KR101538978B1 - Surveillance camera apparatus and method for detecting abnormality of infrared light source by using the same - Google Patents

Abstract

Disclosed is a method for detecting abnormality of an infrared LED light source in accordance with an embodiment of the preset invention. The method for detecting abnormality of an infrared LED light source, included in a surveillance camera apparatus which can be applied to a self-diagnosis system that notifies the status of the surveillance camera apparatus to a control center, comprises: a step of photographing an image using the surveillance camera apparatus; a step of determining a brightness value of the photographed image; and a step of detecting whether a plurality of infrared LED light sources are operated abnormally by comparing the determined brightness value with a preset reference brightness value.

Description

TECHNICAL FIELD [0001] The present invention relates to a surveillance camera device and a method of detecting an abnormality of an infrared LED light source using the surveillance camera device. [0002]

The present invention relates to a sensing camera apparatus and a method of detecting an abnormality of an infrared LED (light emitting diode) light source using the same. More particularly, the present invention relates to a surveillance camera device that determines the brightness value of a photographed image and self-diagnoses whether an infrared LED light source mounted on the surveillance camera device is abnormal, and a method of detecting an abnormality of an infrared LED light source using the surveillance camera device .

A typical surveillance camera device includes an infrared LED light source that provides infrared illumination to a subject to be photographed. Since the power supplied to the camera part of the surveillance camera device passes through the regulator, the voltage is very stable, but the power supplied by the infrared LED light source does not pass through the regulator, so the voltage is often unstable.

Thus, infrared LED light sources often fail due to unstable power or heat generated by the provision of illumination. In addition to the failure of the infrared LED light source, the amount of light (light amount) may gradually decrease due to accumulation of the use time of the infrared LED light source.

Since the probability of crime at night is much higher than the probability of crime during the day, it is very important to secure a night image in a security system using a surveillance camera device. The infrared LED light source included in the surveillance camera device applied to such a security system is used to secure a clearer image at night. If the amount of light of the infrared LED light source is gradually decreased, it becomes difficult to secure a clear night image, And it becomes difficult to discriminate or identify the night crime.

Although a general surveillance camera has an automatic exposure control function that automatically adjusts the exposure according to the external brightness or brightness, the captured image is corrected by applying a constant gain value to the captured image. However, It is difficult to grasp the deterioration or failure of the infrared LED light source. In addition, if the image photographed by the automatic exposure control function is corrected, the quality of the image deteriorates, making it difficult to precisely monitor the image, and there is a possibility that an error occurs in the video analysis.

Accordingly, there is a need for an efficient method of self-diagnosing whether an infrared LED light source attached to the surveillance camera device is abnormal.

A surveillance camera apparatus and a method of detecting an abnormality of an infrared LED light source using the same according to an embodiment of the present invention are intended to make it easy for the user to recognize whether or not an error has occurred in an infrared LED light source.

A surveillance camera device and a method of detecting an abnormality of an infrared LED light source using the same according to an embodiment of the present invention are intended to inform a user of an error of an infrared LED light source in which part.

A method of detecting an abnormality of an infrared LED light source according to an embodiment of the present invention includes detecting an abnormality of an infrared LED light source included in a surveillance camera device applicable to a self- The method comprising: capturing an image using the surveillance camera device; Determining a brightness value of the photographed image; And comparing the determined brightness value with a preset reference brightness value to detect an abnormality of the plurality of infrared LED light sources.

Wherein when the light amount of the plurality of infrared LED light sources corresponding to the determined brightness value is smaller than the light amount of the plurality of infrared LED light sources corresponding to the predetermined reference brightness value, And detecting that an abnormality has occurred.

The detecting may include detecting that an abnormality has occurred in the plurality of infrared LED light sources when the use time of the plurality of infrared LED light sources exceeds a predetermined time.

The method of detecting an abnormality of the infrared LED light source may further include outputting the detection result when an abnormality is detected in the plurality of infrared LED light sources.

Wherein the determining step comprises: obtaining an automatic exposure setting value applied to the photographed image; And determining a brightness value of the photographed image based on the obtained automatic exposure setting value.

Wherein the determining comprises: dividing the photographed image into a plurality of regions; And determining a brightness value of each of the plurality of divided regions, wherein the sensing includes dividing the plurality of infrared LED light sources into a plurality of sets of infrared LED light sources for providing illumination in each of the plurality of regions ; Comparing a brightness value of each of a plurality of regions of the photographed image with a reference brightness value of each of a plurality of regions of a previously stored reference image; And detecting an abnormality in each of the plurality of infrared LED light source sets based on the comparison result.

The method of detecting an abnormality of the infrared LED light source may further include outputting information on an infrared LED light source set detected as an abnormality in the plurality of infrared LED light source sets.

