WO2017163311A1 - 監視カメラ - Google Patents
監視カメラ Download PDFInfo
- Publication number
- WO2017163311A1 WO2017163311A1 PCT/JP2016/058985 JP2016058985W WO2017163311A1 WO 2017163311 A1 WO2017163311 A1 WO 2017163311A1 JP 2016058985 W JP2016058985 W JP 2016058985W WO 2017163311 A1 WO2017163311 A1 WO 2017163311A1
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- WIPO (PCT)
- Prior art keywords
- opening
- aperture
- unit
- closing
- closing control
- Prior art date
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B9/00—Exposure-making shutters; Diaphragms
- G03B9/02—Diaphragms
- G03B9/06—Two or more co-operating pivoted blades, e.g. iris type
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B9/00—Exposure-making shutters; Diaphragms
- G03B9/02—Diaphragms
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
- G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
- G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
- G03B7/091—Digital circuits
- G03B7/095—Digital circuits for control of aperture
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/71—Circuitry for evaluating the brightness variation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/75—Circuitry for compensating brightness variation in the scene by influencing optical camera components
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
Definitions
- the present invention relates to a surveillance camera to which a lens having an iris opening / closing mechanism can be connected.
- the aperture is automatically variably controlled so that the luminance of the optical image formed on the imaging surface of the imaging device is within a certain range (see, for example, Patent Document 1).
- a surveillance camera includes a light receiving unit, a diaphragm for adjusting the amount of light passing through the light receiving unit, and a diaphragm opening / closing unit.
- An image sensor that converts light that has passed through the light receiving unit into a video signal
- a light amount feedback opening / closing control unit that controls the aperture opening / closing unit to open / close the aperture according to the luminance of the video signal, and according to the luminance of the video signal
- an opening / closing control unit for controlling the aperture opening / closing unit to open / close the aperture when a predetermined condition is satisfied.
- FIG. 1 is a configuration diagram of an entire monitoring system including a monitoring camera according to Embodiment 1 of the present invention.
- a monitoring camera 101, a monitoring PC 102, and a recorder 103 are each connected to a network 104.
- the video obtained by photographing the target area with the monitoring camera 101 is monitored by the monitoring PC 102, recorded in the recorder 103, and displayed on the monitor 105.
- the video may be an image.
- the monitoring PC 102 and the recorder 103, the recorder 103 and the monitor 105, and the monitoring PC 102, the recorder 103, and the monitor 105 may be integrated.
- FIG. 2 is a functional configuration diagram of the surveillance camera according to the first embodiment of the present invention.
- the monitoring camera 101 includes a diaphragm 202 (also referred to as an iris) that adjusts the degree of light entering the light receiving unit 201 and a diaphragm opening / closing unit 203 that operates the diaphragm.
- Light that enters from the light receiving unit 201 is converted into an image signal that is an electrical signal by an imaging device 204 (image sensor, also referred to as CCD: Charge-Coupled Device).
- the video signal is subjected to various types of video processing by the video processing unit 205, and transmitted (output) from the video transmission unit 206 to the network 104.
- the video transmission unit 206 may transmit the data to the monitoring PC 102 and the recorder 103 without using the network 104.
- the measurement unit 207 measures the luminance of the video signal output from the image sensor 204 and notifies the measurement value to the light amount feedback opening / closing control unit 208.
- the light amount feedback opening / closing control unit 208 generates a light amount feedback opening / closing control signal and notifies the diaphragm opening / closing unit 203 of the signal.
- the aperture opening / closing unit 203 operates the aperture 202 and adjusts the amount of light passing through the light receiving unit 201 and the amount of light input to the image sensor 204 in accordance with the light amount feedback opening / closing control signal.
- the light amount feedback opening / closing control unit 208 generates a light amount feedback opening / closing control signal so that the luminance value of the video signal output from the image sensor 204 measured by the measuring unit 207 approaches a predetermined value. Specifically, when the luminance value of the video signal is larger than a predetermined value, the light amount feedback opening / closing control unit 208 closes the aperture and reduces the amount of light passing through the light receiving unit, so that the light amount feedback in the direction of blocking the light. The open / close control signal is generated. Further, the light amount feedback opening / closing control unit 208 opens the diaphragm and increases the amount of light passing through the light receiving unit when the luminance value of the video signal is smaller than a predetermined value. The open / close control signal is generated.
