JPH10188145A - Automatic zoom monitoring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the high picture quality image of invader, to enable personal identification and to automate series of operation by searching a figure at a wide angle, sensing the figure from a picked up view image, tracing his movement, zooming up the figure in the image and telescopically picking up the image. SOLUTION: According to teaching data, a zoom control unit 8 controls the zoom magnification of optical image forming system 3a to a wide angle magnification for search, and an image pickup control unit 7 controls an image pickup device 3b, picks up an image and outputs an image signal. An image processing/measuring unit 9 searches an invader's image and senses the image of invader and a view angle control unit 5 determines a view angle in invader appear view 2. Then, the movement of invader is traced and an invader area 1 is provided near a central coordinate C of picture 2. In this case, when the movement of invader is stopped for fixed time, the zoom control unit 8 magnifies the zoom magnification of optical image forming system 3a, telescopically picks up the invader's image and acquires an object image 1' as taught.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the technical field of automation of monitoring devices in the security field such as security and security, and more particularly to active image monitoring in which a wide field of view is imaged and monitored by changing the angle of view of imaging. The present invention relates to a technical field in which an intruder is sensed using field-of-view image information, and an intruder image is zoomed up and imaged again.

[0002]

2. Description of the Related Art Conventional security monitoring devices often cannot identify a target person because the resolution of a projected target person image is insufficient, and thus a security monitoring device is required to have a zoom-up function. Therefore, devices with zoom-up have come to appear, but there is still a problem in sufficiently exerting the zoom-up function. This problem is described below.

Conventional security monitoring devices are broadly classified into a fixed camera type in which the viewing angle is fixed and an active camera type in which the viewing angle can be changed in multiple directions. The fixed camera monitors the viewing angle (= viewing ang).
Since le) is fixed, the zoom lens cannot be used effectively. The reason is that, when zooming up, the imaging field of view is reduced, and unless the captured human image is luckily present near the center of the screen, the image deviates from the zoomed up screen.

On the other hand, an active camera can change the viewing angle by rotating the camera, and one active camera can cover a wide field of view. Also, since the viewing angle can be changed, if a zoom lens is provided, the operator can track the target person image while looking at the monitor screen, move the camera viewing angle, bring the image near the center of the image, and zoom in. Is possible. That is, the active camera can acquire an image having a resolution necessary for identifying the target person.

[0005] However, as described above, the conventional active camera has a basic operating condition of manual operation by an operator, and no automatic operation technology, particularly, an automatic zooming technology has been submitted.
Cameras that determine the viewing angle according to the teaching data and zoom are published, but this is a program operation,
It does not fall into the category of automation technology, which is the subject of this issue).

[0006]

SUMMARY OF THE INVENTION The present invention relates to an active camera type monitoring device having a zooming function.
It is trying to solve the problem to fully automate the operation. The issues are as follows. (1) A sequence operation control program for executing a series of operation steps required from monitoring of an intruder to zooming up of an intruder image as a continuous flow is provided. (2) These operation steps include the following steps.

(A) Step of determining the viewing angle in the monitoring visual field according to the teaching (A) Step of imaging the visual field with the determined viewing angle at a wide angle magnification (C) Step of sensing an intruder using the visual field image (D) Intruder image (E) tracking the movement of the intruder and transmitting the person movement data (f) estimating the viewing angle so that the intruder image is located near the center of the visual field image Steps of changing (g) When the movement of the intruder is interrupted, a step of calculating the magnification from the intruder image data and the teaching size value or the image resolution data. (H) A step of zooming up according to the magnification. Steps for telephoto imaging

[0008]

According to a first aspect of the present invention, there is provided an automatic zoom monitoring apparatus comprising: an imaging unit having a zooming function for capturing an image in a visual field range; and a sensing unit for sensing a person from the captured visual field image. A visual field control means for controlling the visual field of the imaging means so as to track a sensed person; and a zoom-up instruction means for sending a command to zoom-in and image a person in the visual field image to the imaging means in consideration of timing. It is characterized by the following.