Wherein the determining comprises: dividing the photographed image into a plurality of regions; And determining a brightness value of each of the plurality of divided regions, wherein the sensing includes dividing the plurality of infrared LED light sources into a plurality of sets of infrared LED light sources for providing illumination in each of the plurality of regions ; Obtaining a brightness value difference between a brightness value of each of a plurality of regions of the photographed image and a reference brightness value of each of a plurality of regions of a previously stored reference image; Calculating a light amount deviation for each of the plurality of infrared LED light source sets from the obtained difference in brightness value; And detecting an abnormality of each of the plurality of infrared LED light source sets based on the calculated light amount deviation.

The obtaining of the brightness value difference may include obtaining the brightness value difference using the brightness histogram of the photographed image and the brightness histogram of the previously stored reference image.

Wherein the photographing step includes photographing a plurality of images using the surveillance camera device, and the determining step includes a step of determining a brightness value of each of the plurality of photographed images, A method of detecting an abnormality of an infrared LED light source, the method comprising: dividing the plurality of infrared LED light sources into a plurality of infrared LED light source sets for providing illumination in each of the plurality of regions; And determining a remaining lifetime of each of the plurality of infrared LED light source sets based on brightness values of respective regions of the plurality of captured images.

The method of detecting an abnormality of the infrared LED light source may further include outputting a remaining life of each of the plurality of infrared LED light source sets.

A computer program for executing the method of detecting an abnormality of the infrared LED light source may be recorded on a computer-readable recording medium.

A surveillance camera apparatus according to an embodiment of the present invention includes:

A surveillance camera device applicable to a self-diagnosis system that notifies a status of a surveillance camera device to a management center, comprising: a camera section for capturing an image; A plurality of infrared LED light sources for providing infrared light to an object to be imaged when the camera unit captures the image; A brightness value determining unit for determining a brightness value of the photographed image; And an abnormality detection unit for comparing the determined brightness value with a predetermined reference brightness value to detect an abnormality of the plurality of infrared LED light sources.

Wherein the abnormality detecting unit detects the lightness of the plurality of infrared LED light sources when the light amount of the plurality of infrared LED light sources corresponding to the determined brightness value is smaller than the light amount of the plurality of infrared LED light sources corresponding to the predetermined reference brightness value It can be detected that an abnormality has occurred.

The abnormality detection unit may detect that an abnormality has occurred in the plurality of infrared LED light sources when the use time of the plurality of infrared LED light sources exceeds a preset time.

The surveillance camera apparatus may further include an output unit for outputting the detection result when the abnormality sensing unit detects that an abnormality has occurred in the plurality of infrared LED light sources.

The brightness value determining unit may obtain an automatic exposure setting value applied to the photographed image and determine a brightness value of the photographed image based on the obtained automatic exposure setting value.

Wherein the brightness value determining unit determines the brightness value of each of the plurality of divided regions by dividing the photographed image into a plurality of regions and the abnormality sensing unit is configured to determine the brightness value of each of the plurality of divided infrared LED light sources, And a plurality of sets of infrared LED light sources for providing illumination; comparing brightness values of each of a plurality of regions of the photographed image with reference brightness values of a plurality of regions of a previously stored reference image; Thereby detecting an abnormality of each of the plurality of infrared LED light source sets.

The surveillance camera apparatus may further include an output unit for outputting information on a set of infrared LED light sources detected as an abnormality in the plurality of infrared LED light source sets.

Wherein the brightness value determining unit determines the brightness value of each of the plurality of divided regions by dividing the photographed image into a plurality of regions and the abnormality sensing unit is configured to determine the brightness value of each of the plurality of divided infrared LED light sources, Obtaining a brightness value difference between a brightness value of each of a plurality of regions of the photographed image and a reference brightness value of each of a plurality of regions of a previously stored reference image, Calculates a light amount deviation for each of the plurality of infrared LED light source sets from the obtained difference in brightness value and detects an abnormality of each of the plurality of infrared LED light source sets based on the calculated light amount deviation.

The abnormality detection unit may obtain the brightness value difference using the brightness histogram of the photographed image and the brightness histogram of the previously stored reference image.

Wherein the camera section photographs a plurality of images, and the brightness value determining section determines a brightness value for each of the plurality of captured images, wherein the abnormality detecting section detects the brightness of the plurality of infrared LED light sources And a remaining lifetime of each of the plurality of infrared LED light source sets may be determined based on the brightness value of each of the plurality of captured images.

The surveillance camera apparatus may further include an output unit outputting a remaining lifetime of each of the plurality of infrared LED light source sets.