- the light amount feedback opening / closing control unit 208 performs light amount feedback opening / closing control for operating the diaphragm when the difference between the luminance value of the video signal and the predetermined value is larger than a predetermined allowable value. Generate a signal. For example, an F value (aperture size) that adjusts the degree of opening of the diaphragm is calculated so that the difference between the luminance value and a predetermined value is within a predetermined allowable value, and light amount feedback is used as a parameter. Mapping to open / close control signal. By controlling the diaphragm 202 by the light amount feedback opening / closing control unit 208, feedback control is performed so that a video signal having a constant luminance level is obtained.
- an F value aperture size
- the opening / closing control unit 209 generates an opening / closing control signal and notifies the diaphragm opening / closing unit 203.
- the diaphragm opening / closing unit 203 operates the diaphragm 202 in accordance with the opening / closing control signal.
- the opening / closing control unit 209 generates an opening / closing control signal regardless of (but not according to) the luminance value of the video signal output from the image sensor 204 measured by the measurement unit 207.
- the opening / closing control unit 209 generates an opening / closing control signal when a predetermined condition is satisfied.
- a specific example of the predetermined condition is when the power is turned on.
- the opening / closing control unit 209 monitors the power supply unit 210 and generates an opening / closing control signal for controlling the aperture opening / closing unit 203 when determining that the power is turned on.
- FIG. 2 illustrates a case where a lens unit 211 including a light receiving unit 201, a diaphragm 202, and a diaphragm opening / closing unit 203 is connected to the camera body 212.
- the configuration is not limited to the configuration in FIG. 2, and for example, a lens unit 211 including a light receiving unit 201, a diaphragm 202, a diaphragm opening / closing unit 203, an opening / closing control unit 209, and a power supply unit 210 may be connected to the camera body 212. .
- aperture size also referred to as F value
- the “aperture size” of the open / close control signal is not a parameter and may be determined in advance.
- a specific example of parameters included in the open / close control signal is “how to move the aperture”.
- “How to move the iris” includes, for example, “vibration operation” that repeats opening and closing several times, a state where the iris is fully opened, a state where the iris is closed to the minimum, or a state where the iris is fully opened.
- the aperture can be operated even when the brightness around the surveillance camera is constant. It becomes possible.
- the diaphragm is not operated for a long period of time, it can be considered that the static frictional force is larger than that at the time of installation as a cause of the diaphragm sticking.
- the “vibrating operation” and “maximum minimum operation” have the effect of preventing the sticking of the diaphragm and restoring the stuck diaphragm by preventing the dust from entering or removing the dust.
- a motor is often used for the aperture opening / closing unit 203.
- the “fastest operation” can maximize the work of the motor. Therefore, the “fastest operation” makes it possible to restore the aperture even when the static frictional force increases because the aperture is not operated for a long period of time.
- the “opening / closing control signal” “how to move the aperture” is not a parameter and may be determined in advance.
- FIG. 3 is a hardware configuration diagram of the surveillance camera according to the first embodiment of the present invention.
- the monitoring camera 101 is realized in hardware by a light receiving device 301, a diaphragm 302, a motor 303, a CPU (Central Processing Unit) 304, a memory 305, a power supply device 306, a transmission device 307, an image sensor 308, a measurement device 309, and the like.
- the hardware configuration of the monitoring camera 101 is not limited to the configuration of FIG.
- the light receiving unit 201 includes a light receiving device 301.
- the diaphragm 202 is constituted by a diaphragm 302.
- the aperture opening / closing unit 203 is configured by a motor 303.
- the image sensor 204 is configured by an image sensor 308.
- the video processing unit 205 includes a CPU 304 and a memory 305.
- the video transmission unit 206 includes a transmission device 307.
- the measuring unit 207 includes a measuring device 309.
- the light amount feedback opening / closing control unit 208 is constituted by a CPU 304 and a memory 305.
- the opening / closing control unit 209 includes a CPU 304 and a memory 305.
