JP2017063277A - Display control device and display control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display control device capable of easily searching for another subject even after enlarging by zoom-in operation and displaying a certain subject among a plurality of subjects displayed on an image.SOLUTION: The display control device connected to an imaging device via a network, includes a control means that controls to display on display means a photographed image 2107 taken by the imaging device at a photographing field angle before executing telephoto operation at a timing of receiving a telephoto instruction and a photographed image 2101 under currently being taken after executing telephoto operation. The control means controls to display information 2108 showing a photographing range of the image under currently being photographed on the photographed image taken before executing telephoto operation.SELECTED DRAWING: Figure 5B

Description

  The present invention relates to a display control device and a display control method, and more particularly to an operation screen for remotely operating a camera.

  In recent years, a distribution system using an IP (Internet Protocol) network such as the Internet for camera images has been increasing, and it has been adopted for an Internet site for distributing the situation of ski resorts and zoos, a store / building monitoring, and the like.

  In this camera, a system in which the camera is provided with functions for driving left and right (pan), up and down (tilt), and imaging magnification (zoom) positions, and can be remotely operated to monitor a wide range with high resolution has been widespread. As an example of this remote operation method, for example, Patent Document 1 discloses the following technique. A panorama image is created using an image of the pan / tilt drive range captured in advance, and the pan / tilt drive is specified for the camera by specifying the shooting position as the panorama image, and the current display range including the zoom magnification is panorama. It has been proposed to display a rectangle on the image.

JP 2001-136514 A

When zooming to the telephoto side, the peripheral part of the imaged area is out of frame, and the surrounding situation cannot be confirmed after zooming in.
As shown in FIGS. 6A and 6B, when the user wants to take an image zoomed in on the subject B after taking a zoomed image on the subject A, the user zooms in on the subject A. Zoom out from. Then, after finding the subject B, it is necessary to zoom in again on the subject B, and it takes time to capture the zoomed-in image.

In the invention described in Patent Document 1, the panoramic image is a still image created in the past (when the camera is installed). Therefore, there is a possibility that the real-time situation around the area that is currently zoomed in and captured is unknown.
An object of the present invention is to make it possible to easily search for another subject even after a subject in which a plurality of subjects are displayed in an image is enlarged and displayed by a zoom-in operation.

  The display control apparatus according to the present invention is a display control apparatus connected to an imaging apparatus via a network, and the imaging apparatus captures an image at an imaging angle of view before executing a telephoto operation at a timing when a telephoto instruction is received. A control unit configured to control the display unit to display a captured image and an image currently being captured after the telephoto operation is performed, and the control unit captures the captured image captured before the telephoto operation is performed; And controlling to display information indicating the imaging range of the image currently being captured.

  According to the present invention, it is possible to easily search for another subject even after a certain subject in which a plurality of subjects are displayed in an image is enlarged and displayed by a zoom-in operation.

It is a figure explaining the structural example of the imaging system which concerns on embodiment of this invention. It is a block diagram which shows an example of the hardware constitutions of the imaging device which concerns on embodiment of this invention. It is the schematic which shows an example of the display part of the client which concerns on embodiment of this invention. It is the flowchart which showed the imaging timing of the still image displayed on the assist screen which concerns on embodiment of this invention. It is the flowchart which showed the imaging timing of the still image displayed on the assist screen which concerns on embodiment of this invention. It is the flowchart which showed the imaging timing of the still image displayed on the assist screen which concerns on embodiment of this invention. It is a block diagram which shows an example of the hardware constitutions of the client which concerns on embodiment of this invention. It is a figure explaining the process process which concerns on embodiment of this invention. It is a figure explaining the process process which concerns on embodiment of this invention. It is a figure explaining the process process which concerns on embodiment of this invention. It is a figure explaining the conventional subject.

