JP6351151B2 - Image sensor check adapter and image sensor - Google Patents

Description

  The present invention relates to an operation confirmation device that performs an operation check of a monitoring device that determines intrusion of an object based on a monitoring image obtained by imaging an object in a monitoring region, and a monitoring device including the operation confirmation device.

Conventionally, there is known an intrusion detection system that can wirelessly communicate with a plurality of mobile terminals, detects an intruder into a facility surrounded by a fence, and issues an alarm (see Patent Document 1).
The intrusion detection system includes a plurality of intrusion detection sensors that divide the fence into a plurality of detection areas and detect an intruder for each detection area, and the detection result of each of the detection areas includes the plurality of intrusion detection sensors. An intrusion detection unit that transmits intrusion information with an address corresponding to each by wireless communication, and information on a first mobile terminal that is a mobile terminal capable of receiving various types of information can be registered, and the intrusion detection unit A monitoring unit that transmits alarm information to the first portable terminal by wireless communication based on the intrusion information received from the mobile phone.

JP 2006-163659 A

However, in the intrusion detection system described in Patent Document 1 described above, the intrusion detection unit transmits a normal operation signal to the monitoring unit at regular intervals, and the monitoring unit cannot confirm reception of the normal operation signal at regular intervals. The intrusion detection unit is determined to have failed, and failure information is transmitted to the first portable terminal (claim 4, paragraph 0028 of Patent Document 1).
In other words, the intrusion detection system described in Patent Document 1 always imposes a load on the monitoring unit (CPU) to determine whether or not there is a failure in addition to a load for detecting the presence or absence of an intruder. When transmitting the detection to the portable terminal, there is a possibility that processing delay or the like may occur.
In addition, the intrusion detection system disclosed in Patent Document 1 determines that the intrusion detection unit has failed when a normal operation signal is transmitted at regular intervals from the beginning of manufacture or when reception of normal operation signals at regular intervals cannot be confirmed. The structure must be incorporated, resulting in a complicated structure and an increased cost.

  In view of such a point, the present invention connects an operation check device that causes a determination unit to make a determination based on a composite image obtained by combining an object image between the imaging unit and the determination unit. It is an object of the present invention to provide an operation confirmation device and a monitoring device that can realize a simplified structure and a reduced cost.

The operation confirmation apparatus 1 according to the present invention confirms the monitoring operation in the monitoring apparatus S that determines the intrusion of the object T into the monitoring area K based on the monitoring image G1 obtained by imaging the object T in the monitoring area K. And connected between the image pickup means C for picking up the object T in the monitoring area K and the determination means J for determining the intrusion of the object T based on the monitoring image G1 from the image pickup means C. The monitoring device S is caused to determine the intrusion of the object T based on a composite image G3 obtained by synthesizing the monitoring image G1 and an object image G2 simulating the intruding object T instead of the monitoring image G1. have confirmed a monitoring operation in the monitor have a synthesis unit 3 for synthesizing the object image G2 on the image G1, the combining unit 3, the monitoring image vertical synchronizing signal from the analog signal G1 N2 and horizontal synchronizing signal N A synchronization block 31 to separate, the have a object generation block 32 for generating an object image G2, in the synchronization block 31, of the analog signal of the monitoring image G1, the portion thereof potential is 0V, The vertical synchronizing portion corresponding to the vertical synchronizing signal N2 or the horizontal synchronizing portion corresponding to the horizontal synchronizing signal N3 is used. In the synchronizing block 31, the time when the vertical synchronizing portion is 0V is the horizontal synchronizing portion. The vertical synchronization signal N2 and the horizontal synchronization signal N3 are distinguished from each other by being a multiple of the time when V is 0V, and the synchronization block 31 determines that the current scanning line is the entire scanning line from the analog signal of the monitoring image G1. Of these, the odd / even field signal N1 indicating whether it is an odd-numbered scan line or an even-numbered scan line is also separated. The object generation block 32 outputs to the object generation block 32. The object generation block 32 receives only the odd / even field signal N1 from the synchronization block 31, and the field number signal N8 from the field number counter 35. Only the start position block 36 for calculating the start position of the object image G2 in the monitoring image G1 and the start position block 36 from which only the start position signal N9 is input and the object image G2 in the monitoring image G1 An end position block 37 for calculating an end position, and an area for calculating an area from the start position to the end position of the object image G2 in the monitoring image G1 by inputting only the end position signal N10 from the end position block 37. The field number counter 35 has a block 38 and the external input 12 When the composite signal N7 is input, the number of rising and falling edges of the odd / even field signal N1 is first counted, and the counted number is output as the field number signal N8 to the start position block 36, and the field the number counter 35, the among signals included in the analog signal of the monitoring image G1, the first feature that you enter only the odd / even field signal N1.

A second aspect of the operation check device 1 according to the present invention, in addition to the first feature, the object generation block 32, from the start position of the object image G2 of the previous SL in the monitoring image G1 to the end position An area block 38 that determines a color and its position in an area in between and outputs the area signal N11 including the determined color and its position, and counts the number of vertical synchronization portions of the monitoring image G1 and counts the vertical A vertical synchronization counter 39a that outputs a vertical data signal N12 including at least the number of synchronization portions, and a horizontal data signal N13 that counts the number of horizontal synchronization portions of the monitoring image G1 and includes at least the counted number of horizontal synchronization portions. The horizontal synchronization counter 39b also has a vertical synchronization signal N1 from the time when the external input 12 is turned on. Reading of 2 starts, the horizontal synchronization counter 39b is in the point you begin to read the horizontal synchronizing signal N13.

The third feature of the operation checking apparatus 1 according to the present invention is that, in addition to the second feature, the object generation block 32 is configured such that the vertical data signal N12 from the vertical synchronization counter 39a and the horizontal synchronization counter 39b A synthesis instruction block 40 for instructing where to superimpose the object image G2 on the monitoring image G1 based on the data signal N13 is also included. The flag in the synthesis instruction block 40 is the horizontal synchronization counter 39b. Rises when the number of horizontal synchronization parts counted by the number coincides with the number of horizontal synchronization parts corresponding to the start position of the object image G2 determined in the area block 38, and at the rise of this flag, the combination instruction block 40 The potential of the compositing instruction signal N14 output from is also increased, and the compositing unit 3 combines the object image G2 with the monitoring image G1. At the same time, the flag in the compositing instruction block 40 indicates the horizontal synchronization portion corresponding to the end position of the object image G2 in which the number of horizontal synchronization portions counted by the horizontal synchronization counter 39b is determined in the area block 38. When the flag rises and the flag rises, the potential of the synthesis instruction signal N14 output from the synthesis instruction block 40 drops, and the synthesis unit 3 synthesizes the object image G2 with the monitoring image G1. The synthesis instruction block 40 converts the analog signal of the monitoring image G1 into either the light color signal N16 corresponding to the light color portion G2 ′ or the dark color signal N17 corresponding to the dark color portion G2 ″ in the object image G2. A light / dark instruction signal N15 indicating whether to replace is also output, and the object generation block 32 outputs a light / dark instruction from the composition instruction block 40. The light / dark block 41 for outputting the light color signal N16 or the dark color signal N17 to the switching unit 5 based on the signal N15 is also included. The light / dark block 41 includes the light color portion G2 ′ as the light color signal N16. And an electric signal maintaining a potential corresponding to the dark color portion G2 ″ is input as the dark color signal N17 .

The fourth feature of the operation checking device 1 according to the present invention is that, in addition to the first to third features, an input for inputting a monitoring image G1 from the imaging means C and connecting to the imaging means C so as to be retrofitted. The combining unit 3 can combine the object image G2 with the monitoring image G1 input from the input unit 2, and output the combined image G3 combined by the combining unit 3 to the determination unit J; The output unit 4 is connected to the determination unit J so as to be retrofitted, and an output image G4 output from the output unit 4 to the determination unit J is directly input to the composite image G3 and the imaging unit C. The switching unit 5 that can be switched to one of the monitoring images G1 is also provided .

Due to these characteristics, the same operation as in the prior art is achieved by connecting the operation checking device 1 between the image pickup unit C and the determination unit J to cause the determination unit J to determine based on the composite image G3 obtained by combining the monitoring image G1 and the object image G2. Even with the imaging means C and the determination means J having the configuration, the operation of the monitoring device S can be confirmed, and the determination means J simply performs the same processing regardless of whether it is the monitoring image G1 or the composite image G3. Since the operation can be confirmed with, an extra load is not applied to the judging means J.
That is, even if the operation check device 1 is attached to the monitoring device S, there is no processing delay or the like.
Further, unlike Patent Document 1, it is not necessary to incorporate a configuration such as transmission of a normal operation signal from the beginning of manufacture, and the imaging unit C and the determination unit J have the same configuration as the conventional configuration. The structure can be simplified and the cost can be reduced.
Therefore, according to the operation check apparatus 1 of the present invention, both “reduction of processing load” and “simplification / cost reduction” can be achieved.

Further, the input unit 2 is connected to the imaging unit C, the output unit 4 is connected to the determination unit J as a retrofit, and the switching unit 5 that switches the output image G4 to either the composite image G3 or the monitoring image G1 is provided. Even for the monitoring apparatus S that has already been installed, it is possible to add an operation confirmation function to the monitoring apparatus S without changing the configuration of the imaging means C and the determination means J in the monitoring apparatus S.
At the same time, it is only necessary to add the cost of the operation check device 1 to the existing monitoring device S, so that the cost can be further reduced.

  Furthermore, it has a state output unit 6 having both a contact for closing the contact in the image disconnection state α and a contact b for opening the contact in the image disconnection state α. The number of types of equipment that can be used increases and versatility improves.

The object image G2 is imaged by having a light color part G2 ′ having an L ^* value of 80 or more converted into PCSLAB in a profile combination space according to JIS-X-9207: 2012, and a dark color part G2 ″ having 20 or less. Regardless of the brightness / hue of the monitoring image G1 (that is, the background) from the means C, either the light color portion G2 ′ or the dark color portion G2 ″ can be identified from the background, and the type of the image pickup means C Regardless of the condition, the determination means J is determined to be the object T that has entered the monitoring area K.
In particular, the bright color portion G2 ′ having an L ^* value of 80 or more appears white to human vision, and the imaging means C is, for example, an infrared camera (infrared passive sensor) that images the monitoring region K. Since the object T such as an invading person looks white in the monitoring image G1 captured by these, any image having the bright color portion G2 ′ can be used as the object image G2 imitating the object T.
In particular, the bright color portion G2 ′ having an L ^* value of 80 or more appears white to human vision, and the imaging means C is, for example, a video camera for imaging the monitoring area K or an infrared camera (infrared passive sensor). Even so, since the monitoring images G1 (that is, the background) captured by these have various colors, any image having a light color portion G2 ′ and a dark color portion G2 ″ can be recognized as different from the background. Therefore, it can be used as the object image G2 simulating the object T regardless of the type of the imaging means C.

Monitoring apparatus S according to the present invention is characterized in that it possess an operation check device 1 described above.
With this feature, the structure of the monitoring device S can be simplified and the cost can be reduced without imposing an extra processing burden on the judging means J.

  According to the operation check device and the monitoring device according to the present invention, an operation check device that causes the determination unit to make a determination based on a composite image obtained by combining the object images is connected between the imaging unit and the determination unit. Reduction ”and“ simplification and cost reduction ”.

