JP2009182854A - Camera platform control method, device, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simultaneously display a plurality of objects separated from an angle of field on a video window. <P>SOLUTION: A camera platform control device has: a display control part 114 which receives video data output by a camera 101 with a camera platform to be displayed on a video window; an input part 117 which changes display size of the video window; a CPU 118 having a change amount detection function for detecting a change amount of the display size of the video window changed by the input part 117, and a camera platform position calculation function for calculating a camera platform position for controlling a camera platform part from the change amount; and a communication interface 112 which transmits the calculated camera platform position to the camera platform part. Thus, the plurality of objects separated from the angle of field are simultaneously displayed on the video window. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a pan head control method, apparatus and program for controlling the shooting direction of a camera with a pan head, and a network camera system.

  Conventionally, as a method of changing the shooting direction of a camera, there is a method of controlling a pan or tilt camera pan according to the amount of movement of a scroll bar of a video window displaying a subject or the locus of a mouse (for example, , See Patent Document 1).

Japanese Patent Laid-Open No. 08-181891

  However, the conventional method has a problem in that a plurality of subjects distant from the angle of view cannot be simultaneously displayed on the video window because the angle of view that can be taken is limited by the resolution and lens performance of the image sensor. In addition, the pan head control using a scroll bar or the like has a problem that it is difficult to move to a desired position outside the angle of view because the correspondence between the amount of movement of the bar and the amount of pan head movement cannot be intuitively grasped. It was. Further, when zoom is used to change the angle of view, there is a problem that the display size of the subject changes.

  An object of the present invention is to eliminate such problems. Specifically, a first object is to provide a pan head control method for simultaneously displaying a plurality of subjects distant from the angle of view on a video window. The second object is to provide a pan head control method that can intuitively move to the position of a subject outside the angle of view. A third object is to provide a pan head control method that does not change the display size of a subject when the angle of view is changed.

A pan head control method of the present invention is a pan head control method for controlling a pan head portion of a camera with a pan head, a video display step for displaying video data output from the camera with a pan head on a video window, A size changing step for changing a display size of the window; a change amount detecting step for detecting a change amount of the display size of the video window changed by the size changing step; and the cloud based on the change amount detected in the change amount detecting step. A pan head position calculating step for calculating a pan head position for controlling the head portion, and a pan head position controlling step for controlling the pan head portion based on the pan head position calculated in the pan head position calculating step. It is characterized by that.
The pan head control device of the present invention is a pan head control device for controlling a pan head portion of a camera with a pan head, and video display means for displaying video data output from the pan head camera on a video window; From the size change means for changing the display size of the video window, the change amount detection means for detecting the change amount of the display size of the video window changed by the size change means, and the change amount detected by the change amount detection means A pan head position calculating unit for calculating a pan head position for controlling the pan head unit; a pan head position control unit for controlling the pan head unit based on the pan head position calculated by the pan head position calculating unit; It is characterized by having.
The program of the present invention is a program for causing a computer to control the pan head part of a camera with a pan head, and a video display step for displaying video data output from the pan head camera on a video window; A size change step for changing the display size of the video window, a change amount detection step for detecting a change amount of the display size of the video window changed by the size change step, and a change amount detected in the change amount detection step. A pan head position calculating step for calculating a pan head position for controlling the pan head unit, and a pan head position control step for controlling the pan head unit based on the pan head position calculated in the pan head position calculating step; Is a program for causing a computer to execute.
The network camera system of the present invention is a network camera system in which a camera with a camera platform having a camera platform and a camera platform control device for remotely controlling the camera platform are connected via a network. Video display means for receiving video data output from a camera with a base and displaying it on a video window, size changing means for changing the display size of the video window, and amount of change in display size of the video window changed by the size changing means The change amount detection means for detecting the camera position, the camera platform position calculation means for calculating the camera platform position for controlling the camera platform from the change amount detected by the change amount detection means, and the camera platform position calculation means And a pan head position control means for controlling the pan head unit based on the pan head position.

