JP2019129466A - Video display device - Google Patents

Abstract

To reduce a time from when a user specifies a cut-out area on a video display device until the cut-out video is delivered to the video display device and displayed in cut-out delivery of a recorded video.SOLUTION: A video display device includes a first request means for requesting a recorded video to a video transmission device, a designation means for designating a cutout region of the whole or a part of the recorded video, a second request means for requesting the video transmission device for the recorded video designated by the designation means, a recorded video receiving means for receiving the recorded video distributed by the first and second request means, and a recorded video display means for displaying the video of the recorded video receiving means, and in a case in which the recorded video requested by the first request means is displayed by the recorded video display means, the video is switched when the recorded video requested by the second request means is received by the recorded video receiving means.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a video display device, and reduces the time until a cut-out video of a recorded video is displayed.

  Conventionally, a surveillance camera has a function of distributing to a network a video obtained by cutting out a partial area within the angle of view from a video of the entire angle of view (hereinafter referred to as a whole video). On the other hand, the video display device has a function of receiving and displaying the entire video and the cut video. The user can request the surveillance camera to cut out the video of the area by specifying the cutout area on the entire video displayed on the video display device. The total size of the data to be distributed tends to be smaller as the total area of the video distributed by the monitoring camera is smaller for the video clipped from the entire video of the same scene and the same image quality. Often used for the purpose of reducing Therefore, the video clip distribution function of the surveillance camera is used not only for live distribution but also for recording distribution.

  In Patent Document 1, a monitoring camera generates high-quality and low-quality video data from the same video signal at the time of imaging, and records both the video data in a recording device. Disclosed is a technique for distributing low-quality video data when recording and viewing, and switching the video data to be distributed from high-quality video data when a user requests a cut-out video. .

JP, 2016-58994, A

  However, when segmenting and distributing from the entire video recorded on the recording device of the surveillance camera, the video recorded on the recording device is generally encoded. Perform, re-encode and deliver to the network. Therefore, there is a problem that it takes time until the clipped video is distributed and displayed on the video display device after the user specifies the clip region on the video display device.

  Therefore, an object of the present invention is to shorten the time until a cut-out video of a recorded video is displayed on the video display device.

In order to achieve the above object, a video display apparatus according to the present invention is:
First request means for requesting the recorded video to the video transmission device;
A designation means for designating a cutout region of the whole or a part of the recorded video;
Second request means for requesting the video transmission device for the recorded video designated by the designation means;
Recorded video receiving means for receiving the recorded video distributed by the first and second request means;
Recorded video display means for displaying the video of the recorded video receiving means;
When the recorded video requested by the first request unit is displayed on the recorded video display unit, the recorded video requested by the second request unit is received by the recorded video reception unit. It is characterized by switching video.

  With the video display device according to the present invention, it is possible to shorten the time from when the user specifies a cutout area on the video display device until the cutout video is displayed.

1 is a network configuration diagram including a configuration of a video display device according to an embodiment of the present invention. Functional block diagram and system configuration diagram of surveillance camera and video display device according to embodiments of the present invention The figure which shows the camera control application GUI in the video display apparatus which concerns on embodiment of this invention. Coordinate system of whole video displayed on video display device according to embodiment of present invention and coordinate system of cutout region Flow of cut-out video display processing when a cut-out area is specified in the video display device according to the first embodiment of the present invention Flow of cut-out video display processing when a cut-out area is specified in the video display device according to the second embodiment of the present invention Processing flow of the monitoring camera when a cut video request command according to the second embodiment of the present invention is received

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  A network configuration according to an embodiment of the present invention will be described with reference to FIG.

  FIG. 1 is a system configuration diagram including a monitoring camera 1000.

  In FIG. 1, reference numeral 1100 denotes an image display apparatus according to the present invention. The monitoring camera 1000 and the video display device 1100 are connected in a mutually communicable state via the network 1200. The video display device 1100 transmits various commands to the monitoring camera 1000. The monitoring camera 1000 transmits responses to these commands to the video display device 1100.

  FIG. 2 is a functional block diagram and a system configuration diagram of the monitoring camera and the video display device according to the present embodiment.

