JP2013030924A - Camera control device, camera control method, and camera control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a camera control device allowing a user to intuitively instruct a capturing direction of a camera.SOLUTION: A receiving unit 101 receives image data of an image captured by a camera and angle data in a horizontal direction of a capturing direction of the camera. A storage unit 105 stores camera icon data, map data, and camera position data. A first combining unit 106 combines a camera icon at a camera position on a map, and a second combining unit 106 combines a captured image in a direction corresponding to the angle data received by the receiving unit with reference to the camera icon. A display unit 107 displays the combined image. An operation unit 108 accepts a moving operation with respect to the captured image displayed by the display unit 107. A detection unit 104 detects the moving operation with respect to the captured image. An instruction unit 105 instructs driving of a camera pan according to a movement angle with respect to a camera icon of the moving operation.

Description

  The present invention relates to a camera control device, a camera control method, and a camera control program for controlling the pan direction of a camera.

  A wide range of monitoring locations can be monitored by controlling a zoom lens and a camera with a pan head that changes the imaging direction by horizontal rotation (panning) or vertical rotation (tilting). Monitoring systems are known.

  In such a surveillance system, when a camera icon is dragged, a camera operation device that changes the horizontal imaging direction of the camera (hereinafter referred to as the pan direction) and directs the camera icon on the map in the pan direction has been proposed. (For example, see Patent Document 1).

JP-A-8-154197

  The camera operation device described in Patent Document 2 displays a video image captured by the camera in a video window and displays a map and a camera icon of the camera in a map window. When the operator switches the control mode to the pan change mode and drags the camera icon in the direction in which the camera icon is desired to be imaged, the pan head drive unit of the camera rotates in the horizontal direction, so that the pan direction can be changed. However, in the camera operation device described in Patent Document 2, since the camera icon is only displayed small on the map, it is difficult to operate, and it is difficult to intuitively instruct to change the pan direction of the camera. There was a problem.

  Therefore, a problem to be solved by the present invention is to provide a technique capable of instructing to change the pan direction of the camera intuitively.

In order to solve the above problems, the present invention provides the following apparatus, method and program.
1) In a camera control apparatus that is connected to a camera via a communication line and displays a captured image captured by the camera and controls the camera, the image data of the captured image captured by the camera and the horizontal direction of the imaging direction of the camera A receiving unit (101) that receives angle data indicating the angle of the camera, icon data that is image data of a camera icon, map data that indicates a map of an area where the camera is installed, and a camera that indicates the position of the camera A storage unit (105) for storing position data, and a first combining unit (1) for combining a first combined image obtained by combining a camera icon with a camera position on the map from icon data, map data, and camera position data. 106) and a second synthesized image obtained by synthesizing the captured image in the direction corresponding to the angle data with the camera icon as a reference. A second synthesizing unit (106), a display unit (107) for displaying the second synthesized image, an operating unit (108) for accepting an operation for moving the captured image displayed by the display unit, and an operating unit And an instruction unit (104) for instructing the camera to pan in such a manner that the angle of the captured image that moves in response to the movement operation received in accordance with the movement angle with respect to the camera icon is a horizontal angle. Control device.
2) A camera control method in a camera control apparatus that is connected to a camera via a communication line and displays a captured image captured by the camera and controls the camera, the image data of the captured image captured by the camera, and the camera Receiving step for receiving the angle data indicating the horizontal angle of the imaging direction, icon data which is image data of the camera icon, map data indicating a map of the area where the camera is installed, and the position of the camera A storage step for storing the camera position data shown, a first combining step for combining a first composite image in which the camera icon is combined with the position of the camera on the map from the icon data, the map data, and the position data; A composite image of 1 is combined with a second composite image obtained by combining the captured image in a direction corresponding to the angle data with the camera icon as a reference. A second combining step, a display step for displaying the second combined image, an operation step for receiving an operation for moving the captured image displayed in the display step, and a movement operation received in the operation step. And an instruction step for instructing the camera to pan so that the angle of the captured image to be moved is a horizontal angle corresponding to the movement angle with respect to the camera icon.
3) A camera control program that is connected to a camera via a communication line and displays a captured image captured by the camera on a display unit and is used for a computer that controls the camera, and image data of the captured image captured by the camera A receiving function for receiving the angle data indicating the horizontal angle of the imaging direction of the camera, icon data indicating the image of the camera icon, map data indicating a map of the area where the camera is installed, A storage function for storing camera position data indicating a position, and a first combining function for combining a first combined image in which a camera icon is combined with a camera position on a map from icon data, map data, and camera position data And a second synthesized image obtained by synthesizing the captured image in the direction corresponding to the angle data with the camera icon as a reference. A second combining function for combining images, a display function for displaying the second combined image on the display unit, an operation function for accepting an operation of moving the captured image displayed on the display unit by the display function, and an operation function A camera that causes a computer to implement an instruction function for instructing the camera to pan in such a way that a horizontal angle corresponding to a movement angle with respect to a camera icon of a captured image that moves in accordance with an accepted movement operation Control program.

