JP2010028401A - Monitoring camera system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To correct inclination of video by means of camera installation angles and rotation of camera lenses on the side of an operation device in a monitoring camera system having the operation device which performs multi-screen display to a plurality of cameras and a recorder which records video of the cameras via a network. <P>SOLUTION: The monitoring camera system includes: an input terminal which inputs video rotation information on each camera; a database which records the video rotation information on each camera; a number of pixel conversion operation part which converts the number of pixels based on the video rotation information on each camera recorded in the database to video data on each camera to be input from the recorder; and a display part which performs the multi-screen display of video signals whose number of pixels is converted in an operation part. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a monitoring camera system that monitors video information captured by a plurality of cameras through a network.

  In financial institutions such as banks and post offices, surveillance camera systems have been introduced that install surveillance cameras at important points in the building and display captured images on a display device to check for suspicious individuals. Yes. In particular, in recent years, network monitoring systems that display captured images on a multi-screen image on a display device via a network have been widespread (see, for example, Patent Document 1).

  On the other hand, the upper, lower, left, and right directions of the camera image displayed on the display device are determined by the direction in which the camera is facing, and the displayed image is displayed in a rotated state depending on the installation state of the camera. For example, an image of a camera installed in a landscape orientation is displayed in a landscape orientation and requires an operation of looking at the neck. In a digital still camera, a technique in which a pixel number conversion unit is provided between a camera unit and a recording unit is known in order to record an image which is recorded in the portrait orientation and is turned horizontally to be an upright image (for example, Patent Document 2). reference).

Japanese Patent Laid-Open No. 2005-129999 Japanese Patent Laid-Open No. 10-285452

  Even in a surveillance camera system using multiple cameras, the displayed image is displayed in a rotated state depending on the installation status of the camera. In particular, in a network surveillance system that displays multi-screen images, some screen areas are displayed horizontally. When displayed, it is not possible to tilt only the small screen area, and there is a concern that the determination of whether or not there is a problem in the screen area may be delayed. Also, depending on the installation status of the camera, the displayed video is not always landscape, but may be a tilted image.

  The technology for erecting an image by a pixel number conversion unit known in the digital still camera and the like taken up in the background art is for a rotation angle of 90 °, and the inclination of the image changes depending on the installation situation of the camera Is not effective.

  On the other hand, it is also required that all the multi-screens of the display device that performs multi-screen image display be erect images by using the already installed surveillance cameras as they are.

  In view of the above, an object of the present invention is to realize a monitoring system in which the display of a camera is properly erect and the detection reliability of a suspicious person or the like is high.

  In order to solve the above-described problems, the present invention uses the configuration described in the claims as an example.

  ADVANTAGE OF THE INVENTION According to this invention, the display of a camera can be made into an erect image appropriately, and it becomes possible to implement | achieve the monitoring system with high detection reliability, such as a suspicious person.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an embodiment of the surveillance camera system according to the present invention.

This surveillance camera system includes a plurality of cameras 01 to 0n, a recording device 21 connected to the plurality of cameras 01 to 0n to record video information of each camera, and a plurality of cameras 01 to 0n via the recording device 21 and the network 100. It is comprised with the operating device 30 which displays the image | video of multiscreen.
The plurality of cameras 01 to 0n input the subject images 11 to 1n in each monitoring area to the recording device 21 as video signals of the respective cameras through an optical system and an image sensor incorporated in each camera.

  The recording device 21 encodes a video signal of each camera, an encoder 22 that creates video information in which management information such as channel information of each camera and shooting date / time is included in a header portion of each encoded camera video signal, and video Recording unit 23 for recording encoded video information to store information, encoder 22 or temporary recording unit 25 for temporarily recording video information output from recording unit 23, video of each camera of temporary recording unit 25 A communication unit 24 that transmits data to the controller device 30 via the network 100 is provided.

  Although FIG. 1 shows an example in which one recording device 21 and one operation device 30 are connected to the network 100 one by one, a plurality of devices may be connected to each other.

  When the video information requested from the operation device 30 to the recording device 21 is a real-time video, the video information encoded by the encoder 22 is temporarily recorded after the real-time video request is received by the communication unit 24 of the recording device 21. The data is stored in the unit 25 and then sent to the communication unit 24.

  When the video information requested from the operation device 30 to the recording device 21 is video information recorded in the recording unit 23, the video information is read from the recording unit 23 and temporarily stored in the temporary recording unit 25, and then communicated. Sent to the unit 24.

  The video information transmitted to the communication unit 24 is transmitted to the operation device 30 via the network 100.

  The operating device 30 includes a communication unit 31 that receives video information of each camera via the network 100, an input terminal 32 that allows a user to operate multi-screen display content using a keyboard, a mouse, and the like, and a user inputs from the input terminal 32. A database (DB) 37 for recording channel information of each camera and a rotation angle of the video signal, a decoder 33 for decoding the video information encoded by the encoder 22, and a database (DB) 37 for the video information decoded by the decoder 33 A pixel number conversion calculation unit 34 that performs pixel number conversion based on the rotation angle of each camera image recorded in the camera, a layout setting unit 35 that sets a layout of an image display area of a video signal of each camera that has undergone pixel number conversion, A display unit 36 for displaying the video after layout setting on a multi-screen is provided.

