KR20110023634A - Apparatus for generating thumbnail image and method for displaying thumbnail image - Google Patents

Abstract

PURPOSE: An apparatus for generating and displaying a thumbnail image and a method thereof are provided to efficiently perform monitoring by generating thumbnail images and checking the thumbnail images in advance. CONSTITUTION: An apparatus for generating and displaying a thumbnail image comprises a thumbnail image generating unit(342) and an event search requesting unit(320). The thumbnail image generating unit for periodically generates a plurality of thumbnail images photographed by a camera after the generation of an event. The event search requesting unit requests an event search to a control server according to an event search condition.

Description

Apparatus for generating thumbnail image and method for displaying thumbnail image}

The present invention relates to a thumbnail image generating apparatus and a thumbnail image output method using the same.

Digital Video Recorder (DVR) converts analog image signals from multiple surveillance cameras into digital signals and compresses them, so that high-definition surveillance can be recorded for a long time, quick search, and clear playback. System.

These DVRs are installed in large-scale collective houses, museums, or banks where security is required, so that video can be recorded and recorded or outputted in real time on a screen, thereby finding an unexpected intruder or reporting an emergency situation.

In addition, various security equipment such as DVR, NVR (Network Video Recorder), IP camera, web camera, etc. are being released, and the number of cameras is increasing and the utilization of the security equipment is expanding. It can also detect the occurrence of and perform additional functions accordingly.

That is, the DVR may not record the entire video at all times, but only the video of the event. If a problem occurs in the future, the control personnel may search and play the video.

However, if a large amount of video recording is made on the DVR according to the occurrence of the event, there is a problem in that it takes time because the desired video can be found only by playing all of them.

Therefore, there is a need for more efficient video surveillance according to the occurrence of the event.

The present invention provides a thumbnail image generating device and a thumbnail image using the same to ensure efficient video surveillance by grasping the contents of the video in advance through a plurality of thumbnail images generated spaced apart from the video taken by the camera after the event occurs The purpose is to provide an output method.

In addition, the present invention provides a thumbnail image generating device that provides a quick search for information and playback of the image by requesting a search for the event information according to various event search conditions to the control server and providing the information as an event list, and this The purpose of the present invention is to provide a thumbnail image output method.

The present invention also provides a thumbnail image generating apparatus capable of executing the desired image reproduction more efficiently while at the same time grasping the contents of the image by reproducing the image of the corresponding event when at least one of the plurality of thumbnail images is selected. The purpose of the present invention is to provide a thumbnail image output method.

In order to achieve the above object, a thumbnail image generating apparatus according to an embodiment of the present invention comprises a thumbnail image generating unit for generating a plurality of thumbnail images spaced apart from the image taken by the camera after the event occurs; And a thumbnail mode display unit which displays a plurality of thumbnail images for each event on the screen.

The apparatus may further include an event search request unit requesting a control server to search for event information according to the event search condition.

The apparatus may further include an event list output unit configured to create an event list and display the event information received from the control server according to a search result of the event information on a screen.

The thumbnail image generator may generate the plurality of thumbnail images from an image corresponding to the corresponding event when at least one of the event list is selected.

The apparatus may further include an image reproducing unit configured to reproduce an image corresponding to the corresponding event when at least one of the plurality of thumbnail images is selected.

On the other hand, the thumbnail image output method according to an embodiment of the present invention comprises the steps of generating a plurality of thumbnail images (thumbnail image) spaced apart from the image taken by the camera after the event occurs (a); And (b) displaying a plurality of thumbnail images on the screen for each event.

In the step (a), requesting the control server to search for event information according to an event search condition; and writing the event information received from the control server into an event list according to a search result of the event information as a list of events Marking on; And generating at least one thumbnail image from an image corresponding to the corresponding event when at least one of the event list is selected.

The method may further include reproducing an image corresponding to the corresponding event when at least one of the plurality of thumbnail images is selected.

According to the thumbnail image generating apparatus and a thumbnail image output method using the same according to the present invention has the following advantages.

First, the present invention has an advantage of enabling efficient video surveillance by preliminarily grasping the contents of a corresponding video through a plurality of thumbnail images generated spaced apart from the video taken by the camera after an event occurs.

