JP2017076923A - Imaging device, and control method and control program of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to consider safety of a subject while maintaining irradiation intensity necessary for monitoring without grasping a distance to the subject.SOLUTION: A moving body detecting unit 111 detects a moving body in an image obtained with an image processing unit 103, and a face detecting unit 112 detects a face of the moving body. When a system controller 104 controls an infrared illumination unit 110 to detect the moving body with the moving body detection unit in the image obtained when an imaging area is illuminated with first irradiation intensity by the infrared illumination unit, the infrared illumination unit illuminates with second irradiation intensity higher than the first irradiation intensity.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an imaging apparatus, a control method thereof, and a control program, and more particularly, to an illumination intensity adjustment technique performed by an imaging apparatus including an illumination apparatus such as an infrared illumination apparatus.

  As one of the imaging devices, there is a monitoring camera for monitoring a surrounding situation such as a building. In order to perform monitoring at night or in a dark place, there is a monitoring camera provided with an illumination device such as an infrared illumination device. By using such a monitoring camera, it is possible to perform monitoring without being noticed by a person even when there is no light by turning on the infrared illumination device.

  By the way, in recent years, in order to monitor a farther subject, there is an increasing demand for a monitoring camera equipped with an infrared illumination device with increased illumination intensity. In addition, although infrared illumination is not a wavelength that can be recognized by humans, it is considered unpreferable to look directly at a certain amount of light for a long time in consideration of the risk to the human body (particularly the eyes). For this reason, in an infrared illumination device that can be directly viewed by a person, the illumination intensity may be limited.

  For example, there is a monitoring camera that detects the distance between an imaging unit and a subject and adjusts the irradiation intensity of a lighting device (see Patent Document 1). There is also a monitoring camera that gradually increases the irradiation intensity and maintains the irradiation intensity at the time when face detection is completed (see Patent Document 2).

JP 2010-178112 A JP 2011-176780 A

  However, the monitoring camera described in Patent Document 1 described above not only needs to grasp the distance to the subject (subject distance) in order to adjust the irradiation intensity, but also records the illumination intensity according to the subject distance. The table must be stored in the storage area in advance.

  Further, in the surveillance camera described in Patent Document 2, since illumination is continued with the irradiation intensity at the time when face detection is completed, the subject is pointing in a different direction instead of the direction of the surveillance camera during the face detection process. For example, illumination is continued with an irradiation intensity higher than necessary.

  Accordingly, an object of the present invention is to provide an imaging apparatus that takes into account the safety of a subject while maintaining the irradiation intensity necessary for monitoring without having to grasp the distance to the subject, a control method thereof, and a control program It is in.

  In order to achieve the above object, an imaging apparatus according to the present invention is an imaging apparatus that includes an illuminating unit that illuminates a subject, and an imaging unit that captures an image of the subject while illuminating the subject with the illuminating unit. A first detection unit that detects the subject in the image; a second detection unit that detects a specific area of the subject in the image; and the illumination unit that controls the illumination unit to When the subject is detected by the first detection unit in the image obtained by illuminating the imaging region imaged by the imaging unit with the first irradiation intensity, the imaging region is defined by the illumination unit. And control means for illuminating with a second irradiation intensity higher than the irradiation intensity.

  The control method according to the present invention is a control method for an imaging apparatus comprising: an illuminating unit that illuminates a subject; and an imaging unit that captures an image of the subject while illuminating the subject with the illuminating unit. In the first detection step of detecting the subject in the image, a second detection step of detecting a specific area of the subject in the image, and the illumination unit is controlled to be imaged by the imaging unit by the illumination unit. When the subject is detected in the first detection step in an image obtained by illuminating the imaging region to be illuminated with the first irradiation intensity, the illuminating means causes the imaging region to be higher than the first irradiation intensity. And a control step of illuminating with the second irradiation intensity.

  A control program according to the present invention is a control program used in an imaging apparatus including an illumination unit that illuminates a subject, and an imaging unit that captures an image of the subject while illuminating the subject with the illumination unit. Controlling a first detection step of detecting the subject in the image, a second detection step of detecting a specific region of the subject in the image, and the illumination unit in a computer included in the imaging device; When the subject is detected in the first detection step in an image obtained by illuminating an imaging region imaged by the imaging unit with the first irradiation intensity by the illumination unit, the imaging region is detected by the illumination unit. And a control step of illuminating with a second irradiation intensity higher than the first irradiation intensity.