  The user arbitrarily selects video information to be displayed by tilting the display unit 36 among the plurality of cameras 11 to 1n using the input terminal 32, and presets how much the video is tilted when displaying each selected video. . Settings such as how much the image of the camera is enlarged / reduced and how to trim the image are set at the same time. These settings are stored in a database (DB) 37.

  The pixel number conversion calculation unit 34 performs video rotation processing based on the rotation angle of each camera video recorded in the database (DB) 37. The video rotation processing method includes an image such as affine transformation. There is a processing method.

The layout setting in the layout setting unit 35 is performed by inputting the number of videos simultaneously displayed on the display unit 36 and the size / position of the display area of each video from the input terminal 32 while the user looks at the display unit 36. . The set contents are stored in a database (DB) 37.
Display examples 38 and 39 are examples in which the images of some cameras are rotated on the display unit 36 to perform multi-screen display.

  Although not shown for convenience of explanation, both the recording device 21 and the operation device 30 may have a control unit to control the entire device. This is because having the control unit may be advantageous in that the control of the entire apparatus is simplified.

  An example in which an image is rotated by the installation method of the surveillance camera will be described with reference to FIG. 2, and an example in which an image is rotated by the installation location of the surveillance camera will be described with reference to FIG.

  FIG. 2 shows a case where there are a person 52 standing upright in front of a device 51 such as an ATM and a person 53 sitting in a wheelchair, and the camera 04 installed in the device 51 is photographing the front of the device 51. FIG.

  Assuming that the person 52 and the person 53 are arranged side by side in front of the apparatus 51, when the camera 04 is installed upright or tilted, the video of the camera 04 is like the video 14. .

  The image 14 shows that when the camera 04 is upright, only the face of one person 52 is projected. By rotating the lens unit of the camera 04 by 90 degrees, both faces of the person 52 and the person 53 are shown. It shows that it will be projected, but it will be a sleeping image.

  FIG. 3 is a view when the camera is installed at an angle. A camera 05 is installed on a non-vertical wall 61, and the camera 05 projects an image 15. The video 15 indicates that the person 62 photographed by the camera 05 is projected at an angle.

  As a method of setting the rotation angle in which the image lying on the side of the camera 04 and the image 15 tilted by the camera 05 is an upright image, when the camera is installed as shown in FIG. A method of directly specifying the rotation angle from the input terminal 32 of the device 30 is performed, and when it is difficult to determine the tilt of the camera as shown in FIG. 3, the rotation angle is set at the input terminal 32 of the operation device 30 while viewing the displayed image. There is a method to adjust.

  It is assumed that the user selects which method is used to specify the rotation angle.

  A layout example displayed on the display unit 36 is shown in FIG.

  The display area of the display unit 36 is divided into vertical and horizontal i × j, and an area of k × l (k ≦ i, l ≦ j) is assigned as a display area to one video. ~ 83 are shown. The display example 38 in FIG. 1 is an example in which the image is divided into 2 × 2 in the vertical and horizontal directions, and one image is displayed in one divided region (1 × 1 region).

  Further, there is a method of assigning a display area of an arbitrary size to one video and arranging it at an arbitrary position on the display unit 36 as in the layout 84. A display example 39 in FIG. 1 is this example.

  FIG. 5 shows a display example of the video for the display area allocated in the layout.

  In the video display examples 91 to 93 in FIG. 5, the background white frame is the video area, and the thick line frame is the video display area.

  The video display example 91 is an example in which the video area and the video display area have the same size and are arranged so that the entire video area is displayed.

  The video display example 92 is an example in which the video area and the video display area are different in size, and the video area is all displayed, and a portion of the video display area where the video area is not displayed is arranged so as to be filled or transparent.

  The video display example 93 is an example in which a video area to be displayed is cut out and arranged so that a color is painted or transmitted if there is a portion in which no video is displayed in the video display area.

  Next, FIG. 6 shows a flowchart showing a flow when performing multi-screen display control including rotation control of the camera video in the surveillance camera system shown in FIG.

  First, in step 201, the layout of the video display area shown in FIG. 4 is set on the screen of the display unit 36 based on the input information from the input terminal 32 of the controller device 30.

  In step 202, the camera corresponding to each video display area of the layout displayed on the screen of the display unit 36 and the rotation information of the camera video are assigned based on the input information from the input terminal 32. If the camera corresponding to each video display area of the displayed layout and the rotation information of the camera video are to be held, they are recorded in the database (DB) 37. If the database (DB) 37 stores in advance camera settings to be displayed in each video display area of the layout and rotation information of the camera video, the setting contents are read from the database (DB) and correspond to each display area. Check if the rotation information of the camera image has been changed.

