KR102700733B1 - Method and system for controlling ptz cctv camera automatically - Google Patents

Abstract

A method for generating an edge AI model for edge CCTV is provided. The method includes: receiving a first CCTV video analysis result analyzed from at least one edge CCTV among a plurality of edge CCTVs; generating a second CCTV video analysis result using a video analysis AI model based on the first CCTV video analysis result; generating a learning data set based on event occurrence time information corresponding to the first CCTV video analysis result, a video clip, and the second video analysis result; and learning and generating an edge AI model for the edge CCTV based on the learning data set.

Description

{METHOD AND SYSTEM FOR CONTROLLING PTZ CCTV CAMERA AUTOMATICALLY}

The present invention relates to a PTZ CCTV camera automatic control method and system.

Recently, video security technology is widely used in modern society for various purposes such as protecting human and material resources, detecting and preventing abnormal situations, and performing post-processing.

In the case of conventional PTZ CCTV for this type of video security technology, the tour function divides the surveillance area into specific surveillance sections and uses a method of monitoring the surveillance sections at regular intervals according to the sequential mode or random mode.

In sequential monitoring mode, a method is used to sequentially monitor surveillance sections, and in random monitoring mode, the entire section is monitored in a random order, but each surveillance section is monitored once while going around the entire surveillance area.

However, the prior art had a problem in that it did not consider the number of moving objects appearing in each surveillance section, and since surveillance sections in which moving objects do not appear frequently were detected at the same time or cycle as surveillance sections in which moving objects appear frequently, there was a problem in that surveillance efficiency was reduced.

Publication of Patent Publication No. 10-2015-0080440 (July 9, 2015)

An embodiment of the present invention provides a PTZ CCTV camera automatic control method and system, which can perform surveillance for a longer period of time or with a higher frequency for a surveillance section where moving objects frequently appear when performing a tour function of a PTZ camera.

However, the technical tasks that this embodiment seeks to accomplish are not limited to the technical tasks described above, and other technical tasks may exist.

As a technical means for achieving the above-described technical task, a PTZ CCTV camera automatic control method according to a first aspect of the present invention includes the steps of: setting PTZ preset information for a tour function of a CCTV camera; operating the CCTV camera in a preset surveillance section for a surveillance area based on a surveillance time determined according to an importance set by the set PTZ preset information; analyzing an image captured according to the operation of the CCTV camera to calculate the number of appearances of moving objects in the surveillance section; and updating the importance of the surveillance section based on the number of appearances of the moving objects.

In some embodiments of the present invention, the step of setting PTZ preset information for a tour function of the CCTV camera may include the steps of: dividing the surveillance area into N surveillance sections; setting a shooting control period of the CCTV camera; setting an importance and a corresponding surveillance weight for each of the divided surveillance sections; setting the importance criterion according to an average number of appearances of moving objects during the shooting control period; and setting an update period for updating the importance of the surveillance sections.

In some embodiments of the present invention, when the control mode of the CCTV camera according to the PTZ preset information is set to the sequential surveillance mode, the step of operating the CCTV camera in the preset surveillance section for the surveillance area may perform PTZ control so as to sequentially monitor the N surveillance sections, and so that the surveillance time of each surveillance section is different according to the surveillance weight set for each surveillance section.

In some embodiments of the present invention, the step of operating the CCTV camera in the preset surveillance section for the surveillance area may include the step of operating the CCTV camera in the first surveillance section during a first surveillance time that reflects a first surveillance weight of a first surveillance section among the plurality of surveillance sections into the shooting control period; and the step of operating the CCTV camera in the second surveillance section during a second surveillance time that reflects a second surveillance weight of a second surveillance section continuous to the first surveillance section into the shooting control period after the operation of the CCTV camera in the first surveillance section is completed.

In some embodiments of the present invention, when the control mode of the CCTV camera according to the PTZ preset information is set to a random surveillance mode, the step of operating the CCTV camera in the preset surveillance section for the surveillance area may include controlling the N surveillance sections to be randomly monitored, and performing PTZ control such that the total surveillance time during which the CCTV camera makes one revolution is different for each surveillance section according to the surveillance weight set for each surveillance section.