In the surveillance camera system according to another embodiment of the present invention,

A surveillance camera system for notifying a state of a surveillance camera device to a management center, the surveillance camera system comprising: a surveillance camera device for providing infrared light to an object to be imaged when the image is imaged; And a control server for determining a brightness value of the photographed image and comparing the determined brightness value with a preset reference brightness value to detect an abnormality of the plurality of infrared LED light sources.

The surveillance camera apparatus according to an embodiment of the present invention and the method of detecting an abnormality of an infrared LED light source using the same can easily recognize whether an error occurs in an infrared LED light source.

In addition, the surveillance camera apparatus according to an embodiment of the present invention and the method of detecting an abnormality of the infrared LED light source using the same make it easy for the user to know which part of the infrared LED light source has occurred.

1 is a diagram showing a general self-diagnosis system.
2 (a) and 2 (b) are views showing a surveillance camera apparatus according to an embodiment of the present invention.
3 is a flowchart showing a procedure of a method of detecting an abnormality of an infrared LED light source according to an embodiment of the present invention.
4 is a flowchart showing a procedure of a method of detecting an abnormality of an infrared LED light source according to another embodiment of the present invention.
FIG. 5 (a) is a view showing an image divided into a plurality of regions, and FIG. 5 (b) is a diagram showing a surveillance camera device including an infrared LED light source divided into a plurality of sets of infrared LED light sources.
6 (a) is a brightness histogram of a previously stored reference image, and FIG. 6 (b) is a brightness histogram of an image captured by a surveillance camera apparatus according to an embodiment of the present invention.
7 is a block diagram showing the configuration of a surveillance camera device according to an embodiment of the present invention.
8 is a block diagram showing the configuration of a surveillance camera system according to another embodiment of the present invention.

Brief Description of the Drawings The advantages and features of the present invention, and how to accomplish them, will become apparent with reference to the embodiments described hereinafter with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. Also, in certain cases, there may be a term selected arbitrarily by the applicant, in which case the meaning thereof will be described in detail in the description of the corresponding invention. Therefore, the term used in the present invention should be defined based on the meaning of the term, not on the name of a simple term, but on the entire contents of the present invention.

When an element is referred to as "including" an element throughout the specification, it is to be understood that the element may include other elements as well, without departing from the spirit or scope of the present invention. Also, as used herein, the term "part " refers to a hardware component such as software, FPGA or ASIC, and" part " However, "part" is not meant to be limited to software or hardware. "Part" may be configured to reside on an addressable storage medium and may be configured to play back one or more processors. Thus, by way of example, and not limitation, "part (s) " refers to components such as software components, object oriented software components, class components and task components, and processes, Subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays and variables. The functions provided in the components and "parts " may be combined into a smaller number of components and" parts " or further separated into additional components and "parts ".

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. In order to clearly explain the present invention in the drawings, parts not related to the description will be omitted.

1 is a diagram showing a general self-diagnosis system.

1, a general self-diagnosis system includes a surveillance camera 10, a management center 20, and a surveillance camera field control device 30. The surveillance camera field control device 30 may be embedded in the surveillance camera 10 or may be located externally.

The surveillance camera 10 captures an image and transmits the captured image to the management center 20. The surveillance camera field control device 30 receives an image transmitted from the surveillance camera 10 to the management center 20 and determines whether or not an abnormality has occurred in the surveillance camera 10. [

The surveillance camera field control device 30 transmits a result of the abnormality determination to the surveillance camera 10 through a self-diagnosis dedicated network network separate from the network to which the surveillance camera 10 and the management center 20 are connected, (20). This is because an error may have occurred in the network network itself to which the surveillance camera 10 and the management center 20 are connected.

The management center 20 outputs the result of the abnormality determination transmitted from the surveillance camera field control device 30 so that the user can recognize whether or not the surveillance camera 10 is abnormal.

The general self-diagnosis system shown in FIG. 1 performs only a self-diagnosis based on hardware functions such as correct transmission of images, power state of the surveillance camera 10, and communication state. Therefore, There is a problem in that a substantial self-diagnosis is not performed.

2 (a) and 2 (b) are views showing a surveillance camera apparatus 100 according to an embodiment of the present invention.

2 (a), a surveillance camera apparatus 100 according to an embodiment of the present invention includes a camera unit 110, a plurality of infrared LED light sources 130, and a housing 150.

The housing 150 functions to protect the camera 110 or the infrared LED light source 130, and may be made of a material having a waterproof and moisture-proof function.

The camera unit 110 is provided inside the housing 150 to photograph an object or a subject, and may include a lens unit (not shown) and a CCD sensor unit (not shown).

The infrared LED light source 130 outputs infrared light to an imaging region including an object to be imaged. The subject photographed by the camera unit 110 can be clearly recognized through infrared light.