(A) is a schematic diagram which shows a monitoring apparatus, (b) is a schematic diagram which shows a monitoring apparatus and the operation confirmation apparatus based on this invention. It is a perspective view which shows the external appearance of the operation confirmation apparatus which concerns on this invention. It is a block diagram of an operation check device. It is a block diagram of an operation check device in case an electric signal of a surveillance picture is an analog signal. It is a time chart figure of an operation check device in case an electric signal of a surveillance picture is an analog signal. It is a top view which illustrates the monitoring field which a monitoring device monitors. It is a figure which illustrates the monitoring image which the imaging means (video camera) of the monitoring apparatus imaged, Comprising: (G1-1) is a figure which shows the monitoring image when nothing invades, (G1-2) is It is a figure which shows the monitoring image immediately after a person invades, (G1-3) is a figure which shows the monitoring image when a person invades for a while, (G1-4) It is a figure which shows the monitoring image when it passes for a while. It is a figure which illustrates the synthesized image of the operation confirmation apparatus which synthesize | combined the object image with the monitoring image which the imaging means (video camera) imaged, Comprising: (G3-1) shows a synthesized image when nothing invades. (G3-2) is a diagram showing a composite image immediately after the object has entered, (G3-3) is a diagram showing a composite image when the object has entered for a while, and (G3 FIG. 4-4 is a diagram illustrating a composite image when an object has entered and a while has passed. It is a figure which illustrates the object image of an operation check device, (a) is a figure showing the object image itself (Example 1), and (b) is a figure showing the motion of an object image. FIG. 7 is a diagram illustrating an example of an object image of the operation check device, where (a) is a diagram illustrating another example of the object image (Example 2), and (b) is another example of the object image (Example 3). ). (A) is a figure which illustrates the monitoring image which the imaging means (infrared camera) imaged, (b) is a figure which illustrates the synthesized image of the operation confirmation apparatus which synthesize | combined the object image with the said monitoring image.

Embodiments of the present invention will be described in detail with reference to FIGS.
<Overall configuration (operation check device 1, monitoring device S)>
FIG. 1 shows an operation check apparatus 1 according to the present invention.
The operation confirmation device 1 is for confirming (operation check) a monitoring operation performed by the monitoring device S that monitors the monitoring region K.

The monitoring device S to be checked by the operation checking device 1 of the present invention is a device that determines the intrusion of the object T into the monitoring region K based on the monitoring image G1 obtained by imaging the object T in the monitoring region K. The image pickup means C has an image pickup means C for picking up an image of the object T in the monitoring area K, and a determination means J for determining the intrusion of the object T based on the monitor image G1 from the image pickup means C.
For such a monitoring device S, the operation confirmation device 1 is connected between the imaging unit C and the determination unit J, and based on the composite image G3 obtained by combining the monitoring image G1 and the object image G2, the object T The monitoring device S confirms the monitoring operation of the monitoring device S by causing the determination means J to determine the intrusion.

The monitoring device S may have any configuration as long as it has the above-described imaging means C and determination means J. For example, if the imaging means C is mentioned, the imaging means C is a video camera. Or an infrared camera or a night vision device (that is, the monitoring device S is an image sensor).
In the following, the case where the imaging means C is the video camera C will be described in detail.

<Imaging means (video camera) C>
As shown in FIGS. 1 and 6, the imaging means (video camera) C images the object T in the monitoring area K, and outputs an electrical signal corresponding to the monitoring image G1 obtained by imaging the monitoring area K. , And output to the judging means J (see FIG. 1A) and the operation check device 1 (see FIG. 1B).
The video camera C includes an optical unit that collects light, a photoelectric conversion unit (imaging unit) that converts the condensed light into an electrical signal, and a signal output unit that outputs the converted current signal. Yes.

The video camera C may be installed either indoors or outdoors. For example, FIG. 6 shows an imaging means (video camera) C when installed indoors and its monitoring area. K is shown.
The video camera C may be a fixed type (that is, the monitoring area K to be imaged is fixed). It may be movable so that the monitoring area K can be changed.
The video camera C may include a sound collection unit (microphone) that converts sound collected in the monitoring region K into an electric signal (sound signal).

The optical part of the video camera C collects and separates light with a lens, a prism, etc., and projects the light from the monitoring region K as an image (image) on the above-described imaging unit. Becomes the monitoring image G1.
Further, the shutter speed and aperture (exposure amount) when the monitoring image G1 is projected may be adjusted.
The image captured by the video camera C may be a black and white image (monochrome image) or a color image.

The photoelectric conversion unit (imaging unit) of the video camera C is a solid-state imaging device such as a CCD or CMOS, and converts light projected as an image through the optical unit into an electrical signal (image signal).
Note that other members such as an imaging tube may be used as long as light can be converted into an electrical signal.

The signal output unit of the video camera C outputs the electrical signal from the photoelectric conversion unit (that is, the image signal of the monitoring image G1) to the operation check device 1, the determination unit J, and the like at predetermined time intervals.
Any type of image signal may be output, but for example, the NTSC method (EIA RS-190, EIA RS-190A, SMPTE-170M) may be used. A PAL system or a SECAM system may be used.

The predetermined time interval for outputting the monitoring image G1 may be any as long as it is possible to determine the intrusion of the object T into the monitoring region K. For example, in the case of the NTSC system, it is 1 second. About 30 frames (30 frames for black and white images, 29.97 frames for color images), and 25 frames per second for PAL and SECAM systems.
The signal output unit may convert the image signal of the monitoring image G1 from an analog signal (analog image signal) to a digital signal (digital image signal). In this case, the digital image signal is converted into a predetermined time interval (for example, , One frame every 0.2 seconds (2 frames per second), 1 frame every 0.5 seconds (5 frames per second, etc.) may be sequentially output.

<Transmission means D>
The electrical signal of the monitoring image G1 from the image pickup means (video camera) C as described above is output to devices such as the operation check device 1 and the judgment means J of the present invention described later via the transmission means D such as a coaxial cable. Is done.
The transmission means D described above may be provided with connectors (for example, males) at both ends thereof. In this case, the connector can be attached to and detached from the operation check device 1 or the judgment means J of the present invention. It may be connected (that is, the operation check device 1 of the present invention is configured to be retrofitted as an adapter with respect to the imaging means C and the determination means J).
The transmission means D is not configured to be detachable with a connector or the like with respect to the operation confirmation apparatus 1, the image pickup means C, the judgment means J, etc. of the present invention. It may be provided between the imaging means (video camera) C and the judging means J).

The transmission means D described above may include not only a part for transmitting an image signal but also a part for supplying power to the imaging means (video camera) C and sending a control signal for controlling the imaging means C. I do not care.
Further, the transmission means D may output to the determination means J and to the display means such as a monitor.

<Judgment means J>
As shown in FIG. 1, the determination unit J outputs an electrical signal (see FIG. 1A) corresponding to the monitoring image G <b> 1 output from the imaging unit (video camera) C, or the operation check device 1. Then, an electrical signal (see FIG. 1B) corresponding to the output image G4 (either the composite image G3 or the monitoring image G1) is input to determine whether or not the object T has entered the monitoring region K. Is.
The determination means J may have any configuration as long as it can determine the intrusion of the object T. First, as an example of a method for determining whether the object T has entered the monitoring region K by image processing, a background difference method is used. And an inter-frame difference method.

<Background difference method>
First, the principle of the background difference method will be described with reference to FIG.
As shown in FIG. 7 (G1-1), at the beginning of installation of the monitoring device S, the monitoring image G1 obtained by imaging the monitoring area K with the imaging means (video camera) C is set as a reference image (reference monitoring image) G1-1. Remember.
This reference image G1-1 is an image of only the background in which no object T entering the monitoring area K exists.
After the reference image G1-1 is imaged, the monitoring area K is continuously imaged by the video camera C during the monitoring operation by the monitoring device S.

As shown in FIG. 7 (G1-2), an intruder (object) is temporarily added to the current monitoring image G1 (current image (current monitoring image) G1-2) obtained by imaging the state of the monitoring region K during the monitoring operation. Suppose T) is reflected.
The current image G1-2 and the reference image G1-1 are compared, and a difference (luminance difference, luminance is binarized by a predetermined threshold) is extracted for each pixel (pixel), thereby obtaining a difference image. obtain.

When the intruder T exists in the current image G1-2, the intruder T is detected as a change area.
In the background difference method, for example, when a change area having a predetermined size or more is detected, it is determined that the intruder T has entered the monitoring area K.

<Difference method between frames>
Next, the principle of the inter-frame difference method will be described.
This inter-frame difference method is different from the background difference method described above, and during the monitoring operation by the monitoring device S, the monitoring region K is continuously imaged by the imaging means C, and each time the monitoring image G1 (monitoring image G1) is detected. -2, surveillance image G1-3, surveillance image G1-4).

For example, the difference image is obtained by comparing the monitoring image G1-4 with the monitoring image G1-3 one frame before the image G1-4 and extracting the difference for each pixel.
In addition, this difference image is good also as comparing the monitoring image G1-4 with the monitoring image G1 before 2 frames, such as comparing the monitoring image G1-2 before 2 frames from this image G1-4.
In the example of FIG. 7, the intruder T is shown in both the monitoring image G1-3 and the monitoring image G1-2, and the intruder T moves between the images G1-2 and G1-3.

In this case, in the difference image, a difference due to the movement of the intruder T is detected as a change area.
In the inter-frame difference method, for example, it is determined whether or not the intruder T exists in the monitoring area K from the size of the change area, the movement distance, and the like.

<Configuration of determination means J>
As long as the above-described method is realized, the determination unit J may have any configuration. For example, an image processing unit that inputs and processes an electrical signal of the monitoring image G1 from the imaging unit (video camera) C. A storage unit that stores a reference image used in the above-described image processing in the image processing unit, and a control unit that controls the storage unit, the image processing unit, and the imaging unit C.
In addition, the determination unit J may include an intrusion presence / absence output unit that outputs the presence / absence of the intrusion of the object T determined by the control unit.

In addition, when the electrical signal of the monitoring image G1 from the imaging unit C is an analog signal, the determination unit J may include an A / D conversion unit that converts the analog signal into a digital signal.
For the A / D converter, if the output from the imaging means C or the operation checking device 1 is an already digitized electric signal, or the judging means J judges as an analog signal, The judging means J need not have this A / D conversion section.
The determination unit J may be installed anywhere as long as the object T can be determined to enter the monitoring region K based on the monitoring image G1 from the imaging unit C. A person (such as a security guard or a person in charge of a security company) who monitors the monitoring area K through the transmission means D from the imaging means C installed outdoors or the like, the imaging means C, the judgment means J, and the operation check device It may be installed in a place where 1 can be operated (in a security room, a security company, etc.).

The image processing unit of the determination unit J is an image processing IC, an image memory, or the like, and may have any configuration as long as determination processing such as the background difference method and the inter-frame difference method described above is performed. For example, an electrical signal (analog signal or digital signal) of a difference image (a difference image between the reference image and the current image, or a difference image between the monitoring image and the current image one or more frames before) of the monitoring image G1 from the imaging unit C. The luminance of each pixel indicated by () is binarized.
In this binarization, for example, if the luminance of each pixel in the difference image is equal to or higher than a predetermined threshold, the value of the pixel is set to 1, and if the luminance does not exceed the predetermined threshold, the value of the pixel is set to 0.

In this way, the pixel having a value of 1 becomes a change area, and the image processing unit always extracts this change area over time, and applies a predetermined algorithm using the size of the change area, the moving distance, and the like. Based on this, it is determined whether or not the object T in the change area is an object (intruder) T that has entered the monitoring area K.
The image processing unit also calculates parameters and attribute information necessary for the determination processing such as the background difference method and the inter-frame difference method described above, and analyzes the difference image using them. It is used when judging.