In some embodiments of the present invention, the step of operating the CCTV camera in the preset surveillance section of the surveillance area may include: the step of operating the CCTV camera to photograph a first surveillance section randomly determined among the plurality of surveillance sections according to the shooting control cycle; the step of operating the CCTV camera to photograph a second surveillance section randomly determined among the plurality of surveillance sections after the operation of the CCTV camera in the first surveillance section is completed; the step of determining whether the operation time in the first surveillance section exceeds a first overall surveillance time according to a first surveillance weight set for the first surveillance section when the first surveillance section is randomly determined while the CCTV camera makes a circuit; and the step of operating the CCTV camera to photograph the first surveillance section according to the shooting control cycle when the first surveillance section is randomly determined.

In addition, a PTZ CCTV camera automatic control system according to a second aspect of the present invention includes a memory storing a program for operating a PTZ CCTV camera in a surveillance section based on preset PTZ preset information and the number of appearances of moving objects in the surveillance section, and a processor that sets PTZ preset information for a tour function of the CCTV camera by executing the program stored in the memory, operates the CCTV camera in a preset surveillance section for a surveillance area based on a surveillance time determined according to an importance set by the preset PTZ preset information, analyzes an image captured according to the operation of the CCTV camera, calculates the number of appearances of moving objects in the surveillance section, and then updates the importance of the surveillance section based on the number of appearances of the moving objects.

In some embodiments of the present invention, the processor may set, as the PTZ preset information, information on surveillance sections divided into N for the surveillance area, information on a filming control cycle of the CCTV camera, information on importance and a corresponding surveillance weight for each of the divided surveillance sections, information on a criterion setting for the importance based on an average number of appearances of moving objects during the filming control cycle, and information on an update cycle for updating the importance.

In some embodiments of the present invention, when the control mode of the CCTV camera according to the PTZ preset information is set to a sequential surveillance mode, the processor controls the N surveillance sections to be monitored sequentially, and performs PTZ control so that the surveillance time of each surveillance section is different according to the surveillance weight set for each surveillance section.

In some embodiments of the present invention, the processor operates the CCTV camera during a first surveillance time in a first surveillance section, and operates the CCTV camera during a second surveillance time in a second surveillance section continuous to the first surveillance section, wherein the first and second surveillance times can be calculated by reflecting the shooting control cycle in the first and second surveillance weights.

In some embodiments of the present invention, when the control mode of the CCTV camera according to the PTZ preset information is set to a random surveillance mode, the processor may perform PTZ control so as to randomly monitor the N surveillance sections, and perform PTZ control so that the total surveillance time during which the CCTV camera makes one revolution is different for each surveillance section according to a surveillance weight set for each surveillance section.

In some embodiments of the present invention, the processor operates a CCTV camera during a shooting control period in a first surveillance section that is randomly determined among the plurality of surveillance sections, and after the operation of the CCTV camera in the first surveillance section is completed, operates the CCTV camera during a shooting control period in a second surveillance section that is randomly determined among the plurality of surveillance sections, wherein the CCTV camera may be operated according to the shooting control period at least once so as to satisfy a first overall surveillance time in the first surveillance section while the CCTV camera makes one revolution, and the CCTV camera may be operated according to the shooting control period at least once so as to satisfy a second overall surveillance time in the second surveillance section.

In addition, other methods for implementing the present invention, other systems, and computer-readable recording media recording a computer program for executing the method may be further provided.

According to one embodiment of the present invention described above, the number of appearances of moving objects appearing in a surveillance section is analyzed, and the importance of the surveillance section is automatically classified based on the number of appearances, thereby adaptively adjusting the surveillance time or surveillance frequency, so that surveillance can be performed for a longer time and with a greater frequency for a surveillance section in which many moving objects appear.

Through this, one embodiment of the present invention can increase the efficiency of the tour function of a PTZ CCTV camera, and has the advantage of enabling rapid tracking and response to crimes and accidents due to the increased efficiency.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below.