  In step 203, the rotation setting information of the designated camera image is read from the database (DB) 37.

  In step 204, the recording device 21 is sequentially requested for video information of the camera to be displayed in each video display area of the layout.

  In step 205, in response to a request from the operating device 30 to the recording device 21, video information is sequentially transmitted from the recording device 21 to the operating device 30, and the video of the camera displayed on each video display area of the layout by the operating device 30. Receive information sequentially.

  In step 206, the video information received by the decoder 33 is decoded.

  In step 207, the camera information is read from the header of the received video data to determine which camera is the video.

In step 208, based on the camera information determined in step 207 and the rotation information of each camera read in 203, it is determined whether or not to rotate the decoded video signal.
If it is set to rotate the video signal decoded in the rotation information, the process proceeds to step 209. If it is set not to rotate, the process proceeds to step 210.

  In step 209, the pixel number conversion calculation unit 34 calculates the pixel number conversion associated with the rotation processing of the video based on the rotation information of each camera, performs the rotation processing of the decoded video signal, and then proceeds to step 210. .

  In step 210, the rotation-processed video signal is sequentially recorded in the video display area corresponding to each camera of the multi-screen display layout in the memory in the display unit 36, and the recorded rotation-processed video signal of each camera is recorded. Based on the multi-screen display.

  In step 211, it is determined whether or not to change the rotation angle of some of the camera images displayed on the multi-screen. If it is necessary to change the rotation angle of some of the camera images, the process proceeds to step 212. If it is not necessary to change the rotation angle of the camera image, the process returns to step 210.

  In step 212, the camera rotation angle setting is corrected, and the process returns to step 203.

  Further, the video recorded in the recording device 21 is downloaded to the operation device 30 and recorded in the database (DB) 37, and the display unit is based on the video data of each camera and the rotation angle information recorded in the database (DB) 37. It is also possible to perform multi-screen display. In the multi-screen display operation in this case, the video to be displayed is read from the database DB in step 204 and step 205 in the flowchart of FIG. After that, the video is displayed in the same manner as described above.

  The preferred embodiments of the present invention have been described above. According to the present invention, in a network monitoring camera system that displays video information captured by a plurality of cameras on a multi-screen, regardless of the installation status of each camera, the entire area screen is displayed on the operation unit side where the monitor is present. Can be displayed on a multi-screen, and a network monitoring system with high detection reliability for a suspicious person or the like can be realized.

1 is a configuration block diagram showing an embodiment of a surveillance camera system according to the present invention. The figure which shows the example which the image | video by the direction which installs a camera rotates. The figure which shows the example where the image | video by inclining a camera and installing is inclined. The figure which shows the example of a layout displayed on the display part. The figure which shows the example which displays an image | video in the display area allocated to each image | video. The operation | movement flowchart which added the image | video rotation control in the surveillance camera system of this invention.

Explanation of symbols

01, 02, 03, 04, 05, 0n Camera 11, 12, 13, 14, 15, 1n Subject video 21 Recording device 22 Encoder 23 Recording unit 24 Temporary recording unit 24, 31 Communication unit 30 Operating device 32 Input terminal 33 Decoder 34 pixel number conversion calculation unit 35 layout setting unit 36 display unit 37 database (DB)
100 Network 38, 39, 63, 91, 92, 93 Video 81, 82, 83, 84 Layout Displayed on Display 36

Claims (3)

Multiple cameras that acquire video signals;
A recording device for recording video signals of each camera and management information of each camera as video information of the plurality of cameras;
A surveillance camera system having an operation device,
The management information of each camera has camera channel information of each camera,
The operating device includes a display unit, an input terminal, a database, and a pixel number conversion calculation unit,
The input terminal sets a display area of a video signal of each camera in the display unit,
The database records the rotation information of the video signal of each camera based on the input of the input terminal,
The pixel number conversion calculation unit selects rotation information of the video signal of each camera based on the camera channel information of each camera, converts the video information to the number of pixels,
The display unit displays a video signal of each camera output from the pixel number conversion calculation unit on a multi-screen. The surveillance camera system according to claim 1,
The surveillance camera system, wherein the rotation information is given to the pixel number conversion calculation unit based on an input of the input terminal for video signals of each camera displayed on the display unit in multiple screens. The surveillance camera system according to claim 1 or 2,
The recording apparatus includes an encoder, a temporary recording unit, a recording unit, and a first communication unit,
The operating device has a decoder and a second communication unit,
The recording device and the operating device are connected by the first and second communication means,
When performing real-time display, the video signal of each camera and each camera channel information encoded by the encoder are stored as video information in the temporary recording unit, and then transmitted from the first communication unit to the operation device. ,
When displaying a recorded video, the video information of the recording device is transmitted from the first communication unit to the operating device,
After the video information is received by the second communication means of the operating device, the video information is decoded by the decoder and displayed on the display unit.

Images