- the power supply unit 210 includes a power supply device 306.
- FIG. 4 is an operation flowchart according to the first embodiment of the present invention.
- the opening / closing control unit 209 determines whether the power is turned on or whether the power is turned on. When it is determined that the power is turned on, or when it is determined that the power is turned on, the process proceeds to step ST402. If it is determined that the power is not turned on, the determination in step ST401 is repeated.
- the opening / closing control unit 209 determines “aperture size” and “how to move the aperture” in order to operate the aperture regardless of the luminance value of the video signal, and maps the information for opening / closing the information.
- a control signal is generated and notified to the aperture opening / closing unit 203.
- the aperture opening / closing unit 203 operates the aperture according to the opening / closing control signal.
- “Aperture size” and “how to move the aperture” follow parameters included in the open / close control signal. It should be noted that when “aperture size” and “how to move the aperture” are determined in advance, they are followed.
- step ST403 it is determined whether or not the power is turned off. When the power is turned off, the process returns to step ST401. When the power is not turned off, the process proceeds to step ST404.
- step ST404 the light amount feedback opening / closing control unit 208 determines whether or not the difference between the luminance value of the video signal output from the image sensor 204 and a predetermined value (threshold value) is larger than a predetermined allowable value. to decide. If larger than the allowable value, the process proceeds to step ST405. If it is within the allowable value, the process returns to step ST403.
- a predetermined value threshold value
- step ST405 the light amount feedback opening / closing control unit 208 adjusts the degree of opening of the diaphragm so that the difference between the luminance value and the predetermined value is within a predetermined allowable value.
- a control signal is generated and notified to the aperture opening / closing unit 203.
- the light amount feedback opening / closing control unit 208 calculates the F value and maps it to the light amount feedback opening / closing control signal as a parameter of “aperture size”.
- step ST406 the aperture opening / closing unit 203 operates the aperture according to the light amount feedback opening / closing control signal, and adjusts the amount of light passing through the light receiving unit 201 and the amount of light input to the image sensor 204.
- the way of moving the diaphragm follows the parameters included in the light quantity feedback open / close control signal.
- the diaphragm can be operated when a predetermined condition is satisfied regardless of the luminance value of the video signal output from the image sensor.
- the diaphragm when the power is turned on in a predetermined condition, the diaphragm can be moved regardless of the amount of light, and the diaphragm is prevented from operating for a long period of time. Can be prevented.
- the aperture can be operated even when the brightness around the surveillance camera is constant. Thereby, the effect that the visibility fall of the surveillance camera by the adhering of an aperture stop can be prevented can be obtained.
- Embodiment 2 a solution for the same problem as in the first embodiment is disclosed. Differences from the first embodiment will be mainly described. Since the configuration diagram of the entire monitoring system including the monitoring camera according to the second embodiment of the present invention is the same as that of the first embodiment, description thereof will be omitted.
- FIG. 5 is a functional configuration diagram of the surveillance camera according to the second embodiment of the present invention.
- the opening / closing control unit 209 generates an opening / closing control signal and notifies the aperture opening / closing unit 203.
- the diaphragm opening / closing unit 203 operates the diaphragm 202 in accordance with the opening / closing control signal.
- the open / close control unit 209 generates an open / close control signal regardless of the luminance value of the video signal output from the image sensor 204 measured by the measurement unit 207. Specifically, the opening / closing control unit 209 generates an opening / closing control signal when a predetermined condition is satisfied.
- the opening / closing control unit 209 monitors the timer 501 that sets a predetermined cycle, and generates an opening / closing control signal for controlling the aperture opening / closing unit 203 when it is determined that the predetermined cycle is satisfied.
- FIG. 5 illustrates a case where a lens unit 211 including a light receiving unit 201, a diaphragm 202, and a diaphragm opening / closing unit 203 is connected to the camera body 212.
- the configuration is not limited to the configuration in FIG. 5, and for example, a lens unit 211 including a light receiving unit 201, a diaphragm 202, a diaphragm opening / closing unit 203, an opening / closing control unit 209, and a timer 501 may be connected to the camera body unit 212.
- FIG. 6 is a hardware configuration diagram of the surveillance camera according to the second embodiment of the present invention.