In addition, when the imaging means (video camera) C of the monitoring device S is installed indoors in the algorithm for determining the intrusion of the object T, the image processing unit blinks illumination, flickers such as fluorescent lights, and air conditioning equipment. (Air conditioner), etc. The curtains were shaken, the light inserted through the windows, the shadows reflected in the windows, spiders (insects), spider webs, moving objects (people standing in front of facilities such as ATMs) T, etc. Even if an object (suspicious object) T or the like is in the monitoring region K, it may have a function that does not cause a malfunction.
In addition, the algorithm for determining the intrusion of the object T is that, when the image pickup means C is installed outdoors, the weather such as rain, snow, fog, hail, wind, etc. You may have the function which considered insects and dust, such as a frog and a moth.

The storage unit of the determination unit J stores a program for executing the above-described background difference method, inter-frame difference method, and the like. In addition, an image to be processed by the image processing unit, parameters necessary for the calculation, monitoring region Various information such as the state of K and the operation mode of the imaging means C may be stored in an updatable manner.
If the determination means J has an intrusion presence / absence output section, the intrusion presence / absence output section displays the final determination result (whether an intruder (object) T has entered the monitoring area K) or not. For example, a notification is made via an alarm device such as a bell or a monitor.
The control unit of the determination unit J controls the above-described image processing unit, storage unit, and the imaging unit C in order to determine the intrusion of the object T.

The determination means J may be other than the one that automatically determines the intrusion of the object T, and the user may determine the monitoring image G1 displayed on the display means such as a monitor.
Further, in this way, when the user makes a determination, it can be said that the display means is included in the determination means J.

<Configuration of the operation check device 1>
As shown in FIGS. 2 to 4, the operation check apparatus 1 includes an input unit 2 that can be connected to the imaging unit C described above, a combining unit 3 that combines the object image G2 with the monitoring image G1, and the determination unit described above. An output unit 4 that can be connected to J, a switching unit 5 that can switch the output image G4 to either the composite image G3 or the monitoring image G1, and a state output unit 6 that outputs a signal indicating the image disconnection state α. Yes.
The operation checking device 1 may be a casing 11 of any shape / material as long as the input unit 2, the synthesis unit 3, the output unit 4, the switching unit 5, the state output unit 6, and the like can be incorporated. However, for example, a substantially rectangular parallelepiped shape formed of resin may be used.

Further, the operation check apparatus 1 has an external input 12 for inputting a control signal for causing the determination means J to output the composite image G3, and a setting switch (setting SW) 13 for inputting the speed, size, operation pattern, etc. of the object image G2. Also have.
In addition to the external input 12 and the setting switch 13, the input unit 2, the output unit 4, and the state output unit 6 are provided in the casing 11 described above.

In addition to this, the operation check apparatus 1 includes a power input 14 and an LED 15 indicating each state. Among these, the LED 15 is also provided in the housing 11.
The casing 11 of the operation check device 1 may be installed using a DIN (Deutsche Industrie Normen: German Industrial Standard) rail 16 (see FIG. 2). The operation check device 1 is attached to the DIN rail 16. The DIN mounting plate 17 is attached.

The installation place of the operation check apparatus 1 may be any place as long as it is connected to the imaging unit C and the determination unit J and can output the composite image G3 to the determination unit J. It may be installed near.
More specifically, an operation check device is provided on the ceiling behind the image pickup means C when the image pickup means C is installed indoors, or on the support member of the image pickup means C when the image pickup means C is installed outdoors. 1 may be installed.

When installing the operation check device 1, the DIN rail 16 and the DIN mounting plate 17 are not essential, and the housing 11 is installed directly by the mounting holes provided beside the image pickup means C. It doesn't matter.
The timing at which the operation check device 1 is installed may be the same as the time when the monitoring device S (imaging means C) is installed. Alternatively, the operation checking device 1 may be installed later with respect to the already installed monitoring device S. I do not care.

<Input unit 2>
As shown in FIGS. 2 to 4, the input unit 2 inputs an electrical signal of the monitoring image G <b> 1 from the imaging unit C, and is connected to the imaging unit C via the transmission unit D.
The input unit 2 may have any configuration as long as it can input the electrical signal of the monitoring image G1 into the operation check device 1, but for example, a connector (for example, male) of the transmission means D such as a coaxial cable. It may be a connector (for example, a female) that can be retrofitted and can receive the electrical signal of the monitoring image G1.

When the input unit 2 is a connector as described above, the connector of the input unit 2 may be provided in the housing 11 of the operation check device 1 (see FIG. 2).
Further, the input unit 2 may be connected to the image pickup means C from the beginning instead of being retrofitted with a connector. Furthermore, the operation check device 1 itself is connected to the monitoring device S (image pickup means C, determination means). J) may be provided.

The input unit 2 sends (outputs) the electrical signal of the monitoring image G1 from the imaging unit C input via the transmission unit D to the switching unit 5 together with the combining unit 3 in the operation check device 1.
In the following, the electrical signal of the monitoring image G1 output to the combining unit 3 and the switching unit 5 will be described in detail as an analog signal (for example, NTSC system).

<Synthesis unit 3>
As shown in FIGS. 3 and 4, the synthesizer 3 synthesizes (superimposes) the object image G2 with the monitoring image G1 input from the input unit 2 to form a synthesized image G3.
The synthesizing unit 3 performs object synchronization based on a synchronization block 31 that performs synchronization separation of the analog signal of the input monitoring image G1, a signal (an odd / even field signal N1 described later) from the synchronization block 31, and the setting switch 13 described above. An object generation block 32 that generates an image G2 and a synthesis block 33 that combines the object image G2 from the object generation block 32 and the monitoring image G1 are provided.

Note that the analog signal of the inputted monitoring image G1 is also sent (output) to the synthesis block 33 of the synthesis unit 3.
In FIG. 3, the output from the synthesis unit 3 (synthesis block 33) is input to the switching unit 5.

<Synchronization block 31>
As shown in FIGS. 3 and 4, the synchronization block 31 of the synthesis unit 3 separates the vertical synchronization signal N2 and the horizontal synchronization signal N3 from the analog signal of the monitoring image G1 from the input unit 2.
In addition to the separation of these two synchronization signals N2 and N3, the synchronization block 31 is an odd number of all scanning lines (for example, 525 in the case of the NTSC system) from the analog signal of the monitoring image G1. The above-mentioned odd / even field signal N1 indicating whether the scanning line (odd field) or even-numbered scanning line (even field) is also separated.

The synchronization block 31 outputs the odd / even field signal N1 thus separated to the object generation block 32.
Further, the synchronization block 31 outputs the vertical synchronization signal N2 separated from the analog signal of the monitoring image G1 to the above-described state output unit 6 (image break counter 6b described later).

Here, regarding the vertical synchronization signal N2 and the horizontal synchronization signal N3 separated in the synchronization block 31, for example, a case where the analog signal of the monitoring image G1 is in the NTSC system will be described.
One horizontal synchronization signal N3 exists in each analog signal corresponding to one scanning line in the NTSC system, and the potential indicating “black” having the lowest luminance in the analog signal corresponding to one scanning line (Japan) In the NTSC system, the potential of the portion corresponding to the horizontal synchronization signal N3 (horizontal synchronization portion) is lower (the lowest 0V) than about 0.3V (about 0.286V)).
Therefore, the synchronization block 31 performs horizontal synchronization at the portion having the lowest potential in the analog signal corresponding to one scanning line.

On the other hand, one vertical synchronizing signal N2 exists for each analog signal corresponding to all 525 scanning lines in the NTSC system, and the potential thereof is 0 V, which is the lowest, similarly to the horizontal synchronizing signal N3.
The portion corresponding to the lowest potential vertical synchronization signal N2 (vertical synchronization portion) has a time (pulse width) of 0 V that is a multiple (three times) of the horizontal synchronization portion.
Therefore, the synchronization block 31 recognizes the time of the lowest potential, and performs vertical synchronization with the portion having the lowest potential in the analog signal corresponding to one frame (525 scanning lines) at that time. ing.

<Object generation block 32>
As shown in FIGS. 3 and 4, the object generation block 32 of the synthesizing unit 3 generates an object image G2 having a predetermined speed, size, motion pattern, and the like.
The object generation block 32 has several small blocks inside (see FIG. 4), and these small blocks will be described later.

If the object image G2 generated by the object generation block 32 can determine whether or not the object T has entered the monitoring region K based on the composite image G3 combined with the monitoring image G1, Any size, shape, brightness, and color may be used. For example, the following rectangle may be used as the object image G2.
Therefore, first, the case where the object image G2 is a predetermined rectangle is illustrated.

<Object Image G2 (Example 1)>
As shown in FIG. 9A, the object image G2 according to the first embodiment is rectangular (square in FIG. 9A) as described above, and the colors are relatively bright in order from the outside. A rectangular line having a width d1 in the light color portion G2 ′ (for example, white), a rectangular line having a relatively dark color G2 ″ (for example, black) and a width d2, and a light color portion G2 ′ (for example, white) White) and a rectangle having a vertical length d3 and a horizontal length d4.
Therefore, the vertical length d5 of the entire object image (rectangular image) G2 of Example 1 is d5 = (d1 × 2) + (d2 × 2) + d3, and the horizontal length d6 is d6 = (d1 × 2) + (d2 × 2) + d4.

Specific values of the widths d1 and d2 are not particularly limited. For example, both the widths d1 and d2 may be, for example, two pixels (pixels), three pixels (pixels) or more, one pixel (pixels), and the like. .
When the widths d1 and d2 are 2 pixels or more, even if the analog signal of the monitoring image G1 is interlaced (interlaced) scanning by the NTSC method or the like, the odd-numbered scanning is performed. In the case of an odd field that is an analog signal of the monitoring image G1 with only a line and an even field that is an analog signal of the monitoring image G1 with only the even-numbered scanning lines, a rectangular shape is always used for each color in the rectangular image G2. It can be said that this line can be represented on a monitor or the like.
On the other hand, the lengths d3 to d6 are not limited. For example, the specific values of d3 and d4 are changed from 2 pixels (pixel) with the smallest value to 152 pixels (pixel) with the largest value. As will be described later, d5 and d6 may also be values such as the shortest value of 10 [pixel] to the longest value of 160 [pixel].

In addition, the rectangular color of width d1, the rectangular line of width d2, and the rectangular color of vertical d3 and horizontal d4 are the white color with the highest luminance (in the NTSC system, when referring to white and black exemplified above). The analog signal potential is 1.0 V) and the black color with the lowest luminance (in the Japanese NTSC system, the analog signal potential is approximately 0.3 V (approximately 0.286 V)). The determination means J can easily determine the rectangular image G2 regardless of the brightness, color, or the like of the monitoring image G1.
It should be noted that the specific colors of the light color portion G2 ′ and the dark color portion G2 ″ in the rectangular image G2 are not limited to the above examples as long as the determination unit J can determine whether or not the object T has entered the monitoring region K. The white color having the highest luminance or the black color having the lowest luminance may not be used.