Figure 1 is a drawing for explaining the preset tour function of a conventional PTZ CCTV camera.
FIG. 2 is a block diagram illustrating the configuration of a PTZ CCTV camera automatic control system according to one embodiment of the present invention.
FIG. 3 is a flowchart of a PTZ CCTV camera automatic control method according to one embodiment of the present invention.
FIG. 4 is a drawing for explaining a process of setting PTZ preset information in one embodiment of the present invention.
FIG. 5 is a diagram illustrating an example of updating the importance of a monitoring section in one embodiment of the present invention.

The advantages and features of the present invention, and the methods for achieving them, will become clear with reference to the embodiments described in detail below together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and these embodiments are provided only to make the disclosure of the present invention complete and to fully inform a person skilled in the art of the scope of the present invention, and the present invention is defined only by the scope of the claims.

The terminology used herein is for the purpose of describing embodiments only and is not intended to limit the present invention. In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. The terms "comprises" and/or "comprising" as used in the specification do not exclude the presence or addition of one or more other components in addition to the mentioned components. Like reference numerals refer to like components throughout the specification, and "and/or" includes each and every combination of one or more of the mentioned components. Although "first", "second", etc. are used to describe various components, these components are not limited by these terms. These terms are only used to distinguish one component from another component. Therefore, it should be understood that a first component mentioned below may also be a second component within the technical spirit of the present invention.

Unless otherwise defined, all terms (including technical and scientific terms) used in this specification may be used with the meaning commonly understood by those skilled in the art to which the present invention belongs. In addition, terms defined in commonly used dictionaries shall not be ideally or excessively interpreted unless explicitly specifically defined.

In order to help those skilled in the art understand, the background technology related to the present invention will first be described, and then an embodiment of the present invention will be described in detail.

Figure 1 is a drawing for explaining the preset tour function of a conventional PTZ CCTV camera.

As illustrated in Fig. 1, in the prior art, when a user sets preset information for a tour function of a PTZ CCTV camera, the PTZ CCTV camera is controlled according to the set preset information.

In conventional PTZ CCTV cameras, the surveillance area is divided into specific sections, and the surveillance sections are monitored at regular intervals according to sequential surveillance mode or random surveillance mode. In this case, the sequential surveillance mode uses a method of sequentially monitoring the surveillance sections, and in the random surveillance mode, the surveillance sections are monitored in a random order, but each surveillance section is monitored once while going around the entire surveillance area.

Hereinafter, a PTZ CCTV camera automatic control system (100) according to one embodiment of the present invention will be described with reference to FIG. 2.

FIG. 2 is a block diagram illustrating the configuration of a PTZ CCTV camera automatic control system (100) according to one embodiment of the present invention.

A PTZ CCTV camera automatic control system (100) according to one embodiment of the present invention includes an input unit (110), a communication unit (120), a display unit (130), a memory (140), and a processor (150).

The input unit (110) generates input data in response to user input of the PTZ CCTV camera automatic control system (100). At this time, the user input may be an input for setting preset information of the CCTV camera.

The input unit (110) includes at least one input means. The input unit (110) may include a keyboard, a key pad, a dome switch, a touch panel, a touch key, a mouse, a menu button, etc.

The communication unit (120) transmits and receives data with a plurality of CCTV cameras, and also performs communication with external devices such as servers or data collection devices to transmit and receive data. The communication unit (120) may include both a wired communication module and a wireless communication module. The wired communication module may be implemented with a power line communication device, a telephone line communication device, a cable home (MoCA), Ethernet, IEEE1294, an integrated wired home network, and an RS-485 control device. In addition, the wireless communication module may be configured with a module for implementing functions such as WLAN (wireless LAN), Bluetooth, HDR WPAN, UWB, ZigBee, Impulse Radio, 60GHz WPAN, Binary-CDMA, wireless USB technology, wireless HDMI technology, and other 5G (5th generation communication), LTE-A (long term evolution-advanced), LTE (long term evolution), and Wi-Fi (wireless fidelity).