In particular, since the rate at which a predetermined event is generally performed at several second intervals after an event occurrence is generally high, a plurality of thumbnail images are generated and output at intervals of, for example, 1 second, 3 seconds, 5 seconds, etc. after the event occurs. This eliminates the hassle of having to check the contents of the event by replaying the image one by one, and intuitively grasping the contents of the event through multiple thumbnail images.

Second, the present invention also has a merit of providing a quick information search and video playback for a specific event by requesting a search for event information according to various event search conditions and providing the information as an event list.

Third, when the at least one of the plurality of thumbnail images is selected, the present invention may replay the video of the corresponding event to grasp the contents of the video in advance and to more efficiently execute the desired video playback.

Advantages and features of the present invention, and methods for achieving them will be 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 forms, and only the embodiments of the present invention make the disclosure of the present invention complete and the general knowledge in the technical field to which the present invention belongs. It is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

1 is a conceptual diagram of a video surveillance system according to an embodiment of the present invention.

As shown in FIG. 1, the video surveillance system of the present invention is an IP video surveillance system 12, an analog video surveillance system 14, a control server 100, a network video recorder 200, a control PC (Personal Computer). (300).

Here, the IP video surveillance system 12 may transmit and receive data to and from the control server 100 through the network video recorder 200, and the analog video surveillance system 14 is directly connected to the control server 100 to transmit data. Can send and receive In addition, only one system of the IP video surveillance system 12 and the analog video surveillance system 14 may be used to perform video surveillance through interworking with the network video recorder 200 and the control server 100. to be.

After the event, the video captured by the cameras installed in the IP video surveillance system 12 and the analog video surveillance system 14 and information about the corresponding event are transmitted to the network video recorder 200 and the control server 100. Can be.

Meanwhile, the network video recorder 200 is an integrated video storage device. For example, the network video recorder 200 receives and stores an image captured after an event occurs from a camera connected to a DVR and a network (eg, an IP camera, a web camera, etc.), and a control server. The image retrieved in cooperation with the control 100 and the control PC 300 may be transmitted to the control server 100 or the control PC 300. Here, the network video recorder 200 may be configured as a separate video storage device or included in the control server 100.

The control server 100 is an integrated event management apparatus. For example, the control server 100 receives and stores information about an event (ie, event information) from a camera linked with a DVR and a network, and stores the network video recorder 200 and the control PC 300. It works in conjunction with). The event information may include information about an event type, a camera ID of capturing a corresponding image after an event occurs, an event occurrence time, and a shooting location.

In this case, the control server 100 may search for event information according to the event search condition received from the control server 100 and transmit the event information to the control PC 300.

In addition, the control server 100 may transmit the event information to the control PC 300, and upon request of the control PC 300 may request the network video recorder 200 an image of the event.

In addition, the control server 100 may automatically assign event information to each control PC 300 according to the business rules of the control PC (300).

Meanwhile, the control PC 300 receives the event information and outputs it to the screen as an event list, and when a control agent clicks a specific event in the event list, the plurality of thumbnails receive the video corresponding to the event and spaced apart in time. The image is generated and the generated plurality of thumbnail images are output on the screen in a predetermined form.

Here, the thumbnail image may be displayed for each event, and the control agent may grasp the contents of the image at once through the thumbnail images spaced apart (for example, 1 second, 3 seconds, 5 seconds,…, etc.). It can alleviate the inconvenience of having to play all the events, and perform effective work processing for a large number of events.

In the video reception, the control PC 300 requests the video corresponding to the event through the control server 100 to the network video recorder 200, or the control PC 300 directly to the event to the network video recorder 200. You can request a corresponding video.

In this case, the control server 100 may receive an image from the network video recorder 200 and transmit the image to the control PC 300 or the network video recorder 200 may directly transmit the image corresponding to the event to the control PC 300. .

When the control agent selects at least one of the thumbnail images, the video corresponding to the corresponding event is played on the screen, and the control server 100 receives and manages the result information according to the event processing.

Hereinafter, the functions performed by the control PC 300 described above with reference to FIG. 2 will be described in more detail.

2 is a block diagram of a thumbnail image generating apparatus according to an embodiment of the present invention.

As shown in FIG. 2, the thumbnail image generating apparatus 301 may include a communication unit 310, an event search requesting unit 320, an event list output unit 330, a thumbnail image processing unit 340, and an image reproducing unit 350. And a storage unit 360, the thumbnail image generating apparatus 301 may be implemented as a predetermined module in the control PC 300.