The bright color portion G2 ′ in the rectangular image G2 has a color slightly lower in luminance than 100IRE (in the NTSC system, for example, in the NTSC system, for example, in addition to white having the highest brightness (in the NTSC system, 100IRE and corresponding potential of 1.0 V). 80 IRE to 100 IRE, and a corresponding potential of about 0.857 V to 1.0 V).
Note that IRE is an acronym for Institute of Radio Engineers, and means a relative value where the reference potential is 0 IRE and the potential when the luminance of the image signal is 100% is 100 IRE.
On the other hand, the dark color portion G2 ″ also has a color slightly brighter than 0IRE (in Japanese NTSC system, in addition to black having the lowest brightness (in Japanese NTSC system, 0IRE and corresponding potential of about 0.286V)). For example, it may be 0 IRE or more and 20 IRE or less and a corresponding potential of about 0.286 V or more and about 0.429 V or less).

<L ^* value of PCSLAB>
Here, it can be said that the brightness (brightness) and the like of the light color portion G2 ′ and the dark color portion G2 ″ in the rectangular image G2 slightly change depending on a device (interface) such as a monitor that displays the rectangular image G2.
Therefore, FIG. 1 on page 4 of JIS-X-9207: 2012 and FIG. As shown in FIG. 1, in the rectangular image G2, for example, a predetermined luminance (brightness) can be expressed regardless of a device such as a CRT (Cathode Ray Tube) monitor or an LCD (Liquid Crystal Display) monitor. The brightness of the light color portion G2 ′ (rectangular line of width d1 or vertical d3 / horizontal d4 rectangle) is converted into the PCSLAB L ^* value (lightness) in the profile combination space according to JIS-X-9207: 2012. The L ^* value may be 80 or more (80 or more and 100 or less).
Similarly, the luminance of the dark color portion G2 ″ (rectangular line having a width d2) in the rectangular image G2 is also converted into the L ^* value (brightness) of the PCSLAB in the profile combination space according to JIS-X-9207: 2012. The L ^* value may be 20 or less (0 or more and 20 or less).

Here, the “profile connection space (PCS)” used when converting to the L ^* value (lightness) of PCSLAB is 3.1.19 on page 15 of JIS-X-9207: 2012. Is a “color space for combining the input side profile and the output side profile”.
The conversion of PCSLAB into L ^* value (brightness) is defined in the profile combination space of Annex D of JIS-X-9207: 2012.

Note that the brightness of the light color portion G2 ′ and the dark color portion G2 ″ does not necessarily have to be converted to the L ^* value (lightness) of the PCSLAB in the profile combination space according to JIS-X-9207: 2012. The color portion G2 ′ may be defined as 80 IRE or more and 100 IRE or less in the NTSC system, and the dark color portion G2 ″ may be defined as 0 IRE or more and 20 IRE or less in the NTSC format in Japan.
By having such a light color portion G2 ′ and a dark color portion G2 ″ in the rectangular image (object image) G2, the monitor image G1 (that is, the background) from the imaging means C has any lightness and hue. However, either the light color portion G2 ′ or the dark color portion G2 ″ can be identified as the background, and the determination means J is determined to be the object T that has entered the monitoring region K.

<Setting switch 13>
Since the operation pattern of the object image G2 described so far is set in accordance with the operation of the setting switch 13, the setting switch 13 will be described in detail below.
The setting switch 13 includes a speed setting switch 13a, a vertical size setting switch 13b, a horizontal size setting switch 13c, and an operation pattern setting switch 13d.

The speed setting switch 13a may have any configuration as long as the rectangular image G2 can be set to a predetermined moving speed. For example, the speed setting switch 13a may be configured by a 16-stage rotary switch. 11 may be provided so that the moving speed can be changed (see FIG. 2).
The specific value of the moving speed that can be set by the speed setting switch 13a is not particularly limited. For example, the slowest value is 5 [pixel / sec], and the fastest value is 530 [pixel / sec]. (Details are shown in Table 1 below).

The vertical size setting switch 13b may have any configuration as long as the vertical length of the rectangular image G2 can be set to a predetermined value. For example, similar to the speed setting switch 13a, the vertical size setting switch 13b includes a 16-stage rotary switch. It may be provided, and it may be provided in the case 11 of the operation check apparatus 1 so that the vertical length can be changed (see FIG. 2).
The specific value of the vertical length that can be set by the vertical size setting switch 13b is not particularly limited. For example, the shortest value is 10 [pixel], and the longest value is 160 [pixel]. (Details are shown in Table 1 below).

The same applies to the horizontal size setting switch 13c as long as the horizontal length of the rectangular image G2 can be set to a predetermined value. For example, as with the vertical size setting switch 13b, 16 It may be composed of rotary switches in stages, and may be provided in the casing 11 of the operation check device 1 so that the lateral length can be changed (see FIG. 2).
The specific value of the horizontal length that can be set by the horizontal size setting switch 13c is also not particularly limited. For example, as with the vertical size setting switch 13b, the shortest value is 10 [pixel] and the longest value. The value may be 160 [pixel] or the like (details are shown in Table 1 below).

The operation pattern setting switch 13d may have any configuration as long as the rectangular image G2 can be set to a predetermined operation pattern (movement pattern). For example, an 8-bit (8 switches) DIP (Dual In -line Package) switch, and this operation pattern setting switch 13d may also be provided in the casing 11 of the operation check device 1 so that the operation pattern can be changed (see FIG. 2). ).
The operation pattern (movement pattern) that can be set by the operation pattern setting switch 13d is not particularly limited. For example, the left end of the monitoring image G1 is moved along the vertical direction (see “(1)” in FIG. 9B). ") Or the upper part of the monitoring image G1 may be moved along the left-right direction (" A "in FIG. 9B).
Here, when the movement of the rectangular image G2 is the movement from the end (start position) to the end (end position) of the monitoring image G1, the rectangular image G2 moved to the end (end position) of the monitoring image G1. Is temporarily disappeared from the monitoring image G1 (combination with the monitoring image G1 is stopped), and after a predetermined time (for example, 500 msec (0.5 seconds)), it is synthesized again from the opposite end (starting position). (Details are shown in Table 2 below and FIG. 9B).

As indicated by number 8 in Table 2, the operation pattern setting switch 13d may be provided with a switch for setting other than the operation direction. For example, the direction in which the rectangular image G2 moves is set. A switch (orientation setting switch) may be used.
If this switch is turned on, for example, when the switch is turned on, it moves from the left to the right when moving along the left-right direction, and when it moves along the vertical direction, it moves upward. It is good also as moving to the downward direction from (refer FIG.9 (b)).
On the other hand, when the switch is turned off, when moving along the left-right direction, the movement is from right to left, and when moving along the up-down direction. (See FIG. 9B).
An operation pattern signal N6 output from an operation pattern table 34c described later by the ON / OFF operation of the orientation setting switch includes the moving direction of the rectangular image G2.

9B (output image G4), the number of vertical and horizontal pixels in the output image G4 is 480 [pixel] in the vertical direction and 720 [pixel] in the horizontal direction. It may be other than the value.
When the analog signal of the monitoring image G1 is the NTSC system, the number of vertical pixels of the output image G4 is 480 [pixel] even though the scanning line (that is, the number of vertical pixels) is 525. The number of effective scanning lines is 480 (the maximum number of effective scanning lines excluding the upper and lower 20 out of 525 is 485 at the maximum, but for DVD etc., the upper and lower 2.5 lines are cut off and recorded. Is 480).
On the other hand, the horizontal pixel count is 720 [pixel] because the aspect ratio is 3: 2 with respect to the vertical pixel count of 480 [pixel].
Therefore, if the aspect ratio is 4: 3, the number of horizontal pixels is 640 [pixel].

In addition, among the operation pattern setting switches 13d, as a switch for setting other than the operation direction, the rectangular image G2 is painted with either the light color portion G2 ′ or the dark color portion G2 ″ (for example, when the switch is turned on) The monitoring image G1 is set to only one black color with the lowest luminance, and when the switch is turned off, the monitoring image G1 is set to only one white color with the highest luminance). Also good.
Furthermore, as a fill setting switch, the rectangular image G2 is filled with two colors, a light color portion G2 ′ or a dark color portion G2 ″, as shown in FIG. When the switch is turned on, the monitoring image G1 is set to two colors of black having the lowest luminance and white having the highest luminance, and when the switch is turned off, the monitoring image G1 is either one of white having the highest luminance or black having the lowest luminance. It may be a color).

The setting by the operation pattern setting switch 13d acts on the rectangular image G2 at the same time.
Specifically, if the operation pattern setting switch 13d has a direction setting switch, for example, the monitoring screen G1 is operated by operating the switch (direction setting switch) for setting the operation direction and the direction setting switch. Is moved from the top to the bottom ("(1)" downward arrow in FIG. 9B), or the upper part of the monitoring image G1 is moved in the left-right direction ("" in FIG. 9B). A ”arrow pointing to the right) can be set.
If the operation pattern setting switch 13d has a fill setting switch, the direction setting switch and the fill setting switch are operated so that, for example, a rectangular image G2 painted in white is moved up and down on the left end of the monitoring screen G1. It can be set to move along the direction.

<Small blocks 34 to 41 of the object generation block 32>
In accordance with the operation of the setting switches 13a to 13d, the object generation block 32 described above generates a predetermined object image G2 with a smaller block included therein.
Therefore, as shown in FIG. 4 and as described above, the small blocks included in the object generation block 32 will be described.

There are eight small blocks in the object generation block 32, <1> to <8> (small blocks 34 to 41) below.
More specifically, the small blocks 34 to 41 include a <1> setting table small block (hereinafter referred to as a setting table) 34 for setting a value such as a speed from the operation of the setting switches 13a to 13d, and <2> the synchronization described above. Field number counter small block (hereinafter referred to as field number counter) 35 for inputting odd / even field signal N1 from block 31 or a signal from external input 12, and <3> signal from field number counter 35 or setting table 34 Start position small block (hereinafter referred to as start position block) 36, <4> end position small block (hereinafter referred to as end position block) 37 to which signals from the start position block 36 and setting table 34 are input, and <5> Area small block (area block) for inputting signals from the end position block 37 and the start position block 36 8 and <6> a sync counter small block (hereinafter referred to as a sync counter) 39 for inputting the odd / even field signal N1, the vertical sync signal N2, and the horizontal sync signal N3 from the sync block 31, and <7> this sync. A synthesis instruction small block (synthesis instruction block) 40 for inputting signals from the counter 39 and the area block 38, and <8> a signal from the synthesis instruction block 40 and the light color portion G2 ′ and dark color portion G2 ″ of the rectangular image G2. This is a light / dark small block (light / dark block) 41 for inputting the electrical signal.

<Setting table 34>
As shown in FIG. 4, the setting table 34 is a small block for setting the speed, vertical and horizontal lengths, operation patterns, and the like of the generated rectangular image G2 in accordance with the operation of the setting switches 13a to 13d.
The setting table 34 includes therein a speed table 34a for setting the speed in the rectangular image G2, a size table 34b for setting the vertical and horizontal lengths of the rectangular image G2, and the coordinates of the rectangular image G2 and the moving direction from the operation pattern and the like. Has an operation pattern table 34c.

The speed table 34a indicates how fast the rectangular image G2 is moved in the monitoring image G1 by the operation of the speed setting switch 13a (the amount of movement per predetermined time, the unit being [pixel / sec]). Set.
When the analog signal of the monitoring image G1 is the NTSC system, since it is interlaced scanning, the monitoring image G1 using the analog signal in the odd field portion and the monitoring image G1 using the analog signal in the even field portion are combined. There are about 60 fields per second (60 fields for black and white images, 59.94 fields for color images).