The display unit (130) displays display data according to the operation of the PTZ CCTV camera automatic control system (100). For example, the display unit (130) can display information on multiple CCTV cameras, captured images, and other PTZ preset information on the screen.

The display unit (130) includes a liquid crystal display (LCD), a light emitting diode (LED) display, an organic light emitting diode (OLED) display, a micro electro mechanical systems (MEMS) display, and an electronic paper display. The display unit (130) may be implemented as a touch screen by being combined with the input unit (110).

The memory (140) stores programs for operating the PTZ CCTV camera in the surveillance section based on the preset PTZ preset information and the number of appearances of moving objects in the surveillance section. Here, the memory (140) collectively refers to a non-volatile storage device and a volatile storage device that maintain stored information even when power is not supplied. For example, the memory (140) may include a NAND flash memory such as a compact flash (CF) card, an SD (secure digital) card, a memory stick, a solid-state drive (SSD), and a micro SD card, a magnetic computer storage device such as a hard disk drive (HDD), and an optical disc drive such as a CD-ROM or a DVD-ROM.

The processor (150) can control at least one other component (e.g., hardware or software component) of the edge AI model generation system (100) by executing software such as a program, and can perform various data processing or operations.

The processor (150) sets PTZ preset information for the tour function of the CCTV camera, and operates the CCTV camera in a preset surveillance section for the surveillance area based on a surveillance time determined according to the importance set by the set PTZ preset information.

Then, the processor (150) analyzes the captured video according to the operation of the CCTV camera to calculate the number of appearances of moving objects in the surveillance section, and then updates the importance of the surveillance section based on the number of appearances of moving objects.

Meanwhile, in one embodiment of the present invention, the processor (150) may use at least one of a machine learning, a neural network, or a deep learning algorithm as an artificial intelligence (AI) algorithm for image analysis. For example, at least one of a machine learning, a neural network, or a deep learning algorithm may be used as an artificial intelligence (AI) algorithm, and examples of the neural network may include models such as a CNN (Convolutional Neural Network), a DNN (Deep Neural Network), and an RNN (Recurrent Neural Network).

Below, a method performed by a PTZ CCTV camera automatic control system (100) according to one embodiment of the present invention will be described.

Fig. 3 is a flowchart of a PTZ CCTV camera automatic control method according to one embodiment of the present invention. Fig. 4 is a drawing for explaining a process of setting PTZ preset information in one embodiment of the present invention.

In one embodiment of the present invention, first, PTZ preset information for a tour function of a CCTV camera is set (S110).

In one embodiment, the step of setting PTZ preset information sets the control mode of the CCTV camera (S111). At this time, the control mode of the CCTV camera is a sequential control mode or a random control mode, and this can receive a selection input from the user.

Next, the entire surveillance area to be monitored is divided into N surveillance sections (N is a natural number) through PTZ operation of the CCTV camera (S112).

Next, the CCTV camera shooting control cycle, which is the basic cycle for shooting each surveillance section, is set (S113). At this time, the shooting control cycle for shooting the entire surveillance area can also be set as needed.

Next, the importance and corresponding surveillance weights for each divided surveillance section are set (S114).

For example, the importance of a surveillance section can be set to 'high', 'medium', 'low' or according to separate section setting criteria. At this time, when setting the importance of a surveillance section, a surveillance weight according to the importance can be set together. For example, when the importance of a surveillance section is classified as 'high', 'medium', and 'low', the surveillance weights can be set to 3, 2, and 1, respectively. Or, when the importance of a surveillance section is classified as 5, 4, 3, 2, and 1, the surveillance weights can be set to 5, 4, 3, 2, and 1, respectively.

Next, the importance criterion is set according to the average number of appearances of moving objects during the shooting control period (S115). For example, if the average number of appearances of moving objects during the shooting control period is 5 or more, the importance can be set to 'high', if it is less than 5 but more than 2 times, the importance can be set to 'medium', and if it is less than 2 times, the importance can be set to 'low'.