According to a second aspect of the present invention, there is provided an automatic zoom monitoring device, comprising: an image pickup device for picking up an image in a visual field range; a viewing angle setting device for setting a viewing angle in an image pickup field; Obtaining image forming means, person sensing means for sensing a person using the captured visual field image, measuring means for measuring the image of the person, tracking means for tracking a moving person, and calculating a zoom magnification. Zooming control means for transmitting to the imaging means, teaching means for teaching the direction of the field of view, wide-angle magnification, and human image size, and a sequence for sequentially executing each operation phase of the teaching phase, the search phase, the tracking phase, and the zoom-up phase An automatic zoom monitoring device comprising: an operation control unit; and in the teaching phase of the sequence operation control unit, a viewing angle of a single or a plurality of monitoring visual fields. And a wide-angle magnification value in the search phase and a person image size value to be obtained by zoom-up are input from the teaching means. In the search phase, the viewing angle determining means determines the viewing angle in the taught monitoring visual field. The imaging means forms a monitoring visual field image at the taught wide-angle magnification, the imaging means captures the formed monitoring visual field image, and the person sensing means senses a person using the visual field image. The viewing angle determining means determines the viewing angle in the visual field where the person has appeared and stops the search operation, the measuring means measures the position of the person and transmits the data to the tracking means, and in the tracking phase, the tracking means Sensing the movement of a person and transmitting the person movement data to the visual angle determining means, the visual angle determining means bringing a human image near the center of the visual field image according to the data. In the zoom-up phase, the zooming control means calculates a magnification from the person image area data measured by the measuring means and the taught person image size value and transmits a zooming command to the image forming means. In response to the instruction, the imaging unit zooms up the human image area, and the imaging unit performs telephoto imaging of the human image.

An automatic zoom monitoring device according to a third aspect of the present invention includes an image pickup means for picking up an image in a visual field range, a visual angle determining means for setting a visual angle in an image pickup visual field, and forming an image on the image pickup means by zooming a visual field image. Obtaining image forming means, person sensing means for sensing a person using the captured visual field image, measuring means for measuring the image of the person, tracking means for tracking a moving person, and calculating a zoom magnification. Zooming control means for transmitting to the imaging means, teaching means for teaching the direction of the field of view and wide-angle magnification, and sequence operation control means for sequentially executing each operation phase of a teaching phase, a search phase, a tracking phase, and a zoom-up phase; An automatic zoom monitoring device comprising: in the teaching phase of the sequence operation control means, a viewing angle value of a single or a plurality of monitoring visual fields, and a search phase. And a wide-angle magnification value of the input signal from the teaching means. Imaging, the imaging means captures the formed monitoring visual field image, and the person sensing means senses a person using the visual field image,
The viewing angle determining means determines the viewing angle in the visual field in which the person has appeared and stops the search operation, the measuring means measures the position of the person and transmits the data to the tracking means, and in the tracking phase,
The tracking means senses the movement of the person and transmits the person movement data to the viewing angle determining means, and the viewing angle determining means corrects the viewing angle to bring the person image near the center of the visual field image according to the data, and zooms up In the phase, the zooming control means calculates a scaling factor based on the human image resolution data measured by the measuring means and transmits a zooming command to the image forming means. It is characterized in that the image area is zoomed up, and the imaging means performs telephoto imaging of a human image.

According to a first aspect of the present invention, there is provided an automatic zoom monitoring device for monitoring a person at a wide angle, sensing a person from a captured field-of-view image, The movement is tracked, and the person in the image is zoomed up to take a telephoto image. Therefore,
The individual identification from the video image of the surveillance camera becomes possible, and a series of operations from the monitoring of the intruder to the acquisition of the zoomed-in image of the intruder can be completely automated.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with reference to embodiments. The device of the first embodiment is:
An active camera type monitoring device that changes the viewing angle of a camera and includes a zoom lens, senses an intruder based on image information, corrects the viewing angle in that direction, and zooms in on the intruder. It is an automatic zoom monitoring device that can be used.