Therefore, for example, when the speed of the rectangular image G2 is set to 5 [pixel / sec], the rectangular image G2 is moved by 5 [pixel] in about 60 fields.
Therefore, in the speed table 34a, a moving amount that moves by 1 [pixel] is set every about 12 fields.

When the speed of the rectangular image G2 is set to 530 [pixel / sec], the rectangular image G2 is moved by 530 [pixel] in about 60 fields (60 fields for monochrome images and 59.94 fields for color images). Therefore, in the speed table 34a, about 9 [pixels] (about 8.8333... ≈9 [pixels] for a monochrome image and 8.8421... ≈9 [pixels] for a color image. ) The amount of movement, that is, the speed is set.
The speed table 34a outputs the speed set in this way to the start position block 36 as a speed signal N4.

The size table 34b also sets whether to set the vertical length and horizontal length (unit: [pixel]) in the rectangular image G2 by the operation of the vertical size setting switch 13b and the horizontal size setting switch 13c.
The size table 34b outputs the length and width set in this way to the start position block 36 as the size signal N5.

The operation pattern table 34c is similarly configured by setting the coordinates (drawing position) at which the rectangular image G2 starts moving in the monitoring image G1 and the moving direction by operating the operation pattern setting switch 13d.
The motion pattern table 34c outputs the motion start coordinate and the motion direction thus set to the end position block 37 as the motion pattern signal N6.

<Field counter 35>
As shown in FIG. 4, the field number counter 35 includes an odd / even field signal N1 from the synchronization block 31 and a signal from the external input 12 from the person monitoring the monitoring region K (hereinafter referred to as a composite signal N7). And the number of fields of the monitoring image G1 to be combined with the rectangular image G2 is counted (counted).
Here, the synthesized signal N7 of the external input 12 to the field number counter 35 is an operation check of the monitoring device S that is a confirmation target by a person who performs monitoring of the monitoring area K (such as a security guard or a security company staff). This is a signal for causing (the synthesis of the rectangular image G2 to the monitoring image G1).

Therefore, the field number counter 35 starts counting the number of fields (the number of rising and falling edges of the odd / even field signal N1) for the first time when the composite signal N7 from the external input 12 is input. This is output to the start position block 36 as the field number signal N8.
That is, the field number counter 35 naturally does not count the number of fields and the field number signal N8 is not output to the start position block 36 unless the composite signal N7 from the external input 12 is input.

<Start position block 36>
As shown in FIG. 4, the start position block 36 receives the speed signal N4 and the motion pattern signal N6 from the setting table 34 (speed table 34a and motion pattern table 34c) together with the field number signal N8 from the field number counter 35. This is a small block that is inputted and calculates the start position of the rectangular image G2 in the monitoring image G1.
Note that the start position calculated by the start position block 36 is the start position (hereinafter referred to as the drawing position of the rectangular image G2 in the field after the field number counter 35 starts counting by the composite signal N7 and a predetermined number of fields are counted. , The start position in the field after a predetermined count).

In other words, the start position in the field after a predetermined count is the start position = the coordinate at which the field starts counting in the initial count + the speed along the moving direction (the amount of movement per field along the moving direction [pixel]) × counting. The number of fields can be calculated.
Of the values used in this calculation, the coordinates at which movement starts in the field at the beginning of counting are determined by the motion pattern signal N6 from the setting table 34 (motion pattern table 34c), and the speed along the direction of motion is The number of fields determined by the speed signal N4 and the operation pattern signal N6 from the setting table 34 (speed table 34a and operation pattern table 34c) is determined by the field number signal N8 from the field number counter 35.

Also, the start position block 36 starts the start in the field after a predetermined count for the first time when the field number signal N8 from the field number counter 35 is input (that is, when the composite signal N7 is input from the external input 12). The position is calculated, and the calculated start position is output to the end position block 37 and the area block 38 as the start position signal N9.
That is, the start position block 36 does not calculate the start position unless the field number signal N8 from the field number counter 35 is input among the input signals, and the start position signal N9 is not the end position block 37 or the area block. 38 is configured so as not to be output.
With this configuration, the start position block 36 is controlled by the composite signal N7 from the external input 12 to calculate the start position.

<End position block 37>
As shown in FIG. 4, the end position block 37 inputs the size signal N5 from the setting table 34 (size table 34b) together with the start position signal N9 from the start position block 36, and the rectangular image in the monitoring image G1. This is a small block for calculating the end position of G2.
The end position calculated by the end position block 37 is the same as in the start position block 36 in the field after the field number counter 35 starts counting by the composite signal N7 and a predetermined number of fields are counted. This is the end position for drawing the rectangular image G2 (hereinafter, the end position in the field after a predetermined count).

That is, the end position in the field after the predetermined count has two types of the vertical direction (vertical direction) and the horizontal direction (left and right direction) of the rectangular image G2. First, the end position in the field after the predetermined count in the vertical direction is The end position = the start position in the field after a predetermined count + the vertical length [pixel] of the rectangular image G2.
Further, the end position in the field after the predetermined count in the horizontal direction is calculated as the end position = the start position in the field after the predetermined count + the horizontal length [pixel] of the rectangular image G2.
Of the values used in this calculation, the vertical and horizontal lengths of the rectangular image G2 are determined by the size signal N5 from the setting table 34 (size table 34b).

In addition, the end position block 37 is terminated for the first time after a predetermined count when the start position signal N9 from the start position block 36 is input (that is, when the composite signal N7 is input from the external input 12). The position is calculated, and the calculated end position is output to the area block 38 as the end position signal N10.
That is, the end position block 37 also does not calculate the end position and does not output the end position signal N10 to the area block 38 unless the start position signal N9 from the start position block 36 is input. It is configured.
With this configuration, the end position block 37 is also controlled by the composite signal N7 from the external input 12 to calculate the end position as in the start position block 36.

<Region block 38>
As shown in FIG. 4, the area block 38 receives the start position signal N9 from the start position block 36 together with the end position signal N10 from the end position block 37, and starts the rectangular image G2 in the monitoring image G1. This is a small block for calculating an area from to the end position.
The area from the start position to the end position calculated by the area block 38 is the same as the start position block 36 and the end position block 37, and the field number counter 35 starts counting by the composite signal N7, The color and its position in the region between the start position and the end position for drawing the rectangular image G2 in the field after the number of fields are counted (from which pixel the coordinates (drawing position) of the bright color portion G2 ' From which pixel, the coordinates (drawing position) of the dark color portion G2 ″ are from which pixel to which pixel, and hereinafter, the color position of the area in the field after a predetermined count).

That is, the color position of the area in the field after the predetermined count is, for example, the first scanning line at the top of the predetermined number of scanning lines between the start position and the end position of the rectangular image G2 has the width d1. Are formed in the light color portion G2 ′.
Next, referring to the second scanning line from the top, if the analog signal of the monitoring image G1 is NTSC (that is, interlaced scanning) and the above-described width d1 is two pixels, In the second scanning line, two pixels (pixels) at both ends thereof become a light color portion G2 ′, and between these light color portions G2 ′, all become a dark color portion G2 ″.
In the following, similarly, each scanning line between the start position and the end position is obtained by converting a rectangular image G2 set by the setting switch 13 (size setting switches 13b and 13c) into a light color portion G2 ′ and a dark color portion G2. As you can see, the color and its position are determined.

Also in the area block 38, when the start position signal N9 from the start position block 36 and the end position signal N10 from the end position block 37 are input (that is, when the composite signal N7 is input from the external input 12). For the first time, the color position of the area in the field after the predetermined count is determined, and the determined color position of the area is output to the synthesis instruction block 40 as the area signal N11.
That is, the area block 38 does not determine the color position of the area unless the start position signal N9 from the start position block 36 and the end position signal N10 from the end position block 37 are input. Is configured not to be output.
With this configuration, the area block 38 is also controlled as to whether or not to determine the color position of the area by the composite signal N7 from the external input 12, as in the start position block 36 and the like.

<Synchronous counter 39>
As shown in FIG. 4, the synchronization counter 39 inputs the vertical synchronization signal N2 and the horizontal synchronization signal N3 together with the odd / even field signal N1 from the synchronization block 31, and synthesizes the rectangular image G2 as the name implies. The number of vertical synchronization (number of fields) and the number of horizontal synchronization (number of scanning lines) of the monitoring image G1 to be counted is counted (counted), and at the same time, data of odd or even fields, timing of vertical / horizontal synchronization, etc. This is a small block that also outputs the data.
The synchronization counter 39 internally counts the number of fields of the monitoring image G1 and outputs a vertical synchronization counter 39a that outputs either the odd / even field and the vertical synchronization timing, and the scanning lines in the predetermined field of the monitoring image G1. It has a horizontal synchronization counter 39b that counts the number and outputs the timing of horizontal synchronization.

Note that, unlike the field number counter 35 and the like, the synchronization counter 39 does not count whether the composite signal N7 from the external input 12 is input, the vertical synchronization counter 39a counts the number of counted fields, whether it is an odd field or an even field. The vertical synchronization timing is output to the synthesis instruction block 40 as the vertical data signal N12.
The horizontal synchronization counter 39b also outputs the number of scanning lines counted in a predetermined field and the horizontal synchronization timing to the synthesis instruction block 40 as the horizontal data signal N13 regardless of the input of the synthesis signal N7.

<Composition instruction block 40>
As shown in FIG. 4, the synthesis instruction block 40 receives the area signal N11 from the area block 38 together with the vertical data signal N12 and the horizontal data signal N13 from the synchronization counter 39 (vertical synchronization counter 39a, horizontal synchronization counter 39b). This is a small block that is input to instruct where the rectangular image G2 is to be combined in the monitoring image G1.
More specifically, the synthesis instruction block 40 determines whether the analog signal (hereinafter, real-time analog signal) of the monitoring image G1 input to the synthesis block 33 in real time is an odd field, an even field, or what number field. In addition to reading from the vertical data signal N12, the scanning line number in a predetermined field is read from the horizontal data signal N13.

In addition, the compositing instruction block 40 outputs the portion of the analog signal corresponding to the predetermined pixel from the predetermined pixel at the coordinates (drawing position) of the light color portion G2 ′ of the rectangular image G2 in the real-time analog signal at any timing. It is read from the vertical data signal N12, the horizontal data signal N13, and the region signal N11 whether to replace (combine) with an electric signal (light color signal N16 described later) corresponding to G2 ′.
At the same time, the compositing instruction block 40 outputs an electrical signal (described later) corresponding to the dark color portion G2 ″ at any timing from the portion of the analog signal corresponding to the predetermined pixel from the predetermined pixel of the dark color portion G2 ″ (drawing position). Whether to replace (synthesize) the dark color signal N17) is read from the vertical data signal N12, the horizontal data signal N13, and the region signal N11.

The replacement timing can be read because the vertical data signal N12 and the horizontal data signal N13 include the timing of vertical synchronization and horizontal synchronization.
The synthesizing instruction block 40 outputs the read replacement timing to the synthesizing block 33 as a synthesizing instruction signal N14, and determines whether the light color portion G2 ′ or the dark color portion G2 ″ is replaced as a light / dark instruction signal N15. Output to the light / dark block 41.

The synthesis instruction block 40 receives the above-described synthesis instruction signal N14 and the like for the first time when the area signal N11 from the area block 38 is input (that is, when the synthesis signal N7 is input from the external input 12). Output to the synthesis block 33 or the like.
That is, the composition instruction block 40 is also configured not to instruct the composition of the rectangular image G2 and to output the composition instruction signal N14 and the like unless the region signal N11 from the region block 38 is input.