For example, the infrared LED light source 130 may be disposed around the camera unit 110 as shown in FIG. 2A, or the infrared LED light source 130 may be disposed around the camera 110 as shown in FIG. 2 (b) (110). That is, the camera unit 110 and the housings 160 and 170 may be provided.

Although not shown in FIGS. 2 (a) and 2 (b), the surveillance camera apparatus 100 according to an embodiment of the present invention may include the surveillance camera field control apparatus 30 shown in FIG. 1 And may transmit the result of the self-diagnosis to the management center 20 via a separate network.

3 is a flowchart showing a procedure of a method of detecting an abnormality of the infrared LED light source 130 according to an embodiment of the present invention.

In step S210, the surveillance camera apparatus 100 captures an image of the object to be imaged or the imaged area.

In step S220, the surveillance camera apparatus 100 determines the brightness value of the photographed image. The surveillance camera apparatus 100 can confirm the brightness value of the photographed image based on the automatic exposure setting value set for the photographed image by the camera unit 110. [ In addition, the surveillance camera apparatus 100 may determine the brightness value of the photographed image based on the white balance adjustment value adjusted by the surveillance camera apparatus 100. [ In addition, the surveillance camera apparatus 100 may determine the brightness value of the photographed image by using the brightness histogram of the photographed image.

In step S230, the surveillance camera apparatus 100 compares the photographed image brightness value with a preset reference brightness value.

In step S240, the surveillance camera apparatus 100 can detect whether or not an abnormality has occurred in the plurality of infrared LED light sources 130 based on the comparison result in step S230.

For example, the surveillance camera apparatus 100 may be configured such that the amount of light of a plurality of infrared LED light sources 130 corresponding to the brightness value of the photographed image is smaller than a light amount of a plurality of infrared LED light sources 130 corresponding to a predetermined reference brightness value It is possible to detect that a plurality of infrared LED light sources 130 are abnormal.

The surveillance camera device 100 stores the time when the plurality of infrared LED light sources 130 are mounted on the surveillance camera device 100 and when the use time of the plurality of infrared LED light sources 130 exceeds a preset time , It may be detected that an abnormality has occurred in the plurality of infrared LED light sources 130. This is because the amount of light becomes smaller as the use time of a plurality of infrared LED light sources 130 becomes longer.

When the surveillance camera apparatus 100 detects that an abnormality has occurred in the plurality of infrared LED light sources 130, the surveillance camera apparatus 100 outputs the detection result through an output unit such as a display and a speaker, You can tell whether or not you are aware of it.

Steps S220, S230, and S240 may be performed by a control server connected to the network 100 in addition to the surveillance camera 100 according to an embodiment of the present invention.

That is, unlike a general self-diagnosis system, the method of detecting an abnormality of the infrared LED light source 130 according to an embodiment of the present invention does not merely determine a hardware abnormality, It is possible to construct a more complete self-diagnosis system by integrating with the existing self-diagnosis system which confirms the transmission of image frames, the power state of the apparatus, the normal state of the apparatus, and the abnormality of the network.

4 is a flowchart showing a procedure of a method of detecting an abnormality of the infrared LED light source 130 according to another embodiment of the present invention.

In step S310, the surveillance camera apparatus 100 captures an image of the object to be imaged or the imaged area.

In step S320, the surveillance camera apparatus 100 divides the photographed image into a plurality of areas. 5 (a) shows an image 400 divided into a plurality of regions, and FIG. 5 (a) shows nine regions (a, b, c, d, e, f, g, As shown in FIG.

In step S330, the surveillance camera apparatus 100 determines the brightness value of each of the plurality of areas of the photographed image.

In step S340, the surveillance camera apparatus 100 divides a plurality of infrared LED light sources 130 into a plurality of sets of infrared LED light sources that provide illumination in each of a plurality of regions of the photographed image.

5B is a diagram showing a surveillance camera apparatus 100 including an infrared LED light source 130 divided into a plurality of sets of infrared LED light sources. The nine regions a, (A, B, C, D, E, F, G, H, I) that provide illumination with the illuminated LEDs b, c, d, e, .

In step S350, the surveillance camera apparatus 100 compares the brightness value of each of the plurality of areas of the photographed image with the reference brightness value of each of the plurality of areas of the previously stored reference image. The surveillance camera apparatus 100 uses the brightness histogram of the photographed image and the brightness histogram of the previously stored reference image to calculate brightness values of each of a plurality of regions of the photographed image and reference brightness values Can be compared.