  In FIG. 2, 1000 is a monitoring camera, 1100 is a video display device, and 12000 is a network. Reference numeral 1001 denotes an imaging unit, 1002 denotes an image processing unit, 1003 denotes a system control unit, 1004 denotes a recording unit, 1005 denotes a lens driving unit, 1006 denotes a lens control unit, and 1007 denotes a communication unit. The monitoring camera 1000 and the video display device 1100 are connected to each other via a network 1200 so that they can communicate with each other.

  With reference to FIG. 2, the configuration and function of each part of the monitoring camera 1000 will be described.

  The imaging unit 1001 includes a lens and an imaging element, and performs imaging of a subject and conversion into an electrical signal.

  The image processing unit 1002 performs predetermined image processing and compression encoding processing of the signals imaged and photoelectrically converted by the imaging unit 1001, and high-quality video data and a low-quality image whose resolution is lower than that of high-quality video data. Generate video data. In addition, the image processing unit 1002 performs a clipping process for a predetermined area when receiving a command for requesting a clipped video from the video display device 1100 in the distribution of live video.

  The system control unit 1003 analyzes the camera control command and performs processing according to the command. Mainly, when a command for requesting recording of a captured image is received from the image display device 1100, the recording unit 1004 records the high-quality and low-quality image data compression-encoded by the image processing unit 1002. . In addition, when a command for requesting cut-out video is received from the video display device 1100, the recorded video data stored in the recording unit is read, and the recorded video data is transmitted to the image processing unit 1002, and then the video processing unit 1002 is read. On the other hand, it commands the decompression process, cut-out process and compression encoding process of the recorded video data.

  The recording unit 1004 mainly stores video captured by the imaging unit 1001 as recorded video data. Also, when an instruction to take out a recorded video is given from the system control unit 1003, the recording unit 1004 transmits the recorded video to the system control unit 1003. The recorded video data is composed of high-quality and low-quality whole video data obtained by compression-coding the video captured by the imaging unit 1001 by the image processing unit 1002. The high quality whole video data is used as video data to be a cutout source of the cutout video, and the low image quality whole video data is used for specifying the whole area and the cutout region in the video display device. Distributing the low-quality overall video data to the video display device 1100 enables the band to be used more effectively than delivering the high-quality overall video data.

  The communication unit 1007 distributes video data to the video processing apparatus 1100 via the network 1200. Also, the communication unit 1007 receives various commands transmitted from the video display device 1100, and transmits them to the system control unit 1003. The command transmitted from the video display device 1100 includes a recording start request command, a recording stop request command, a live video request command, a recorded video request command, and a cutout video request command.

  Next, the configuration and function of each part of the video display device 1100 will be described with reference to FIG.

  Although a general-purpose computer such as a personal computer is typically used as the image display device 1100, a portable terminal such as a smartphone may be used.

  The communication unit 1101 receives various data distributed from the monitoring camera 1000. Various types of data mainly include data representing camera setting values and video data.

  The display unit 1102 uses a liquid crystal display device or the like and displays a graphic user interface (hereinafter referred to as GUI) for displaying an image acquired from the monitoring camera and controlling the camera.

  The system control unit 1103 generates a camera control command in accordance with the user's GUI operation, and transmits the camera control command to the monitoring camera 1000 via the communication unit 1101. The system control unit 1103 also displays on the display unit 1102 the video data from the monitoring camera 1000 received via the communication unit 1101.

  The input unit 1104 uses a keyboard, a pointing device such as a mouse, and the like, and the user of the video display apparatus operates the GUI via the input unit 1104. In the case of a portable terminal, a touch panel, various key buttons, and the like are used for the input unit 1004.

  As described above, the video display apparatus 1100 can perform acquisition of a captured video of the monitoring camera 1000 and various camera control via the network 1200.

  FIG. 3 is a view showing an example of the GUI of the camera control application of the video display apparatus according to the present embodiment.

  In FIG. 3, 2000 is a GUI before designating a cutout area, 2100 is a GUI after designating a cutout area, 2001 is a display section of a cutout video before designating a cutout area, 2101 is a display section of a cutout video after designating a cutout area, and 2002 is The display part of the whole video before specification of the cutout area, the display part 2102 of the whole video after specification of the cutout area, and 2103 a designation frame of the cutout area. The GUIs 2000 and 2100 are displayed on the display unit 1102 of the video display apparatus 1100 and operated through the input unit 1104.