With this configuration, the synthesis instruction block 40 is also controlled to instruct the synthesis of the rectangular image G2 by the synthesis signal N7 from the external input 12 as in the start position block 36 and the like.
It should be noted that the light / dark instruction signal N15 is not necessarily required to be output to the light / dark block 41 when the region signal N11 from the region block 38 is input (that is, when the composite signal N7 is input from the external input 12). Even if the area signal N11 from the area block 38 is not inputted, even if the light / dark instruction signal N15 is output, the synthesis instruction block 40 is also received by the synthesized signal N7 from the external input 12. Whether to instruct the synthesis of the rectangular image G2 is controlled.

<Light / dark block 41>
As shown in FIG. 4, the light / dark block 41 receives the light / dark instruction signal N15 from the composition instruction block 40, and synthesizes an electrical signal corresponding to the light color portion G2 ′ or dark color portion G2 ″ of the rectangular image G2. This is a small block to be output to the block 33.
In the light / dark block 41, in addition to the light / dark instruction signal N15, an electric signal (hereinafter referred to as the light color signal N16, which has a potential corresponding to the light color portion G2 ′, for example, white having the highest luminance, An electric signal (hereinafter referred to as a dark color signal N17 having a potential of 1.0 V) and a potential corresponding to the dark color portion G2 ″, for example, a black color having the lowest luminance, the potential is about 0.3 V (0 .286V)) is also input.
Note that the color (luminance (brightness) and hue) of the rectangular image G2 to be combined with the monitoring image G1 is changed by changing the potential of the light color signal N16 or the dark color signal N17 input to the light / dark block 41.

The light / dark block 41 reads from the light / dark instruction signal N15 which of the light color signal N16 and the dark color signal N17 is to be output to the synthesis block 33.
In addition, the light / dark block 41 is not the same as the light color signal N16 when the light / dark instruction signal N15 is input (that is, when the composite signal N7 is input from the external input 12) as in the start position block 36 or the like. Although the dark color signal N17 may be output to the synthesis block 33, either the light color signal N16 or the dark color signal N17 is output from the light / dark block 41 regardless of whether the light / dark instruction signal N15 is input. It may be configured.

<Synthetic block 33 / switching unit 5>
As shown in FIGS. 3 and 4, the synthesizing block 33 receives the synthesizing instruction signal N14 from the synthesizing instruction block 40, the bright color signal N16 and the dark color signal N17 from the light / dark block 41, and is inputted in real time. This is a block for combining (superimposing) the rectangular image G2 with the monitoring image G1.
The synthesis block 33 replaces the real-time analog signal of the monitoring image G1 input to the synthesis block 33 in real time with any one of the bright color signal N16 and the dark color signal N17 at any timing. Whether or not the predetermined rectangular image G2 can be synthesized is read from the synthesis instruction signal N14.

According to the read timing, the synthesis block 33 switches whether to output the real-time analog signal of the monitoring image G1 as it is or to output the light color signal N16 or the dark color signal N17 input from the light / dark block 41, A composite image G3 obtained by combining the rectangular image G2 with predetermined coordinates (drawing position) in the monitoring image G1 can be output.
The synthesis block 33 also outputs the synthesized image G3 as an analog signal for the first time when the synthesis instruction signal N14 or the like from the synthesis instruction block 40 is input (that is, when the synthesis signal N7 is input from the external input 12). Output to 4.

However, when the synthesis instruction signal N14 or the like from the synthesis instruction block 40 is not input, the synthesis block 33 does not output anything like the start position block 36 or the like, but outputs the analog signal of the monitoring image G1 as it is in real time. Configured to continue.
By configuring in this way, the synthesis block 33 is controlled whether or not to output the synthesized image G3 with the synthesized signal N7 from the external input 12, as in the start position block 36, and at the same time outputs it. The output image G4 is switched to either the composite image G3 or the monitoring image G1 as it is.
Therefore, it can be said that the synthesis block 33 also serves as the switching unit 5.

<Output unit 4>
As shown in FIGS. 3 and 4, the output unit 4 outputs an electrical signal of either the synthesized image G3 synthesized by the synthesizing unit 3 or the output image G4 of the monitoring image G1 as it is to the judging means J. The determination means J is connected via the transmission means D.
The output unit 4 may have any configuration as long as it can output the electrical signal of the output image G4 from the operation check device 1. For example, the output unit 4 is similar to the input unit 2 and is similar to the transmission unit D such as a coaxial cable. It may be a connector (for example, a female) that can be retrofitted to a connector (for example, male) and output the electrical signal of the output image G4.

When the output unit 4 is a connector as described above, the connector of the output unit 4 may be provided in the casing 11 of the operation check device 1 (see FIG. 2).
Also, the output unit 4 may be connected to the judging means J from the beginning, instead of being retrofitted with a connector.

<Status output unit (external output) 6>
As shown in FIGS. 3 and 4, the state output unit 6 determines whether or not the monitoring image G1 from the imaging unit C is interrupted for a predetermined time (for example, about 1 second) (hereinafter, the image disconnection state α). This is output to the outside of the operation check device 1.
Therefore, it can be said that the state output unit 6 is the external output 6, and when the external output 6 is ON, the image disconnection state α.

The external output 6 may have any configuration as long as it can output to the outside whether or not the image disconnection state α is, for example, an a contact that closes the contact only when the image disconnection state α, and an image disconnection You may provide both the b contact which opens a contact only in the state (alpha).
The contact a is a state in which the external output 6 is turned on when the contact is closed, and the contact b is a state in which the external output 6 is turned on when the contact is opened.

Further, when the input of the monitoring image G1 is restored from the image disconnection state α, the external output 6 is turned off at a predetermined time (for example, after one second) from that timing.
Furthermore, the external output 6 is also turned OFF when the power input (power supply) from the power input 14 is stopped (hereinafter referred to as the power-off state β).
Table 3 below collectively shows ON / OFF of the external output (status output unit) 6 and the opening / closing of the a contact / b contact described above.

The external output 6 may be provided in the casing 11 of the operation check apparatus 1 so that transmission means such as a cable is connected to the a contact and the b contact so that ON / OFF can be transmitted to each contact.
In addition, since the thing provided with both a contact and b contact is called c contact, the external output 6 is c contact.

Here, the external output 6 may be turned ON / OFF from the object generation block 32 of the synthesis unit 3 via an external output I / F (external output interface) 6a (see FIG. 3).
The external output 6 may include an image disconnection counter 6b that receives the vertical synchronization signal N2 from the synchronization block 31 in the synthesis unit 3 and counts the time when the monitoring image G1 is interrupted (see FIG. 4).

In the vertical synchronizing signal N2 input to the image break counter 6b, if the vertical synchronizing portion at the lowest potential is, for example, the NTSC system, about 60 per second (60 for a monochrome image, 59.94 for a color image). Is included in the ratio.
Therefore, if the monitoring image G1 is interrupted, for example, after about 1 / 60th of a second, it can be seen that there is no next vertical synchronization portion that should be originally, and the image disconnection counter 6b can read that the monitoring image G1 has been interrupted. .

After reading the interruption of the monitoring image G1, the image interruption counter 6b counts the time when the monitoring image G1 is interrupted by a separate timer or the like, and when the predetermined time (for example, 1 second) is exceeded, the external output 6 Is turned on.
As described above, the external output 6 includes both the a contact that closes the contact in the image disconnection state α and the b contact that opens the contact in the image disconnection state α, so that the operation check device 1 can be replaced with the existing monitoring device S. When retrofitted, the number of types of equipment that can be used is increased and versatility is improved as compared with the case of only a contact or b contact.

<External input 12>
As shown in FIGS. 3 and 4, the external input 12 allows the person who monitors the monitoring region K to check the operation of the monitoring device S to be confirmed (that is, synthesize the rectangular image G2 to the monitoring image G1). Whether or not is input to the operation check apparatus 1 from the outside.
When the external input 12 is ON, the operation is being checked (combined), and the above-described combined signal N7 is being input to the operation check device 1.

The external input 12 may have any configuration as long as it can be input from the outside as to whether or not to synthesize. For example, the external input 12 may be an a-contact that closes the contact only when ON.
Note that, as described above, when the contact a is opened, the external input 12 is turned on and the composite signal N7 is input, and the operation check device 1 displays the composite image G3 in which the rectangular image G2 is combined with the monitoring image G1. And output as an output image G4.

If the external input 12 is OFF and the composite signal N7 is not input, the operation check device 1 outputs a normal monitoring image G1 as the output image G4.
The external input 12 may also be provided in the casing 11 of the operation check apparatus 1 so that transmission means such as a cable is connected to the contact a so that ON / OFF can be transmitted.
Here, the external input 12 may turn on / off the object generation block 32 of the synthesis unit 3 via an external input I / F (external input interface) 12a (see FIG. 3).

<Power input 14>
As shown in FIG. 3, the power input 14 is for the operation check device 1 to synthesize the rectangular image G2 with the monitoring image G1 or switch to either the synthesized image G3 or the monitoring image G1 synthesized as the output image G4. The power supply is input.
The power input 14 may have any configuration as long as it can be combined and switched. For example, the power input 14 may include a power conversion unit 14a that converts the input power.

The power converter 14a may be configured to convert the power from the power input 14 into an analog power source and a digital power source, or only one of the analog power source and the digital power source.
Further, the potential supplied to the power supply input 14 may be any value as long as it can be combined and switched, but may be, for example, DC (direct current) and not less than 12V and not more than 24V. .
Further, the power input 14 may be provided so that power can be supplied by connecting a transmission means such as a cable to the casing 11 of the operation check apparatus 1.

<LED15>
As shown in FIGS. 2 and 3, the LED 15 indicates the state of the operation check device 1 to the outside by lighting up.
The LED 15 may have any configuration as long as the state can be indicated to the outside. For example, the LED 15 may be configured by three-color LEDs 15a to 15c.

The colors of the LEDs 15a to 15c may be any color as long as the three colors can be distinguished. For example, the red LED 15a, the green LED 15b, and the orange LED 15c may be used.
In the case of these three colors, there is no particular limitation as to what state each color indicates. For example, lighting of the red LED 15a is in a state in which power is input from the power input 14 (energized state). It is good also as showing.

Similarly, the lighting of the green LED 15b may indicate that the external input 12 is ON, and the lighting of the orange LED 15c may indicate that the image is in the off state α.
Further, the LEDs 15 (each LED 15a to 15v) may be provided on the casing 11 of the operation check device 1 so that it can be checked whether or not the LED 15 is turned on.

<Usage aspect of the operation check apparatus 1>
The usage mode of the operation check device 1 according to the present invention will be described with reference to the time chart of FIG. 5 and the block diagram of FIG.
First, in the operation check device 1, the external input 12 is turned ON, and the composite signal N7 rises from a low potential (L potential) to a high potential (H potential).

When the composite signal N7 rises, the synchronization counter 39 starts reading the vertical synchronization signal N2 and the horizontal synchronization signal N3.
Here, the pulse widths of the L potential indicating the synchronization portion in the “N3” signal in FIG. 5 are all the same, but in the analog signal of the actual monitoring image G1, the vertical synchronization portion in the vertical synchronization signal N2 is horizontal. Since there is a pulse width of L potential that is a multiple of the horizontal synchronization portion in the synchronization signal N3, the synchronization block 31 can separate the analog signal of the input monitoring image G1 from the vertical synchronization signal N2 and the horizontal synchronization signal N3. The vertical synchronization signal N2 is output to the vertical synchronization counter 39a, and the horizontal synchronization signal N3 is output to the horizontal synchronization counter 39b.