- the monitoring camera 101 is realized in hardware by a light receiving device 301, an aperture 302, a motor 303, a CPU (Central Processing Unit) 304, a memory 305, a timer 601, a transmission device 307, an image sensor 308, a measurement device 309, and the like.
- the hardware configuration of the monitoring camera 101 is not limited to the configuration of FIG.
- the timer 501 is constituted by a timer 601.
- FIG. 7 is an operation flowchart according to the second embodiment of the present invention.
- opening / closing control section 209 determines whether or not a predetermined cycle is satisfied, or whether or not a preset timer has expired.
- the process proceeds to step ST402.
- the process proceeds to step ST404.
- step ST702 the opening / closing control unit 209 resets the cycle or resets the timer.
- step ST404 the light amount feedback opening / closing control unit 208 determines whether or not the difference between the luminance value of the video signal output from the image sensor 204 and a predetermined value (threshold value) is larger than a predetermined allowable value. to decide. If larger than the allowable value, the process proceeds to step ST405. If it is within the allowable value, the process returns to step ST701.
- a predetermined value threshold value
- step ST406 the aperture opening / closing unit 203 operates the aperture according to the light amount feedback opening / closing control signal, and adjusts the amount of light passing through the light receiving unit 201 and the amount of light input to the image sensor 204.
- the way of moving the diaphragm follows the parameters included in the light quantity feedback open / close control signal.
- the diaphragm can be operated when a predetermined condition is satisfied regardless of the luminance value of the video signal output from the image sensor.
- the aperture can be operated even when the brightness around the surveillance camera is constant. Thereby, the effect that the visibility fall of the surveillance camera by the adhering of an aperture stop can be prevented can be obtained.
- Embodiment 3 In the third embodiment, a solution for the same problem as in the first and second embodiments is disclosed. Differences from the first and second embodiments will be mainly described. Since the configuration diagram of the entire surveillance system including the surveillance camera according to Embodiment 3 of the present invention is the same as that of Embodiment 1 and Embodiment 2, description thereof is omitted.
- FIG. 8 is a functional configuration diagram of the surveillance camera according to the third embodiment of the present invention.
- the opening / closing control unit 209 generates an opening / closing control signal and notifies the aperture opening / closing unit 203.
- the diaphragm opening / closing unit 203 operates the diaphragm 202 in accordance with the opening / closing control signal.
- the open / close control unit 209 generates an open / close control signal regardless of the luminance value of the video signal output from the image sensor 204 measured by the measurement unit 207.
- the opening / closing control unit 209 generates an opening / closing control signal when a predetermined condition is satisfied.
- a specific example of the predetermined condition is a case where the opening / closing control unit 209 monitors the light amount feedback opening / closing control unit, and the light amount feedback opening / closing control signal does not change for a predetermined period.
- the opening / closing control unit 209 refers to the timer 501 that sets a predetermined period, and generates an opening / closing control signal for controlling the aperture opening / closing unit 203 when the light amount feedback opening / closing control signal does not change during the predetermined period. .
- FIG. 8 illustrates a case where a lens unit 211 including a light receiving unit 201, a diaphragm 202, and a diaphragm opening / closing unit 203 is connected to the camera body 212.
- the configuration is not limited to the configuration illustrated in FIG. 8, and for example, a lens unit 211 including a light receiving unit 201, a diaphragm 202, a diaphragm opening / closing unit 203, an opening / closing control unit 209, and a timer 501 may be connected to the camera body unit 212.
- the open / close control unit 209 monitors the input light amount feedback open / close control signal.
- FIG. 9 is an operation flowchart according to the third embodiment of the present invention.
- the opening / closing control unit 209 determines whether or not the light amount feedback opening / closing control signal changes for a predetermined period, or whether a preset timer has expired.
- the process proceeds to step ST402.
- the process proceeds to step ST404.
- step ST902 the opening / closing control unit 209 resets the period or resets the timer.
- step ST404 the light amount feedback opening / closing control unit 208 determines whether or not the difference between the luminance value of the video signal output from the image sensor 204 and a predetermined value (threshold value) is larger than a predetermined allowable value. to decide. If larger than the allowable value, the process proceeds to step ST405. If it is within the allowable value, the process returns to step ST901.