  According to the present invention, when the subject is detected, the irradiation intensity is increased from the first irradiation intensity to the second irradiation intensity. This makes it possible to consider the safety of the subject while maintaining the irradiation intensity necessary for monitoring without grasping the distance to the subject.

1 is a block diagram illustrating a configuration of an example of an imaging apparatus according to a first embodiment of the present invention. It is a flowchart for demonstrating irradiation intensity switching control of the infrared illumination part in the surveillance camera shown in FIG. It is a flowchart for demonstrating irradiation control in case the moving body shown in FIG. 2 is single. It is a flowchart for demonstrating irradiation control in case the moving body shown in FIG. 2 is multiple. It is a flowchart for demonstrating irradiation control of the infrared illumination part in the surveillance camera by the 2nd Embodiment of this invention. It is a flowchart for demonstrating the image display control performed with the surveillance camera in the 3rd Embodiment of this invention. It is a figure for demonstrating an example of the image display control performed with the surveillance camera in the 3rd Embodiment of this invention (the 1). It is a figure for demonstrating an example of the image display control performed with the surveillance camera in the 3rd Embodiment of this invention (the 2). It is a figure for demonstrating an example of the image display control performed with the surveillance camera in the 3rd Embodiment of this invention (the 3).

  Hereinafter, an example of an imaging apparatus according to an embodiment of the present invention will be described with reference to the drawings.

[First Embodiment]
FIG. 1 is a block diagram showing the configuration of an example of an imaging apparatus according to the first embodiment of the present invention.

  The illustrated imaging apparatus is, for example, a monitoring camera for monitoring a surrounding situation such as a building. The surveillance camera has an imaging optical system 100, and a subject image (optical image) is formed on an imaging element 102 such as a CCD or CMOS sensor via the imaging optical system 100 and an infrared filter (hereinafter referred to as an infrared filter). .

  In the example illustrated in FIG. 1, the imaging optical system 100 is illustrated with a single lens, but the imaging optical system 100 may be configured with a plurality of lenses. The infrared filter 101 has a plurality of filters such as an optical low-pass filter and an optical band-pass filter, and one or more of them can be arbitrarily selected.

  The imaging optical system control unit 105 performs control related to focusing control, zoom control, exposure control, and the like of the imaging optical system 100 under the control of the system controller 104. The image sensor 102 generates an electrical signal (analog signal) corresponding to the optical image, A / D converts the analog signal, and sends it to the image processing unit 103 as a digital image signal.

  The image processing unit 103 performs predetermined image processing such as gamma correction and color balance adjustment on the digital image signal to generate an image file such as JPEG (hereinafter also referred to as image data). The system controller 104 sends the image file generated by the image processing unit 103 to the client device 114 via the LAN 113. On the other hand, the client device 114 sends a control instruction to the system controller 104 via the LAN 113 to control the surveillance camera.

  The image data generated by the image processing unit 103 is input to the subject detection unit 106. The subject detection unit 106 detects a subject (for example, a person) in the image data and outputs the detection result to the system controller 104.

  As illustrated, the subject detection unit 106 includes a moving object detection unit 111 and a face detection unit 112. The moving object detection unit 111 performs moving object detection (subject detection) based on the difference between frames in the image data obtained as a result of imaging. The face detection unit 112 detects a face area (specific area) in the image data based on preset facial feature point information. Then, the moving object detection unit 111 and the face detection unit 112 output the moving object detection result and the face area detection result to the system controller 104, respectively.

  The system controller 104 operates the infrared device control unit 107 based on the detection results (that is, the moving object detection result and the face area detection result). For example, the system controller 104 sets the illumination intensity in the infrared device control unit 107 according to the detection result. Further, the system controller 104 sets a filter to be used according to the detection result.

  The subject detection unit 106 is not limited to the above-described configuration, and may be configured by combining various detection processes such as a combination of moving object detection and vehicle number detection.

  The infrared device control unit 107 controls the infrared illumination adjustment unit 108 based on the irradiation intensity set by the system controller 104. The infrared illumination adjustment unit 108 switches the irradiation intensity in the infrared illumination unit 110.

  Furthermore, the infrared device control unit 107 controls the infrared filter driving unit 109 to apply the filter set by the system controller 104. The infrared filter driving unit 109 drives the infrared filter 101 and applies the set filter.