In FIG. 5, the horizontal synchronization signal N3 is displayed, and the vertical synchronization signal N2 is omitted.
In the “N3” signal in FIG. 5, after the first synchronization pulse rises from the L potential to the H potential in the synchronization portion (synchronization pulse) that is continuously input, the field is an odd field or an even number. The field is read, and the odd / even field signal N1 is output to the synchronization counter 39 (vertical synchronization counter 39a) and the field number counter 35 (see FIG. 4).

The “N1” signal in FIG. 5 exemplifies the case where the read field is an odd field and is set to the H potential (in other words, the L field if the field is even). On the contrary, the L potential may be set for the odd field, and the H potential may be set for the even field.
When the composite signal N7 rises, the setting in the setting table 34 (speed table 34a, size table 34b, operation pattern table 34c), count in the field number counter 35, start position block 36, end position block 37 The calculation in the area block 38 and the count in the synchronization counter 39 are started (the rising of the composite signal N7 is a trigger for each).
When each trigger is applied, the setting table 34 outputs the speed signal N4, the size signal N5, and the operation pattern signal N6, the field number counter 35 outputs the field number signal N8, and the start position block 36 starts the start position signal N9. The end position block 37 outputs the end position signal N10, the area block 38 outputs the area signal N11, and the synchronization counter 39 outputs the vertical data signal N12 and the horizontal data signal N13.

Among these signals, the signals N4, N5, N9, and N10 are signals representing specific values.
The signal N11 indicates how many to what number of scanning lines in the field the rectangular image G2 is to be combined. For example, as in the fifth scanning line from the first scanning line. expressed.
The signal N13 indicates the scanning line number of the real-time analog signal of the monitoring image G1 in the field.

In the “N13” signal in FIG. 5, the first signal is represented by, for example, 0, with the horizontal synchronization counter 39b being reset, and the second and subsequent signals are values counted by the horizontal synchronization counter 39b (for example, , 1, 2, 3, 4, 5, 6.
The state in which the horizontal synchronization counter 39b is reset may be represented by a numerical value other than 0 in the horizontal data signal N13, and the reset state may not be represented in the horizontal data signal N13 in the first place.
In FIG. 5, the horizontal data signal N13 is displayed and the vertical data signal N12 is omitted.
Here, the values counted by the horizontal synchronization counter 39b are 1, 2, 3,..., But since the field is an odd field in the interlaced scanning, in the actual scanning line of the monitoring image G1, This means the first, third, fifth,... Scanning lines from the top.

The “flag in 40” in FIG. 5 rises from the L potential to the H potential only when a predetermined condition is satisfied in the synthesis instruction block 40.
Here, the predetermined requirement is that an upper limit value and a lower limit value of a range in which the rectangular image G2 based on the region signal N11 from the region block 38 is combined (for example, if the first scanning line is the fifth scanning line, The first and fifth values mean that the values counted by the horizontal synchronization counter 39b match.

When the flag in the synthesis instruction block 40 rises for the first time, the synthesis instruction signal N14 from the synthesis instruction block 40 to the synthesis block 33 rises from the L potential to the H potential, and the synthesis instruction signal N14 is at the H potential. In the synthesis block 33, the bright color signal N16 or the dark color signal N17 is synthesized with the real-time analog signal of the monitoring image G1.
When the flag in the synthesis instruction block 40 rises for the second time, the synthesis instruction signal N14 falls from the H potential to the L potential, and the real time analog signal of the monitoring image G1 remains unchanged in the synthesis block 33. The output image G4 is output as an analog signal.
Therefore, the rise of the flag in the synthesis instruction block 40 is a trigger for rising and falling of the synthesis instruction signal N14.

The rise of the flag in the synthesis instruction block 40 is a trigger for switching whether the light / dark block 41 outputs the light color signal N16 or the dark color signal N17 for the light / dark instruction signal N15. .
In other words, in the field, according to the color position in the region of the rectangular image G2 calculated by the region block 38 between the first rising edge and the second rising edge in the flag in the compositing instruction block 40, which scanning line is bright. The color portion G2 ′ is combined and the scanning line is combined with the dark color portion G2 ″ by the H potential and L potential of the light / dark instruction signal N15.

The “N15” signal in FIG. 5 is an L potential when synthesizing the bright color portion G2 ′ (in other words, an H potential if the dark color portion G2 ″). This indicates that the light color portion G2 ′ is combined with the third and fifth scanning lines, and the dark color portion G2 ″ is combined with the second and fourth scanning lines from the top. On the contrary, if the light color portion G2 ′, the H potential may be set, and if the dark color portion G2 ″, the L potential may be set, and the first, third, and fifth scanning lines are set as the dark color portion G2 ″ and the second and fourth scans. The line may be the bright color portion G2 ′.
4 and 5, the signal group and the block group indicated as <1> are referred to as “move counter”, and the “N13” signal and the synchronization counter 39 indicated as <2> in FIGS. A signal group and a block indicated as <3> in FIGS.

<Object Image G2 (Example 2)>
As shown in FIG. 10A, the shape / color arrangement of the object image G2 is not limited to the object image (rectangular image) G2 of the first embodiment described above.
The object image G2 according to the second embodiment is circular, and in order from the outside thereof, a light color portion G2 ′ (for example, white) and a circular line having a width d1, a dark color portion G2 ″ (for example, black) and a width. A circular line of d2, a bright color part G2 ′ (for example, white), and a circle of diameter d7 are provided.

Therefore, the diameter d8 of the entire object image (circular image) G2 of Example 2 is d8 = (d1 × 2) + (d2 × 2) + d7.
The specific values of the widths d1 and d2 are not particularly limited as in the first embodiment. For example, both the widths d1 and d2 are, for example, two pixels (pixels), three pixels (pixels) or more, and one pixel ( pixel) or the like.
On the other hand, the diameters d7 and d8 are not limited, and the specific value may be, for example, a value of d7 from 2 pixels (pixel) with the smallest value to 152 pixels (pixel) with the largest value. , D8 may be a value such as 10 [pixel] at the shortest value and 160 [pixel] at the longest value.

The circular line having the width d1, the circular line having the width d2, and the circular color having the diameter d7 are the same as those in the first embodiment, and the specific colors of the light color portion G2 ′ and the dark color portion G2 ″ are determined by the determining unit. As long as J can determine whether or not the object T has entered the monitoring area K, the white color with the highest luminance or the black color with the lowest luminance is not necessarily required.
The brightness of the bright color portion G2 ′ (circular line having a width d1 or a circle having a diameter d7) in the circular image G2 is the same as that in the first embodiment. ^In terms of the value (brightness), the L ^* value may be 80 or more (80 or more and 100 or less), and the luminance of the dark portion G2 ″ (circular line of width d2) is also the first embodiment. similar to, in terms of PCSLAB L ^* value (lightness), the L ^* value may be 20 or less (0 to 20).

Although the shape is different from that of the first embodiment, even the circular image G2 of the second embodiment has the light color portion G2 ′ and the dark color portion G2 ″, so that the monitoring image G1 (background) has any lightness and hue. However, either the light color portion G2 ′ or the dark color portion G2 ″ can be identified as the background, and the determination means J can determine that the object T has entered the monitoring region K.
Other configurations, operational effects, and usage modes of the object image G2 are the same as those in the first embodiment.

<Object Image G2 (Example 3)>
As shown in FIG. 10B, the shape / color arrangement of the object image G2 is not limited to a rectangle or a circle as in the first and second embodiments, but as in the object image G2 according to the third embodiment. It may be humanoid.
The object image (human-type image) G2 of the third embodiment also has a light-colored portion G2 ′ (for example, white) and a human-shaped line having a width d1 and a dark-colored portion G2 ″ (for example, black) in order from the outside. A human-shaped line having a width d2 and a human shape having a bright color portion G2 ′ (for example, white) are provided.

The vertical length and horizontal length of the head, torso, and legs in the humanoid image G2 may be any value. For example, a humanoid line having a width d1 and a humanoid having a width d2 The entire length of the human figure image G2 including the line and the most central human figure is d9 in the vertical length of the head, d10 in the vertical length of the torso, and d11 in the vertical length of the leg. The horizontal length is d12, and the horizontal length of each foot is d13.
The specific values of the widths d1 and d2 are not particularly limited as in the first and second embodiments. For example, both the widths d1 and d2 are, for example, two pixels (pixels), three pixels (pixels) or more, 1 It may be a pixel or the like.
On the other hand, the lengths d9 to d13 are not limited.

The humanoid line having the width d1, the humanoid line having the width d2, and the color of the central human figure are the same as those in the first and second embodiments, and the colors of the light color portion G2 ′ and the dark color portion G2 ″ are Any color may be used as long as the determination means J can determine whether or not the object T has entered the monitoring area K.
The brightness of the bright color portion G2 ′ (the humanoid line having the width d1 or the most central humanoid) or the dark color portion G2 ″ (the humanoid line having the width d2) in the humanoid image G2 is as described in Example 1. 2 is converted into the PCSLAB L ^* value (lightness) in the profile combined space according to JIS-X-9207: 2012, the L ^* value is 80 or more (80 or more and 100 or less), or the L ^* value is It may be 20 or less (0 or more and 20 or less).

Although the shape is different from those of the first and second embodiments, the human image G2 of the third embodiment also has the light color G2 ′ and the dark color G2 ″ so that the monitoring image G1 has any lightness and hue. And the determination means J can determine that the object T has entered the monitoring area K.
Other configurations, operational effects, and usage modes of the object image G2 are the same as those in the first and second embodiments.

<Imaging means (infrared camera) C>
As shown in FIG. 11, the imaging unit C can synthesize the object image G2 with the output monitoring image G1, and the determination unit J makes a determination based on the combined image G3. As long as the operation can be confirmed, the video camera is not limited.
As another example of the imaging means C, there is an infrared camera C as described above.

As described above, the infrared camera C is an infrared passive sensor, and infrared rays (far infrared rays (wavelength 4 μm to 1000 μm), particularly thermal infrared rays (wavelength 8 μm to 15 μm)) emitted from the object T are used as a heat distribution. This image is represented as an image (thermal image), and the represented thermal image is referred to as a monitoring image G1.
The infrared camera C is different from the video camera in that the material of the optical part that collects and separates light is not glass or transparent resin, but germanium (Ge), silicon (Si), or the like. However, it is not a CCD or a CMOS, but a thermal sensor, a quantum sensor, or the like.

The infrared camera C may have a function of automatically releasing a shutter inside the camera periodically to correct the temperature.
In addition, the infrared camera C may have any structure such as a cooling type or a non-cooling type as long as it can determine the intrusion of the object T into the monitoring region K from the captured monitoring image G1.

The monitoring image G1 captured by the infrared camera C may be a black and white image representing the level of heat in terms of luminance (that is, change from black to white) (see FIG. 11A).
Further, the monitoring image G1 by the infrared camera C may be any color image in which the heat level (luminance) is represented by a color change from (black →) blue → green → yellow → red (→ white). .

As described above, regardless of whether the monitoring image G1 by the infrared camera C is a black and white image or a color image, the object T such as an intruder appears white in the captured monitoring image G1.
Therefore, in the operation check device 1 of the present invention, if the object image G2 is an image having the bright color portion G2 ′, the object image G2 used in the video camera C is used even if the imaging means C is the infrared camera C. The same can be used.
The configuration, operation effects, and usage of the infrared camera that is the other imaging means C are the same as those of the video camera.