The communication unit 310 communicates with the control server 100, the network video recorder 200, and various other external devices, and transmits and receives data.

The event search request unit 320 requests the control server 100 to search for event information according to the event search condition. That is, the event search request unit 320 receives an event search condition through a date, time, camera, event type, or keyword search, and requests the control server 100 to search for event information. For example, when a control agent inputs a specific camera ID and date and clicks a search button, the event search request unit 320 transmits the corresponding event search condition to the control server 100, and the control server 100 receives the event search condition. Extract the event information according to the transmission to the control PC (300).

The event list output unit 330 prepares the event information received from the control server 100 as an event list and outputs it to the screen. For example, when the control server 100 extracts the event information related to the camera ID # 10 and transmits it to the control PC 300 according to a search request for the camera ID # 10, the event list output unit 330 receives the received information. Event information can be created as an event list and displayed on the screen.

In this case, in another embodiment, the event information extracted by the control server 100 may be generated as an event list and transmitted to the control PC 300.

The thumbnail image processor 340 generates a plurality of thumbnail images from the image and outputs them to the screen, and includes a thumbnail image generator 342 and a thumbnail mode display unit 344.

The thumbnail image generator 342 generates a plurality of thumbnail images spaced apart from images captured by the camera after an event occurs. Here, when at least one of the event list is selected, the thumbnail image generator 342 may receive a video corresponding to the corresponding event and generate a plurality of thumbnail images from the corresponding video.

For example, if any one of the event list for the camera ID # 10 is selected, the thumbnail image generator 342 uses the camera ID, the date, the type of the event, and the like as the search keyword in the corresponding event (information). Alternatively, the network video recorder 200 requests a corresponding image, and generates a plurality of thumbnail images to be spaced apart from the received image in time.

In this case, the control server 100 may receive an image from the network video recorder 200 and transmit the image to the control PC 300 or the network video recorder 200 may directly transmit the image corresponding to the event to the control PC 300. .

The thumbnail mode display unit 344 outputs a plurality of thumbnail images generated from the thumbnail image generator 342 to the screen. In this case, the thumbnail mode display unit 344 may display a plurality of thumbnail images for each event on the screen. Please refer to FIG. 5 to be described later with respect to the shape of the thumbnail image output for each event.

The image reproducing unit 350 reproduces an image corresponding to the corresponding event. For example, when at least one of the plurality of thumbnail images is selected, the image reproducing unit 350 may reproduce an image corresponding to the corresponding event.

In addition, when a plurality of thumbnail images are selected for each event, the image reproducing unit 350 may simultaneously play the images corresponding to the respective events through the plurality of playback windows.

The storage unit 360 stores the plurality of thumbnail images generated by the thumbnail image generator 342 for each event. Accordingly, the image reproducing unit 350 described above may reproduce the image corresponding to the event by calling the storage unit 360 or receiving the image corresponding to the event from the control server 100 or the network video recorder 200. In addition, the storage 360 may store various data (for example, event information, etc.) and various setting values transmitted and received through the communication 310.

3 is a flowchart of a thumbnail image output method according to an exemplary embodiment.

First, the event search request unit 320 requests the control server 100 to search for event information according to an event search condition (S301). For example, the event search request unit 320 may receive an event search condition through a date, time, camera, event type, or keyword search and request the search server 100 to search for event information.

Next, the event list output unit 330 creates the event information received from the control server 100 as an event list according to the search result for the event information and displays it on the screen (S311).

Next, when at least one of the event list is selected, the thumbnail image generator 342 generates a plurality of thumbnail images from the image corresponding to the corresponding event (S321).

Then, the thumbnail mode display unit 344 displays the plurality of thumbnail images on the screen for each event (S331).

Thereafter, when at least one of the plurality of thumbnail images is selected, the image reproducing unit 350 reproduces the image corresponding to the corresponding event (S341).

4 illustrates an event list according to an embodiment of the present invention.

The control server 100 may search for event information according to the event search condition received from the control PC 300 and transmit the event information to the corresponding control PC 300. As shown in FIG. 4, the screen of the control PC 300 is displayed. The event list 400 output to the camera ID 401, the event type 402, the shooting location 403, and the event occurrence time 404 may be included in the event list 400. In addition, the event list 400 may also include image analysis events (Tripwire, Loitering, Object Detection, etc.).