  According to the present invention, it is possible to simultaneously display a plurality of subjects away from the shooting angle of view on the video window. It is also possible to move to the position of the subject outside the angle of view by an intuitive operation. In addition, the angle of view can be changed without changing the display size of the subject.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
FIG. 1 is a block diagram showing a system configuration of a network camera system including a pan head imaging apparatus (camera with pan head) and a pan head control apparatus according to the present embodiment. In this embodiment, the camera platform photographing device and the camera platform control device are connected via a network so that they can communicate with each other, and the camera platform photographing device can be remotely controlled from the camera platform control device. However, the pan head imaging device and the pan head control device may be configured as a single device.

  In FIG. 1, reference numeral 101 denotes a pan / tilt head photographing device, which is a pan / tilt camera having a pan head (head unit) for changing the photographing direction and a photographing function. Reference numeral 111 denotes a pan head control device, which is a computer connected to the pan head imaging device 101 via a communication network such as a LAN. The pan head control device 111 is connected to a mouse 121 as an input means and a display device 131 as an output means as an interface with a user.

  Next, the inside of the pan / tilt head photographing apparatus 101 will be described. Reference numeral 102 denotes a photographing unit that photographs a subject and converts it into video data. Reference numeral 103 denotes a video compression unit that receives video data from the photographing unit 102, performs data compression processing, and adds a pan head position at the time of photographing. Reference numeral 104 denotes a pan driving unit including a pan motor, and reference numeral 105 denotes a tilt driving unit including a tilt motor. A pan head control unit 106 controls the motors of the pan driving unit 104 and the tilt driving unit 105 in accordance with a pan head control command issued from the pan head control device 111. A communication interface (communication I / F) 107 transmits video data compressed by the video compression unit 103 and receives a pan head control command issued from the pan head control device 111.

  Next, the inside of the pan head control device 111 will be described. Reference numeral 118 denotes a CPU that controls the entire pan head control device 111. An HDD (Hard Disk Drive) 120 stores programs and parameters for the CPU 118 to control. The HDD 120 also stores programs for processing by a window control unit 115 and a pan head control request unit 116 described later. Reference numeral 117 denotes an input unit that receives data from the mouse 121. Reference numeral 112 denotes a communication interface (communication I / F) that communicates with the communication interface 107 of the pan / tilt head photographing apparatus 101, and receives compressed video data and transmits a pan / tilt head control command to the pan / tilt head control unit 106. Reference numeral 113 denotes a video decompression unit, which receives the video data compressed by the video compression unit 103 through the communication interfaces 107 and 112, performs decompression processing, and stores a pan head position at the time of shooting in a RAM (Random Access Memory) 119. To do.

  Reference numeral 115 denotes a window control unit that scales the video window to a desired size designated by the input unit 117 and stores the size information of the video window in the RAM 119. A display control unit 114 displays the video data expanded by the video expansion unit 113 on the video window generated by the window control unit 115. Reference numeral 116 denotes a pan head control request unit that generates a pan head control command according to the size of the video window generated by the window control unit 115 and transmits the pan head control command to the pan head control unit 106 through the communication interfaces 112 and 107.

  Here, the relationship between the angle of view of video that can be displayed in the video window generated by the window control unit 115, the resolution, and the position of the pan head will be described. FIG. 3 is a diagram for explaining the relationship between the angle of view and resolution of video data to be displayed in the present embodiment, and the position of the pan head.

  In FIG. 3, an area 301 is an imageable range, and is an area that can be imaged by the pan / tilt movement of the pan / tilt apparatus 101. A range indicated by 303 (a double-ended arrow) is a range in which the pan / tilt head photographing apparatus 101 can move in the pan direction, and means that it can move in a range of −180 degrees to +180 degrees in the present embodiment. A range indicated by 302 (a double-ended arrow) is a range in which the pan / tilt head photographing apparatus 101 can move in the tilt direction, and means that it can move in a range of −40 degrees to +40 degrees in the present embodiment.

  In this embodiment, the angle of view and the resolution that can be captured for each frame of the region 301 are limited by the optical performance of the imaging element and the lens. Here, in this embodiment, the video resolution is 720 pixels wide and 480 pixels long, and the angle of view of the video is 40 degrees in the vertical direction and 60 degrees in the horizontal direction due to the optical performance of the lens. The range that can be captured for each frame is limited to the size of the area indicated by 304. In this case, for example, the range that can be photographed by moving to the leftmost portion by the pan operation and moving to the uppermost portion by the tilt operation is limited to the region indicated by 305. According to the relationship between the resolution of the video and the angle of view, the pan angle is 1 degree = 720 pixels / 60 degrees = 12 pixels and the tilt angle is 1 degree = 480 pixels / 40 degrees = 12 pixels. It becomes possible.