<Others>
The present invention is not limited to the embodiment described above. Each configuration of the operation check device 1 and the monitoring device S or the overall structure, shape, dimensions, and the like can be appropriately changed in accordance with the spirit of the present invention.
The imaging unit C may be any image camera with any configuration as long as it can determine the intrusion of the object T into the monitoring region K by the captured monitoring image G1, but for example, irradiates irradiated infrared rays (near infrared rays). It is also possible to use an active night vision device that images the reflected light, or a passive night vision device that generates an image of fine visible light with a highly sensitive imaging unit.

The monitoring device S may be provided with a plurality of imaging means C.
In this case, a plurality of the imaging means C may be provided in one monitoring area K (for example, in the same room or hallway if indoors, or in the same monitoring place if outdoor). Alternatively, one imaging unit C may be provided for each of the plurality of monitoring regions K, and the plurality of imaging units C that capture the respective monitoring regions K may be collectively determined by one determination unit J.
Further, when a plurality of image pickup means C are provided, the operation check device 1 may be provided between each image pickup means C and the determination means J one by one.

Further, when a plurality of image pickup means C are provided, each image pickup means C is connected to the determination means J via a switcher that selects which image pickup means C is to receive the monitoring image G1. May be.
At that time, the operation check device 1 is connected between each imaging means C and the switcher.

The monitoring device S may include a recording unit in addition to the imaging unit C and the determination unit J. The recording unit is connected to the determination unit J (that is, the imaging unit C, the operation check device 1, the determination unit J). Connected in the order of the recording means), or connected to the operation checking device 1 (that is, from the operation checking device 1 connected to the image pickup means C, branched to the judging means J and the recording means). As long as any image such as the monitoring image G1 or the composite image G3 can be recorded, the recording means may be connected in any order.
In addition, the monitoring device S is covered with an illumination unit that illuminates the monitoring region K, an illuminance measurement unit (illuminance sensor) that measures the illuminance in the monitoring region K, an optical unit lens in the imaging unit C, or the like. You may have a disturbance detection means etc. which detect disturbance acts, such as shifting a direction or a position.

In the operation check device 1 described above, the electrical signal of the input monitoring image G1 is an analog signal. However, the electrical signal of the input monitoring image G1 may be a digital signal. In this case, in FIG. The synchronization block 31 is excluded from the synthesis unit 3 in the block diagram.
Moreover, the operation check apparatus 1 may have an A / D conversion unit. In this case, the A / D conversion unit is provided in front of the synthesis unit 3 (a digital signal obtained by A / D converting the analog signal of the monitoring image G1 is synthesized (digital processing) by the synthesis unit 3), or a synthesis unit 3 may be provided (the monitoring image G1 may be synthesized by the synthesis unit 3 (analog processing) as an analog signal and then A / D converted).
Further, a part of the synthesis unit 3 (several small blocks in the object generation block 32 (for example, the setting table 34, the start position block 36, the end position block 37, the area block 38, the synthesis instruction block 40, etc.) is digitally processed. Others may be analog processing, and each power supply may be input from the power conversion unit 14a of the power input 14.
The operation check device 1 outputs the synthesized image G3 as an analog signal if the electrical signal of the monitoring image G1 is an analog signal. If the electrical signal of the monitoring image G1 is a digital signal, the synthesized image G3 is also a digital signal. Can be confirmed as an operation check (operation check) of the monitoring apparatus S without changing the determination means J, simply by retrofitting between the imaging means C and the determination means J in the existing monitoring apparatus S. Therefore, the operation check device 1 can be easily attached and the cost can be reduced.

The status output unit (external output) 6 is the c contact, but if the image disconnection state α or the like can be output to the outside of the operation check device 1, any one such as only the a contact or only the b contact is possible. It may be a configuration.
The external input 12 is a contact point, but any configuration such as a b contact point may be used as long as it can be externally input to the operation check device 1 as to whether or not to synthesize.

Of the setting switches 13, the speed setting switch 13a, the vertical size setting switch 13b, and the horizontal size setting switch 13c have been described above as being configured with 16-stage rotary switches, but are configured with continuously variable switching switches. Also good.
On the other hand, among the setting switches 13, the remaining operation pattern setting switch 13d may be other than 8 bits (for example, 6 bits, 4 bits, 2 bits, etc.) in the DIP switch exemplified above, and settings other than the operation direction may be set. There may be no switch (direction setting switch or fill setting switch) to be performed.

Further, the operation pattern of the object image G2 set by the operation pattern setting switch 13d is not limited to the movement along the vertical direction and the left-right direction. For example, the object image G2 itself moves along an oblique direction or a curved line. It may increase (that is, indicate a movement approaching the imaging unit C), or may decrease (that is, indicate a movement away from the imaging unit C), or may combine these movements.
The object image G2 may have any shape / color arrangement as long as the operation check (operation check) of the monitoring device S can be performed even if the object image G2 is other than the above-described rectangle, circle, and human shape.

  In the present invention, the operation confirmation device can be used not only on the site (indoor or outdoor) of a nuclear power plant, but also on a power plant such as thermal power, hydraulic power, solar power, wind power, wave power, etc. Other facilities such as plants, water purification plants, airports, harbor facilities, etc. can be used both indoors and outdoors.

DESCRIPTION OF SYMBOLS 1 Operation | movement confirmation apparatus 2 Input part 3 Synthesis | combination part 4 Output part 5 Switching part 6 Status output part K Monitoring area | region T Object S Monitoring apparatus C Imaging means J Judging means G1 Monitoring image G2 Object image G2 'Bright color part G2 "of an object image Dark portion of object image G3 Composite image G4 Output image α Image disconnected state

Claims (5)

An operation for confirming a monitoring operation in the monitoring device (S) that determines the intrusion of the object (T) into the monitoring region (K) based on the monitoring image (G1) obtained by imaging the object (T) in the monitoring region (K). A verification device,
An imaging means (C) for imaging the object (T) in the monitoring area (K), and a judgment means for determining the intrusion of the object (T) based on the monitoring image (G1) from the imaging means (C). J), and
The determination of the intrusion of the object (T) based on the composite image (G3) obtained by combining the monitoring image (G1) and the object image (G2) imitating the intruding object (T) instead of the monitoring image (G1). Means (J) to determine the monitoring operation in the monitoring device (S),
The have a synthesizing unit for synthesizing the object image (G2) of the monitor image (G1) (3),
The synthesizing unit (3) generates the synchronization block (31) for separating the vertical synchronization signal (N2) and the horizontal synchronization signal (N3) from the analog signal of the monitoring image (G1), and the object image (G2). have an object generation block (32),
In the synchronization block (31), the portion of the analog signal of the monitoring image (G1) whose potential is 0V is the vertical synchronization portion corresponding to the vertical synchronization signal (N2) or the horizontal synchronization signal ( N3) corresponding to the horizontal synchronization portion,
In the synchronization block (31), the time when the vertical synchronization portion is 0V is a multiple of the time when the horizontal synchronization portion is 0V, so that the vertical synchronization signal (N2) and the horizontal synchronization signal (N3) to distinguish,
The synchronization block (31) detects, based on the analog signal of the monitoring image (G1), an odd / even field signal (indicating whether the current scanning line is an odd-numbered scanning line or an even-numbered scanning line among all scanning lines. N1) is also separated, and this odd / even field signal (N1) is output to the object generation block (32).
The object generation block (32) has a field number counter (35) for inputting only the odd / even field signal (N1) from the synchronization block (31), and a field number signal ( A start position block (36) for calculating the start position of the object image (G2) in the monitoring image (G1) by inputting only N8), and only the start position signal (N9) from this start position block (36). An end position block (37) for calculating the end position of the object image (G2) in the monitoring image (G1) and inputting only the end position signal (N10) from the end position block (37) An area block (38) for calculating an area from the start position to the end position of the object image (G2) in the monitoring image (G1);
The field number counter (35) starts counting the number of rising and falling edges of the odd / even field signal (N1) for the first time when the composite signal (N7) from the external input (12) is input, The counted number is output as a field number signal (N8) to the start position block (36), and
It said field counter (35), the monitoring image in the signal contained in the analog signal (G1), the operation check device characterized that you enter only the odd / even field signal (N1). The object generation block (32) is pre-Symbol monitoring image (G1) vertical synchronization counter for outputting a vertical data signal (N12) including at least a count of the number of counts and counted vertical synchronizing portion of the vertical synchronization portion of (39a And a horizontal synchronization counter (39b ) that counts the number of horizontal synchronization portions of the monitoring image (G1) and outputs a horizontal data signal (N13) including at least the counted number of horizontal synchronization portions,
When the external input (12) is turned on, the vertical synchronization counter (39a) starts reading the vertical synchronization signal (N12), and the horizontal synchronization counter (39b) reads the horizontal synchronization signal (N13). operation check device according to claim 1, characterized that you initiate. The object generation block (32), before Symbol vertical synchronization counter the vertical data signal from (39a) (N12) and the monitoring image on the basis of the horizontal data signal (N13) from the horizontal sync counter (39 b) of the (G1) It also has a synthesis instruction block (40) for instructing where to synthesize the object image (G2),
The flag in the synthesis instruction block (40) is a horizontal corresponding to the start position of the object image (G2) in which the number of horizontal synchronization parts counted by the horizontal synchronization counter (39b) is determined by the area block (38). It rises when it matches the number of synchronization parts, and when this flag rises, the potential of the synthesis instruction signal (N14) output from the synthesis instruction block (40) also rises, and the monitoring image by the synthesis unit (3) Synthesis of the object image (G2) to (G1) is started,
The flag in the composition instruction block (40) is a horizontal corresponding to the end position of the object image (G2) in which the number of horizontal synchronization parts counted by the horizontal synchronization counter (39b) is determined by the area block (38). It rises even when it matches the number of synchronization parts, and when this flag rises, the potential of the synthesis instruction signal (N14) output from the synthesis instruction block (40) drops and is monitored by the synthesis unit (3). The synthesis of the object image (G2) to the image (G1) is finished ,
The synthesis instruction block (40) converts the analog signal of the monitoring image (G1) into a light color signal (N16) and a dark color part (G2 ″) corresponding to the light color part (G2 ′) in the object image (G2). A light / dark instruction signal (N15) indicating which of the corresponding dark color signals (N17) is to be replaced is also output,
The object generation block (32) outputs the light color signal (N16) or the dark color signal (N17) to the switching unit (5) based on the light / dark instruction signal (N15) from the synthesis instruction block (40). It also has a light and dark block (41)
The light / dark block (41) includes an electric signal maintaining a potential corresponding to the light color portion (G2 ′) as the light color signal (N16) and the dark color portion (G2 ″) as the dark color signal (N17). operation check device according to claim 2 electric signal keeping the electric potential corresponding to the characterized that you have entered into. An input unit (2) for inputting the monitoring image (G1) from the image pickup means (C) and connecting to the image pickup means (C) so as to be retrofitted;
The combining unit (3) combines the object image (G2) with the monitoring image (G1) input from the input unit (2),
An output unit (4) capable of outputting the synthesized image (G3) synthesized by the synthesis unit (3) to the determination unit (J) and connected to the determination unit (J) so as to be retrofitted;
The output image (G4) output from the output unit (4) to the judging means (J) is used as one of the synthesized image (G3) and the monitoring image (G1) as it is input from the imaging means (C). switchable switching unit (5) operation check device according to any one of claims 1-3, characterized in that it is perforated. Monitoring device, characterized in that it have a behavior verification device according to any one of claims 1-4.