  In the example shown in FIG. 1, for convenience of explanation, an example including the infrared device control unit 107 is shown, but the system controller 104 directly controls the infrared illumination adjustment unit 108 and the infrared filter driving unit 109. You may make it do.

  FIG. 2 is a flowchart for explaining irradiation intensity switching control of the infrared illumination unit 110 in the monitoring camera shown in FIG. Note that the processing according to the illustrated flowchart is performed under the control of the system controller 104.

  When the illumination intensity switching control is started, the moving object detection unit 111 detects a moving object in the image data output from the image processing unit 103 under the control of the system controller 104 (step S201). In this case, it is assumed that the irradiation intensity of the infrared illumination unit 110 is set to a minimum intensity at which the moving object detection unit 111 can detect a moving object in the image data.

  The moving object detection unit 111 outputs the moving object detection result to the system controller 104, and the system controller 104 determines whether or not there are a plurality of moving objects based on the moving object detection result (step S202). When there are not a plurality of moving bodies (NO in step S202), the system controller 104 performs irradiation control (first irradiation control) when the moving body is a single body as described later (step S203). Then, the system controller 104 ends the illumination intensity switching control.

  On the other hand, when there are a plurality of moving objects (YES in step S202), the system controller 104 performs irradiation control (second irradiation control) when there are a plurality of moving objects as described later (step S204). . Then, the system controller 104 determines whether face detection has been completed for all moving objects based on the moving object detection result and the face detection result (step S205).

  If face detection has not been completed for all moving objects (NO in step S205), system controller 104 waits until a predetermined time elapses (step S206). Then, the system controller 104 returns to the process of step S204. The predetermined time may be set in advance. If the moving speed of the moving object is fast, the set time (waiting time) is shortened, and if the moving speed of the moving object is slow, the set time is lengthened. You may do it.

  When face detection is completed for all moving objects (YES in step S205), system controller 104 ends the illumination intensity switching control.

  FIG. 3 is a flowchart for explaining irradiation control (first irradiation control) when the moving body shown in FIG. 2 is a single body.

  When the first irradiation control is started, the system controller 104 controls the infrared device control unit 107 for face detection to increase the irradiation intensity of the infrared illumination unit 110 to obtain the first illumination intensity (step). S301). Subsequently, the system controller 104 determines whether or not the moving object's face can be detected based on the face detection result (step S302). If the moving body face cannot be detected (NO in step S302), the system controller 104 ends the first irradiation control. Then, the system controller 104 holds the illumination intensity at the first illumination intensity.

  On the other hand, if the moving object's face can be detected (YES in step S302), the system controller 104 reduces the irradiation intensity to the second illumination intensity (step S303). Then, the system controller 104 returns to the process of step S302 and determines whether face detection is possible again.

  In this manner, when the face detection is possible for the moving object, the system controller 104 sequentially decreases the illumination intensity and determines again whether the face detection is possible for the moving object. If the face cannot be detected in the moving object, the system controller 104 ends the first irradiation control and maintains the illumination intensity at that time.

  In the above example, the irradiation intensity at the time when the face cannot be detected in the moving object is held, but the present invention is not limited to this. For example, the lowest irradiation intensity at which a face can be detected in a moving object may be held, and further, the lowest irradiation intensity at which a moving object can be detected may be held. Moreover, you may make it hold | maintain the average illumination intensity of the lowest irradiation intensity | strength which can detect a face in a moving body, and the lowest irradiation intensity | strength which can detect a moving body.

  FIG. 4 is a flowchart for explaining irradiation control (second irradiation control) when there are a plurality of moving bodies shown in FIG.

  When the second irradiation control is started, the system controller 104 determines whether or not there is a moving body for which at least one face detection has been completed based on the moving body detection result and the face detection result (step S401). If there is no moving object for which face detection has been completed (NO in step S401), the system controller 104 controls the infrared device control unit 107 to increase the irradiation intensity by the infrared illumination unit 110 in a stepwise manner to the maximum value. (Step S402). Then, the system controller 104 ends the second irradiation control.

  On the other hand, if there is a moving object for which face detection has been completed (YES in step S401), the system controller 104 controls the infrared device control unit 107 so that the irradiation intensity by the infrared illumination unit 110 is set as the irradiation intensity for face detection. (Step S403). Note that the irradiation intensity for face detection is stored in advance in a built-in memory of the system controller 104 as a set value, for example. Further, the minimum irradiation intensity at which face detection was possible in the previous face detection may be stored in the built-in memory, and the minimum irradiation intensity may be used as the face detection irradiation intensity.