- a predetermined value threshold value
- step ST406 the aperture opening / closing unit 203 operates the aperture according to the light amount feedback opening / closing control signal, and adjusts the amount of light passing through the light receiving unit 201 and the amount of light input to the image sensor 204.
- the way of moving the diaphragm follows the parameters included in the light quantity feedback open / close control signal.
- the diaphragm can be operated when a predetermined condition is satisfied regardless of the luminance value of the video signal output from the image sensor.
- the predetermined condition is that the light amount feedback opening / closing control signal does not change for a predetermined period, so that the diaphragm can be moved regardless of the light quantity, and the diaphragm can be controlled over a long period of time. It is possible to prevent the diaphragm from being operated and to prevent the diaphragm from sticking.
- the aperture can be operated even when the brightness around the surveillance camera is constant. Thereby, the effect that the visibility fall of the surveillance camera by the adhering of an aperture stop can be prevented can be obtained.
- Embodiment 4 FIG. In the fourth embodiment, a solution for the same problem as in the first embodiment, the second embodiment, and the third embodiment is disclosed. Differences from the first embodiment, the second embodiment, and the third embodiment will be mainly described. Since the configuration diagram of the entire surveillance system including the surveillance camera according to Embodiment 4 of the present invention is the same as that of Embodiment 1, Embodiment 2, and Embodiment 3, description thereof is omitted.
- FIG. 10 is a functional configuration diagram of the surveillance camera according to the fourth embodiment of the present invention.
- the opening / closing control unit 209 generates an opening / closing control signal and notifies the aperture opening / closing unit 203.
- the diaphragm opening / closing unit 203 operates the diaphragm 202 in accordance with the opening / closing control signal.
- the open / close control unit 209 generates an open / close control signal regardless of the luminance value of the video signal output from the image sensor 204 measured by the measurement unit 207. Specifically, the opening / closing control unit 209 generates an opening / closing control signal when a predetermined condition is satisfied.
- a specific example of the predetermined condition is a case where an aperture opening / closing instruction signal is input from the input unit 1001 to the opening / closing control unit 209.
- the opening / closing control unit 209 generates an opening / closing control signal for controlling the diaphragm opening / closing unit 203 when a diaphragm opening / closing instruction signal is input.
- FIG. 10 illustrates a case where a lens unit 211 including a light receiving unit 201, a diaphragm 202, and a diaphragm opening / closing unit 203 is connected to the camera body 212.
- the configuration is not limited to the configuration in FIG. 10, and for example, a lens unit 211 including a light receiving unit 201, a diaphragm 202, a diaphragm opening / closing unit 203, an opening / closing control unit 209, and an input unit 1001 may be connected to the camera body unit 212. .
- FIG. 11 is a hardware configuration diagram of the surveillance camera according to the fourth embodiment of the present invention.
- the monitoring camera 101 is realized in hardware by a light receiving device 301, an aperture 302, a motor 303, a CPU (Central Processing Unit) 304, a memory 305, an input device 1101, a transmitting device 307, an image sensor 308, a measuring device 309, and the like.
- the input unit 1001 is configured by an input device 1101. Specific examples of the input device 1101 include a mouse, a keyboard, a microphone, and a remote controller. Note that the hardware configuration of the monitoring camera 101 is not limited to the configuration of FIG.
- FIG. 12 is an operation flowchart according to the fourth embodiment of the present invention.
- the opening / closing control unit 209 determines whether there is an input of an aperture opening / closing instruction signal. If it is determined that there is an input, the process proceeds to step ST402. When it is determined that there is no input or when it is not determined that there is an input, the process proceeds to step ST404.
- step ST404 the light amount feedback opening / closing control unit 208 determines whether or not the difference between the luminance value of the video signal output from the image sensor 204 and a predetermined value (threshold value) is larger than a predetermined allowable value. to decide. If larger than the allowable value, the process proceeds to step ST405. If it is within the allowable value, the process returns to step ST1201.