Hereinafter, an embodiment of a display control device of the present invention will be described with reference to the drawings.
FIG. 1A is a diagram illustrating an example of a system configuration of an imaging system according to an embodiment of the present invention. In the imaging system according to the present embodiment, the imaging device 100 is connected to a client 200 that is an external device via a network 300. Thereby, the imaging apparatus 100 can communicate with the client 200 via the network 300. The imaging device 100 distributes the captured image to the client 200 via the network 300.

  Here, the client 200 is an example of an external device, and is configured by, for example, a display control device. The display unit 210 of the client 200 will be described later with reference to FIG. Note that the imaging apparatus 100 according to the present embodiment is a monitoring camera that captures moving images, and more specifically, is an imaging apparatus used for monitoring, and communication between the imaging apparatus 100 and the client 200 is imaging. Communication defined by the device 100 is executed. In addition, the imaging apparatus 100 according to the present embodiment is installed on a wall surface or a ceiling.

  The network 300 includes a plurality of routers, switches, cables, and the like that satisfy a communication standard such as Ethernet (registered trademark). In the present embodiment, any communication standard, scale, and configuration may be used as long as communication between the imaging apparatus 100 and the client 200 can be performed.

  For example, the network 300 may be configured by any of the Internet, a wired LAN (Local Area Network), a wireless LAN (Wireless LAN), a WAN (Wide Area Network), and the like. Note that the imaging apparatus 100 in the present embodiment may be compatible with, for example, PoE (Power Over Ethernet (registered trademark)), and may be supplied with power via a LAN cable.

The client 200 transmits a command to the imaging apparatus 100. For example, the client 200 transmits a command (request) for changing the imaging direction or angle of view of the imaging apparatus 100 in a prescribed format.
The imaging apparatus 100 changes the imaging direction in accordance with a command for changing the imaging direction (pan, tilt) received from the client 200. In addition, the imaging apparatus 100 changes the angle of view according to the telescopic operation execution command for changing the angle of view (zoom magnification) received from the client 200.

FIG. 1B is a diagram illustrating an example of a driving mechanism for the imaging apparatus 100 according to the present embodiment to change the imaging direction or the angle of view.
The pan driving mechanism 111 changes the imaging direction of the imaging device 100 to the pan direction. In addition, the tilt drive mechanism 112 changes the imaging direction of the imaging apparatus 100 to the tilt direction. Further, the zoom mechanism 113 changes the zoom magnification of the imaging apparatus 100.

  That is, the pan driving mechanism 111, the tilt driving mechanism 112, and the zoom mechanism 113 constitute a PTZ driving mechanism that changes the imaging position of the imaging unit 103 by changing the pan, tilt, and zoom of the imaging device 100, respectively. . In the present embodiment, it is assumed that each of the pan driving mechanism 111, the tilt driving mechanism 112, and the zoom mechanism 113 includes a stepping motor and a gear.

FIG. 2 is a block diagram illustrating an example of a hardware configuration of the imaging apparatus 100 according to the present embodiment.
In FIG. 2, 122 is a front lens in the imaging optical system, 124 is a variator lens, 126 is an image sensor, 128 is a video signal processing circuit, 130 is an encoding circuit, 132 is a buffer, 134 is a communication circuit (hereinafter referred to as I / I). F)) 136 is a communication terminal.
Reference numeral 138 denotes a still image storage circuit, 140 denotes an imaging position storage circuit, 142 denotes a pan driving circuit, 143 denotes a tilt driving circuit, and 144 denotes a variator lens driving circuit (hereinafter referred to as a zoom driving circuit).
Reference numeral 146 denotes a central processing circuit (hereinafter referred to as CPU). Reference numeral 148 denotes an electrically erasable nonvolatile memory (Electrically Erasable Programmable Read Only Memory; EEPROM).

The operation will be described below with reference to FIG.
Light rays from the subject to be imaged enter the image sensor 126 through the front lens 122 and the variator lens 124 of the imaging optical system, and are photoelectrically converted. The zoom drive circuit 144 moves the variator lens 124 in the optical axis direction based on the drive signal from the CPU 146. As the variator lens 124 moves, the focal length of the imaging optical system changes. Due to the above-described variation in the focal length, the imaging field angle of the video transmitted by the imaging device 100 of the present embodiment varies.