  Subsequently, the system controller 104 determines whether face detection has been completed for all moving objects according to the face detection result (step S404). If face detection has not been completed for all moving objects (NO in step S404), system controller 104 increases the irradiation intensity of infrared illumination unit 110. Then, the system controller 104 determines whether or not a predetermined time (predetermined time) has elapsed after increasing the irradiation intensity of the infrared illumination unit 110 (step S405).

  If the predetermined time has not elapsed since the irradiation intensity of the infrared illumination unit 110 was increased (NO in step S405), the system controller 104 further increases the irradiation intensity of the infrared illumination unit 110 (step S406). Thereafter, the system controller 104 returns to the process of step S404 and determines again whether face detection has been completed for all moving objects.

  On the other hand, when a certain time has elapsed since the irradiation intensity of infrared illumination unit 110 was increased (YES in step S405), system controller 104 lowers the irradiation intensity of infrared illumination unit 110 below the irradiation intensity for face detection. (Step S407). Then, the system controller 104 ends the second irradiation control.

  When face detection is completed for all moving objects (YES in step S404), system controller 104 proceeds to the process of step S407. Note that the irradiation intensity set in step S407 is the same illumination intensity as that when the moving body is a single body.

  In this way, in the second irradiation control, even when there are a plurality of moving objects, the irradiation control can be performed in consideration of the safety of the moving object for which face detection has been completed.

  In the first embodiment described above, the method in which the system controller 104 controls the infrared illumination unit 110 based on the moving object detection result and the face detection result has been described, but is the infrared illumination unit 110 controlled? Whether or not may be set from the client device 114.

  As described above, in the first embodiment of the present invention, the irradiation intensity of the infrared illumination unit is controlled according to the moving object detection result and the face detection result. Accordingly, it is not necessary to know the distance to the subject (moving body), and the safety of the subject can be considered while maintaining the irradiation intensity necessary for monitoring.

[Second Embodiment]
Next, an example of a surveillance camera according to the second embodiment of the present invention will be described. The configuration of the surveillance camera according to the second embodiment is the same as that of the surveillance camera shown in FIG.

  FIG. 5 is a flowchart for explaining irradiation control of the infrared illumination unit in the surveillance camera according to the second embodiment of the present invention.

  When the irradiation control is started, under the control of the system controller 104, the moving object detection unit 111 detects the moving object in the image data that is the output of the image processing unit 103, and at least a part of the plurality of moving objects from the moving object detection result. Is detected (step S501). Then, the moving body detection unit 111 sends the detection result of the moving body weight to the system controller 104.

  The system controller 104 increases the irradiation intensity of the infrared illumination unit 110 by controlling the infrared device control unit 107 in order to perform the face detection process again based on the detection result of the moving weight (step S502). Note that the irradiation intensity set in step S502 is the minimum irradiation intensity at which the moving object's face could be detected in the previous face detection.

  Subsequently, the system controller 104 determines whether face detection has been completed for all moving objects based on the face detection result output from the face detection unit 112 (step S503). If face detection is not completed (NO in step S503), the system controller 104 returns to the process in step S502 and increases the irradiation intensity again.

  Here, the irradiation intensity is increased when face detection is not completed, but the irradiation intensity set for face detection may be held.

  On the other hand, when face detection is completed (NO in step S503), the system controller 104 holds the irradiation intensity at the irradiation intensity at the time when face detection is completed (step S504). When the moving object detection unit 111 detects that the overlapping of the moving objects has been released (removed) (step S505), the system controller 104 reduces the irradiation intensity of the infrared illumination unit 110 (step S406). Thereafter, the system controller 104 ends the irradiation control.

  In the flowchart shown in FIG. 5, the face detection process is performed again by detecting the overlap of moving objects, but the present invention is not limited to such a process. For example, when a moving object for which face detection has been completed moves to the vicinity of the boundary between the imaging area and the non-imaging area, the face detection process may be performed again. In addition, a detection area for controlling the infrared illumination unit 110 by the client device 114 is set as an imaging region, and the infrared illumination unit 111 is controlled only when a moving object is detected in the detection area. May be.