For example, the surveillance camera apparatus 100 can obtain brightness values of the photographed image through the brightness histogram of the reference image shown in FIG. 6 (a) and the brightness histogram of the photographed image shown in FIG. 6 (b) The brightness values of the reference image can be compared with each other. Specifically, the surveillance camera apparatus 100 compares the brightness histogram of the reference image with the brightness histogram of the photographed image, and determines that the brightness value 62 of a part of the photographed image matches the brightness value 61 of a part of the reference image .

Alternatively, the surveillance camera apparatus 100 may obtain brightness value differences between the brightness values of each of the plurality of regions of the photographed image and the reference brightness values of the plurality of regions of the previously stored reference image.

In step S360, the surveillance camera apparatus 100 detects the abnormality of each of the plurality of infrared LED light source sets based on the comparison result of step S350.

For example, the surveillance camera apparatus 100 may be configured such that the light amount of the first infrared LED light source set corresponding to the brightness value of the first area of the photographed image is smaller than the first brightness value of the first region of the previously stored reference image If it is smaller than the light amount of the infrared LED light source set, it can be detected that an abnormality has occurred in the first infrared LED light source set.

Alternatively, in step S350, if the brightness value difference between the brightness values of the plurality of regions of the captured image and the reference brightness values of the plurality of regions of the previously stored reference image is obtained, It is also possible to calculate the light amount deviations for each of the plurality of infrared LED light source sets from the difference in brightness values obtained and to detect the abnormality of each of the plurality of infrared LED light source sets based on the calculated light amount deviation.

In step S370, the surveillance camera apparatus 100 outputs information on the infrared LED light source set detected as an abnormality in the plurality of infrared LED light source sets through an output unit such as a display, a speaker, or the like. Accordingly, the user can know which of the plurality of infrared LED light sources 130 has an abnormality in the infrared LED light source 130.

Steps S320 to S370 may be executed by the control server 100 connected to the network 100 in addition to the surveillance camera 100 according to an embodiment of the present invention.

Meanwhile, the surveillance camera apparatus 100 according to an embodiment of the present invention may predict the remaining service life of a plurality of infrared LED light sources 130 mounted on the surveillance camera apparatus 100, and output the estimated remaining service life.

Specifically, the surveillance camera apparatus 100 captures a plurality of images in accordance with time, and determines brightness values for respective areas of the captured plurality of images. Next, the surveillance camera apparatus 100 divides a plurality of infrared LED light sources 130 into a plurality of sets of infrared LED light sources for providing illumination in each of a plurality of regions, The remaining lifetime of each of the plurality of infrared LED light source sets may be determined.

For example, by determining the brightness value of each of the first regions of the plurality of images, and comparing the amounts of light of the first infrared LED light source sets provided with the first region illumination for each of the plurality of images, The remaining life of the set can be predicted.

The surveillance camera apparatus 100 may output information on the remaining life of each of the plurality of infrared LED light source sets through a display or a printer to provide information to the user as to when to replace a plurality of sets of infrared LED light sources.

7 is a block diagram showing a configuration of a surveillance camera apparatus 600 according to an embodiment of the present invention.

7, a surveillance camera apparatus 600 according to an embodiment of the present invention includes a camera unit 610 for capturing an image, a plurality of infrared LED light sources (not shown) for providing infrared light to an imaging region including an object to be imaged A lightness value determiner 630 for determining a brightness value of an image photographed by the camera unit 610 and an abnormality detector 640 for detecting whether an abnormality has occurred in the plurality of infrared LED light sources 620, . ≪ / RTI >

The camera unit 610 may include a lens unit (not shown) and a CCD sensor unit (not shown). The lens unit may be equipped with at least one lens, and zoom-in / out operations may be possible. The CCD sensor unit senses an image passed through the lens unit and transmits the sensed image to the image processor 650. At this time, the CCD sensor unit further includes an automatic exposure control unit for checking the luminance value or brightness value of the image photographed by the camera unit 610, and adjusting the automatic exposure setting value for the photographed image according to the determined luminance value or brightness value can do.

The brightness value determining unit 630 can confirm the brightness value of the photographed image based on the automatic exposure setting value set for the photographed image. The brightness value determining unit 630 may determine the brightness value of the photographed image based on the white balance adjustment value adjusted by the image processing unit 650. [ Also, the brightness value determining unit 630 may determine the brightness value of the photographed image by using the brightness histogram of the photographed image.

Also, the brightness value determining unit 630 may divide the photographed image into a plurality of regions, and determine brightness values of the plurality of divided regions.

The anomaly detection unit 640 detects the amount of light of the plurality of infrared LED light sources 620 corresponding to the brightness value determined by the brightness value determination unit 630 by using a plurality of infrared LED light sources 620 corresponding to a predetermined reference brightness value, It is possible to detect that a plurality of infrared LED light sources 620 are abnormal. In addition, when the use time of the plurality of infrared LED light sources 620 exceeds a predetermined time, the anomaly detection unit 640 may detect that an abnormality has occurred in the plurality of infrared LED light sources 620.