As described above, in FIG. 2, 142 is a pan driving circuit, and 143 is a tilt driving circuit. A pan driving motor (not shown) is driven based on a driving signal input from the CPU 146 to the pan driving circuit 142. With the driving operation, the pan driving mechanism 111 in FIG. 1B is driven, and the imaging direction in the pan direction in the imaging apparatus 100 changes.
Similarly, a tilt drive motor (not shown) is driven based on a drive signal input from the CPU 146 to the tilt drive circuit 143, whereby the tilt drive mechanism 112 is driven, and the imaging direction of the tilt direction in the imaging apparatus 100 changes. .

  In the present embodiment, when normal imaging is performed, a luminance signal and a color difference signal are output from the video signal processing circuit 128 to the encoding circuit 130 according to an instruction from the CPU 146. The video signal encoded by the encoding circuit 130 is transmitted to the outside through the buffer 132, the I / F 134, and the communication terminal 136.

  The still image storage circuit 138 stores the luminance signal and the color difference signal output from the video signal processing circuit 128 in the memory in accordance with an instruction from the CPU 146, and outputs these signals to the encoding circuit 130 in accordance with the instruction from the CPU 146. Similarly, the video signal encoded by the encoding circuit 1130 is transmitted to the outside through the buffer 132, the I / F 134, and the communication terminal 136.

  The imaging position storage circuit 140 is used when the still image stored in the still image storage circuit 138 is captured, and the current focal length of the optical system, the position of the pan driving mechanism 111 in FIG. Store information about the location of the in memory. Then, the above-described information stored in the memory of the imaging position storage circuit 140 is transmitted to the outside via the I / F 134 and the communication terminal 136 according to an instruction from the CPU 146.

3A and 3B are schematic diagrams illustrating an example of the display unit 210 of the client 200 according to the present embodiment.
In FIG. 3A, reference numeral 210 denotes a client display unit, 2100 denotes an operation screen displayed on the display unit 210, and 2101 denotes a current imaging screen displayed on the operation screen 2100. Reference numeral 2102 denotes a slide bar for driving the camera in the pan direction, reference numeral 2103 denotes a slide bar for driving the camera in the tilt direction, and reference numeral 2104 denotes a slide bar for driving the camera to zoom.
By operating these slide bars 2102 to 2104, the slide amount is displayed on the operation screen 2100, and the drive amount can be determined according to the slide amount to be operated. That is, a command having a target position is issued as a drive command to the imaging apparatus 100.

Reference numeral 2105 denotes a snapshot operation button for storing a still image (snapshot) of the image displayed on the imaging screen 2101.
Reference numeral 2106 denotes a panorama screen displayed on the operation screen 2100, which is an image obtained by previously capturing a range of images that can be captured by the image capturing apparatus 100 by driving pan / tilt and stitching them together.

Reference numeral 2107 denotes an assist screen displayed on the operation screen 2100, which displays a still image captured at an operation timing described later as an assist image.
Reference numeral 2108 denotes a rectangular frame displayed on the assist screen 2107. The image capture screen 2101 displays the position in the assist screen 2107 that corresponds to the imaging range currently being imaged. A still image may be displayed in the rectangular frame 2108, or the current captured image displayed on the imaging screen 2101 may be updated and displayed in an overwritten form.

Reference numeral 2109 denotes a rectangular frame displayed on the panorama screen 2106, which displays the position on the panorama screen 2106 that the imaging range currently captured by the imaging screen 2101 corresponds to.
Reference numeral 2110 denotes a rectangular frame displayed on the panorama screen 2106, and displays which position the imaging range of the assist screen 2107 corresponds to on the panorama screen 2106.

FIG. 3B shows another embodiment of the display unit 210. The difference from FIG. 3A is the operation method of zoom driving.
Reference numeral 2121 denotes a zoom drive operation unit. When it is pressed, zoom drive starts, and the drive amount is determined by the pressed time.

  Next, with reference to the flowcharts of FIGS. 4A, 4B, and 4C and the hardware configuration diagram of FIG. 4D, the still image capturing timing and the screen display timing of the assist screen 2107 in FIG. 3 will be described.

FIG. 4D is a diagram illustrating a hardware configuration of the client 200.
In FIG. 4D, a CPU 201 is a central processing unit that controls the computer system. The CPU 201 configures each function to be described later by executing calculation and processing of information and control of each hardware based on the control program, and realizes each process.
A RAM 202 is a random access memory, and functions as a main memory of the CPU 201 as a work memory necessary for loading an execution program and executing the program.

  The ROM 203 is a read-only memory that records a control program that defines the operation processing procedure of the CPU 201. The ROM 203 has an area in which basic software (OS), which is a system program for performing device control of the computer system, is recorded, and an area in which information necessary for operating the system is recorded. An HDD 205 described later may be used instead of the ROM 203.

The NETIF 204 is a network interface and performs input / output control of data transmitted / received via the network.
The HDD 205 is a hard disk drive (HDD) and is a storage device. The HDD 205 is used for storing data such as application programs and image information.
The bus 206 is an input / output bus (address bus, data bus, and control bus) for exchanging data between the units described above.

  The display unit 210 has a touch input function including a touch panel that displays a plurality of operation screens and acquires information related to the touch when the user touches the displayed operation screens to operate.

  FIG. 4A shows still image capturing timing displayed on the assist screen 2107 in FIGS. 3A and 3B by the snapshot operation button 2105 in the operation screen in FIGS. 3A and 3B. It is the flowchart which showed.

In FIG. 4A, the operation of the present embodiment is started in S400.
In next step S405, the CPU 146 waits for reception of a snapshot command from the client 200.
When the snapshot operation button 2105 of the display unit 210 shown in FIGS. 3A and 3B is pressed, a snapshot command is transmitted from the client 200, and the process proceeds to S410.

In S410, the still image storage circuit 138 stores the still image in the memory, and the process proceeds to S415.
In S415, when the assist screen 2107 is valid, the client 200 temporarily disables the assist screen. The imaging apparatus 100 transmits the still image stored in the still image storage circuit 138, the position information of the captured still image, and the current pan, tilt, and zoom positions from the imaging position storage circuit 140 to the client 200. The CPU 201 of the client 200 activates the assist screen 2107.

  The CPU 201 of the client 200 displays the still image transmitted from the imaging device 100 in S415 on the assist screen 2107. Further, a rectangular frame 2108 indicating the current imaging range is displayed in the assist screen 2107 based on the pan, tilt, and zoom positions of the imaging apparatus 100. When the rectangular frame 2108 is out of the range of the still image displayed on the assist screen 2107, the CPU 201 of the client 200 may indicate that it has gone out by changing the color tone of the assist screen.

In S420, the CPU 201 of the client 200 determines the still image invalid condition, and if the invalid condition is not satisfied, the process returns to S415 and the display of the rectangular frame 2108 is repeated.
The following can be set as the still image invalid condition in S420.
(1) A still image cancel button (not shown) in the operation screen is pressed.
(2) The zoom-out operation was performed at a magnification higher than a preset magnification with respect to the still image imaging magnification.
(3) The assist screen 2107 by the zoom operation is set to be effective (described later).
(4) Panning, tilting, and zooming of the imaging apparatus 100 are not driven for a set time or more.
When any of the above conditions is established, the CPU 201 disables the assist screen 2107.

It should be noted that the invalid condition can be limited by pressing a holding button (not shown) in the operation screen 2100 in order to prevent the above-described (2) and (3) from being invalid conditions.
If the invalid condition of the assist screen 2107 is satisfied in S420, the process proceeds to S425, and the CPU 201 of the client 200 performs a still image invalidation process. In S425, the CPU 201 indicates that the assist screen 2107 is in an invalid state by deleting the assist screen 2107 or performing a clay-out.

FIG. 4B is a flowchart illustrating imaging timing of a still image displayed on the assist screen 2107 in FIG. 3A by the operation of the zoom drive slide bar 2104 on the operation screen 2100 in FIG.
In FIG. 4B, the operation of the present embodiment is started in S500.
In next step S505, the CPU 146 waits for reception of a zoom start command from the client 200.

When the zoom drive slide bar 2104 shown in the display unit 210 of FIG. 3A is operated, a zoom start command is received in S505, and the process proceeds to S510.
In S510, it is determined whether the received command is zoomed in (Tel side: zoom driving to the high magnification side) or zooming out (Wide side: zoom driving to the low magnification side). If the zoom is out, the process proceeds to S525 to start the zoom-out drive, and in S530, it is monitored whether the zoom drive is driven to the designated position. When driving to the target position, zoom driving end processing is performed in S535.

If it is determined in S510 that the received command is a zoom-in command that is a telephoto instruction, the process advances to S515, and the client 200 determines whether a still image acquisition condition is satisfied. The following can be set as the still image acquisition conditions in S515.
(1) A zoom-in command when the assist screen 2107 is not displayed or in an invalid state. Alternatively, the assist screen 2107 is enabled by the snapshot operation button 2105, and the still image invalid condition in S420 of FIG. 4A is not limited by the hold button (not shown). In addition, a zoom-in command in a state where the pan and tilt are moved by a certain amount from the center point of the still image displayed on the assist screen 2107.
(2) The zoom position is outside a certain range set from the maximum telephoto end side.
(3) The zoom drive was performed at a certain zoom ratio or more than a set zoom ratio.
If the above conditions are satisfied, the process proceeds to S520. If the conditions are not satisfied, the process proceeds to S525, and normal zoom-in driving is performed.

  Here, (1) is that, when the image is captured at a zoom magnification greater than a certain magnification, still image imaging is not performed when zooming in. This is to prevent the still image on the assist screen 2107 from being updated when the zoom-in is performed again while the assist screen 2107 is displayed. When the assist screen 2107 is displayed by the snapshot operation button 2105, pan and tilt are operated, and a still image is displayed on the zoom-in assist screen 2107. At this time, the operation for canceling the assist screen 2107 displayed with the snapshot operation button 2105 is omitted.

(2) is to prevent the still image in the zoom operation near the telephoto end from being changed to the assist screen 2107.
(3) is to prevent the assist screen 2107 from being valid in a small zoom-in operation. Examples of the set value include a drive amount and a magnification variation amount from the start of zooming. Note that this set value can be set to zero.

In S520, the still image storage circuit 138 stores the still image. Thereafter, the process proceeds to S525, and normal zoom-in driving is performed, and the process proceeds to S545.
In S545, when the assist screen 2107 is in the valid state, the CPU 201 of the client 200 temporarily enters the invalid state. The imaging apparatus 100 transmits the still image stored in the still image storage circuit 138, the position information of the captured still image, and the current pan, tilt, and zoom positions from the imaging position storage circuit 140 to the client 200. The CPU 201 of the client 200 activates the assist screen 2107.

  The CPU 201 of the client 200 displays a rectangular frame 2108 indicating the current imaging range in the assist screen 2107 from the pan, tilt, and zoom positions of the still image and the imaging apparatus 100 on the assist screen 2107. When the rectangular frame 2108 is out of the range of the still image displayed on the assist screen 2107, the CPU 201 of the client 200 may indicate that it has gone out by changing the color tone of the assist screen.

In S550, the CPU 201 of the client 200 determines the still image invalid condition, and when the invalid condition is not satisfied, the display of the rectangular frame 2108 is repeated in S545.
The following can be set as the still image invalid condition in S550.
(1) The zoom-out operation was performed with respect to the still image imaging magnification by a predetermined magnification or more.
(2) A still image cancel button (not shown) in the operation screen is pressed.
(3) The assist screen 2107 is disabled by the snapshot operation button 2105 in the operation screen.
(4) Panning, tilting, and zooming of the imaging apparatus 100 are not driven for a set time or more.
When any of the above conditions is satisfied, the CPU 201 disables the assist screen 2107 and does not perform still image capturing.
The above (1), (2) and (4) are the same as the still image invalid condition in S420.

If the invalid condition for the assist screen 2107 is established in S550, the CPU 201 of the client 200 performs still image invalidation processing in S555. In S555, the CPU 201 indicates that the assist screen 2107 is in an invalid state by deleting the assist screen 2107 or performing a clay-out.
Note that the still image storage timing in S520 of the present embodiment is before zoom driving, but may be any zoom driving position until zoom driving ends. In this case, preferably among the still image acquisition conditions of S515,
(3) The zoom drive amount is greater than a set value, or greater than a certain ratio.
It is desirable that the value be within the range of the driving amount that is the set value.

FIG. 4C is a flowchart illustrating imaging timing of a still image displayed on the assist screen 2107 in FIG. 3B by a zoom operation using the zoom operation button 2121 on the operation screen 2100 in FIG.
The difference from FIG. 4B is that the zoom drive by the zoom operation button 2121 in FIG. 3B depends on the operating time, and a zoom start command and a zoom end command are sent from the client 200 to the imaging apparatus 100. Is controlled by.

Therefore, the difference from FIG. 4B is that S530 is a Zoom end command reception, and the still image acquisition condition of S515 is
(3) The zoom drive amount is greater than a set value, or greater than a certain ratio.
In FIG. 4C, the condition is that the process has moved to S540.

Hereinafter, the difference from FIG. 4B will be described with respect to the flow after storing the still image in S520 in the steps after the determination of the establishment of the still image acquisition condition in S515.
If the following condition is satisfied as the still image acquisition condition in S515, the process proceeds to S520.
(1) A zoom-in command when the assist screen 2107 is not displayed or disabled. Alternatively, the assist screen 2107 is enabled by the snapshot operation button 2105, and the still image invalid condition in S420 of FIG. 4A is not limited by the hold button (not shown). In addition, a zoom-in command in a state where the pan and tilt are moved by a certain amount from the center point of the still image displayed on the assist screen 2107.
(2) The zoom position is outside a certain range set from the maximum telephoto end side.

In S520, the still image storage circuit 138 stores the still image, and the process proceeds to S525 to perform normal zoom-in driving and the process proceeds to S540.
In S540, the client 200 monitors the zoom position, and determines whether or not the zoom drive amount from the zoom drive start position is greater than or equal to a set fixed ratio or greater than a certain ratio.

If it is not equal to or greater than the predetermined drive amount, it is determined in S560 whether or not the zoom drive has been completed. If completed, the process ends in S595, and if not completed, the process returns to S540.
If the client 200 can simultaneously operate the zoom operation button 2121 and the snapshot operation button 2105, the client 200 monitors whether or not the snapshot operation button 2105 is pressed in S560. If the snapshot operation button 2105 has been pressed, the process proceeds to the end process in S595.

If the zoom drive amount is greater than or equal to a certain position in S540, the process proceeds to S545.
The processing after S545 is the same as that in FIG. 4B, and the still image stored in S520 is displayed on the assist screen 2107, and a rectangular frame 2108 indicating the current imaging range is displayed.
Note that the still image storage timing in S520 of this embodiment is before zoom driving as in FIG. 4B, but may be any zoom driving position until the end of zoom driving. In this case, it is desirable that the driving amount is within the range of the set value of the still image acquisition condition in S540.

FIGS. 5A to 5C are diagrams specifically showing how the images on the imaging screen 2101 and the assist screen 2107 transition in pan, tilt, and zoom operations on the operation screen 2100. FIG.
FIG. 5A is a diagram illustrating a state in which subjects A and B are confirmed on the operation screen. The subject A is in the vicinity of the center of the current imaging screen 2101. The operator operates the zoom drive slide bar 2104 to perform a zoom operation, and enlarges the subject A for confirmation.

  FIG. 5B is a diagram showing an operation screen 2100 in a state where a zoom operation is performed. A current image of the subject A is displayed on the imaging screen 2101, and a still image when the zoom operation is performed in FIG. 5A is displayed on the assist screen 2107, indicating the display range of the current imaging screen 2101. A rectangular frame 2108 is displayed.

Next, in order to confirm the subject B, the operator confirms in which direction the subject B is located from the rectangular frame 2108 indicating the current imaging position on the assist screen 2107, and the pan driving slide bar 2102, tilt driving. The subject B is searched by operating the slide bar 2103.
FIG. 5C is a diagram showing the operation screen 2100 in a state where the subject B is being imaged. The subject B is displayed on the imaging screen 2101, and a rectangular frame 2108 indicating the current imaging range is displayed on the assist screen 2107. ing.

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

DESCRIPTION OF SYMBOLS 100 Image pick-up device 103 Image pick-up part 111 Pan drive mechanism 112 Tilt drive mechanism 113 Zoom mechanism 122 Front lens 124 124 Variator lens 126 Image sensor 130 Encoding circuit 132 Buffer memory 134 Communication circuit (I / F)
136 Communication terminal 138 Still image storage circuit 140 Imaging position storage circuit 142 Pan drive circuit 143 Tilt drive circuit 144 Variator lens drive circuit (zoom drive circuit)
146 Central processing circuit (CPU)
148 Nonvolatile memory (EEPROM)
200 client PC
210 Client Display Unit 300 Network 2100 Operation Screen 2101 Imaging Screen 2102 Pan Drive Slide Bar 2103 Tilt Drive Slide Bar 2104 Zoom Drive Slide Bar 2105 Snapshot Operation Button 2106 Panorama Screen 2107 Assist Screen 2108 Rectangular Frame 2109 Showing Image Range Rectangular frame 2110 Imaging range 2121 of the assist screen Zoom drive button

Claims (6)

A display control device connected to an imaging device via a network,
At a timing when a telephoto instruction is received, a captured image captured by the imaging apparatus at a capturing angle of view before executing a telephoto operation and an image currently being captured after performing the telephoto operation are displayed on a display unit. Comprising control means for controlling,
The display control apparatus, wherein the control means controls to display information indicating an imaging range of an image currently being captured on a captured image captured before the telephoto operation is performed. When zoom driving more than a certain magnification, when receiving an instruction to drive, or when receiving an instruction to drive,
The display control apparatus according to claim 1, wherein the control unit controls to display a captured image captured at the time of zooming in. If you are shooting at a zoom ratio greater than a certain magnification,
The display control apparatus according to claim 1, wherein the control unit performs control so as not to capture a still image when zooming in. When zooming out at a certain magnification,
The display control apparatus according to claim 1, wherein the control unit does not display a captured image captured by the imaging apparatus at an imaging field angle before executing the telephoto operation. A display control method connected to an imaging device via a network,
At a timing when a telephoto instruction is received, a captured image captured by the imaging apparatus at a capturing angle of view before performing a telephoto operation and an image currently captured after performing the telephoto operation are displayed on the display unit. A control process for controlling,
The display control method, wherein the control step performs control so that information indicating an imaging range of an image currently being captured is displayed on a captured image captured before the telephoto operation is performed. A program for causing a computer to execute a display control method connected to an imaging device via a network,
At a timing when a telephoto instruction is received, a captured image captured by the imaging apparatus at a capturing angle of view before performing a telephoto operation and an image currently captured after performing the telephoto operation are displayed on the display unit. Let the computer execute the control process to control
The control step controls the computer to display information indicating an imaging range of an image currently being captured on a captured image captured before executing the telephoto operation.

Images