- a predetermined value threshold value
- step ST406 the aperture opening / closing unit 203 operates the aperture according to the light amount feedback opening / closing control signal, and adjusts the amount of light passing through the light receiving unit 201 and the amount of light input to the image sensor 204.
- the way of moving the diaphragm follows the parameters included in the light quantity feedback open / close control signal.
- the diaphragm can be operated when a predetermined condition is satisfied regardless of the luminance value of the video signal output from the image sensor.
- the predetermined condition is that the aperture opening / closing instruction signal is input from the input unit, so that the aperture can be moved regardless of the amount of light, and the aperture is not operated for a long period of time. Can be avoided and sticking of the aperture can be prevented.
- the aperture can be operated even when the brightness around the surveillance camera is constant. Thereby, the effect that the visibility fall of the surveillance camera by the adhering of an aperture stop can be prevented can be obtained.
- Embodiment 5 In the first embodiment, since the diaphragm is operated regardless of the luminance value of the video signal output from the image sensor, there is a problem in that the output video repeats light and dark and gives viewers discomfort.
- a predetermined image is output instead of a captured image during a period in which the aperture is operated regardless of the luminance value of the video signal output from the image sensor.
- the aperture is operated according to the notification of the opening / closing control unit 209 or according to the opening / closing control signal, or during the operation period, the captured image is not output from the image sensor, or is output from the image sensor.
- a predetermined image is output instead of the video. Differences from the first embodiment will be mainly described.
- FIG. 13 is a functional configuration diagram of the surveillance camera according to the fifth embodiment of the present invention.
- the opening / closing control unit 209 generates an opening / closing control signal and notifies the aperture opening / closing unit 203 and the video switching unit 1301.
- the diaphragm opening / closing unit 203 operates the diaphragm 202 in accordance with the opening / closing control signal.
- the open / close control unit 209 generates an open / close control signal regardless of the luminance value of the video signal output from the image sensor 204 measured by the measurement unit 207. Specifically, the opening / closing control unit 209 generates an opening / closing control signal when a predetermined condition is satisfied.
- the opening / closing control unit 209 monitors the power supply unit 210 and generates an opening / closing control signal for controlling the aperture opening / closing unit 203 and the video switching unit 1301 when determining that the power is turned on.
- the video switching unit 1301 outputs a predetermined image via the video transmission unit 206 instead of the video imaged by the imaging element 204 during the period in which the diaphragm 202 operates according to the open / close control signal.
- the video switching unit 1301 stops the output of the video imaged by the imaging device 204 to the video transmission unit 206, the video processing unit 205, or the imaging device 204 during the period in which the aperture 202 operates in accordance with the open / close control signal. Instruct.
- a predetermined time after the diaphragm 202 starts operating according to the opening / closing control signal, or the diaphragm opening / closing unit 203 or the diaphragm 202 is monitored.
- a period during which the diaphragm 202 is operating according to the open / close control signal may be used.
- the predetermined image include a fixed screen, for example, a monochrome screen such as a blue background, a screen with an explanatory text such as “Checking iris operation”, and before the diaphragm 202 starts operating in response to the open / close control signal. There are recorded images (past images).
- the hardware configuration diagram of the surveillance camera 101 according to the fifth embodiment of the present invention is the same as that of the first embodiment, and is not shown.
- the video switching unit 1301 includes a CPU 304 and a memory 305.
- FIG. 14 is an operation flowchart according to the fifth embodiment of the present invention.
- video switching section 1301 outputs a predetermined image instead of the captured video.
- step ST1402 the video switching unit 1301 determines whether or not the aperture is operating. If it is determined that the aperture is operating, the process returns to step ST1401. If it is determined that the aperture is not operating, the process proceeds to step 1403.
- step ST1403 the video switching unit 1301 outputs the captured video, and proceeds to step ST403.
- a predetermined image, not a captured image is output during the aperture operation period regardless of the luminance value of the image signal output from the image sensor. can do. As a result, it is possible to prevent the video from repeating brightness and darkness, and to prevent the viewer from being uncomfortable.
- Embodiment 5 can be used in combination with Embodiment 2, Embodiment 3, and Embodiment 4, and the same effect can be obtained.
