status of the monitoring terminal.

[0013] In a preferred embodiment, the target movement rate detection module is used to detect the rate of target movement and determine whether there is any abnormality in the target movement. The target switching judgment module is used to make a switching judgment on the monitoring target. The second target pre-exclusion module is used to pre-exclude monitoring of the second target. The exclusion time setting module is used to set the attention time for the second key target and the time for excluding target monitoring.

[0014] In a preferred embodiment, the execution module includes a monitoring angle adjustment unit and a monitoring focal length adjustment unit, wherein the monitoring angle adjustment unit is used to adjust the monitoring direction angle of the camera, and the monitoring focal length adjustment unit is used to adjust the monitoring focal length of the camera.

[0015] In a preferred embodiment, the target dynamic detection module includes a target recognition and classification unit, a target comparison unit, and a moving target tracking unit. The target recognition and classification unit includes an operator and key operation tools.

[0016] In a preferred embodiment, the target recognition and classification unit is used for target classification detection, the target comparison unit is used for target comparison, the moving target tracking unit is used for tracking moving targets, the workers include workers who climb at heights, workers who climb using bamboo ladders, workers who wear insulating gloves, or workers who use grounding wires and electrician test pens, and the key operating tools include guardrails, crane hooks and other key detection targets.

[0017] Technical effects and advantages of the present invention:

[0018] 1. The present invention firstly measures the relative distance of the target, records and predicts the moving trajectory of the target, and detects the moving behavior of the target through the target distance measurement module, the moving trajectory prediction module, and the target behavior detection module, so as to judge whether there is a safety hazard in the movement of the target. At the same time, according to the detection data, the key target is analyzed through the image intelligent analysis and processing module, and the automatic switching of the key target is realized according to the change of the target through the target movement tracking module. The shooting direction angle and focal length of the camera are controlled in turn through the execution module, so that the key target is located in the best state of the video screen. The key target tracking, recording and shooting ensure that the key monitoring objects on the operation site are clearly visible, which helps the safety inspectors to effectively supervise and avoid abnormal situations caused by human negligence;

[0019] 2. The present invention can also detect the moving range, moving trajectory and speed of the target through the target dynamic detection module, so as to judge whether the movement of the target exceeds the range, or whether there is a safety hazard in the moving trajectory, and detect whether the moving speed is abnormal, thereby improving the safety monitoring effect and detecting the working state of the monitoring terminal through the working state detection module, thereby avoiding the situation where the working state detection module is damaged and the judgment error cannot be found in time, thereby improving the safety supervision effect;

[0020] 3. The present invention also detects the moving speed of all targets in the picture through the target moving speed detection module, and can abandon tracking and supervision of targets with a smaller moving range through the target switching judgment module, so as to facilitate automatic judgment of targets worthy of tracking and supervision, thereby realizing the switching of key targets, improving the accuracy of safety monitoring, and not giving up the normal supervision and shooting of the target. At the same time, the second target pre-elimination module and the exclusion time setting module can control the fixed time cycle shooting and recording of the target once, so as to avoid accidents and situations that cannot be discovered in time, improve the safety monitoring effect, and facilitate more accurate supervision of the work safety of operators;

[0021] In summary, through the mutual influence of the above-mentioned multiple effects, key targets can be automatically tracked for real-time monitoring, and the key targets can be automatically replaced as the key targets change, so that the key targets are located in the best state of the video screen. Key target tracking, recording and shooting can ensure that the key monitoring objects at the work site are clearly visible and avoid abnormal situations caused by human negligence. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 Schematic diagram of the image intelligent analysis and processing module of the present invention.

[0024] Figure 3 Schematic diagram of the monitoring terminal of the present invention.

[0025] Figure 4 Schematic diagram of the target dynamic detection module of the present invention.

[0026] Figure 5 Schematic diagram of the target movement tracking module of the present invention.

[0027] Figure 6 Flow chart of target tracking of the present invention.