  According to the camera control device, the camera control method, and the camera control program of the present invention, it is possible to instruct to change the pan direction of the camera intuitively.

It is a block block diagram of the camera control terminal which is one Embodiment of the camera control apparatus of this invention. It is an example of the block block diagram of the camera controlled with a camera control terminal. It is one Example of the monitoring system using a camera control terminal. It is a flowchart which shows the example of the synthetic | combination process of the display image in a camera control terminal. It is a 1st example of the synthesis | combination of the captured image in a camera control terminal. It is a 2nd example of the synthesis | combination of the captured image in a camera control terminal. It is a 3rd example of the synthesis | combination of the captured image in a camera control terminal. It is a 4th example of the synthesis | combination of the captured image in a camera control terminal. It is an example of the display image in a camera control terminal. It is an example of composition of a zoom control GUI in a camera control terminal. It is a free chart which shows the example of the pan control in a camera control terminal.

Hereinafter, a camera control terminal which is an embodiment of a camera control device of the present invention will be described with reference to the accompanying drawings.
[Monitoring system configuration]
A monitoring system using an embodiment of the camera control terminal 10 of the present invention will be described with reference to FIG. The monitoring system in FIG. 3 is an example of a monitoring system that monitors the inside of a store. The monitoring camera 20 for monitoring the inside of the store and the zooming and panning of the monitoring camera 20 are controlled or captured by the monitoring camera 20. And a camera control terminal 10 for viewing images. In order to simplify the description, an example in which there is one monitoring camera 20 will be described, but it goes without saying that there may be a plurality of monitoring cameras 20.

  The surveillance camera 20 is attached to a high place such as a ceiling so that the inside of the store can be seen. The camera control terminal 10 may be installed in the same store as the monitoring camera 20, or may be installed in a security guard room or the like.

The network 30 includes network devices such as a hub. The camera control terminal 10 and the monitoring camera 20 are connected to the network 30 via a LAN (Local Area Network) cable, and the camera control terminal 10 and the monitoring camera 20 communicate with each other via the network 30. The communication between the camera control terminal 10 and the monitoring camera 20 is not limited to communication via a LAN cable, but may be other communication such as a wireless LAN or a mobile phone line.
[Configuration of surveillance camera]
FIG. 2 is an example of a block configuration diagram of the monitoring camera 20 controlled by the camera control terminal 10 of the present embodiment. In the present embodiment, the monitoring camera 20 is a network camera, and transmits a captured image via the network, or changes the imaging direction according to a control signal received via the network.

  The imaging unit 201 captures a surrounding subject and sends the captured image to the compression unit 202. The compression unit 202 compresses a digital image of the image captured by the imaging unit 201 according to a standard such as JPEG (Joint Picture Expert Group) or MPEG (Moving Picture Expert Group) -4, and sends the compressed image to the communication unit 203.

  The pan angle sensor 206 outputs the horizontal angle in the imaging direction of the current imaging unit 201 as pan data. The zoom sensor 208 outputs the current magnification of the zoom lens 208 as zoom magnification data.

  The communication unit 203 transmits the compressed digital image compressed by the compression unit 202, pan data, and zoom magnification data to the camera control terminal 10 in response to a request. The communication unit 203 also receives a control signal transmitted from the camera control terminal 10 and sends it to the control unit 204.

  Based on the control signal received by the communication unit 203, the control unit 204 causes the pan / tilt head driving unit 205 to perform panning or sends a control signal for driving the zoom lens 208 to the zoom lens driving unit 207.

  The pan / tilt head driving unit 205 pans the imaging unit 201 in accordance with a control signal sent from the control unit 204 and changes the imaging direction.

  The zoom lens driving unit 207 drives the zoom lens 208 according to the control signal sent from the control unit 204 and changes the zoom magnification.