- 201 light receiving unit 202 aperture, 203 aperture opening / closing unit, 204 image sensor, 208 light quantity feedback opening / closing control unit, 209 opening / closing control unit, 1001 input unit.
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- Physics & Mathematics (AREA)
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- Studio Devices (AREA)
- Exposure Control For Cameras (AREA)
- Diaphragms For Cameras (AREA)
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Abstract
Description
図1は、この発明の実施の形態1による監視カメラを含む監視システム全体の構成図である。図1において、監視カメラ101、監視用PC102及びレコーダ103はそれぞれ、ネットワーク104に接続されている。そして、監視カメラ101により対象領域を撮影することで得られた映像は、監視用PC102により監視され、レコーダ103に記録され、モニタ105に表示される。映像は、画像でもよい。また、監視用PC102とレコーダ103、レコーダ103とモニタ105、監視用PC102とレコーダ103とモニタ105は一体の装置であってもよい。
本実施の形態2では、実施の形態1同様の課題についての解決策を開示する。実施の形態1とは異なる点を主に説明する。この発明の実施の形態2による監視カメラを含む監視システム全体の構成図は、実施の形態1と同様であるので、説明を省略する。
本実施の形態3では、実施の形態1、実施の形態2同様の課題についての解決策を開示する。実施の形態1、実施の形態2とは異なる点を主に説明する。この発明の実施の形態3による監視カメラを含む監視システム全体の構成図は、実施の形態1、実施の形態2と同様であるので、説明を省略する
本実施の形態4では、実施の形態1、実施の形態2、実施の形態3同様の課題についての解決策を開示する。実施の形態1、実施の形態2、実施の形態3とは異なる点を主に説明する。この発明の実施の形態4による監視カメラを含む監視システム全体の構成図は、実施の形態1、実施の形態2、実施の形態3と同様であるので、説明を省略する。
実施の形態1では、撮像素子から出力される映像信号の輝度値に関係なく絞りを動作させることから、出力される映像が明暗を繰り返し、見る人に不快感を与えるとの課題が発生する。実施の形態5では、撮像素子から出力される映像信号の輝度値に関係なく絞りを動作させる期間において、撮像した映像ではなく、予め決められた画像を出力する。開閉制御部209の通知に応じて、あるいは開閉制御信号に応じて絞りを動作させる場合、あるいは動作する期間において、撮像素子から出力される撮像した映像ではなく、あるいは撮像素子から出力される撮像した映像の代わりに予め決められた画像を出力する。実施の形態1とは異なる点を主に説明する。
Claims (9)
- 受光部と、
前記受光部を通過する光の量を調整する絞りと、
絞り開閉部と、
前記受光部を通過した光を映像信号に変換する撮像素子と、
前記映像信号の輝度に応じて前記絞りを開閉するよう前記絞り開閉部を制御する光量フィードバック開閉制御部と、
前記映像信号の輝度に応じてではなく、予め決められた条件を満たした場合に前記絞りを開閉するよう前記絞り開閉部を制御する開閉制御部と
を備えた監視カメラ。 - 予め決められた条件を満たした場合とは、電源が投入されたと判断した場合であること
を特徴とする請求項1記載の監視カメラ。 - 予め決められた条件を満たした場合とは、予め決められた周期が満たされた場合であること
を特徴とする請求項1記載の監視カメラ。 - 予め決められた条件を満たした場合とは、予め決められた期間に前記光量フィードバック開閉制御部による前記絞りの開閉制御がないと判断した場合であること
を特徴とする請求項1記載の監視カメラ。 - 入力部を備え、
予め決められた条件を満たした場合とは、前記入力部より絞り開閉指示信号が入力された場合であること
を特徴とする請求項1記載の監視カメラ。 - 前記開閉制御部が前記絞りを開閉するよう前記絞り開閉部を制御する場合、前記絞り開閉部は、前記絞りを最速で動作させること
を特徴とする請求項1ないし請求項5のいずれか一項に記載の監視カメラ。 - 前記開閉制御部が前記絞りを開閉するよう前記絞り開閉部を制御する場合、前記絞り開閉部は、前記絞りを振動するよう動作させること
を特徴とする請求項1ないし請求項5のいずれか一項に記載の監視カメラ。 - 前記開閉制御部が前記絞りを開閉するよう前記絞り開閉部を制御する場合、前記絞り開閉部は、前記絞りを最大に開いた状態、あるいは絞が最小に閉じた状態、あるいは絞りが最大に開いた状態と最少に閉じた状態の双方に動作させること
を特徴とする請求項1ないし請求項5のいずれか一項に記載の監視カメラ。 - 前記開閉制御部の通知に応じて前記絞りを動作させる場合、撮像素子から出力される映像の代わりに予め決められた画像を出力すること
を特徴とする請求項1ないし請求項8のいずれか一項に記載の監視カメラ。