[0028] The accompanying drawings are marked as follows: 1. image intelligent analysis and processing module; 2. monitoring terminal; 3. alarm module; 4. target library; 5. information input module; 6. target classification module; 7. target distance measurement module; 8. movement trajectory prediction module; 9. target behavior detection module; 10. target comparison module; 11. video information acquisition module; 12. target dynamic detection module; 13. target movement tracking module; 14. data transmission module; 15. working status detection module; 16. execution module; 17. camera; 18. monitoring angle adjustment unit; 19. monitoring focal length adjustment unit; 20. target recognition and classification unit; 21. target comparison unit; 22. moving target tracking unit; 23. operator; 24. key operation tool; 25. target movement rate detection module; 26. target switching judgment module; 27. second target pre-elimination module; 28. exclusion time setting module; 29. ​​video information recording. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] As attached Figure 1-6 The automatic tracking method of the intelligent video monitoring terminal based on target detection shown in the figure includes an image intelligent analysis and processing module 1 and a monitoring terminal 2. The intelligent image analysis and processing module 1 performs intelligent analysis and processing on the monitoring and shooting images. The output end of the image intelligent analysis and processing module 1 is connected to an alarm module 3 and a video information recorder 29. The alarm module 3 can issue an alarm message to remind the staff to handle it in time. The image intelligent analysis and processing module 1 includes a target classification module 6, a target distance measurement module 7, a movement trajectory prediction module 8, a target behavior detection module 9, and a target comparison module 10. The target classification module 6 classifies the multiple targets shot, so as to determine the target to be followed. The target distance measurement module 7 can measure the relative distance of the target to obtain the relative distance between the targets, so as to facilitate the judgment of whether the position of the moving target is offset, which can play an effective supervision role. The movement trajectory prediction module 8 can predict the target movement trajectory to avoid collision and improve the safety monitoring effect. The target behavior detection module 9 can detect the behavior of the target, so as to determine what the target does, which is convenient for supervision and recording. The target comparison module 10 can determine whether the target is a target to be monitored, which is convenient for judging the target tracked by the lens and improving the monitoring effect.

[0031] The monitoring terminal 2 includes a video information acquisition module 11, a target dynamic detection module 12, a target movement tracking module 13, a data transmission module 14, a working status detection module 15, an execution module 16, and a camera 17. The target movement tracking module 13 includes a target movement rate detection module 25, a target switching judgment module 26, a second target pre-elimination module 27, and an exclusion time setting module 28. The construction site can be monitored through the video information acquisition module 11, and the pictures taken at the construction site are transmitted to the image intelligent analysis and processing module 1 in real time for image analysis and processing. The moving range, moving trajectory and speed of the target can be detected through the target dynamic detection module 12, so as to determine whether the movement of the target exceeds the range, or whether there are safety hazards in the moving trajectory, and detect whether the moving speed is abnormal, thereby improving the safety monitoring effect, and through the working status detection module Block 15 detects the working status of the monitoring terminal 2 to avoid the situation where the working status detection module 15 is damaged and the judgment error occurs due to the inability to detect in time, thereby improving the safety supervision effect. The target movement rate detection module 25 can detect whether the target movement is abnormal, thereby improving the safety supervision effect. The target switching judgment module 26 can abandon tracking and supervision of targets with a smaller movement range, facilitate automatic judgment of targets worthy of tracking and supervision, improve the accuracy of safety monitoring, and will not give up normal supervision and shooting of the target. The second target pre-exclusion module 27 can mark the second immobile target, thereby excluding target tracking and shooting, and the exclusion time setting module 28 can control the fixed time to cyclically shoot and record the target once, thereby avoiding accidents and situations that cannot be discovered in time, improving the safety monitoring effect, and facilitating more accurate supervision of the work safety of operators.

[0032] As attached Figure 1 As shown, the input end of the image intelligent analysis and processing module 1 is connected to the target library 4 and the information input module 5 , and the image intelligent analysis and processing module 1 and the monitoring terminal 2 transmit information to each other through the data transmission module 14 .

[0033] As attached Figure 1 As shown, the target library 4 is used for comparison with the detection target, and the information input module 5 is used for inputting the detection target data information, the moving speed warning value, the moving range preset value and other numerical information. The target library 4 can conveniently provide comparison samples, and conveniently judge whether it is a target that needs to be detected, and conveniently input information for control operation through the information input module 5. The image intelligent analysis and processing module 1 and the monitoring terminal 2 can be interconnected through the data transmission module 14, so that it is convenient to send instructions to the monitoring terminal 2 through the image intelligent analysis and processing module 1, and the collection and analysis information of the monitoring terminal 2 can also be input into the internal summary analysis and processing of the image intelligent analysis and processing module 1, so as to improve the precision and accuracy of monitoring.