[Camera control terminal configuration]
FIG. 1 is a block diagram of a camera control terminal 10 which is an embodiment of the camera control apparatus of the present invention. The camera control terminal 10 is obtained, for example, by installing control application software on a general-purpose personal computer.

  In the camera control terminal 10, the communication processing unit 101 transmits and receives captured image data, zoom magnification data, zoom instruction data, pan data, and pan instruction data to and from the monitoring camera 20.

  The captured image data acquisition processing unit 102 decodes the compressed digital image of the standard such as JPEG or MPEG-4 received from the monitoring camera 20 by the communication processing unit 101 and sends the decoded digital image to the synthesis processing unit 106.

  The zoom magnification data acquisition processing unit 103 acquires zoom magnification data from the monitoring camera 20 through the communication processing unit 101 and sends it to the data management processing unit 105. The zoom magnification data acquisition processing unit 103 also calculates zoom instruction data for changing the zoom magnification from the input from the operation unit and the data of the data management processing unit 105, and sends the zoom instruction data to the communication processing unit 101.

  The pan data acquisition processing unit 104 acquires pan data from the monitoring camera 20 through the communication processing unit 101 and sends the pan data to the data management processing unit 105. The pan data acquisition processing unit 104 also calculates pan instruction data for changing the pan direction from the input from the operation unit 108 and the data of the data management processing unit 105, and sends it to the communication processing unit 101.

  The data management processing unit 105 acquires map data stored in advance, camera icon data, camera position data, zoom operation GUI data, zoom magnification data acquired by the zoom magnification data acquisition unit 103, and pan data acquisition The pan data acquired by the processing unit 104 is managed, and the data is provided as necessary. The map data is map data indicating the entire area such as a store where the monitoring camera 20 is installed. The camera icon data is data indicating a camera icon image to be displayed on the map. The camera position data is data indicating the position of the monitoring camera 20 on the map. The zoom operation GUI data refers to zoom operation GUI data that is displayed in the vicinity of a captured image on a map to operate the zoom.

  The composition processing unit 106 is the captured image data processed by the captured image data acquisition processing unit 102, map data stored in the data management processing unit 105, camera icon data, camera icon position data, and zoom. The display image data is synthesized using the data and the pan data. Details of the display image data composition method will be described later.

  The display unit 107 includes a liquid crystal monitor, a projector, and the like, and displays the display image data synthesized by the synthesis processing unit 106.

  The operation unit 108 is configured by a mouse, a touch panel, and the like, and an operator operates the operation unit 104 while viewing display image data displayed on the display unit 107 to give various instructions.

Display image data composition method]
A display image data synthesis method in the synthesis processing unit 106 of the camera control terminal 10 of the present embodiment will be described with reference to the flowchart of FIG. The camera control terminal 10 operates as follows as a normal display mode in the activated state.

  First, the synthesis processing unit 106 reads out map data stored in the data management processing unit 105 as background generation processing and draws it as a background (step S401).

  Next, as a camera icon superimposition process, the composition processing unit 106 reads out the camera icon data and the camera position data stored in the data management processing unit 105, and sets the camera position on the map according to the camera position data. A camera icon corresponding to the icon data is drawn (step S402).

  Next, as a captured image data display mode calculation process, the composition processing unit 106 reads camera position data stored in advance, zoom magnification data and pan data received from the monitoring camera 20 from the data management processing unit 105, and performs imaging. A mode of displaying an image on a background map is calculated as follows (step S403).

  The data management processing unit 105 stores an offset value θoff for pan data in advance, and calculates image angle data by adding the offset value θoff to the pan data. The offset value is set so that the image angle data is 0 ° when the imaging direction of the monitoring camera 20 is upward with respect to the map data.

  When the center coordinate of the camera icon is (X1, Y1), the image angle data is θ, and the distance between the center point of the camera icon and the center point of the captured image to be superimposed is D, the composition processing unit 106 superimposes the captured image to be superimposed. The coordinates of the center point of (X1 + D × sin θ, Y1 + D × cos θ) are assumed.