  In the GUI 2000, the low-quality whole video distributed from the monitoring camera 1000 is displayed on the cut-out video display unit 2001 and the whole video display unit 2002 before the cut-out area is specified. When a cutout area specification frame 2103 is set on the entire video display unit 2002, the system control unit 1103 transmits a command for requesting cutout video of the specified cutout area to the monitoring camera 1000 via the communication unit 1101. To do.

  In the cut-out video display unit 2101, the position of the designated frame 2103 is cut out from the low-quality whole video received for display on the whole video display unit 2102 until the communication unit 1101 receives the cut-out video. Low quality video is enlarged.

  When the video clipped from the position of the clipping frame designation frame 2103 is transmitted from the monitoring camera 1000 to the system control unit 1103 via the communication unit 1101, the system control unit 1103 displays the display of the clipped video display unit 2101. It switches to the display of the cutout image received from the surveillance camera 1000.

  FIG. 4 is a view showing a coordinate system of a low quality whole video displayed on the whole video display unit 2002 of the video display device according to the present embodiment.

  In FIG. 4, 3000 is a low-quality whole image displayed on the whole image display unit 2002, 3001 is the origin coordinate of the whole image, 3002 is a cutout area designation frame designated on the whole image display unit 2002, and 3003 is a cutout area. Indicates the upper left point coordinates of the specified frame.

  The entire video 3000 is defined by an area having a horizontal width Wv and a vertical width Hv. The cutout area designation frame 3002 is set in an area in which the point coordinates 3003 in the entire video area is the upper left origin (Xv, Yv), the horizontal width is Wc, and the vertical width is Hc.

  When designating the cutout area, the system control unit 1103 sends the values of Wv, Hv, Xv, Yv, Wv, and Hc as numerical information related to the designated cutout area together with the command requesting the cutout video via the communication unit 1101. It transmits to the monitoring camera 1000. The communication unit 1007 of the monitoring camera 1000 receives the command requesting the cutout video and the numerical information, and transmits the numerical information to the image processing unit 1002 which performs the cutout processing of the recorded video via the system control unit 1003. The image processing unit 1002 cuts out a designated area from the high-quality whole video stored in the recording unit 1004 based on the numerical value information.

  The representation of the coordinate system of the entire image displayed on the image display device may be other than that described above.

  A flow of cutout video display processing at the time of cutout region specification in the video display device according to the embodiment of the present invention will be described with reference to FIG.

  In step S7000, the system control unit 1103 displays the low-quality whole video received from the monitoring camera 1000 on the cut-out video display unit 2001 and the whole video display unit 2002.

  In step S7001, the system control unit 1103 receives information related to the cutout area 2103 specified on the entire video display unit 2002, and transmits the information to the monitoring camera 1000 via the communication unit 1101 together with a command requesting the cutout video. .

  In step S7002, the system control unit 1103 cuts out the cutout area specified in S7001 from the low-quality whole video received for specifying the cutout area, and cuts out until the cutout video is received from the monitoring camera 1000. The image is enlarged and displayed on the display unit 2101 of the image. By the processing in S7002, the cut-out video is displayed on the cut-out video display unit 2001, and it is possible to shorten the time until transition to the state of 2101. However, since the designated area 2103 is cut out from the low-quality whole video in S7002, the cut-out video displayed on the display unit 2101 is a low-quality video.

  In step S7003, the system control unit 1103 determines whether the cutout image requested to the monitoring camera 1000 in S7001 has been received. If the cutout video has not been received, the process returns to step S7002, and if it has been received, the process proceeds to step S7004.

  In step S <b> 7004, the system control unit 1103 cuts out the received low-quality whole video and cuts out the cut-out video displayed on the cut-out video display unit 2101 into the cut-out video received from the cut-out video display unit 2101. Switch the display. By the processing in S7004, the cut-out video displayed on the display unit 2101 is improved in image quality.

  If the cutout area is changed after the cutout area is specified in the entire video display unit 2102 of the video display apparatus 1100, the process returns to S7001 to request the monitoring camera 1000 again for the cutout video. The monitoring camera 1000 receives the request command of the cutout video, interrupts the generation processing of the cutout video before the cutout area change, generates the cutout video after the cutout area change, and distributes the cutout video to the video display apparatus 1100 .