[0034] As attached Figure 1As shown, the alarm module 3 is used to issue an alarm to remind monitoring staff to focus on checking and to issue early warnings when there are major safety hazards, and to communicate in time with on-site staff to stay away in time to improve the safety supervision effect. The video information recorder 29 can store the shooting monitoring information for later viewing.

[0035] As attached Figure 2 As shown, the target classification module 6 is used to classify the photographed targets, the target distance measurement module 7 is used to measure the on-site distance of the target and obtain the relative distance, the movement trajectory prediction module 8 is used to predict the next movement trajectory according to the target movement trajectory to determine whether there are safety hazards, the target behavior detection module 9 is used to detect the target movement behavior and determine what the target does, the target comparison module 10 is used to retrieve the internal data of the target library 4 and compare it with the photographed target to determine whether the photographed target is a target that needs to be monitored, the target classification module 6 can be used to determine the target that the camera needs to follow, the target distance measurement module 7 can be used to measure the relative distance of the target and obtain the relative distance between the targets, which is convenient for determining whether the position of the moving target is offset, which can play an effective supervision role, and the movement trajectory of the target can be predicted by the movement trajectory prediction module 8 to avoid collision and improve the safety monitoring effect, and the target behavior detection module 9 can be used to determine what the target does to facilitate supervision and recording, and the target comparison module 10 can be used to determine whether the target is a target that needs to be monitored, which is convenient for determining the target that the lens tracks and improves the monitoring effect.

[0036] As attached Figure 3 As shown, the video information acquisition module 11 is used to capture and record the on-site information of the construction site, the target dynamic detection module 12 is used to detect whether the target is moving, and detect the target movement range, movement trajectory and speed, the data transmission module 14 is used to send the detection information to the image intelligent analysis and processing module 1 for intelligent analysis and processing, the working status detection module 15 is used to detect the working current voltage and adjustment resistance of the monitoring terminal 2, and judge the working status of the monitoring terminal 2. The construction site can be monitored by the video information acquisition module 11, and the pictures taken at the construction site are transmitted to the image intelligent analysis and processing module 1 in real time for image analysis and processing. The target dynamic detection module 12 can be used to conveniently judge whether the movement of the target exceeds the range, or whether there are safety hazards in the movement trajectory, and detect whether the movement speed is abnormal, thereby improving the safety monitoring effect, and the working status detection module 15 detects the working status of the monitoring terminal 2 to avoid the situation where the working status detection module 15 is damaged and cannot be discovered in time, resulting in erroneous judgment, thereby improving the safety supervision effect.

[0037] As attached Figure 5As shown, the target movement rate detection module 25 is used to detect the rate of target movement and determine whether there is any abnormality in the target movement. The target switching judgment module 26 is used to switch and judge the monitoring target. The second target pre-elimination module 27 is used to pre-eliminate monitoring of the second target. The exclusion time setting module 28 is used to set the attention time of the second key target and the time for excluding target monitoring. The target movement rate detection module 25 can improve the safety supervision effect, and the target switching judgment module 26 can abandon tracking and supervision of targets with a smaller movement range, so as to facilitate automatic judgment of targets worthy of tracking and supervision, improve the accuracy of safety monitoring, and will not give up normal supervision and shooting of the target. The second target pre-elimination module 27 can mark the second immobile target, thereby excluding target tracking and shooting, and the exclusion time setting module 28 can control the fixed time cycle shooting and recording of the target once, so as to avoid accidents and situations that cannot be discovered in time, improve the safety monitoring effect, and facilitate more accurate supervision of the work safety of operators.