  Next, a pan head control method according to the scaling (change in size) of the video window will be described with reference to FIGS. FIG. 2 is a flowchart of video window scaling processing. Note that the processing described below is performed by the CPU 118 in the pan head control device using other units.

  In step S <b> 201, the CPU 118 causes the display control unit 114 to display the video data expanded by the video expansion unit 113 on the video window generated by the window control unit 115. Here, FIG. 4 is a diagram illustrating an example of a video window displayed on the display device 131. In the process of step S201, it is assumed that video data having a resolution of 720 pixels wide and 480 pixels high is displayed in a video window 402 (720 pixels wide and 480 pixels high) as shown in FIG. . Note that the processing in step S201 corresponds to a processing example of a video display step in the present invention.

  In step S <b> 202, the CPU 118 stores the pan / tilt head position at the time of shooting detected by the video decompression unit 113 in the RAM 119. In this example, it is assumed that the pan angle 0 degree and the tilt angle 0 degree, which are the center coordinates of the area 304 in FIG. 3, are stored.

  In step S <b> 203, the CPU 118 stores the size information of the video window generated by the window control unit 115 in the RAM 119. In this example, it is assumed that 720 pixels horizontally and 480 pixels vertically are stored.

  Next, in step S204, the CPU 118 detects whether or not the video window has been enlarged by the window control unit 115, and proceeds to step S205 if detected. Here, for example, the input unit 117 receives an instruction to change the mouse 121 and instructs the window control unit 115 to detect whether the video window has been enlarged and generated. In this process, the input unit 117 accepts a change instruction from the mouse 121, gives a change input to the window control unit 115, and the window control unit 115 enlarges the video window. Corresponds to an example of processing.

  Next, in step S <b> 205, the CPU 118 calculates a zoom amount (change amount) of the video window and stores it in the RAM 119. In this example, it is assumed that the video window 402 shown in FIG. 4A is enlarged to the video window 404 (1080 pixels wide and 480 pixels high) shown in FIG. In this case, the horizontal direction is 1080-720 = + 360 pixels and the vertical direction is 480-480 = 0 pixels, and such a scaling amount is stored in the RAM 119. Note that the processing in step S205 corresponds to a processing example of the change amount detection step in the present invention.

  Next, in step S <b> 206, the CPU 118 creates a pan head control table from the zoom amount of the video window and the pan head position stored in the RAM 119.

  FIG. 5 is a diagram showing an example of the pan / tilt head control table created in step S206. In FIG. 5, information A before the video window enlargement is stored in a row 501, and information B after the video window enlargement is stored in a row 502. A column 503 stores the amount of scaling in pixel units of the video window detected in step S205. A column 504 stores a value obtained by converting the pixel unit in the column 503 into an angle unit. This converted value is a value converted at 12 pixels = 1 degree as described above with reference to FIG. The column 505 stores the pan head control command generated according to the angle calculated in the column 504, and the value of the column 504 is set to the pan position 0 ° and the tilt 0 ° which are the pan head positions before the video window enlargement. Is stored. In this example, the pan head position before the video window enlargement has a pan angle of 0 degree and a tilt angle of 0 degree, and after the video window enlargement, the horizontal scaling amount +30 degrees is added, so the pan head position is the pan angle. +30 degrees and tilt angle 0 degree. In step S206, the control table configured as described above is generated. When the process of step S206 is completed, the CPU 118 proceeds to step S207 and proceeds to step S208. Note that the process of step S206 corresponds to a process example of the pan head position calculating step in the present invention.

  In step S207, the CPU 118 issues a pan head control command (shooting command at a predetermined position, 507 in this example) after enlargement of the video window by the pan head control request unit 116, and the pan head control unit through the communication interfaces 112 and 107. 106. Note that the processing in step S207 corresponds to a processing example of the pan head position control step in the present invention.