In addition, when the image photographed by the camera unit 610 is divided into a plurality of regions, the anomaly detection unit 640 may include a plurality of infrared LED light sources 620, a plurality of infrared LEDs And a reference brightness value of each of a plurality of regions of the previously stored reference image is compared with each other, and based on the comparison result, the brightness value of each of the plurality of infrared LED light source sets It may detect an abnormality.

In addition, when the image photographed by the camera unit 610 is divided into a plurality of regions, the anomaly detection unit 640 may include a plurality of infrared LED light sources 620, a plurality of infrared LEDs And a brightness value difference between a brightness value of each of a plurality of regions of the photographed image and a reference brightness value of each of a plurality of regions of a previously stored reference image is obtained and a plurality of infrared rays It is also possible to calculate the light quantity deviation for each LED light source set and to detect the abnormality of each of the plurality of infrared LED light source sets based on the calculated light quantity deviation. The anomaly detection unit 640 may obtain the brightness value difference using the brightness histogram of the photographed image and the brightness histogram of the previously stored reference image.

In addition, when a plurality of images are captured by the camera unit 610, the anomaly detection unit 640 may estimate the remaining lifetime of each of the plurality of infrared LED light source sets based on brightness values of respective areas of the plurality of images .

The image processing unit 650 can perform image processing such as noise removal, scale conversion, and white balance adjustment on the image photographed by the camera unit 610.

The storage unit 660 can receive and store the photographed image processed by the image processing unit 650 and store the reference image for comparison with the photographed image.

The output unit 670 may output the image stored in the storage unit 660 and may output the detection result when the abnormality sensing unit 640 detects that the infrared LED light source 620 is abnormal . In addition, the output unit 670 may output information on a set of infrared LED light sources detected as an abnormality of a plurality of infrared LED light source sets. The output unit 670 may include various output devices within a range apparent to a person skilled in the art such as a display, a speaker, and a printer.

8 is a block diagram showing the configuration of a surveillance camera system according to another embodiment of the present invention.

Referring to FIG. 8, the surveillance camera system according to another embodiment of the present invention may include a surveillance camera device 710 and a control server 730. The surveillance camera device 710 and the control server 730 can be connected through a predetermined network according to a wired / wireless communication method that is obvious to a person skilled in the art. The control server 730 may be included in the management center 20 shown in FIG.

The surveillance camera device 710 may include a camera unit 712 that captures an image and an infrared LED light source 714 that provides infrared illumination to the capture region.

The camera unit 712 may include a lens unit (not shown) and a CCD sensor unit (not shown). The lens unit may be equipped with at least one lens, and zoom-in / out operations may be possible. The CCD sensor unit senses an image passed through the lens unit and transmits the image to the image processing unit 731. At this time, the CCD sensor unit further includes an automatic exposure control unit for checking the luminance value or brightness value of the image photographed by the camera unit 712, and adjusting the automatic exposure setting value for the photographed image according to the determined luminance value or brightness value can do.

The surveillance camera apparatus 710 transmits the image photographed by the camera unit 712 to the control server 730.

The control server 730 includes a brightness value determiner 732 for determining a brightness value of an image transmitted by the surveillance camera apparatus 710 and an abnormality detection unit 730 for detecting whether an abnormality has occurred in the plurality of infrared LED light sources 714 (733).

The image processing unit 731 can perform image processing such as noise removal, scale conversion, and white balance adjustment on the image photographed by the camera unit 712.

The storage unit 734 can receive and store the photographed image processed by the image processing unit 731 and store the reference image for comparison with the photographed image.

The output unit 735 may output the image stored in the storage unit 734 and may output the detection result when it is detected by the anomaly detection unit 733 that the infrared LED light source 714 is abnormal . The output unit 735 may include various output devices within a range that is apparent to a person skilled in the art, such as a display, a speaker, and a printer.

Conventionally, it is difficult to visually confirm whether or not the provided light is normal due to the characteristics of the infrared LED light source, and it is difficult for the user of the surveillance camera device to accurately grasp the time point of repair and replacement.

In addition, even if the captured image is viewed and judged, it is difficult to accurately determine the decrease in the amount of light in the captured image itself, and the image quality of the surveillance camera is degraded due to a gradual decrease in output of the infrared light, It was difficult to prevent continuous deterioration.

On the other hand, the surveillance camera device according to an embodiment of the present invention detects a decrease or an output failure of the infrared LED light source based on the luminance value or the brightness value of the image that is confirmed in various ways, To be replaced.