In this case, when the control agent selects any one 405 of the event list 400, a plurality of thumbnail images corresponding to the corresponding event may be output to a new pop-up window.

In addition, when a plurality of events are selected in the event list 400, a plurality of thumbnail images may be generated from an image corresponding to the selected event and output on the screen.

In addition, the control server 100 may transmit the event (information) in real time to the corresponding control PC 300 according to the event distribution rules, in this case, if the control agent selects any one of the event list received in real time corresponding thereto A plurality of thumbnail images to be output on the screen.

Hereinafter, the output form of the thumbnail image will be described in more detail with reference to FIG. 5.

5 illustrates a thumbnail image output form according to an embodiment of the present invention.

As shown in (a) and (b) of FIG. 5, a plurality of thumbnail images may be output in a predetermined form for each event, and when one of the thumbnail images is selected, an image for the corresponding event may be played on the screen. have.

In addition, although the above-described event list 400 is output on the screen in a text form, a plurality of thumbnail images corresponding to each event may be directly output on the screen in the form of FIG. 5 for each event. That is, the control PC 300 may receive event information assigned to the user in real time, receive images corresponding to each event, generate a plurality of thumbnail images from the corresponding image, and output the screen image for each event.

In addition, as described above, when at least one event is selected in the event list 400, a plurality of thumbnail images may be generated from the corresponding image and output on the screen in the form of FIG. 5.

Therefore, the contents of the corresponding video can be grasped in advance through the plurality of thumbnail images generated in time apart, thereby achieving more efficient video surveillance.

The above-described storage unit 360 of FIG. 2 may include a cache, a read only memory (ROM), a programmable ROM (PROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), and a flash memory. A volatile memory device such as a volatile memory device or a random access memory (RAM), or a storage medium such as a hard disk drive (HDD) or a CD-ROM may be implemented, but is not limited thereto.

In addition, each component illustrated in FIG. 2 may be configured as a kind of 'module'. The 'module' refers to a hardware component such as software or a field programmable gate array (FPGA) or an application specific integrated circuit (ASIC), and the module plays a role. However, modules are not meant to be limited to software or hardware. A module may be configured to reside on an addressable storage medium and may be configured to execute one or more processors. The functionality provided by the components and modules may be combined into a smaller number of components and modules or further separated into additional components and modules.

Although embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. I can understand that. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

1 is a conceptual diagram of a video surveillance system according to an embodiment of the present invention.

2 is a block diagram of a thumbnail image generating apparatus according to an embodiment of the present invention.

3 is a flow chart of a thumbnail image output method according to an embodiment of the present invention.

4 is an event list according to an embodiment of the present invention.

5 is a thumbnail image output form according to an embodiment of the present invention.

<Explanation of symbols on main parts of the drawings>

100: control server

200: network video recorder

300: control pc

301: thumbnail image generating device 310: communication unit

320: event search request unit 330: event list output unit

340: thumbnail image processing unit 342: thumbnail image generation unit

344: thumbnail mode display unit 350: video playback unit

360: storage

Claims (8)

A thumbnail image generator for generating a plurality of thumbnail images spaced apart from images captured by a camera after an event occurs; And And a thumbnail mode display unit configured to display the plurality of thumbnail images for each event on a screen. The method of claim 1, And an event search request unit for requesting a control server to search for event information according to an event search condition. 3. The method of claim 2, And an event list output unit configured to create an event list and display the event information received from the control server on a screen. The method of claim 3, wherein The thumbnail image generation unit, when at least one of the event list is selected, characterized in that for generating a plurality of thumbnail images from the image corresponding to the event, thumbnail image generating apparatus. The method according to any one of claims 1 to 4, And at least one image reproducing unit reproducing an image corresponding to the corresponding event when at least one of the plurality of thumbnail images is selected. (A) generating a plurality of thumbnail images spaced apart from images captured by the camera after an event occurs; And And (b) displaying the plurality of thumbnail images on a screen for each event. The method of claim 6, wherein step (a) Requesting a control server to search for event information according to an event search condition; Creating an event list on the screen by generating the event information received from the control server according to a search result of the event information; And And generating at least one thumbnail image from an image corresponding to the corresponding event when at least one of the event list is selected. The method according to claim 6 or 7, If at least one of the plurality of thumbnail images is selected, further comprising the step of playing the video corresponding to the event, thumbnail image output method.

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