  As described above, in the second embodiment of the present invention, when the overlapping of moving objects is detected and there is an overlapping of moving objects, face detection is performed by increasing the irradiation intensity of the infrared illumination unit. When the face detection is completed and the overlapping of moving objects is released, the irradiation intensity of the infrared illumination unit is lowered. As a result, not only can face detection be performed accurately, but it is not necessary to know the distance to the subject (moving object), and the safety of the subject can be considered while maintaining the irradiation intensity necessary for monitoring. .

[Third Embodiment]
Next, an example of a surveillance camera according to the third embodiment of the present invention will be described. The configuration of the surveillance camera according to the second embodiment is the same as that of the surveillance camera shown in FIG.

  As described above, the image data obtained by the monitoring camera is sent to the client device 114 via the LAN 113. At this time, the system controller 104 superimposes the face detection result obtained by the face detection unit 112 on the image data and sends it to the client device 114.

  FIG. 6 is a flowchart for explaining image display control performed by the surveillance camera according to the third embodiment of the present invention.

  When the image display control is started, under the control of the system controller 104, the moving object detection unit 111 detects a moving object in the image data output from the image processing unit 103, and sends the moving object detection result to the system controller 104 (step S601). ). Upon receiving the moving object detection result, the system controller 104 controls the infrared device control unit 107 to increase the irradiation intensity of the infrared illumination unit 110 for face detection (step S602).

  Next, the face detection unit 112 performs face detection of the moving object 702 under the control of the system controller 104 (step S603). Then, the face detection unit 112 sends the face detection result to the system controller 104.

  7 to 9 are diagrams for explaining an example of image display control performed by the monitoring camera according to the third embodiment of the present invention.

  7 to 9, as described above, when the moving body 702 is detected, the system controller 104 increases the irradiation intensity of the infrared light 701 emitted from the infrared illumination unit 110. Then, the system controller 104 sets the face detection area 704 in the moving object detection area 703 indicated by the moving object detection result based on the face detection result (see FIG. 7).

  Subsequently, the system controller 104 controls the infrared device control unit 107 to lower the irradiation intensity of the infrared light 701 emitted from the infrared illumination unit 110 (step S604: see FIG. 8). Then, the system controller 104 generates a composite image by superimposing the face image 705 obtained in the face detection area 704 in the immediate vicinity of the moving object detection area 703 (step S605: see FIG. 9). Then, the system controller 104 sends the composite image to the client device 114 via the LAN 113. Thereafter, the system controller 104 ends the image display control. The client device 114 displays the composite image sent from the monitoring camera on the display unit.

  In the above-described image display control, the position at which the face image 705 is superimposed is the closest to the moving object detection area 703, but the face image may be superimposed on the face detection area 704.

  If the face detection of the moving object is not completed in step S603, information indicating that face detection is not completed may be superimposed instead of the face image 705 to generate a composite image.

  In the above example, the face image 705 is superimposed after the irradiation intensity of the infrared illumination unit 110 is lowered, but the present invention is not limited to this. For example, after superimposing the face image 705, the irradiation intensity of the infrared illumination unit 110 may be lowered. Note that the control of the irradiation intensity of the infrared illumination unit 110 is performed in the same manner as in the first embodiment.

  As described above, in the third embodiment of the present invention, even when the irradiation intensity is insufficient for performing face detection, information associated with a moving object can be superimposed and displayed. As a result, the user can easily recognize the monitoring target.

  In the third embodiment, the moving image detection and the face detection are combined and the face image obtained in the face detection is superimposed on the moving object detection region, but the present invention is not limited to this. For example, a combination of the moving object detection and the vehicle number detection may superimpose the vehicle number obtained when detecting the vehicle number on the moving object detection area to monitor the vehicle.

  As is apparent from the above description, in the example shown in FIG. 1, the imaging optical system 100, the infrared filter 101, the imaging element 102, and the image processing unit 103 constitute an imaging unit. The moving object detection unit 111 and the system controller 104 function as first detection means, and the face detection unit 112 and the system controller 104 function as second detection means. Furthermore, the system controller 104, the infrared device control unit 107, and the infrared illumination adjustment unit 108 function as control means, and the system controller 104 functions as transmission means.

  As mentioned above, although this invention was demonstrated based on embodiment, this invention is not limited to these embodiment, Various forms of the range which does not deviate from the summary of this invention are also contained in this invention. .

  For example, the function of the above embodiment may be used as a control method, and this control method may be executed by the imaging apparatus. Further, a program having the functions of the above-described embodiments may be used as a control program, and the control program may be executed by a computer included in the imaging apparatus. The control program is recorded on a computer-readable recording medium, for example.