  On the other hand, in step S208, the CPU 118 causes the display control unit 114 to divide the area on the video window into a plurality of display areas according to the amount of magnification of the video window. FIG. 6 is a diagram schematically showing an example of the video window divided by the process of step S208. In FIG. 6, reference numeral 601 denotes an odd-numbered video window, and reference numeral 604 denotes an even-numbered video window. Since zooming has expanded 360 pixels in the horizontal direction, the sizes of these video windows 601 and 604 are horizontal 1080 pixels and vertical 480 pixels. A region 602 is a drawing region B divided in accordance with the information B in FIG. 5 and has a drawing start coordinate of 360 pixels wide, 0 pixels high, 720 pixels wide, and 480 pixels high. . An area 603 is a drawing area a other than the area 602 in the video window 601. A region 605 is a drawing region A divided in accordance with the information A in FIG. 5, and is a region where the drawing start coordinates are 0 horizontal pixels, 0 vertical pixels, the size is 720 horizontal pixels, and 480 vertical pixels. . An area 606 is a drawing area b other than the area 605 in the video window 604. In step S208, the video window divided as described above is generated.

  In step S209, the CPU 118 receives the video data and the pan head position at the display control unit 114, and displays the video data captured at the pan head position corresponding to the pan head control command 507 shown in FIG. In this example, the image is displayed in the drawing area B602 shown in FIG. In addition, the video data previously captured at the pan head position corresponding to the pan head control command 506 remains displayed in the drawing area a603.

  Next, in step S210, the CPU 118 circulates the video shooting corresponding to the pan head control commands 506 and 507, and determines whether there is an instruction to repeat the video reception. In the case of patrol, one frame drawing is repeated in a predetermined order such as transmission of the pan head control command 506 → one frame drawing to the drawing area A 605 → transmission of the pan head control command 507 → drawing area B 602. At this time, while the drawing area A605 is being drawn, the image drawn immediately before is continuously displayed in the drawing area b606. Similarly, during drawing of the drawing area B602, the display of the image drawn immediately before is continued in the drawing area a603.

  Here, a display example of the video window in the pan head control method described above will be described with reference to FIG. In FIG. 7, a pan head imaging device 101, a pan head control device 111, and a display device 131 are shown. Reference numeral 703 denotes a door as a subject, and the pan head position for photographing the door 703 is a pan angle of 0 degrees and a tilt angle of 0 degrees in this example. Initially, only the door 703 is displayed on the display device 131 as shown in the video window 701. In this state, if the intruder 704 enters from the door 703 and moves to the right side of the door 703 (the right side of the display device 131 on the drawing), the intruder 704 has a limited shooting angle of view in the video window 701. Do not show. Here, in the present embodiment, when the video window is expanded horizontally by 360 pixels in accordance with the control table of FIG. 5, the video data captured by moving the pan angle to the right by 30 degrees as shown in 705 is displayed in the video window. Drawing is performed in the right region in 702.

  As described above, in the present embodiment, as the video window on the display device 131 is enlarged, the camera platform imaging device 101 is moved by the camera platform control device 111, and the video is displayed at a position corresponding to the enlarged area in the video window. I was able to shoot. This makes it possible to display an intruder (subject) located at a location away from the shooting angle of view, and to simultaneously display a plurality of subjects away from the shooting angle of view on the video window. In addition, when moving the pan head position to a subject outside the angle of view, it is only necessary to enlarge the video window in the direction in which the subject exists, so intuitive pan head control becomes possible. Further, for example, the pan head is rotated at a pan angle of 0 degrees and a pan angle of +30 degrees, and data having the same resolution is drawn in an area corresponding to each photographing position, so that the image can be displayed without changing the display size of the subject. The corner can be changed.

(Second Embodiment)
Next, a second embodiment of the present invention will be described. Note that the configuration of the pan / tilt head imaging apparatus and pan / tilt head control apparatus according to the present embodiment is the same as that of FIG. 1 described in the first embodiment, and thus description thereof is omitted. Also, the relationship between the angle of view and resolution of the video data and the pan head position is the same as that in FIG. 3 described in the first embodiment, and a description thereof will be omitted. Further, in the following description, description will be made with reference to the drawings used in the first embodiment.