Next, an update cycle for updating the importance of the surveillance section is set (S116).

Referring again to FIG. 3, when the setting of PTZ preset information is completed, the CCTV camera is operated in a preset surveillance section for the surveillance area based on the surveillance time determined according to the importance set by the PTZ preset information (S120).

In one embodiment, when the control mode of a CCTV camera according to PTZ preset information is set to sequential surveillance mode, N surveillance sections are controlled to be monitored sequentially. At this time, PTZ control can be performed so that the surveillance time of each surveillance section is different according to the surveillance weight set for each surveillance section.

For example, the CCTV camera in the first surveillance section can be operated during the first surveillance time (30 seconds = weight (3) * shooting control period (10 seconds)) by reflecting the first surveillance weight (assuming that the importance is 'high' and the weight is '3') of the first surveillance section among multiple surveillance sections to the shooting control period (set to 10 seconds).

And after the operation of the CCTV camera in the first surveillance section is completed, the CCTV camera in the second surveillance section can be operated during the second surveillance time (10 seconds = weight (1) * shooting control period (10 seconds)) by reflecting the second surveillance weight (assuming that the importance is 'low' and the weight is '1') in the second surveillance section that is continuous to the first surveillance section to the shooting control period (set to 10 seconds).

In another embodiment, when the control mode of the CCTV camera according to the PTZ preset information is set to the random surveillance mode, N surveillance sections are controlled to be randomly monitored. At this time, the PTZ control can be performed so that the total surveillance time during the CCTV camera's rotation is different for each surveillance section according to the surveillance weight set for each surveillance section. In other words, each surveillance section is filmed during the same shooting control cycle, but the shooting frequency can be set differently for each.

For example, a CCTV camera is operated to film a first surveillance section randomly selected from among multiple surveillance sections according to a filming control cycle (set to 10 seconds).

Similarly, after the CCTV camera operation in the first surveillance section is completed, the CCTV camera is operated to film a second surveillance section randomly selected from among multiple surveillance sections according to the filming control cycle (set to 10 seconds).

Next, when the first surveillance section is randomly determined again, it is determined whether the operation time in the first surveillance section exceeds the first total surveillance time (30 seconds = weight (3) * shooting control cycle (10 seconds)) according to the first surveillance weight set for the first surveillance section (assuming that the importance is 'high' and has a weight of '3').

And, if the first overall surveillance time is not exceeded, the CCTV camera can be operated to film according to the filming control cycle for the first surveillance section.

That is, in the case of the first surveillance section, surveillance can be performed three times with a 10-second filming control cycle while the CCTV camera makes one rotation, and in the case of the second surveillance section (assumed to have a weight of '1' with 'low' importance), surveillance can be performed once with a 10-second filming control cycle while the CCTV camera makes one rotation.

Next, the captured video is analyzed according to the operation of the CCTV camera (S130), and the number of appearances of moving objects in the surveillance section is calculated (S140). At this time, the number of appearances of moving objects may be an average number of appearances based on the shooting control cycle.

Next, it is determined whether the importance update cycle according to PTZ preset information has elapsed (S150), and when the importance update cycle has elapsed, the importance of the surveillance section is updated based on the number of appearances of moving objects (S160).

FIG. 5 is a diagram illustrating an example of updating the importance of a monitoring section in one embodiment of the present invention.

When the shooting control cycle is set to 10 seconds according to the initial PTZ preset information and the importance for each surveillance section is set as in (a) of Fig. 5, CCTV images are captured for 30 seconds (or at a frequency of 3 times) in the first surveillance section, and CCTV images are captured for 10 seconds (or at a frequency of 1 time) in the second surveillance section.

Thereafter, when the importance of the first surveillance section is updated from 'high' to 'low' and the importance of the second surveillance section is updated from 'low' to 'high', the first surveillance section captures CCTV footage for 10 seconds (or at a frequency of 1 time), and the second surveillance section captures CCTV footage for 30 seconds (or at a frequency of 3 times).