The above-described embodiments of the present invention can be embodied in a general-purpose digital computer that can be embodied as a program that can be executed by a computer and operates the program using a computer-readable recording medium.

The computer readable recording medium may be a magnetic storage medium such as a ROM, a floppy disk, a hard disk, etc., an optical reading medium such as a CD-ROM or a DVD and a carrier wave such as the Internet Lt; / RTI > transmission).

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

100, 600, 710: Surveillance camera device
110, 610, and 712:
130, 620, 714: Infrared LED light source
150, 160, 170: housing
630, 732: Brightness value determination unit
640, and 733:
650, and 731:
660, 734:
670, 735:
700: Surveillance camera system
730:

Claims (24)

A method of detecting an abnormality of an infrared LED light source included in a surveillance camera device applicable to a self-diagnosis system that notifies a state of a surveillance camera device to a management center,
Capturing an image using the surveillance camera device;
Determining a brightness value of the photographed image; And
And comparing the determined brightness value with a predetermined reference brightness value to detect an abnormality of a plurality of infrared LED light sources,
Wherein the determining comprises:
Dividing the photographed image into a plurality of regions; And
Determining a brightness value of each of the plurality of divided regions,
Wherein the sensing comprises:
Dividing the plurality of infrared LED light sources into a plurality of infrared LED light source sets providing illumination for each of the plurality of regions;
Comparing a brightness value of each of a plurality of regions of the photographed image with a reference brightness value of each of a plurality of regions of a previously stored reference image; And
And detecting an abnormality of each of the plurality of infrared LED light source sets based on the comparison result.
The method according to claim 1,
Wherein the sensing comprises:
When the light amount of the plurality of infrared LED light sources corresponding to the determined brightness value is smaller than the light amount of the plurality of infrared LED light sources corresponding to the preset reference brightness value, The method comprising the steps of: detecting an infrared LED light source;
The method according to claim 1,
Wherein the sensing comprises:
And detecting an abnormality in the plurality of infrared LED light sources when the use time of the plurality of infrared LED light sources exceeds a preset time.
The method according to claim 1,
A method of detecting an abnormality of an infrared LED light source,
Further comprising the step of outputting the detection result when an abnormality is detected in the plurality of infrared LED light sources.
The method according to claim 1,
Wherein the determining comprises:
Obtaining an automatic exposure setting value applied to the photographed image; And
And determining a brightness value of the photographed image based on the obtained automatic exposure setting value.
delete The method according to claim 1,
A method of detecting an abnormality of an infrared LED light source,
Further comprising the step of outputting information on an infrared LED light source set detected as an abnormality of the plurality of infrared LED light source sets.
A method of detecting an abnormality of an infrared LED light source included in a surveillance camera device applicable to a self-diagnosis system that notifies a state of a surveillance camera device to a management center,
Capturing an image using the surveillance camera device;
Determining a brightness value of the photographed image; And
And comparing the determined brightness value with a predetermined reference brightness value to detect an abnormality of a plurality of infrared LED light sources,
Wherein the determining comprises:
Dividing the photographed image into a plurality of regions; And
Determining a brightness value of each of the plurality of divided regions,
Wherein the sensing comprises:
Dividing the plurality of infrared LED light sources into a plurality of infrared LED light source sets providing illumination for each of the plurality of regions;
Obtaining a brightness value difference between a brightness value of each of a plurality of regions of the photographed image and a reference brightness value of each of a plurality of regions of a previously stored reference image;
Calculating a light amount deviation for each of the plurality of infrared LED light source sets from the obtained difference in brightness value; And
And detecting an abnormality of each of the plurality of infrared LED light source sets based on the calculated light amount deviation.
9. The method of claim 8,
Wherein the step of obtaining the brightness value difference comprises:
And obtaining the brightness value difference using the brightness histogram of the captured image and the brightness histogram of the previously stored reference image.
A method of detecting an abnormality of an infrared LED light source included in a surveillance camera device applicable to a self-diagnosis system that notifies a state of a surveillance camera device to a management center,
Capturing an image using the surveillance camera device;
Determining a brightness value of the photographed image; And
And comparing the determined brightness value with a predetermined reference brightness value to detect an abnormality of a plurality of infrared LED light sources,
Wherein the photographing step includes photographing a plurality of images using the surveillance camera device,
Wherein the determining step comprises determining a brightness value for each of the plurality of captured images,
A method of detecting an abnormality of an infrared LED light source,
Dividing the plurality of infrared LED light sources into a plurality of infrared LED light source sets providing illumination for each of the plurality of regions; And
Further comprising determining a remaining lifetime of each of the plurality of infrared LED light source sets based on a brightness value of each of the plurality of captured images.
11. The method of claim 10,
A method of detecting an abnormality of an infrared LED light source,