Hereinafter, this embodiment will be described with reference to the drawings. FIG. 1 shows an overall configuration of a first embodiment embodying an automatic zoom monitoring device according to the present invention, and FIG. 2 is a flowchart showing operation steps thereof. In addition, FIG.
FIG. 3 shows an example of a wide-angle magnification field-of-view allocation when the apparatus of this embodiment changes the viewing angle and performs search monitoring.
B is an image processing screen of each field of view, and 2-B in FIG.
1, 2, 2 + 1, and 2 + 2 are search operation screens, and 2 in those screens schematically shows a screen in which an intruder appeared at a certain point during the search operation. In FIG.
Is an active camera used as an imaging device (imaging means) of this embodiment, and searches and monitors each of the fields of view 2-1, 2, 2 + 1, 2 + 2 by changing the viewing angle from left to right in the figure (however, In addition, the illustration of the posture of the camera 21 with a changed viewing angle is omitted for simplicity). Reference numeral 23 denotes a space (for example, a safe room) monitored by this device.

In FIG. 1, reference numeral 1 denotes an intruder image picked up at a wide-angle (wide) magnification for searching for an object, and reference numerals 2, +1 and +2 indicated by 2 and dotted frames denote viewing angles for searching for an intruder. , A solid line frame 2 is an image processing screen of a visual field image of a visual angle at which an intruder is sensed. In Intruder Image 1,
Fr is the intruder image area mask, G (Xg, Yg) is the barycentric coordinate of the intruder image area, Fh is the intruder image area X-axis length,
In the view image screen 2, C (Xc, Yc) is the view image center coordinate. Reference numeral 1 'denotes an intruder image obtained by zooming in with a visual angle determined according to teaching, and reference numeral 2' denotes a visual field image screen in that case. In the intruder image 1 ′, Fr ′ is an intruder image area mask, G ′ (Xg ′, Yg ′) is an intruder image area centroid coordinate, Fh ′ is an intruder image area X-axis length,
On the view image screen 2 ', C' (Xc ', Yc') is the view image center coordinate.

Referring to FIG. 1, an automatic zoom monitoring apparatus according to a first embodiment has an imaging unit 3 comprising an imaging optical system 3a having a zoom function, an imaging apparatus 3b, and an automatic pan head 3c.
And a control / calculation unit 4, an input / output unit 13, a communication unit 14, and a display unit 15. The control / calculation unit 4 includes a viewing angle control unit 5 and an imaging control unit 6
An imaging control unit 7, a zoom control unit 8,
Image processing / measurement unit 9 for image processing and image measurement
And recognition / determination unit 1 for recognizing and determining a target image
0, a data storage unit 11, a system control unit 12 for controlling the entire system operation of the present embodiment, and a bus 16.

Next, the operation of the automatic zoom monitoring apparatus thus configured will be described with reference to the flowchart of FIG. First, a first step (ST21 in FIG. 2) is a step of teaching the device, the direction of the visual field in which the device should search for the intruder by imaging, its wide-angle magnification, and the intruder at the time of zoom-up imaging. Teaching data for teaching the image size is input from the input / output unit 13. As shown in FIG. 1, the teaching data designates the barycentric coordinates G '(Xg', Yg ') of the intruder image area with respect to the screen center coordinates C' (Xc ', Yc') of the zoom-up imaging visual field 2 '. Data. The intruder image size teaching data is the intruder image area mask size data of the intruder image 1 ′ at the time of zoom-in imaging in FIG. 1, and the X-axis length Fh ′ of the intruder image area.
If it can be represented by Fh ′, Fh ′ is taught.