FIG. 8 is a flowchart of the pan / tilt head control table creation process according to the present embodiment in the scaling process of the video window generated by the window control unit 115.
In step S <b> 801, the CPU 118 causes the display control unit 114 to display the video data expanded by the video expansion unit 113 on the video window generated by the window control unit 115. In this example, it is assumed that video data having a resolution of 720 pixels wide and 480 pixels high is displayed in a video window of 720 pixels wide and 480 pixels high.

  In step S <b> 802, the CPU 118 stores the pan / tilt pan / tilt head position at the time of shooting detected by the video decompression unit 113 in the RAM 119. In this example, it is assumed that a pan angle of −180 degrees and a tilt angle of +40 degrees, which are the center coordinates of the area 305 shown in FIG. 3, are stored.

  In step S <b> 803, the CPU 118 stores the video window size information generated by the window control unit 115 in the RAM 119. In this example, it is assumed that 720 pixels horizontally and 480 pixels vertically are stored.

  Next, in step S804, the CPU 118 detects whether or not the video window has been enlarged by the window control unit 115, and proceeds to step S805 if it is detected. Here, for example, it is detected whether the window control unit 115 has enlarged and generated the video window in accordance with an instruction from the mouse 121.

  Next, in step S805, the CPU 118 determines whether or not the processing at the time of enlarging the video window is digital zoom. Here, for example, it is determined whether or not the digital zoom is performed by detecting a preset operation mode flag when the video window is enlarged. If the digital zoom is determined, the process proceeds to step S806, where the CPU 118 displays video data obtained by interpolating pixels according to the enlargement amount of the video window, and returns to step S802.

  On the other hand, in step S807 when it is determined that the zoom is not a digital zoom, the CPU 118 calculates a scaling amount of the video window and stores it in the RAM 119. In this example, it is assumed that the size of the original video window of 720 pixels wide and 480 pixels high is expanded to 2160 pixels wide and 1440 pixels high. In this case, 2160 ÷ 720 = 3 times in the horizontal direction and 1440 ÷ 480 = 3 times in the vertical direction, and these magnification amounts are stored in the RAM 119.

  In step S <b> 808, the CPU 118 detects and stores which part of the video window is dragged with the mouse 121 and enlarged by the input unit 117.

  Here, FIG. 11 is a diagram for explaining the drag direction of the mouse 121. In FIG. 11, reference numeral 1102 denotes a video window, and reference numerals 1103, 1104, 1105, and 1106 denote upper left, upper right, lower left, and lower right portions of the video window, which are portions that can be dragged with the mouse 121. That is, in this embodiment, displays for performing a drag operation are provided at the four corners of the video window, and the video window can be enlarged or reduced by operating the display. In this example, it is assumed that the video window 1102 is enlarged by dragging the lower right 1106 with the mouse 121 and the direction is stored in the RAM 119.

  In step S809, the CPU 118 determines whether or not to give priority to the motion of the frame rate of the video displayed in the video window. Here, for example, the determination is performed by detecting a preset motion priority mode flag or the like.

  If it is determined in step S809 that priority is given to motion, in step S810, the CPU 118 selects which of the divided areas of the video window is to be preferentially rendered in accordance with the determination result (detection result) in step S809 ( decide. In this example, since the area is expanded by dragging in the lower right direction, priority area information that preferentially draws an area located in the lower right direction of the divided area is stored. Subsequently, in step S811, the CPU 118 creates a pan head control table from the zoom amount, pan head position, and priority area information of the video window stored in the RAM 119. If it is not determined that the movement priority is given, the process proceeds to step S811 as it is.

  Here, the details of the pan / tilt head control table created in step S811 will be described. First, FIG. 10 is a diagram schematically showing a video window enlarged in the present embodiment. An area 1002 is a video window before enlargement, and has a size of 720 pixels wide and 480 pixels vertically. An area indicated by 1001 is an enlarged video window having a size of 2160 pixels wide and 1440 pixels high. In this example, since the amount of zooming due to the enlargement of the video window is three times in both the horizontal and vertical directions, the region can be divided into a 3 × 3 matrix from regions 1002 to 1005 A to I. Here, since the drawing priority area selected in step S810 is in the lower right direction of the video window, the priority areas are the area A indicated by 1002, the area E indicated by 1004, and the area I indicated by 1005.