[0038] As attached Figure 3 As shown, the execution module 16 includes a monitoring angle adjustment unit 18 and a monitoring focal length adjustment unit 19. The monitoring angle adjustment unit 18 is used to adjust the monitoring direction angle of the camera 17, and the monitoring focal length adjustment unit 19 is used to adjust the monitoring focal length of the camera 17. The execution module 16 is convenient for controlling the monitoring direction angle and the monitoring angle of the camera 17 through the monitoring angle adjustment unit 18 and the monitoring focal length adjustment unit 19, so as to avoid the target position offset or the key target being imaged too small in the picture, so that the image angle of the picture can always be kept in the best state, thereby ensuring that the key targets are monitored clearly at the work site, improving the accuracy of intelligent safety supervision, and improving the use effect.

[0039] As attached Figure 4 As shown, the target dynamic detection module 12 includes a target recognition and classification unit 20, a target comparison unit 21, and a moving target tracking unit 22. The target recognition and classification unit 20 includes an operator 23 and a key operation tool 24.

[0040] As attached Figure 4As shown, the target recognition and classification unit 20 is used for target classification and detection, the target comparison unit 21 is used for target comparison, the motion target tracking unit 22 is used for tracking motion targets, the operators 23 include operators who climb at heights, operators who climb using bamboo ladders, operators who wear insulating gloves, or operators who use grounding wires and electrician test pens, and the key operation tools 24 include key detection targets such as guardrails and crane hooks. The target recognition and classification unit 20 can be used to classify the photographed targets, determine the positions and moving ranges of the operators, and facilitate classification and detection through the operators 23 and the key operation tools 24, so as to facilitate accurate viewing of the supervision targets at a later stage, and facilitate key target motion tracking and monitoring through the target comparison unit 21 and the motion target tracking unit 22, thereby improving the comprehensiveness of safety supervision and improving the use effect.

[0041] Working principle of the present invention: When in use, the camera 17 captures the picture and the target recognition and classification unit 20 of the target dynamic detection module 12 analyzes the picture through the target comparison unit 21 in combination with the target library 4 to determine whether there is a target;

[0042] When there is a target, the target dynamic detection module 12 detects whether the target is moving, and the moving target tracking unit 22 monitors the moving target, and sends the information to the image intelligent analysis and processing module 1 through the data transmission module 14. The target distance measurement module 7, the moving trajectory prediction module 8, and the target behavior detection module 9 measure the relative distance of the target, record and predict the moving trajectory of the target, and detect the moving behavior of the target, so as to determine whether the movement of the target poses a safety hazard;

[0043] At the same time, according to the detected moving speed and moving behavior detection, the key target can be analyzed by the image intelligent analysis and processing module 1, and the target movement tracking module 13 automatically switches according to the keyness of the target, and the shooting direction angle and focal length of the camera 17 are controlled in turn by the execution module 16, so that the key target is located in the best state of the video screen, ensuring that the key monitoring objects at the operation site are clearly visible, helping safety inspectors to effectively supervise and improve accuracy;

[0044] When abnormal target movement behavior or movement trajectory is detected or there is a safety hazard, an alarm can be issued through the alarm module 3 to improve the safety monitoring effect and facilitate more accurate supervision of the work safety of the operators;

[0045] The process of switching the key target by the target movement tracking module 13 is specifically as follows: the movement rate of all targets in the picture is detected by the target movement rate detection module 25, and the tracking and supervision of targets with a smaller movement range can be abandoned by the target switching judgment module 26, so as to facilitate the automatic judgment of targets worthy of tracking and supervision, thereby realizing the switching of key targets, and the second target pre-exclusion module 27 and the exclusion time setting module 28 can control the fixed time cycle shooting and recording of the target, so as to avoid accidents and situations that cannot be discovered in time, thereby improving the safety monitoring effect and facilitating more accurate supervision of the work safety of operators.

[0046] In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the case of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0047] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic tracking method for an intelligent video surveillance terminal based on target detection, characterized in that: The invention comprises an image intelligent analysis and processing module (1) and a monitoring terminal (2), wherein the output end of the image intelligent analysis and processing module (1) is connected to an alarm module (3) and a video information recorder (29), and the image intelligent analysis and processing module (1) comprises a target classification module (6), a target distance measurement module (7), a movement trajectory prediction module (8), a target behavior detection module (9), and a target comparison module (10); The monitoring terminal (2) comprises a video information acquisition module (11), a target dynamic detection module (12), a target movement tracking module (13), a data transmission module (14), a working state detection module (15), an execution module (16), and a camera (17); the target movement tracking module (13) comprises a target movement speed detection module (25), a target switching judgment module (26), a second target pre-elimination module (27), and an exclusion time setting module (28).