[Other Embodiments]
The present invention supplies a program that realizes one or more functions of the above-described embodiments to a system or apparatus via a network or a storage medium, and one or more processors in a computer of the system or apparatus read and execute the program This process can be realized. It can also be realized by a circuit (for example, ASIC) that realizes one or more functions.

DESCRIPTION OF SYMBOLS 100 Imaging optical system 101 Infrared filter 102 Imaging element 103 Image processing part 104 System controller 106 Subject detection part 107 Infrared equipment control part 110 Infrared illumination part 111 Moving object detection part 112 Face detection part

Claims (13)

An imaging apparatus comprising: an illuminating unit that illuminates a subject; and an imaging unit that captures an image of the subject while illuminating the subject with the illuminating unit;
First detecting means for detecting the subject in the image;
Second detection means for detecting a specific area of the subject in the image;
When the illuminating unit is controlled and the subject is detected by the first detecting unit in an image obtained by illuminating an imaging region captured by the imaging unit with the first irradiating intensity by the illuminating unit. Control means for illuminating the imaging region with a second irradiation intensity higher than the first irradiation intensity by the illumination means;
An imaging device comprising:   When the specific region is detected by the second detection unit in the image obtained by illuminating the imaging region with the second irradiation intensity by the illumination unit, the control unit irradiates the illumination unit. The imaging apparatus according to claim 1, wherein an intensity is the first irradiation intensity.   3. The imaging apparatus according to claim 1, wherein the second irradiation intensity is the lowest irradiation intensity among the irradiation intensities in which the specific area can be detected by the second detection unit.   When the plurality of subjects are detected by the first detection unit, if the specific region is not detected by the second detection unit in any of the plurality of subjects, the control unit detects the irradiation intensity of the illumination unit. The image pickup apparatus according to claim 1, wherein the image pickup device is raised step by step.   When the plurality of subjects are detected by the first detection unit, and the specific region is detected by the second detection unit in any of the plurality of subjects, the control unit is configured to irradiate the illumination unit. The imaging apparatus according to claim 1, wherein the intensity is the second irradiation intensity.   When the specific area is detected in all of the plurality of subjects by the second detection means in the image obtained by illuminating the imaging area with the second irradiation intensity by the illumination means, the control means The imaging apparatus according to claim 5, wherein the illumination intensity of the illumination unit is the first illumination intensity.   The control means sets the irradiation intensity of the illumination means as the first irradiation intensity when a predetermined time elapses after the irradiation intensity of the illumination means is set to the second irradiation intensity. The imaging device according to 5 or 6.   When the plurality of subjects detected by the first detection means are in a state where at least a part thereof overlaps, the control means determines that the specific region is present in all of the plurality of subjects by the second detection means. The imaging apparatus according to claim 5, wherein after the detection, when the overlapping state is eliminated, the irradiation intensity of the illumination unit is set to the first irradiation intensity.   The imaging apparatus according to claim 1, further comprising a transmission unit configured to transmit a composite image in which the specific area is superimposed on the image to the client apparatus.   The imaging apparatus according to claim 1, wherein the specific area is a human face or a vehicle number.   The imaging apparatus according to claim 1, wherein the illumination unit illuminates the imaging region with infrared light. An imaging apparatus control method comprising: an illuminating unit that illuminates a subject; and an imaging unit that captures an image of the subject while illuminating the subject with the illuminating unit;
A first detection step of detecting the subject in the image;
A second detection step of detecting a specific area of the subject in the image;
When the subject is detected in the first detection step in an image obtained by controlling the illumination unit and illuminating an imaging region imaged by the imaging unit with the first illumination intensity by the illumination unit. A control step of illuminating the imaging region with a second irradiation intensity higher than the first irradiation intensity by the illumination means;
A control method characterized by comprising: A control program used in an imaging apparatus comprising: an illuminating unit that illuminates a subject; and an imaging unit that images the subject while illuminating the subject with the illuminating unit to obtain an image.
In the computer provided in the imaging device,
A first detection step of detecting the subject in the image;
A second detection step of detecting a specific area of the subject in the image;
When the subject is detected in the first detection step in an image obtained by controlling the illumination unit and illuminating an imaging region imaged by the imaging unit with the first illumination intensity by the illumination unit. A control step of illuminating the imaging region with a second irradiation intensity higher than the first irradiation intensity by the illumination means;
A control program characterized by causing