  FIG. 9 is a diagram showing a pan head control table reflecting the division of the video window and the drawing priority area of FIG. In FIG. 9, a column 901 stores information on the divided areas A to I shown in FIG. A column 902 stores the amount of scaling in pixel units for each video window. Further, a value obtained by converting the pixel unit of the column 902 into an angle unit is stored in the column 903, and this value is a value converted at 12 pixels = 1 degree as described above with reference to FIG. The column 904 stores the pan head control command generated in accordance with the angle calculated in the column 903. The pan head position before panning the video window is panned at -180 degrees and tilt +40 degrees. The pan head control command with the value added is stored. The column 905 stores the pan head control order when the motion is not prioritized in step S809. In this case, a pan head control command is issued in a predetermined order such as areas A, B, C, D, E, F, G, H, I, A, B. The video data is drawn in each divided area. A column 906 stores the pan head control order when priority is given to motion in step S809. In this example, pan head control commands are issued in a predetermined order such as regions A, E, I, A, E, I, A..., And video data captured at each pan head position is assigned to each divided region. Try to draw. In the divided area that is not the drawing target, the previously drawn video is drawn until the drawing order with respect to the divided area comes around.

  As described above, in the present embodiment, as the video window on the display device 131 is enlarged, the camera platform control device 111 moves the camera platform imaging device 101 and shoots at a position corresponding to the enlarged area in the video window. I was able to do it. As a result, it is possible to display a subject located at a location away from the shooting angle of view, and to simultaneously display a plurality of subjects away from the shooting angle of view in the video window. In addition, when moving the pan head position to a subject outside the angle of view, it is only necessary to enlarge the video window in the direction in which the subject exists, so intuitive pan head control becomes possible. In addition, the pan / tilt head photographing apparatus 101 is circulated to the pan / tilt head position corresponding to a plurality of display areas in the video window in a predetermined order, and data with the same resolution is drawn in the display areas corresponding to the respective photographing positions. As a result, the angle of view can be changed without changing the display size of the subject. Furthermore, by setting the drawing priority of a plurality of display areas, it becomes possible to improve the drawing speed of necessary video.

  In order to realize the present invention, a storage medium in which a program code (computer program) of software that realizes the functions of the above-described embodiments may be used. In this case, the object of the present invention is achieved by supplying the storage medium to the system or apparatus, and the computer (or CPU or MPU) of the system or apparatus reads and executes the program code stored in the storage medium.

  In this case, the program code itself read from the storage medium realizes the functions of the above-described embodiments, and the program code itself and the storage medium storing the program code constitute the present invention.

  As a storage medium for supplying the program code, for example, a flexible disk, a hard disk, an optical disk, a magneto-optical disk, a CD-ROM, a CD-R, a magnetic tape, a nonvolatile memory card, a ROM, or the like can be used.

  Needless to say, the OS (basic system or operating system) running on the computer performs part or all of the actual processing based on the instruction of the program code.

  Furthermore, the program code read from the storage medium may be written in a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer. In this case, based on the instruction of the written program code, the CPU or the like provided in the function expansion board or function expansion unit may perform part or all of the actual processing.

It is the figure which showed the system configuration | structure of the network camera system containing the pan head imaging device and pan head control apparatus which concern on embodiment of this invention. It is a flowchart explaining the window scaling process which concerns on the 1st Embodiment of this invention. It is a figure for demonstrating the relationship between the angle of view of the video data which can be displayed in embodiment of this invention, the resolution, and the position of a pan head. It is the figure which showed the video window displayed on a display apparatus in the 1st Embodiment of this invention. It is the figure which showed an example of the pan head control table produced in the 1st Embodiment of this invention. It is the figure which showed typically an example of the image | video window divided | segmented in the 1st Embodiment of this invention. It is a figure which shows the example of a display of the video window displayed in the 1st Embodiment of this invention. It is a flowchart of a pan head control table creation process in the scaling process of the video window according to the second embodiment of the present invention. It is the figure which showed an example of the pan head control table produced in the 2nd Embodiment of this invention. It is the figure which showed typically the video window expanded in the 2nd Embodiment of this invention. It is a figure for demonstrating the drag direction for the size change of the video window displayed in the 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 Pan head imaging device 102 Image pick-up part 103 Image | video compression part 104 Pan drive part 105 Tilt drive part 106 Pan head control part 107,112 Communication interface 113 Video expansion part 114 Display control part 115 Window control part 116 Pan head control request part 117 Input Part 118 CPU
119 RAM
120 HDD
121 mouse 131 display device