Meanwhile, in one embodiment of the present invention, the importance of a surveillance section is automatically updated by the system (100) and changes as a new update cycle arrives, but it is not necessarily limited thereto, and it goes without saying that a user may assign a surveillance time according to a fixed importance to a specific surveillance section. In this case, one embodiment of the present invention may exclude characteristic information of a surveillance section having a fixed importance when updating the importance of the remaining surveillance sections.

Meanwhile, the above description assumes that the entire surveillance area is divided into N surveillance sections of the same size, but depending on the embodiment, the sizes of the N surveillance sections may be divided differently.

For example, when setting the initial PTZ preset information, it is divided into N surveillance sections of the same size, but if the average number of occurrences of moving objects in a specific surveillance section (surveillance section A) is greater than the average number of occurrences in the entire surveillance area, surveillance section A can be divided into multiple sections (for example, 2). As surveillance section A is divided into two surveillance sections, surveillance section A, which was filmed during a 10-second shooting control cycle, has the effect of increasing the surveillance time to 10 seconds for surveillance section A-1 and 10 seconds for surveillance section A-2, thereby enabling precise object detection in a narrower area.

Afterwards, as the importance update cycle arrives, if the average number of occurrences of moving objects in the A-1 surveillance section is again greater than or equal to the average number of occurrences in the entire surveillance area, the A-1 surveillance section may be divided into multiple surveillance sections.

Or, if the average occurrence number of the same object in surveillance sections A-1 and A-2, i.e. surveillance section A, is less than the average occurrence number in the entire surveillance area, the divided surveillance sections can be merged again. At this time, the merging of surveillance sections is not limited to the previously divided surveillance sections, but can also be merged with adjacent surveillance sections. That is, the merging of surveillance section A-1 and its adjacent surveillance section B is also possible. In addition, the merged section can also be re-divided.

Meanwhile, the importance of each divided or re-divided surveillance section can be applied in the same way as the aforementioned importance setting method, and can of course vary depending on the update cycle.

Meanwhile, in the above description, steps S110 to S160 may be further divided into additional steps or combined into fewer steps, depending on the implementation of the present invention. In addition, some steps may be omitted as needed, and the order between the steps may be changed. In addition, even if other omitted content is present, the content described in FIG. 2 and the content described in FIG. 3 to FIG. 5 are mutually applicable.

The embodiments of the present invention described above may be implemented as a program (or application) to be executed in combination with a hardware server and stored in a medium.

The above-described program may include codes coded in a computer language, such as C, C++, JAVA, or machine language, that can be read by the processor (CPU) of the computer through the device interface of the computer, so that the computer reads the program and executes the methods implemented as a program. Such codes may include functional codes related to functions that define functions necessary for executing the methods, and may include control codes related to execution procedures necessary for the processor of the computer to execute the functions according to a predetermined procedure. In addition, such codes may further include memory reference-related codes regarding which location (address address) of the internal or external memory of the computer should be referenced for additional information or media necessary for the processor of the computer to execute the functions. In addition, if the processor of the computer needs to communicate with another computer or server located remotely in order to execute the functions, the code may further include communication-related code regarding how to communicate with another computer or server located remotely using the communication module of the computer, what information or media to send and receive during communication, etc.

The above-mentioned storage medium means a medium that stores data semi-permanently and can be read by a device, rather than a medium that stores data for a short period of time, such as a register, cache, or memory. Specifically, examples of the above-mentioned storage medium include, but are not limited to, ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, etc. That is, the above-mentioned program can be stored in various storage media on various servers that the above-mentioned computer can access, or in various storage media on the user's above-mentioned computer. In addition, the above-mentioned medium can be distributed to computer systems connected to a network, so that a computer-readable code can be stored in a distributed manner.

The steps of a method or algorithm described in connection with the embodiments of the present invention may be implemented directly in hardware, implemented in a software module executed by hardware, or implemented by a combination of these. The software module may reside in a Random Access Memory (RAM), a Read Only Memory (ROM), an Erasable Programmable ROM (EPROM), an Electrically Erasable Programmable ROM (EEPROM), a Flash Memory, a hard disk, a removable disk, a CD-ROM, or any other form of computer-readable recording medium well known in the art to which the present invention pertains.

Above, while the embodiments of the present invention have been described with reference to the attached drawings, it will be understood by those skilled in the art that the present invention may be implemented in other specific forms without changing the technical idea or essential features thereof. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

100: PTZ CCTV Camera Automatic Control System
110: Input section
120: Communications Department
130: Display section
140: Memory
150: Processor

Claims (12)

In a method for automatically controlling a PTZ CCTV camera performed by a computer,
Steps to set PTZ preset information for the tour function of CCTV cameras;
A step of operating the CCTV camera in a preset surveillance section for a surveillance area based on a surveillance time determined according to the importance set by the above-mentioned preset PTZ information;
A step of analyzing the video captured according to the operation of the CCTV camera and calculating the number of appearances of moving objects in the surveillance area; and
Including a step of updating the importance of the surveillance section based on the number of appearances of the above moving objects,
The steps for setting PTZ preset information for the tour function of the above CCTV camera are:
It includes a step of dividing the above surveillance area into N surveillance sections,
When the cycle for updating the above importance arrives, if the average number of occurrences of moving objects in a specific surveillance section among the N surveillance sections is greater than the average number of occurrences in the entire surveillance area, a step of dividing the specific surveillance section into multiple sections so as to have the same surveillance time as the specific surveillance section; or
Each time a period for updating the above importance arrives, if the average number of occurrences of moving objects in a specific surveillance section among the N surveillance sections is less than the average number of occurrences in the entire surveillance area, the method further includes a step of merging the divided surveillance sections.
The step of merging the divided surveillance sections includes at least one of merging between the divided surveillance sections created by dividing a specific surveillance section and merging between the divided surveillance section and another adjacent surveillance section.
PTZ CCTV camera automatic control method.
In the first paragraph,
The steps for setting PTZ preset information for the tour function of the above CCTV camera are:
A step for setting the shooting control cycle of the above CCTV camera;
A step of setting the importance and corresponding surveillance weight for each of the above divided surveillance sections;
A step of setting an importance criterion according to the average number of appearances of moving objects during the above shooting control period; and
Comprising a step of setting an update cycle for updating the importance of the above monitoring section,
PTZ CCTV camera automatic control method.
In the second paragraph,
When the control mode of the CCTV camera according to the above PTZ preset information is set to the sequential surveillance mode, the step of operating the CCTV camera in the preset surveillance section for the surveillance area is,
The above N surveillance sections are controlled to be monitored sequentially, and PTZ control is performed so that the surveillance time of each surveillance section is different according to the surveillance weight set for each surveillance section.
PTZ CCTV camera automatic control method.
In the third paragraph,
The step of operating the CCTV camera in the preset surveillance section for the above surveillance area is as follows:
A step of operating a CCTV camera in a first surveillance section during a first surveillance time period in which a first surveillance weight of a first surveillance section among a plurality of surveillance sections is reflected in the shooting control cycle; and
After the operation of the CCTV camera in the first surveillance section is completed, a step of operating the CCTV camera in the second surveillance section during a second surveillance time that reflects the second surveillance weight of the second surveillance section that is continuous with the first surveillance section in the shooting control cycle is included.
PTZ CCTV camera automatic control method.
In the second paragraph,
When the control mode of the CCTV camera according to the above PTZ preset information is set to the random surveillance mode, the step of operating the CCTV camera in the preset surveillance section for the surveillance area is,
The above N surveillance sections are controlled to be randomly monitored, and PTZ control is performed so that the total surveillance time during which the CCTV camera moves around is different for each surveillance section according to the surveillance weight set for each surveillance section.
PTZ CCTV camera automatic control method.
In paragraph 5,
The step of operating the CCTV camera in the preset surveillance section for the above surveillance area is as follows:
A step of operating a CCTV camera to film a first surveillance section randomly determined among a plurality of surveillance sections according to the filming control cycle;
A step of operating the CCTV camera to film a second surveillance section randomly determined among the plurality of surveillance sections according to the filming control cycle after the operation of the CCTV camera in the first surveillance section is completed;