  As described above, in the first embodiment, the entire image display device side is specified on the video display device side after the cutout region is specified by the video display device and distributed from the monitoring camera. Display the video clipped from the video. As a result, it is possible to shorten the time from when the user specifies the cutout area on the video display device until the cutout video is displayed.

  In the first embodiment, the cut-out video displayed on the cut-out video display unit 2101 is cut out from the low-quality whole video received to be displayed on the whole video display unit 2102 and enlarged until the cut-out video is received. It is a picture. Therefore, the clipped video displayed in an enlarged manner on the clipped video display unit 2101 has low image quality. In the second embodiment of the present invention, the time to cut out from the low-quality whole video and specify the cutout area to be enlarged and displayed on the display unit 2101 is shortened.

  Referring to FIG. 6, according to the second embodiment of the present invention, high-quality whole video is distributed from monitoring camera 1000 only when video display device 1100 issues a request command for cutout video to monitoring camera 1000. The processing flow of the video display apparatus in the case where the cutout area is cut out from the entire high-quality video and displayed until the cutout video is distributed from the monitoring camera 1000 will be described. Description of the same parts as those of the first embodiment will be omitted.

  In step S8000, the system control unit 1103 displays the low-quality whole video received from the monitoring camera 1000 on the cut-out video display unit 2001 and the whole video display unit 2002.

  In step S8001, the system control unit 1103 receives information related to the cutout area 2103 specified on the entire video display unit 2102 and transmits the information to the monitoring camera 1000 via the communication unit 1101 together with a command requesting the cutout video. . The monitoring camera 1000 receives the cut-out video request command, and determines whether or not to switch the low-quality whole video image being distributed to the distribution of the high-quality whole video image. Detailed processing of the monitoring camera will be described later with reference to FIG.

  In step S8002, the system control unit 1103 cuts out the cutout area specified in S8001 from the low-quality entire video received for specifying the cutout area, and displays the cutout area on the display unit 2101 of the cutout video.

  In step S8003, the system control unit 1103 determines whether a high-quality whole video has been received. If the high-quality cut-out video has not been received, the process advances to step S8004, and if received, the process advances to step S8005.

  If the high-quality cut-out video has not been received, the system control unit 1103 determines in step S8004 whether or not the cut-out video requested for the monitoring camera 1000 in S8001 has been received. If the cutout video has not been received, the process returns to step S8003, and if it has been received, the process proceeds to step S8007.

  If a high-quality clipped video is received, in step S8005, the system control unit 1103 cuts out the entire low-quality video and receives the high-quality video received from the clipped video displayed on the clipped video display unit 2101. The display of the cut-out video display unit 2101 is switched to the cut-out video cut out from the entire video. At this time, the low quality whole video displayed on the full video display unit 2102 is also switched to the high quality whole video.

  In step S8006, the system control unit 1103 determines whether the cutout image requested to the monitoring camera 1000 in S8001 has been received. If the clipped video has been received, the process proceeds to step S8007.

  In step S8007, the system control unit 1103 cuts out the received low-quality or high-quality whole video, and cuts the cut-out video from the cut-out video displayed on the cut-out video display unit 2101 to the received cut-out video. The display of the display unit 2101 is switched. At the time of delivery of cutout video, the monitoring camera 1000 stops delivery of high quality whole video and switches to delivery of low quality whole video. Therefore, the system control unit 1103 switches the whole video displayed on the whole video display unit 2102 from the high-quality whole video to the low-quality whole video.

  A processing flow of the monitoring camera 1000 at the time of receiving the request command of the cutout image according to the second embodiment of the present invention will be described with reference to FIG.

  In step S9000, the system control unit 1003 receives a cut video request command from the video display device 1100.

  In step S9001, the system control unit 1003 extracts a recorded video from the recording unit 1004, and starts generating a cut-out video based on the received cut-out area information.

  In step S9002, the system control unit 1003 calculates the time required for generating the cutout video from the size of the received cutout area, and compares the time required for generating the cutout video with the time required for distributing the high-quality whole video. If the time required to generate the cutout video is larger, the process advances to step S9003. If the time required to distribute the high-quality whole video is larger, the process advances to step S9005.