Next, according to the teaching data, the zoom control unit 8 of FIG. 1 adjusts the zoom magnification of the imaging optical system 3a to a wide-angle magnification for searching, and the viewing angle control unit 5 adjusts the tilt angle of the automatic pan head 3c. And the rotation angle are controlled to determine the imaging viewing angle in the direction of the monitoring visual field (the monitoring visual field is usually set to a plurality, but may be singular depending on the situation), and the imaging control unit 7 controls the imaging device 3b. Captured and monitored scene 2
-1, 2, 2 + 1, 2 + 2 image signals are output (ST
22).

The image processing / measurement unit 9 quantizes the image signal, searches for an intruder image in a plurality of scene images, and when an intruder appears in a certain visual field, senses the image and performs a visual angle control unit. 5 controls the automatic camera platform 3c to determine the viewing angle in the intruder appearance visual field 2 and stop the search operation (ST
23). The image processing / measurement unit 9 performs integral / differential processing (for example, Gaussian / Laplacian operation) of the pixel output value, and the recognition / judgment unit 10 determines whether the image processed data is a human image or a non-human image. Recognize and judge whether there is, and finally select only human figures,
Sensing.

Therefore, the image processing / measurement unit 9 extracts the image area of the intruder image 1, and measures the position and size of the area (ST24). The imaging device 3b sequentially sends the image signals captured at the video rate to the image processing / measurement unit 9, the image processing / measurement unit 9 calculates the characteristic parameter values of the image, and the recognition / judgment unit 10 converts the respective position data. Then, the movement of the intruder is tracked by comparing it with the first intruder position data (ST25).

Next, visual angle correction data to be used to bring the measured barycentric coordinates G of the intruder image 1 area to the enlarged area barycenter G 'of the screen 2' of the teaching data is calculated, and the visual angle control unit 5 automatically operates according to the data. The viewing angle is corrected by controlling the tilt angle and the rotation angle of the camera platform 3c, and the intruder area 1 is brought near the center coordinate C of the screen 2 (ST26). Here, if the movement of the intruder is interrupted for a certain period of time, the determination in ST27 becomes YES, and the route (A) is followed to calculate the scaling ratio from the intruder area size and the teaching size to the zoom imaging magnification, and issue the zooming command. Emit (ST28). If the intruder continues to move (NO in ST27), the process in ST26 is continued.

If the intruder does not start moving again, the determination at ST29 is NO, the zoom control unit 8 changes the zoom magnification of the imaging optical system 3a, and the imaging control unit 6 changes the imaging device 3b. The intruder image by controlling the camera (tele)
The target image 2 'is acquired as instructed (ST3).
0). If ST29 is YES, the process returns to ST25 by following the route (D), tracks the movement of the intruder, and repeats the steps from ST26.

Next, an automatic zoom monitoring device according to a second embodiment of the present invention will be described. The device of the second embodiment has the same overall hardware configuration as the device of the first embodiment (FIG. 1), and differs from the device of the first embodiment only in the installed software. The apparatus according to the second embodiment performs the zoom-up magnification based on the resolution analysis of the intruder image. It also has an algorithm for sequential zoom imaging for a plurality of intruders.

FIG. 1 shows the overall configuration of a second embodiment of the automatic zoom monitoring apparatus according to the present invention, and FIG. 5 is a flowchart showing its operation steps. FIG. 3A shows an example of a wide-angle magnification view field allocation when the apparatus of this embodiment changes the viewing angle and performs search monitoring, and FIG. 4C or D shows an image of each view field. The processing screen is a screen C, in which a plurality of intruders appear in one field of view at a certain point during the search operation, and a screen 2, 2 + 1, 2 + 2 of D.
Shows schematically screens in which a plurality of intruders appear in a plurality of fields of view. In FIG. 3A, reference numeral 21 denotes an active camera used as an imaging device (imaging unit) of the embodiment, which changes the viewing angle from left to right in FIG.
Each field of view of -1, 2, 2 + 1, and 2 + 2 is searched and monitored (however, the posture of the camera 21 whose viewing angle is changed is omitted for simplicity). Reference numeral 23 denotes a space (for example, a safe room) monitored by this device.