Claims (12)

A pan head control method for controlling a pan head portion of a camera with a pan head,
A video display step of displaying video data output from the camera with a pan head on a video window;
A resizing process to change the display size of the video window;
A change amount detecting step of detecting a change amount of the display size of the video window changed by the size changing step;
A pan head position calculating step for calculating a pan head position for controlling the pan head unit from the amount of change detected in the change amount detecting step;
A pan head control method comprising: a pan head position control step of controlling the pan head portion based on the pan head position calculated in the pan head position calculating step.   2. The video display step according to claim 1, wherein the video display step divides a video window into a plurality of display areas, and displays video shot at a position corresponding to the pan head position in each display area. A pan head control method.   3. The pan head control method according to claim 2, wherein a previously displayed image is displayed in the display area that does not correspond to the pan head position. The head position calculating step calculates a plurality of head positions according to the display size of the video window,
4. The cloud according to claim 1, wherein the pan head position control step controls the pan head unit in a predetermined order based on a plurality of pan head positions calculated in the pan head position calculating step. 5. Stand control method. The size changing step detects an instruction to change the display size of the video window,
The change amount detection step determines a direction of the change amount according to a detection result of the change instruction,
5. The pan head control method according to claim 1, wherein the pan head position control step determines an order of controlling the pan head unit based on the pan head position in accordance with the direction of the change amount. . A pan head control device for controlling a pan head portion of a camera with a pan head,
Video display means for displaying video data output from the camera with pan head on a video window;
Resizing means for changing the display size of the video window;
A change amount detecting means for detecting a change amount of the display size of the video window changed by the size changing means;
A pan head position calculating unit for calculating a pan head position for controlling the pan head unit from a change amount detected by the change amount detecting unit;
A pan head control device comprising pan head position control means for controlling the pan head unit based on the pan head position calculated by the pan head position calculating means.   The video display means divides a video window into a plurality of display areas, and displays video shot at a position corresponding to the pan head position in each display area. Pan head control device.   8. The pan head control apparatus according to claim 7, wherein a previously displayed image is displayed in the display area not corresponding to the pan head position. The head position calculating means calculates a plurality of head positions according to the display size of the video window,
9. The cloud according to claim 6, wherein the pan head position control unit controls the pan head unit in a predetermined order based on a plurality of pan head positions calculated by the pan head position calculating unit. Stand control device. The size changing means detects an instruction to change the display size of the video window,
The change amount detection means determines a direction of the change amount according to a detection result of the change instruction,
10. The pan head control apparatus according to claim 6, wherein the pan head position control unit determines an order of controlling the pan head unit based on the pan head position in accordance with a direction of the amount of change. . A program for causing a computer to control the pan head of a camera with a pan head,
A video display step of displaying video data output from the camera with a pan head on a video window;
A resizing step to change the display size of the video window;
A change amount detecting step of detecting a change amount of the display size of the video window changed by the size changing step;
A camera platform position calculating step for calculating a camera platform position for controlling the camera platform from the amount of change detected in the change detection step;
A program for causing a computer to execute a pan head position control step for controlling the pan head unit based on the pan head position calculated in the pan head position calculating step. A network camera system in which a camera with a pan head unit and a pan head control device that remotely controls the pan head unit are connected via a network,
Video display means for receiving video data output from the camera with pan head and displaying it on a video window;
Resizing means for changing the display size of the video window;
A change amount detecting means for detecting a change amount of the display size of the video window changed by the size changing means;
A pan head position calculating unit for calculating a pan head position for controlling the pan head unit from a change amount detected by the change amount detecting unit;
A network camera system comprising: a pan head position control unit that controls the pan head unit based on the pan head position calculated by the pan head position calculating unit.

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