  In step S9003, the system control unit 1003 stops the delivery of the low-quality whole video, extracts the high-quality whole video recorded in the recording unit 1004, and distributes the high-quality whole video to the video recording apparatus 1100.

  In step S9004, the system control unit 1003 determines whether the generation of the cutout image whose generation has been started in step S9001 is completed. If the generation is complete, the process advances to step S9007.

  In step S <b> 9005, the system control unit 1003 takes out the entire low-quality video recorded in the recording unit 1004 and distributes it to the video recording device 1100.

  In step S9006, the system control unit 1003 determines whether the generation of the cutout image whose generation has been started in step S9001 is completed. If the generation is complete, the process advances to step S9007.

  In step S9007, the system control unit 1003 distributes the cut-out video whose generation has been completed to the video display apparatus 1100. At this time, in the case where the high quality whole video is being distributed to the video display device 1100, the monitoring camera 1000 stops the distribution of the high quality whole video and switches to the distribution of low quality whole video.

  As described above, in the second embodiment, in addition to the effects of the first embodiment, after designating the cutout region as compared with the first embodiment, the display unit 2101 is cut out from the low-quality whole image. The time to zoom in is reduced.

  The present invention can also be realized by executing the following processing. That is, software (program) for realizing the functions of the above-described embodiment is supplied to a system or apparatus via a network or various storage media, and a computer (or CPU, MPU or the like) of the system or apparatus reads the program. It is a process to be executed. The present invention can also be realized by a plurality of processors cooperating to perform processing.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to these embodiment, A various deformation | transformation and change are possible within the range of the summary.

1000 surveillance camera, 1100 video display device, 1200 network,
2000 Camera control application GUI for video display device

Claims (5)

First request means for requesting the recorded video to the video transmission device;
A designation means for designating a cutout region of the whole or a part of the recorded video;
Second request means for requesting the video transmission device for the recorded video designated by the designation means;
Recorded video receiving means for receiving the recorded video distributed by the first and second request means;
Recorded video display means for displaying the video of the recorded video receiving means;
When the recorded video requested by the first request unit is displayed on the recorded video display unit, the recorded video requested by the second request unit is received by the recorded video reception unit. A video display device characterized by switching video. The said video recording image display means is expanded and displayed the area | region of the said logging area | region of the video recording requested | required by the said 1st request means, when the cutting out area | region is designated by the said designation means. Video display device. When the recorded video of the first request means is received by the recorded video receiving means, the recorded video display means receives at least one of the resolution, data size, and bit rate of the recorded video received by the recorded video receiving means. The image display apparatus according to claim 1, wherein the cutout area is enlarged and displayed even when the image becomes a high quality image. A system comprising a video display device and a video transmission device,
First request means for requesting a recorded video to the video transmission device;
A designation means for designating a cutout region of the whole or a part of the recorded video;
Second request means for requesting the video transmission device for the recorded video designated by the designation means;
Recorded video receiving means for receiving the recorded video distributed by the first and second request means;
Recorded video display means for displaying the video of the recorded video receiving means;
When the recorded video requested by the first request unit is displayed on the recorded video display unit, the recorded video requested by the second request unit is received by the recorded video reception unit. It is characterized by switching images,
The video transmission device is
Video recording means for recording high-quality video and low-quality video on a recording medium at the time of imaging;
Receiving means for receiving a request for a recorded video and a clipped video from the video display device;
It has video distribution means for extracting the low-quality recorded video from the recording medium and distributing it to the video display device.
The video distribution means compares the time required for video cutting out of the required area with the time required for video distribution of high-quality recorded video, and if the time required for video cutting out is larger, the video is lower until the video is generated. Stop distribution of high-quality recorded video, distribute high-quality recorded video, and after generating cut-out video, stop distribution of high-quality recorded video, and distribute low-quality recorded video and cut-out video A system characterized by A first requesting step for requesting the recorded video from the video transmitting device;
A designation step for designating a cutout region of the whole or a part of the recorded video;
A second requesting step for requesting the video transmission device for the recorded video designated by the designation means;
A recorded video reception step of receiving a recorded video distributed by the first and second request means;
A recorded video display step for displaying the video of the recorded video receiving means;
A step of switching a video when the video recording request requested by the second request means is received by the video reception receiving means when the video recording request requested by the first request means is displayed on the video recording display means When,
A program characterized by comprising: