WO2022108127A1

WO2022108127A1 - Method and system for searching for stored cctv image based on photographing space information

Info

Publication number: WO2022108127A1
Application number: PCT/KR2021/014503
Authority: WO
Inventors: 양창모; 김동칠
Original assignee: 한국전자기술연구원
Priority date: 2020-11-18
Filing date: 2021-10-18
Publication date: 2022-05-27
Also published as: KR20220068038A

Abstract

Provided is a method for searching for a stored CCTV image based on photographing space information. The method comprises the steps of: storing, in a database, an image which has been captured via a CCTV installed in a certain photographing space; storing, in the database, photographing space information corresponding to the captured image; searching the database for the captured image according to a user's search request; and providing the image which has been searched for according to the search request, wherein in the step of storing, in the database, photographing space information corresponding to the captured image, photographing space information and photographing time information corresponding to the captured image are stored together in the database, and, in the step of searching the database for the captured image according to a user's search request, the captured image is searched for on the basis of the photographing space information and photographing time information.

Description

CCTV storage video search method and system based on shooting space information

The present invention relates to a method and system for searching CCTV stored images based on shooting space information, and to a method and system for more quickly and accurately searching for an image desired by a user from a plurality of CCTV stored images.

Recently, as various types of CCTVs with PTZ functions as well as fixed CCTVs have been actively used, technologies for quickly and accurately searching for a desired image by a user from a wide range of CCTV stored images are being actively studied.

In the case of the prior art, after selecting a CCTV located in a short distance of a space to be searched, a method of performing a time-based search in the selected CCTV and a method of performing an object feature-based search were mainly used.

Among the conventional methods, the method of performing time-based search in the selected CCTV has a disadvantage in that it takes a lot of time to search because the user has to check the stored images one by one.

In addition, the method of performing object feature-based search not only varies greatly in accuracy depending on the CCTV image quality and environmental factors, but in the case of CCTV with PTZ function, even if the user's interest space could not be captured at the time There is a limit to fast image search such as performing

An embodiment of the present invention provides a method and system for searching CCTV stored images based on photographing space information, which allows a user to more quickly and accurately search for an image desired by a user from a plurality of CCTV stored images by using photographing space information.

However, the technical task to be achieved by the present embodiment is not limited to the technical task as described above, and other technical tasks may exist.

As a technical means for achieving the above-mentioned technical problem, the method for retrieving a CCTV stored image based on photographing space information according to a first aspect of the present invention includes the steps of: storing an image photographed through a CCTV installed in a predetermined photographing space in a database; storing photographing space information corresponding to the photographed image in the database; searching for the captured image in the database according to a user's search request; and providing the searched image according to the search request. In this case, the storing of the photographing space information corresponding to the photographed image in the database includes storing photographing space information and photographing time information corresponding to the photographed image together in the database, and according to a user's search request, the In the searching for the captured image on the database, the captured image is searched for based on the photographing space information and the photographing time information.

Some embodiments of the present invention further include registering information of CCTV installed in a predetermined shooting space, wherein the CCTV information includes at least one of ID information, location information, installation direction information, and PTZ information of CCTV can do.

In some embodiments of the present invention, the step of storing the photographing space information corresponding to the photographed image in the database includes calculating the photographing space information based on at least one of the installation location, installation direction, and PTZ information of the CCTV. and can be stored.

In some embodiments of the present invention, the step of storing the photographing space information corresponding to the photographed image in the database comprises storing the photographing space information as up, down, left and right GPS coordinate values or center point GPS coordinates and radius information of the captured image of CCTV. can be expressed as

In some embodiments of the present invention, the step of retrieving the captured image on the database according to a user's search request comprises comparing spatial information and time information input by the user with the stored shooting space information and shooting time information, The captured image may be searched based on whether the comparison result matches.

In addition, the CCTV storage image search system based on the photographing space information according to the second aspect of the present invention includes a communication module for receiving an image photographed from at least one CCTV installed in a predetermined photographing space, a database for storing the photographed image, and a stored It includes a memory in which a program for searching for an image is stored and a processor that executes the program stored in the memory. In this case, as the processor executes the program, the photographing space information and photographing time information corresponding to the photographed image are stored in the database, and the photographing space information and the photographing time information are stored in the photographing space information and the photographing time information according to a user's search request. After searching for the captured image based on the search result, the searched image is provided according to the search request.

In some embodiments of the present invention, the processor calculates and stores the photographing space information based on at least one of the installation location, installation direction, and PTZ information of the CCTV, and stores the calculated and stored photographing space information in a vertical, horizontal, and vertical GPS position. It can be expressed as coordinate values or center point GPS coordinates and radius information of the CCTV footage.

In some embodiments of the present invention, the processor compares the spatial information and time information input by the user with the stored photographing spatial information and the photographing time information, and searches for the photographed image based on whether the comparison result matches. can

In addition to this, another method for implementing the present invention, another system, and a computer readable recording medium for recording a computer program for executing the method may be further provided.

According to the present invention as described above, a plurality of images captured by CCTV can be searched more quickly and accurately based on spatial information, and there is an advantage in that it is possible to quickly respond to accidents and the like.

In addition, it can be implemented in combination with the existing methods, and there is an advantage that an accurate and fast image search is possible through this.

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 following description.

1A and 1B are flowcharts of a method for searching CCTV stored images based on photographing space information according to an embodiment of the present invention.

2 is a view for explaining a CCTV storage eternal search system based on photographing space information according to an embodiment of the present invention.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction 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 only the present embodiments allow the disclosure of the present invention to be complete, and those of ordinary skill in the art to which the present invention pertains. It is provided to fully understand the scope of the present invention to those skilled in the art, and the present invention is only defined by the scope of the claims.

The terminology used herein is for the purpose of describing the embodiments 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. As used herein, “comprises” and/or “comprising” does not exclude the presence or addition of one or more other components in addition to the stated components. Like reference numerals refer to like elements throughout, and "and/or" includes each and every combination of one or more of the recited elements. Although "first", "second", etc. are used to describe various elements, these elements are not limited by these terms, of course. These terms are only used to distinguish one component from another. Accordingly, it goes without saying that the first component mentioned below may be the second component within the spirit of the present invention.

Unless otherwise defined, all terms (including technical and scientific terms) used herein will have the meaning commonly understood by those of ordinary skill in the art to which this invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless specifically defined explicitly.

On the other hand, the steps shown in FIGS. 1A and 1B may be understood to be performed by a server (hereinafter, referred to as a server) implementing the CCTV storage image search system 100 based on the shooting space information, but is not limited thereto.

First, after the CCTV is installed in a predetermined shooting space (S105), the server registers information of the CCTV installed in the predetermined shooting space (S110).

In one embodiment, the CCTV information to be registered may be designated by a user (administrator), and may include at least one of ID information, location information, installation direction information, and PTZ information of the CCTV.

After the CCTV information is registered, it waits for the user's input (S115), and if there is a user's input, the type of the user's input is determined (S120).

As a result of the determination, if the user's input corresponds to 'end', the server ends the CCTV installation process (S125).

On the other hand, if the user's input corresponds to 'action' as a result of the determination, the server stores the image captured through the CCTV in the database (S130).

In addition, the server stores the photographing space information corresponding to the photographed image in the database (S135). At this time, the server stores the shooting time information together with the shooting space information corresponding to the captured image in the database.

In one embodiment, the server may calculate and store the photographing space information based on at least one of the installation location, installation direction, and PTZ information of the CCTV.

In addition, according to an embodiment, the server may express the photographing space information as up, down, left and right GPS coordinate values or the center point GPS coordinates and radius information of the captured image of the CCTV.

As the photographing space information is stored in the database together with the photographed image in this way, the server waits for the user's input (S140).

Thereafter, when there is a user's input, the server determines the type of the user's input (S145).

As a result of the determination, if the user's input corresponds to 'end', the server ends the CCTV image search process (S150).

Contrary to this, when the user's input corresponds to 'search' as a result of the determination, the server searches the database for images captured through CCTV (S155).

In this case, the server may search the database for the captured image based on the photographing space information and the photographing time information. More specifically, for a CCTV image search based on shooting space information, a user uses GPS coordinate information for time information and spatial information as a search query. Accordingly, the server compares the time information and the spatial information input from the user with the CCTV shooting time information and the shooting space information stored in the database, and searches for the captured image based on whether the comparison result matches.

On the other hand, according to an embodiment of the present invention, the CCTV image search method based on the photographing space information may be used independently or may be used together with the existing object feature-based search method.

Next, the server provides the searched image to the user according to the search request (S160).

Meanwhile, in the above description, steps S105 to S160 may be further divided into additional steps or combined into fewer steps according to an embodiment of the present invention. In addition, some steps may be omitted if necessary, and the order between steps may be changed. In addition, the contents described in FIGS. 1A and 1B are also applied to the CCTV storage eternal life search system 100 based on the photographing space information of FIG.

Hereinafter, a CCTV storage eternal search system 100 based on photographing space information according to an embodiment of the present invention will be described.

2 is a view for explaining the CCTV storage eternal search system 100 based on the photographing space information according to an embodiment of the present invention.

The CCTV storage eternal search system 100 based on shooting space information according to an embodiment of the present invention includes a communication module 110 , a memory 120 , and a processor 130 .

The communication module 110 receives an image photographed from at least one CCTV installed in a predetermined photographing space.

Here, the communication module 110 may include both a wired communication module and a wireless communication module. The wired communication module may be implemented as 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 implemented with the above-described UNB, wireless LAN (WLAN), Bluetooth, HDR WPAN, UWB, ZigBee, Impulse Radio, 60GHz WPAN, Binary-CDMA, wireless USB technology, wireless HDMI technology, and the like.

The memory 120 stores a database for storing captured images and a program for retrieving the stored images, and the processor 130 executes the program stored in the memory.

In this case, the memory 120 collectively refers to a non-volatile storage device and a volatile storage device that continuously maintain stored information even when power is not supplied.

For example, the memory 120 may include a compact flash (CF) card, a secure digital (SD) card, a memory stick, a solid-state drive (SSD), and a micro SD card. NAND flash memory such as cards, magnetic computer storage devices such as hard disk drives (HDD), etc., and optical disk drives such as CD-ROMs and DVD-ROMs. can

The processor 130 stores the photographing space information and photographing time information corresponding to the photographed image in the database as the program is executed, and the image photographed based on the photographing space information and photographing time information according to a user's search request After searching for , the searched image is provided to the user according to the search request.

The CCTV storage eternal search method based on the photographing space information according to an embodiment of the present invention described above may be implemented as a program (or application) and stored in a medium in order to be executed in combination with a server that is hardware.

The above-described program is C, C++, JAVA, machine language, etc. that a processor (CPU) of the computer can read through a device interface of the computer in order for the computer to read the program and execute the methods implemented as a program It may include code (Code) coded in the computer language of Such code may include functional code related to a function defining functions necessary for executing the methods, etc., and includes an execution procedure related control code necessary for the processor of the computer to execute the functions according to a predetermined procedure. can do. In addition, this code may further include additional information necessary for the processor of the computer to execute the functions or code related to memory reference for which location (address address) in the internal or external memory of the computer should be referenced. have. In addition, when the processor of the computer needs to communicate with any other computer or server located remotely in order to execute the functions, the code uses the communication module of the computer to determine how to communicate with any other computer or server remotely. It may further include a communication-related code for whether to communicate and what information or media to transmit and receive during communication.

The storage medium is not a medium that stores data for a short moment, such as a register, a cache, a memory, etc., but a medium that stores data semi-permanently and can be read by a device. Specifically, examples of the storage medium include, but are not limited to, ROM, RAM, CD-ROM, magnetic tape, floppy disk, and an optical data storage device. That is, the program may be stored in various recording media on various servers accessible by the computer or in various recording media on the computer of the user. In addition, the medium may be distributed in a computer system connected to a network, and a computer-readable code may be stored in a distributed manner.

The steps of a method or algorithm described in relation to an embodiment of the present invention may be implemented directly in hardware, as a software module executed by hardware, or by a combination thereof. A software module may include random access memory (RAM), read only memory (ROM), erasable programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), flash memory, hard disk, removable disk, CD-ROM, or It may reside in any type of computer-readable recording medium well known in the art to which the present invention pertains.

As mentioned above, although embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art to which the present invention pertains know that the present invention may be embodied in other specific forms without changing the technical spirit or essential features thereof. you will be able to understand Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

Claims

A method performed by a computer comprising:

Storing the image taken through the CCTV installed in a predetermined shooting space in a database;

storing photographing space information corresponding to the photographed image in the database;

searching for the captured image in the database according to a user's search request; and

Comprising the step of providing a searched image according to the search request,

Storing the photographing space information corresponding to the photographed image in the database includes:

Storing the photographing space information and photographing time information corresponding to the photographed image together in the database,

The step of searching for the captured image on the database according to a user's search request includes:

Searching for the photographed image based on the photographing space information and the photographing time information,

A method of retrieving CCTV stored images based on shooting space information.
According to claim 1,

Further comprising the step of registering information of CCTV installed in a predetermined shooting space,

The CCTV information includes at least one of ID information, location information, installation direction information, and PTZ information of CCTV,

A method of retrieving CCTV stored images based on shooting space information.
According to claim 1,

Storing the photographing space information corresponding to the photographed image in the database includes:

Calculating and storing the shooting space information based on at least one of the installation location, installation direction, and PTZ information of the CCTV,

A method of retrieving CCTV stored images based on shooting space information.
According to claim 1,

Storing the photographing space information corresponding to the photographed image in the database includes:

The photographing space information is expressed by GPS coordinate values of up, down, left and right or center point GPS coordinates and radius information of the captured image of CCTV,

A method of retrieving CCTV stored images based on shooting space information.
According to claim 1,

The step of searching for the captured image on the database according to a user's search request includes:

Comparing spatial information and time information input from a user with the stored photographing space information and photographing time information, and searching for the photographed image based on whether the comparison result matches,

A method of retrieving CCTV stored images based on shooting space information.
In the CCTV storage image search system based on shooting space information,

A communication module for receiving an image photographed from at least one CCTV installed in a predetermined shooting space;

A database for storing the photographed image and a memory in which a program for retrieving the stored image is stored; and

Including a processor for executing the program stored in the memory,

The processor stores the photographing space information and photographing time information corresponding to the photographed image in the database as the program is executed, and based on the photographing space information and the photographing time information according to a user's search request, After searching for the photographed image, the searched image is provided according to the search request,

CCTV storage video retrieval system based on shooting space information.
7. The method of claim 6,

The processor calculates and stores the photographing space information based on at least one of the installation location, installation direction, and PTZ information of the CCTV, and uses the calculated and stored photographing space information as up, down, left and right GPS coordinate values or of the captured image of the CCTV. It is expressed by center point GPS coordinates and radius information,

CCTV storage video retrieval system based on shooting space information.
7. The method of claim 6,

The processor compares the spatial information and time information input by the user with the stored photographing space information and the photographing time information, and searches for the photographed image based on whether the comparison result matches,

CCTV storage video retrieval system based on shooting space information.