And outputting the remaining life of each of the plurality of sets of infrared LED light sources.
A computer-readable recording medium having recorded thereon a computer program for executing a method of detecting an abnormality of an infrared LED light source according to any one of claims 1 to 5 or 7 to 11.
A surveillance camera device applicable to a self-diagnosis system for notifying a status of a surveillance camera device to a management center,
A camera unit for capturing an image;
A plurality of infrared LED light sources for providing infrared light to an object to be imaged when the camera unit captures the image;
A brightness value determining unit for determining a brightness value of the photographed image; And
And an abnormality detecting unit for comparing the determined brightness value with a preset reference brightness value to detect an abnormality of the plurality of infrared LED light sources,
The brightness value determining unit may determine,
Wherein the image processing unit divides the photographed image into a plurality of regions, determines a brightness value of each of the plurality of divided regions,
Wherein the abnormality detecting unit comprises:
The plurality of infrared LED light sources are divided into a plurality of sets of infrared LED light sources for providing illumination in each of the plurality of regions, and a brightness value of each of a plurality of regions of the photographed image, Compares the reference brightness value of each of the plurality of infrared LED light source sets with the reference brightness value of the plurality of infrared LED light source sets based on the comparison result.
14. The method of claim 13,
Wherein the abnormality detecting unit comprises:
When the light amount of the plurality of infrared LED light sources corresponding to the determined brightness value is smaller than the light amount of the plurality of infrared LED light sources corresponding to the preset reference brightness value, Wherein the monitoring camera device comprises:
14. The method of claim 13,
Wherein the abnormality detecting unit comprises:
Wherein when the use time of the plurality of infrared LED light sources exceeds a predetermined time, it detects that an abnormality has occurred in the plurality of infrared LED light sources.
14. The method of claim 13,
The surveillance camera device includes:
Further comprising an output unit for outputting the detection result when the abnormality detection unit detects that an abnormality has occurred in the plurality of infrared LED light sources.
14. The method of claim 13,
The brightness value determining unit may determine,
Obtains an automatic exposure setting value applied to the photographed image, and determines a brightness value of the photographed image based on the obtained automatic exposure setting value.
delete 14. The method of claim 13,
The surveillance camera device includes:
Further comprising an output unit for outputting information on a set of infrared LED light sources detected as an abnormality in the plurality of infrared LED light source sets.
A surveillance camera device applicable to a self-diagnosis system for notifying a status of a surveillance camera device to a management center,
A camera unit for capturing an image;
A plurality of infrared LED light sources for providing infrared light to an object to be imaged when the camera unit captures the image;
A brightness value determining unit for determining a brightness value of the photographed image; And
And an abnormality detecting unit for comparing the determined brightness value with a preset reference brightness value to detect an abnormality of the plurality of infrared LED light sources,
The brightness value determining unit may determine,
Wherein the image processing unit divides the photographed image into a plurality of regions, determines a brightness value of each of the plurality of divided regions,
Wherein the abnormality detecting unit comprises:
The plurality of infrared LED light sources are divided into a plurality of sets of infrared LED light sources for providing illumination in each of the plurality of regions, and a brightness value of each of a plurality of regions of the photographed image, And calculating a light amount deviation for each of the plurality of infrared LED light source sets from the obtained difference in brightness value, and based on the calculated light amount deviation, calculating a light amount difference between the plurality of infrared LED light source sets And detects the abnormality of each of the cameras.
21. The method of claim 20,
Wherein the abnormality detecting unit comprises:
And obtains the brightness value difference using the brightness histogram of the photographed image and the brightness histogram of the previously stored reference image.
A surveillance camera device applicable to a self-diagnosis system for notifying a status of a surveillance camera device to a management center,
A camera unit for capturing an image;
A plurality of infrared LED light sources for providing infrared light to an object to be imaged when the camera unit captures the image;
A brightness value determining unit for determining a brightness value of the photographed image; And
And an abnormality detecting unit for comparing the determined brightness value with a preset reference brightness value to detect an abnormality of the plurality of infrared LED light sources,
Wherein the camera section photographs a plurality of images,
Wherein the brightness value determining unit determines a brightness value for each of the plurality of captured images,
Wherein the abnormality detecting unit comprises:
Wherein the plurality of infrared LED light sources are divided into a plurality of sets of infrared LED light sources for providing illumination in each of the plurality of regions, and based on the brightness values of the plurality of infrared LED light sources, And determines the remaining life of each of the cameras.
23. The method of claim 22,
The surveillance camera device includes:
Further comprising an output unit for outputting the remaining lifetime of each of the plurality of infrared LED light source sets.
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