Next, the operation of the automatic zoom monitoring device will be described with reference to the flowchart of FIG. First, the first step (ST51 in FIG. 5) is a step of teaching the device, and the teaching data indicating the direction of the visual field in which the device should search for the intruder by imaging and the wide-angle magnification thereof is input / output unit 13 Enter more. As shown in FIG. 1, the teaching data includes the screen center coordinates C ′ of the zoom-up imaging visual field 2 ′.
This data specifies the barycentric coordinates G ′ (Xg ′, Yg ′) of the intruder image area with respect to (Xc ′, Yc ′).

Next, according to the teaching data, the zoom control unit 8 in FIG. 1 adjusts the zoom magnification of the imaging optical system 3a to a wide-angle magnification for searching, and the viewing angle control unit 5 adjusts the tilt angle of the automatic pan head 3c. And the rotation angle are controlled to determine the imaging viewing angle in the direction of the monitoring visual field, and the imaging control unit 7 controls the imaging device 3b to capture an image, and the monitored scene 2-1 to 2 + 2 +
The second image signal is output (ST52).

The image processing / measurement unit 9 quantizes the image signal, searches for an intruder image in a plurality of scene images, and, when an intruder appears in any of the visual fields, senses the image and detects a visual angle. The control unit 5 controls the automatic camera platform 3c to determine the viewing angle to the intruder appearance field of view and stop the search operation (ST53). At this time, if there are a plurality of intruders, if all the intruders are located within one visual field as shown in FIG. 4C, the visual angle is determined to the intruder appearance visual field 2 and the search operation is stopped. When the intruder is located in a plurality of visual fields as shown in FIG. 4D, for example, the leftmost intruder appearance visual field 2
And the search operation is stopped. In any case,
An additional number is assigned to the intruder image, such as 1, 1 + 1, 1 + 2, the viewing angle is determined in the order of the number 1 + i (i = 0, 1,..., N−1), and zoom-up imaging is performed one after another.

The image processing / measurement unit 9 performs integral / differential processing (for example, Gaussian / Laplacian operation) of the pixel output value, and performs processing on the image-processed data.
The recognition / determination unit 10 recognizes and determines whether the image is a human image or a non-human image, and finally selects and senses only the human image. Therefore, the image processing / measurement unit 9 extracts the image area of the intruder image 1 + i (indicated by 1 in FIG. 1) and measures the position and size of the area (ST54). The imaging device 3b sequentially sends the image signals captured at the video rate to the image processing / measurement unit 9, the image processing / measurement unit 9 calculates the characteristic parameter values of the image, and the recognition / judgment unit 10 converts the respective position data. , Intruder 1 compared to the first intruder location data
The movement of + i is tracked (ST55).

Next, the barycentric coordinates G of the measured 1 + i intruder image (denoted by 1 in FIG. 1) are displayed on the teaching data screen 2 '.
The visual angle correction data to be brought to the center of gravity G ′ of the enlarged area is calculated, and the visual angle control unit 5 corrects the visual angle by controlling the tilt angle and the rotation angle of the automatic camera platform 3c in accordance with the data, and corrects the intruder image area 1 To the vicinity of the center coordinate C of the screen 2 (S
T56).

Here, if the movement of the 1 + i intruder is interrupted for a certain period of time, the determination at ST57 becomes YES, and the route (A) is followed to change the intruder area size and the intruder image resolution data to the zoom magnification. Is calculated, and a zooming command is issued (ST58). If the 1 + i intruder continues to move, the process of ST56 is repeated. The above-mentioned image resolution data is such that the resolution determined by the optical transfer function (= OTF) of the imaging optical system 3a and the imaging device 3b (FIG. 1) has an accuracy enough to enable the individual identification of the target person. Data indicating whether or not the resolution is such that an image is provided, which is disclosed in Japanese Patent Application No. 8-105185 filed earlier by the present applicant.
As described in detail in the specification, the data is obtained by performing a spatial frequency analysis on an image obtained by imaging the target. The calculation for data calculation may be frequency analysis by Fourier transform or multi-resolution analysis by wavelet transform.

The image processing / measurement unit 9 calculates image resolution data, the recognition / judgment unit 10 evaluates the data, and determines a zoom magnification at which an optimum resolution image of the intruder is obtained. 9 calculates the magnification and issues a zooming command (ST58). If 1 + i
If the intruder does not start moving again, NO is determined in ST59, the zoom control unit 8 changes the zoom magnification of the imaging optical system 3a, and the imaging control unit 6 controls the imaging device 3b to obtain 1 + i. The intruder image is captured by telephoto (telephoto) to obtain the target image 2 ′ having the optimum resolution (ST60).

If ST59 is YES, the route (D) is followed and the process returns to ST55 to track the movement of the 1 + i intruder and repeat the steps from ST56. As described above, when the telescopic imaging of the 1 + i intruder is completed,
This image of the intruder is excluded from the subsequent search targets (ST
61). In ST62, it is determined whether or not the telephoto imaging of all the intruders has been completed, and if NO, the process returns to ST52 except for the intruder whose telephoto imaging has not been completed (route E). 1 for exclusion
Labeling is performed using the characteristic parameter of the + i intruder image, and if the characteristic parameter of the image obtained by the subsequent search operation is the same as the 1 + i intruder image, the image target person is skipped and the next intruder is skipped. (ST5
2).

When the above operation is repeated and the telephoto imaging of all the intruders is completed, YES is determined in ST62, and the entire operation is completed (route F).

[0033]

According to the automatic zoom monitoring apparatus according to the first, second, and third aspects of the present invention, in a monitoring apparatus that determines a viewing angle in an imaging field of view and captures an image of a person, a wide-angle person is searched for and a visual field image captured. Sensing people from, tracking their movement,
Since the telephoto image of the person in the image is zoomed up, a high-quality image of the intruder can be obtained, and individual identification from the surveillance camera video image, which was often often impossible due to insufficient image quality in the past, can be performed. It is possible. Further, a series of operations required from the monitoring of the intruder to the zooming up of the intruder image can be completely automated, and labor can be saved.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an overall configuration of an automatic zoom monitoring device according to a first embodiment of the present invention or an automatic zoom monitoring device according to a second embodiment;

FIG. 2 is a flowchart showing operation steps of the automatic zoom monitoring device of the first embodiment.

FIG. 3A is a diagram showing an example of a wide-angle magnification field-of-view allocation when the automatic zoom monitoring device of the first embodiment or the automatic zoom monitoring device of the second embodiment performs search monitoring; It is a figure which shows typically the image processing image of each visual field of a form automatic zoom monitoring apparatus.

FIGS. 4A and 4B are views with a wide-angle magnification (A in FIG. 3) when the automatic zoom monitoring apparatus according to the second embodiment performs search monitoring.
FIG. 4 is a diagram schematically showing an image processing screen of FIG. 3, wherein C shows a screen in which a plurality of intruders appear in one visual field, and D shows a screen in which a plurality of intruders appear in multiple visual fields. is there.

FIG. 5 is a flowchart showing operation steps of the automatic zoom monitoring device according to the second embodiment.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 Intruder image 1 ′ Intruder image by zoom-up imaging 2-1, 2, 2 + 1, 2 + 2 Each field of view in monitoring range 2 ′ field image screen 3 imaging unit 4 control / calculation unit 21 imaging device (imaging means) 23 monitoring space

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI H04N 7/18 H04N 7/18 D

Claims (6)

[Claims] 1. An image pickup device having a zooming function for picking up an image in a visual field range, a sensing device for sensing a person from a picked-up view image, and a visual field control for controlling a visual field of the image pickup device so as to track the sensed person. An automatic zoom monitoring device, comprising: a zoom-in command unit that sends a command to zoom-in and image a person in a visual field image at an appropriate timing. 2. An image pickup means for picking up an image in a visual field range, a visual angle determining means for determining a visual angle in an image pick-up field, an image forming means capable of zooming a visual field image and forming an image on the image pick-up means; A person sensing means for sensing a person using the image sensor; a measuring means for measuring an image of the person; a tracking means for tracking a moving person; a zooming control means for calculating a magnification of zooming and transmitting it to the imaging means; An automatic zoom monitoring device including teaching means for teaching the direction of the field of view, wide-angle magnification, and human image size, and sequence operation control means for sequentially executing each operation phase of a teaching phase, a search phase, a tracking phase, and a zoom-up phase. In the teaching phase of the sequence operation control means, the viewing angle value of one or more monitoring visual fields, the wide-angle magnification value in the search phase, and the zoom-up And a human image size value to be acquired by the teaching means from the teaching means. In the search phase, the viewing angle determining means determines the viewing angle in the taught monitoring field of view, and the imaging means gives the taught wide-angle magnification. A monitoring visual field image is formed, the imaging means captures the formed monitoring visual field image, the person sensing means senses a person using the visual field image, and the viewing angle determining means sets a visual field in which the person appears. The search operation is stopped by determining the viewing angle, the measuring means measures the position of the person and transmits the data to the tracking means, and in the tracking phase, the tracking means senses the movement of the person and converts the person movement data into the data. The viewing angle is transmitted to the viewing angle determining means, and the viewing angle determining means corrects the viewing angle according to the data so as to bring the person image near the center of the visual field image. The zooming control means calculates a scaling factor from the person image area data measured by the measurement means and the taught person image size value, and transmits a zooming command to the image forming means. An automatic zoom monitoring device, wherein a person image area is zoomed up, and the imaging means performs telephoto imaging of a person image. 3. An image pickup means for picking up an image in a visual field range, a visual angle determining means for determining a visual angle in an image pick-up field, an image forming means capable of zooming a visual field image and forming an image on the image pick-up means; A person sensing means for sensing a person using the image sensor; a measuring means for measuring an image of the person; a tracking means for tracking a moving person; a zooming control means for calculating a magnification of zooming and transmitting it to the imaging means; An automatic zoom monitoring device comprising: a teaching unit for teaching a direction of a visual field and a wide-angle magnification; and a sequence operation control unit for sequentially executing each operation phase of a teaching phase, a search phase, a tracking phase, and a zoom-up phase, In the teaching phase of the sequence operation control means, the viewing angle value of one or more monitoring visual fields and the wide-angle magnification value in the search phase are input from the teaching means. In the search phase, the viewing angle determining means determines the viewing angle in the taught monitoring field of view, the imaging means forms the monitoring field image at the taught wide-angle magnification, and the imaging means forms the image. An image of a monitoring visual field is taken, the person sensing means senses a person using the visual field image, the visual angle determining means determines a visual angle in a visual field in which the person has appeared, stops the search operation, and the measuring means determines the human position. In the tracking phase, the tracking means senses the movement of the person and transmits the person movement data to the viewing angle determining means, and the viewing angle determining means measures the person image according to the data. In the vicinity of the center of the visual field image, and in the zoom-up phase, the zooming control means is based on the human image resolution data measured by the measurement means. Calculating a magnification, transmitting a zooming command to the image forming unit, receiving the command, the image forming unit zooms up a person image area, and the image pickup unit performs telephoto imaging of the person image. Zoom monitoring device. 4. The automatic zoom monitoring device according to claim 1, wherein said image pickup means is an active camera. 5. The automatic imaging system according to claim 1, wherein said imaging means divides a monitoring range into a plurality of visual fields and sequentially images each visual field. Zoom monitoring device. 6. The imaging device according to claim 1, wherein said imaging means performs zoom-up imaging when the sensed person stops. Automatic zoom monitoring device.