2. The automatic tracking method of intelligent video surveillance terminal based on target detection according to claim 1 is characterized in that: The input end of the image intelligent analysis and processing module (1) is connected to a target library (4) and an information input module (5), and the image intelligent analysis and processing module (1) and the monitoring terminal (2) transmit information to each other via a data transmission module (14).

3. The automatic tracking method of intelligent video surveillance terminal based on target detection according to claim 2 is characterized in that: The target library (4) is used for comparison with the detection target, and the information input module (5) is used for inputting numerical information such as detection target data information, movement rate warning value, movement range preset value, etc.

4. The automatic tracking method of intelligent video surveillance terminal based on target detection according to claim 1 is characterized in that: The alarm module (3) is used to send out an alarm to remind monitoring staff to focus on the inspection and to issue an early warning when there is a major safety hazard, and to communicate with on-site staff in a timely manner to leave in time. The video information recorder (29) can store the filmed monitoring information.

5. The automatic tracking method of intelligent video surveillance terminal based on target detection according to claim 1 is characterized in that: The target classification module (6) is used to classify the photographed targets, the target distance measurement module (7) is used to measure the on-site distance of the target to obtain the relative distance, the movement trajectory prediction module (8) is used to predict the next movement trajectory based on the target movement trajectory to determine whether there is a safety hazard, the target behavior detection module (9) is used to detect the target movement behavior to determine what the target is doing, and the target comparison module (10) is used to retrieve the internal data of the target library (4) and compare it with the photographed target to determine whether the photographed target is a target that needs to be monitored.

6. The automatic tracking method of intelligent video surveillance terminal based on target detection according to claim 1 is characterized in that: The video information acquisition module (11) is used to capture and record on-site information of the construction site; the target dynamic detection module (12) is used to detect whether the target is moving, and to detect the target moving range, moving trajectory and speed; the data transmission module (14) is used to send the detection information to the image intelligent analysis and processing module (1) for intelligent analysis and processing; the working status detection module (15) is used to detect the working current voltage and adjustment resistance of the monitoring terminal (2) to determine the working status of the monitoring terminal (2).

7. The automatic tracking method of intelligent video surveillance terminal based on target detection according to claim 1 is characterized in that: The target movement rate detection module (25) is used to detect the target movement rate and determine whether there is any abnormality in the target movement; the target switching judgment module (26) is used to make a switching judgment on the monitoring target; the second target pre-elimination module (27) is used to pre-eliminate monitoring of the second target; and the exclusion time setting module (28) is used to set the attention time of the second key target and the time for excluding target monitoring.

8. The automatic tracking method of intelligent video surveillance terminal based on target detection according to claim 1 is characterized in that: The execution module (16) comprises a monitoring angle adjustment unit (18) and a monitoring focal length adjustment unit (19), wherein the monitoring angle adjustment unit (18) is used to adjust the monitoring direction angle of the camera (17), and the monitoring focal length adjustment unit (19) is used to adjust the monitoring focal length of the camera (17).

9. The automatic tracking method of intelligent video surveillance terminal based on target detection according to claim 1 is characterized in that: The target dynamic detection module (12) comprises a target recognition and classification unit (20), a target comparison unit (21), and a moving target tracking unit (22); the target recognition and classification unit (20) comprises an operator (23) and a key operation tool (24).

10. The automatic tracking method of intelligent video surveillance terminal based on target detection according to claim 9 is characterized in that: The target recognition and classification unit (20) is used for target classification detection, the target comparison unit (21) is used for target comparison, the moving target tracking unit (22) is used for moving target tracking, the operating personnel (23) include operating personnel who climb at heights, operating personnel who use bamboo ladders, operating personnel who wear insulating gloves, or operating personnel who use grounding wires and electrician test pens, and the key operating tools (24) include key detection targets such as guardrails and crane hooks.

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