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JP2018506655A JPWO2017163311A1 (ja) | 2016-03-22 | 2016-03-22 | 監視カメラ |
PCT/JP2016/058985 WO2017163311A1 (ja) | 2016-03-22 | 2016-03-22 | 監視カメラ |
US16/085,475 US20190086767A1 (en) | 2016-03-22 | 2016-03-22 | Monitoring camera |
EP16895347.9A EP3435657A1 (en) | 2016-03-22 | 2016-03-22 | Monitoring camera |
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PCT/JP2016/058985 WO2017163311A1 (ja) | 2016-03-22 | 2016-03-22 | 監視カメラ |
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US (1) | US20190086767A1 (ja) |
EP (1) | EP3435657A1 (ja) |
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WO (1) | WO2017163311A1 (ja) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006287723A (ja) * | 2005-04-01 | 2006-10-19 | Mitsubishi Electric Corp | Cctvカメラ装置 |
JP2007006396A (ja) * | 2005-06-27 | 2007-01-11 | Victor Co Of Japan Ltd | 撮像装置、この撮像装置のアイリス調整および電子シャッターの調整方法 |
JP2008118609A (ja) * | 2006-10-13 | 2008-05-22 | Sony Corp | 撮像システムおよび画素欠陥補正装置 |
JP2012110027A (ja) | 2012-01-30 | 2012-06-07 | Jvc Kenwood Corp | ビデオカメラ及びその制御方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4529779B2 (ja) * | 2005-04-20 | 2010-08-25 | 株式会社日立製作所 | 監視システム |
JP2008236669A (ja) * | 2007-03-23 | 2008-10-02 | Canon Inc | 撮像装置及びその制御方法及びプログラム及び記憶媒体 |
JP5013964B2 (ja) * | 2007-05-23 | 2012-08-29 | キヤノン株式会社 | 撮像装置及びその制御方法 |
US20090244360A1 (en) * | 2008-03-28 | 2009-10-01 | Panasonic Corporation | Camera System And Camera Body Composing The Same |
JP5948908B2 (ja) * | 2012-01-31 | 2016-07-06 | リコーイメージング株式会社 | レンズ交換式カメラの絞り制御装置 |
-
2016
- 2016-03-22 EP EP16895347.9A patent/EP3435657A1/en not_active Withdrawn
- 2016-03-22 US US16/085,475 patent/US20190086767A1/en not_active Abandoned
- 2016-03-22 JP JP2018506655A patent/JPWO2017163311A1/ja active Pending
- 2016-03-22 WO PCT/JP2016/058985 patent/WO2017163311A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006287723A (ja) * | 2005-04-01 | 2006-10-19 | Mitsubishi Electric Corp | Cctvカメラ装置 |
JP2007006396A (ja) * | 2005-06-27 | 2007-01-11 | Victor Co Of Japan Ltd | 撮像装置、この撮像装置のアイリス調整および電子シャッターの調整方法 |
JP2008118609A (ja) * | 2006-10-13 | 2008-05-22 | Sony Corp | 撮像システムおよび画素欠陥補正装置 |
JP2012110027A (ja) | 2012-01-30 | 2012-06-07 | Jvc Kenwood Corp | ビデオカメラ及びその制御方法 |
Non-Patent Citations (1)
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EP3435657A4 (en) | 2019-01-30 |
JPWO2017163311A1 (ja) | 2018-11-08 |
US20190086767A1 (en) | 2019-03-21 |
EP3435657A1 (en) | 2019-01-30 |
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