When the first surveillance section is randomly determined while the CCTV camera is moving around, a step for determining whether the operating time in the first surveillance section exceeds the first total surveillance time according to the first surveillance weight set for the first surveillance section; and
Including a step of operating a CCTV camera to film according to the filming control cycle for the first surveillance section, if the first overall surveillance time is not exceeded.
PTZ CCTV camera automatic control method.
A memory storing a program for operating a PTZ CCTV camera in a surveillance section based on preset PTZ preset information and the number of appearances of moving objects in the surveillance section, which includes information on surveillance sections divided into N sections for the surveillance area based on preset PTZ preset information and the number of appearances of moving objects in the surveillance section.
By executing the program stored in the above memory, a processor is included which sets PTZ preset information for a tour function of a CCTV camera, operates the CCTV camera in a preset surveillance section for a surveillance area based on a surveillance time determined according to the importance set by the set PTZ preset information, analyzes an image captured according to the operation of the CCTV camera, calculates the number of appearances of moving objects in the surveillance section, and then updates the importance of the surveillance section based on the number of appearances of the moving objects.
The processor divides the specific surveillance section into multiple pieces so that it has the same surveillance time as the specific surveillance section when the average number of occurrences of moving objects in a specific surveillance section among the N surveillance sections is greater than or equal to the average number of occurrences in the entire surveillance area whenever a cycle for updating the importance arrives, or merges the divided surveillance sections when the average number of occurrences of moving objects in a specific surveillance section among the N surveillance sections is less than the average number of occurrences in the entire surveillance area whenever a cycle for updating the importance arrives.
The above processor performs at least one of merging between the divided surveillance sections created by dividing a specific surveillance section and performing merging between the divided surveillance section and another surveillance section adjacent to the divided surveillance section.
PTZ CCTV camera automatic control system.
In Article 7,
The above processor sets information on the shooting control cycle of the CCTV camera, information on the importance and corresponding surveillance weight for each of the divided surveillance sections, information on setting the criteria for the importance based on the average number of appearances of moving objects during the shooting control cycle, and information on the update cycle for updating the importance as the PTZ preset information.
PTZ CCTV camera automatic control system.
In Article 8,
The above processor controls the N surveillance sections to be monitored sequentially when the control mode of the CCTV camera according to the PTZ preset information is set to the sequential surveillance mode, and performs PTZ control so that the surveillance time of each surveillance section is different according to the surveillance weight set for each surveillance section.
PTZ CCTV camera automatic control system.
In Article 9,
The above processor operates the CCTV camera during a first surveillance period in a first surveillance section, and operates the CCTV camera during a second surveillance period in a second surveillance section that is continuous with the first surveillance section.
The above first and second surveillance times are calculated by reflecting the shooting control cycle to the first and second surveillance weights.
PTZ CCTV camera automatic control system.
In Article 8,
The above processor controls the N surveillance sections to be monitored randomly when the control mode of the CCTV camera according to the PTZ preset information is set to a random surveillance mode, and performs PTZ control so that the total surveillance time during which the CCTV camera makes a circle is different for each surveillance section according to the surveillance weight set for each surveillance section.
PTZ CCTV camera automatic control system.
In Article 11,
The above processor operates the CCTV camera during a shooting control period in a first surveillance section randomly determined among a plurality of surveillance sections, and after the operation of the CCTV camera in the first surveillance section is completed, operates the CCTV camera during a shooting control period in a second surveillance section randomly determined among the plurality of surveillance sections.
The CCTV camera is operated according to the shooting control cycle at least once to satisfy the first overall surveillance time in the first surveillance section while the CCTV camera is making a circle, and the CCTV camera is operated according to the shooting control cycle at least once to satisfy the second overall surveillance time in the second surveillance section.
PTZ CCTV camera automatic control system.

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