  5, 6, 7, and 8 show examples of captured images superimposed on camera icons. FIG. 5 is a first example of a captured image to be superimposed, and is an example in which the length D is set by zoom magnification data. As shown in FIG. 5a), the camera icon 50 is first arranged around (X1, Y1). When the zoom magnification data is Z1, a point 51a that is a distance D0 away from the camera icon 50 in the direction of the angle θ, that is, the pan direction, is set as the center point of the captured image 52a. When the zoom magnification data is Z2, a point 51b away from the camera icon 50 in the direction of the angle θ by the distance D1 is set as the center point of the captured image 51b. In the example of FIGS. 5a) and b), the distance D is calculated by making the zoom magnification data and the distance D inversely proportional, and the distance D is increased as the zoom magnification data is smaller, that is, the zoom magnification is smaller. On the contrary, the distance D may be increased as the zoom magnification data is larger, that is, as the zoom magnification is larger. In the example of FIG. 5, the size of the captured image is a constant predetermined value.

  Further, in order to indicate that the captured image 52 corresponds to the camera icon 50, the captured image 52 is connected to the outer shape of the captured image 52 and the camera icon 50 with a line or between the centers with a line. It is also preferable to represent the camera icon 50 by connecting it on the screen.

  FIG. 6 is a second example of the captured image to be superimposed, and is an example in which the distance D is set to a constant value and the size of the superimposed captured image is set by zoom magnification data. As shown in FIG. 6a), the camera icon 50 is arranged around (X1, Y1) as in FIG. When the zoom magnification data is Z1, the width of the captured image 62a is W1. In addition, a point 61 that is separated from the camera icon 50 in the direction of the angle θ, that is, the pan direction by the distance D is set as the center point of the captured image 62a.

  When the zoom magnification data is Z2, the width of the captured image is W2. Similarly to FIG. 6a), the point 61 is set as the center point of the captured image 62b. In the examples of FIGS. 6A) and 6B, the widths W1 and W2 are calculated by making the zoom data Z1 and Z2 proportional to the widths W1 and W2, and the larger the zoom data, that is, the larger the zoom magnification, the larger the width. Conversely, the width may be increased as the zoom magnification data is smaller, that is, as the zoom magnification is smaller.

  Finally, as the captured image superimposition process, the composition processing unit 106 performs enlargement / reduction processing of the captured image in accordance with the widths W1 and W2, and enlarges / reduces the calculated center point on the background map as the center of the captured image. The captured image is drawn (step S404).

  FIG. 7 shows a third example of the captured image to be superimposed, in which the length D is set by the zoom magnification data. As shown in FIG. 7a), a camera icon 50 is first arranged around (X1, Y1). When the zoom magnification data is Z1, a point 71a that is a distance D3 away from the camera icon 50 in the direction of the angle (180 ° + θ), that is, the direction opposite to the pan direction is set as the center point of the captured image 72a.

  When the zoom magnification data is Z2, a point 71b that is separated from the camera icon 50 by a distance D4 in the direction of the angle θ is set as the center point of the captured image 71b. In the example of FIGS. 7A) and 7B, the distance D is calculated by making the zoom magnification data and the distance D inversely proportional, and the distance D is increased as the zoom magnification data is smaller, that is, the zoom magnification is smaller. On the contrary, the distance D may be increased as the zoom magnification data is larger, that is, as the zoom magnification is larger. In the example of FIG. 7, the size of the captured image is a constant predetermined value.

  FIG. 8 shows a fourth example of the captured image to be superimposed, in which the distance D is set to a constant value and the size of the superimposed captured image is set by zoom magnification data. As shown in FIG. 8a), the camera icon 50 is arranged around (X1, Y1), as in FIG. When the zoom magnification data is Z1, the width of the captured image 82a is W1. Further, a point 81 away from the camera icon 50 by a distance D5 in an angle (180 ° + θ) direction, that is, a direction opposite to the pan direction is set as the center point of the captured image 82a.

  When the zoom magnification data is Z2, the width of the captured image is W2. As in FIG. 8a), the point 81 is the center of the captured image 82b. The widths W1 and W2 are calculated by making the zoom magnification data Z1 and Z2 proportional to the widths W1 and W2 in the examples of FIGS. 8A) and 8B, and increasing the zoom magnification data, that is, the larger the zoom magnification, the larger the width. Yes. Conversely, the width may be increased as the zoom magnification data is smaller, that is, as the zoom magnification is smaller.

  Finally, the combined processing unit 106 performs enlargement / reduction processing in accordance with the captured image data widths W1 and W2 as captured image superimposition processing, and enlarges / reduces the calculated center point on the background map as the center of the captured image. The captured image is drawn (step S404).

  As in the examples of FIGS. 5, 6, 7, and 8, the synthesis processing unit 106 synthesizes a display image in which a camera icon and a captured image are superimposed on a map, and sends the synthesized display image to the display unit 107. . The display unit 107 displays the sent display image (step S405).

  FIG. 9 shows an example of a display image. FIG. 9 is an example of a display image of a camera control terminal in a monitoring system installed in a store, and shows an example of displaying a captured image in the form of FIG. In FIG. 9, 91 is a map, 92a, 92b, 92c, and 92d are camera icons, and 93a, 93b, 93c, and 93d are captured images. A camera icon 92 is synthesized in accordance with the position of the camera icon on the map 91, and a captured image is displayed in the vicinity of the camera icon 92 according to the example of FIG.

  Since the camera control terminal 10 of the present embodiment expresses the zoom magnification by the display mode of the captured image having a large area to be displayed, the operator intuitively grasps the zoom magnification by looking at the image displayed on the display unit 107. can do. For example, in the example shown in FIGS. 5 and 7, since the zoom magnification is expressed by the distance between the camera icon and the captured image, the zoom magnification can be grasped intuitively. In the example shown in FIGS. 6 and 8, since the zoom magnification is expressed by the size of the captured image, it is possible to intuitively grasp the zoom magnification.

  In addition, since the camera control terminal 10 of the present embodiment expresses the pan direction by the angle with respect to the camera icon of the captured image having a large area to be displayed, the operator intuitively sees the image displayed on the display unit 107. The pan direction can be grasped.

  Moreover, since the camera control terminal 10 of the present embodiment displays the captured image in the vicinity of the camera icon, it can intuitively know which image is captured by which camera.

The direction of the camera icon 50 may be fixed or may be rotated in accordance with the pan direction.
[Pan direction control method]
A control method in which the camera control terminal 10 of the present embodiment controls the pan direction of the monitoring camera 20 will be described below. The operator can control the pan direction of the monitoring camera 20 by dragging the captured image superimposed on the map with the operation unit 108 such as a mouse of the camera control terminal 10.

  When the pan data acquisition processing unit 104 of the camera control terminal 10 detects that the operation unit 108 has dragged the captured image by the operation of the operator, the pan data acquisition processing unit 104 shifts to the operation mode. The operation mode will be described based on the flowchart of FIG.

  The pan data acquisition processing unit 104 calculates image angle data θ2, which is an angle with respect to the camera icon at the center of the dragged captured image, from the position data from the operation unit 108 and the position data of the camera icon (step S1101). Next, the pan data acquisition processing unit 104 generates pan instruction data from the image angle data θ2 (step S1102). 5 and 6, the pan data acquisition processing unit 104 subtracts the offset value θoff from the image angle data θ2 to generate pan instruction data that matches the data format of the monitoring camera 20. In the example of FIGS. 7 and 8, the pan data acquisition processing unit 104 subtracts 180 ° and the offset value θoff from the image angle data θ <b> 2 to generate pan instruction data that matches the data format of the monitoring camera 20. The pan data acquisition processing unit 104 transmits the generated pan instruction data from the communication processing unit 101 to the monitoring camera 20 (step S1103). The monitoring camera 20 that has received the pan instruction data drives the pan driving unit 205 and pans the imaging unit 201 until the value of the pan angle sensor 206 reaches the pan instruction data.

  Once the pan instruction data is transmitted, the pan data acquisition processing unit 104 sends the pan instruction data as pan data to the data management processing unit 105 (step S1104), and thereafter prohibits changing the pan data for a predetermined time as an operation waiting mode. Then, the same value is held (step S1105). From the transmission of pan instruction data due to delays in communication via the network 30 and the time taken to drive the surveillance camera 20 to pan, until the pan data actually changing the pan direction is sent Time lag occurs. If there is such a time lag, there is a risk that the operation is performed by misunderstanding that the operation is not accepted. Therefore, when the pan data acquisition processing unit 104 instructs to change the pan direction, the pan data acquisition processing unit 104 rewrites the pan data of the data management processing unit 105, assuming that the pan data has been moved in the instructed pan direction. Thereby, the composition processing unit 106 moves the display position of the captured image data in the designated pan direction. After that, the pan data acquisition processing unit 104 fixes the display position of the captured image data in the operation waiting mode for a predetermined time until the pan is actually completed.

  When the operation waiting mode has elapsed for a predetermined time (step S1106: YES), the pan data acquisition processing unit 104 cancels the operation waiting mode, permits rewriting of pan data (step S1107), and shifts to the normal display mode. On the other hand, if the operation waiting mode has not elapsed for a predetermined time (step S1106: NO), the pan data acquisition processing unit 104 further detects that the operation unit 108 has dragged the captured image (step S1108: YES), step The process proceeds to S1101 to shift to an operation mode. This is because the operator determines that the pan direction instructing the change is not preferable and instructs to change the pan direction further, so there is no need to wait for the end of the current pan, and the next pan direction change It accepts instructions. If it is not detected that the operation unit 108 has dragged the captured image (step S1108: NO), the process returns to step S1106 to maintain the operation waiting mode and monitor the passage of a predetermined time. Since the captured image is generally displayed larger than the camera icon or zoom line in order to confirm the image, it is easy to operate. In addition, since an actually displayed image is operated, it is easy to operate intuitively.

As described above, since the camera control terminal 10 according to the present embodiment gives an instruction to change the pan direction by operating the captured image displayed on the screen, it is possible to instruct the pan direction to change intuitively.
[Control method of zoom magnification]
A control method in which the camera control terminal 10 of this embodiment controls the zoom magnification of the surveillance camera 20 will be described below. The operator can control the zoom magnification of the monitoring camera 20 by operating the captured image superimposed on the map with the operation unit 108 such as a mouse of the camera control terminal 10.

  When the zoom magnification data acquisition processing unit 103 of the camera control terminal 10 detects that the operation unit 108 has selected a captured image by the operation of the operator, the zoom magnification data acquisition processing unit 103 shifts to the operation mode and performs the following operation.

  The zoom magnification data acquisition processing unit 103 first instructs the composition processing unit 106 to display a zoom operation GUI (Graphical User Interface). Receiving the instruction, the composition processing unit 106 reads the zoom operation GUI data from the data management processing unit 105 and superimposes it on the captured image or displays the zoom operation GUI in the vicinity of the captured image. An example of the zoom operation GUI is shown in FIG. 10A) is an example in which the zoom operation GUI 1001 is displayed superimposed on the upper right of the captured image 1000, and FIG. 10B) is an example in which the zoom operation GUI 1001 is displayed on the right side of the captured image 1000. The zoom operation GUI 1001 includes a zoom-in button 1011 and a zoom-out button 1012.

  When the operation unit 108 detects that the zoom-in button 1011 / zoom-out button 1012 of the zoom operation GUI 1001 has been selected, the zoom magnification data acquisition processing unit 103 sends a zoom-in signal / zoom-out signal from the communication processing unit 101 to the monitoring camera 20. Send to. When the monitoring camera 20 receives the zoom-in signal / zoom-out signal, the monitoring camera 20 drives the zoom driving unit 207 by a predetermined amount to perform zoom-in / zoom-out.

  Once the zoom-in signal / zoom-out signal is transmitted, the zoom magnification data acquisition processing unit 103 increases / decreases a predetermined value in the zoom magnification data and sends it to the data management processing unit 105 as new zoom magnification data. The change of zoom data for a predetermined time is prohibited and the same value is held. The zoom magnification data with the zoom magnification changed is transmitted after transmitting the zoom-in signal / zoom-out signal due to accumulation of delays when communicating via the network and the time taken to drive the zoom lens of the surveillance camera 20. There will be a time lag until If there is such a time lag, there is a risk that the same operation will be performed every time as if the operation is not accepted. Therefore, when the zoom magnification data acquisition processing unit 103 instructs zoom-in / zoom-out, it is considered that the zoom magnification has been changed, and only a predetermined value corresponding to a predetermined amount of driving of the zoom drive unit 207 of the camera is obtained. The zoom magnification data of the data management processing unit 105 is rewritten by changing the zoom magnification data. Thereby, the composition processing unit 106 moves the position of the captured image data or changes the size thereof. The zoom magnification data acquisition processing unit 103 then fixes the display position or size of the captured image data as an operation waiting mode for a predetermined time until the actual zoom-in / zoom-out is completed.

  The zoom magnification data acquisition processing unit 103 cancels the operation waiting mode and shifts to the normal display mode when the operation waiting mode elapses for a predetermined time. When the operation waiting mode has not elapsed for a predetermined time, when the zoom magnification data acquisition processing unit 103 further detects that the operation unit 108 has selected the zoom-in button 1011 / zoom-out button 1012, the operation mode is shifted to. This is because the operator determines that the zoom-in / zoom-out instructed in advance is not preferable and instructs further zoom-in / zoom-out, so there is no need to wait for the end of the current zoom magnification change. It accepts zoom-in / zoom-out instructions. When the operation unit 108 does not detect that the zoom-in button 1011 / zoom-out button 1012 has been operated, the operation waiting mode is maintained and the passage of a predetermined time is monitored.

  Further, the zoom magnification data acquisition processing unit 103 detects the position of the mouse cursor of the operation unit 108, and when detecting that the mouse cursor has deviated from the zoom control GUI 1001 for a predetermined time, the zoom magnification data acquisition processing unit 103 shifts to the normal display mode and performs synthesis. The processing unit 106 is instructed to cancel the display of the zoom control GUI 91.

  As described above, the camera control terminal 10 according to the present embodiment instructs zooming by operating the operation unit displayed inside or around the captured image displayed on the screen. Can do.

  Further, the present invention includes a program for causing a computer to realize the functions of the above-described apparatus. These programs may be read from a recording medium and loaded into a computer, or may be transmitted via a communication network and loaded into a computer.

DESCRIPTION OF SYMBOLS 10 Camera control terminal 20 Surveillance camera 30 Network 101 Communication processing part 102 Captured image data acquisition process part 103 Zoom magnification data acquisition process part 104 Pan data acquisition process part 105 Data management process part 106 Compositing process part 107 Display part 108 Operation part

Claims (3)

In a camera control apparatus that is connected to a camera via a communication line and displays a captured image captured by the camera and controls the camera,
A receiving unit that receives image data of a captured image captured by the camera and angle data indicating a horizontal angle of an imaging direction of the camera;
A storage unit that stores icon data that is image data of a camera icon, map data that indicates a map of an area where the camera is installed, and camera position data that indicates the position of the camera;
A first combining unit that combines a first combined image obtained by combining the camera icon with the position of the camera on the map from the icon data, the map data, and the camera position data;
A second synthesis unit that synthesizes a second synthesized image obtained by synthesizing the captured image with the first synthesized image in a direction according to the angle data with the camera icon as a reference;
A display unit for displaying the second composite image;
An operation unit that receives an operation for moving the captured image displayed by the display unit;
An instruction unit that instructs the camera to pan so that the captured image that moves in accordance with the movement operation received by the operation unit has a horizontal angle corresponding to a movement angle with respect to the camera icon. A camera control device. A camera control method in a camera control apparatus that is connected to a camera via a communication line, displays a captured image captured by the camera, and controls the camera,
A reception step of receiving image data of a captured image captured by a camera and angle data indicating a horizontal angle of an imaging direction of the camera;
A storage step of storing icon data which is image data of a camera icon, map data indicating a map of an area where the camera is installed, and camera position data indicating the position of the camera;
A first combining step of combining a first combined image obtained by combining the camera icon with the position of the camera on the map from the icon data, the map data, and the position data;
A second synthesizing step of synthesizing the second synthesized image obtained by synthesizing the captured image with the first synthesized image in a direction according to the angle data with respect to the camera icon;
A display step of displaying the second composite image;
An operation step of receiving an operation for moving the captured image displayed in the display step;
An instruction step for instructing the camera to pan so that the captured image moves in response to the movement operation received in the operation step and has a horizontal angle corresponding to a movement angle with respect to the camera icon. Camera control method. A camera control program used for a computer connected to a camera via a communication line and displaying a captured image captured by the camera on a display unit and controlling the camera,
A reception function for receiving image data of a captured image captured by a camera and angle data indicating a horizontal angle of an imaging direction of the camera;
A storage function for storing icon data indicating an image of a camera icon, map data indicating a map of an area where the camera is installed, and camera position data indicating a position of the camera;
A first combining function for combining a first combined image obtained by combining the camera icon with the position of the camera on the map from the icon data, the map data, and the camera position data;
A second combining function for combining the first combined image with a second combined image obtained by combining the captured image in a direction according to the angle data with the camera icon as a reference;
A display function for displaying the second composite image on a display unit;
An operation function for receiving an operation of moving the captured image displayed on the display unit by the display function;
The computer implements an instruction function for instructing the camera to pan in such a way that the captured image that moves in accordance with the movement operation accepted by the operation function has a horizontal angle corresponding to the movement angle with respect to the camera icon. A camera control program.