KR101634558B1 - Method and apparatus for playing multi-angle video - Google Patents

Method and apparatus for playing multi-angle video Download PDF

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Publication number
KR101634558B1
KR101634558B1 KR1020150070198A KR20150070198A KR101634558B1 KR 101634558 B1 KR101634558 B1 KR 101634558B1 KR 1020150070198 A KR1020150070198 A KR 1020150070198A KR 20150070198 A KR20150070198 A KR 20150070198A KR 101634558 B1 KR101634558 B1 KR 101634558B1
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South Korea
Prior art keywords
image
viewpoint image
viewpoint
angle
pes
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KR1020150070198A
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Korean (ko)
Inventor
남영진
류내원
양용석
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네오컨버전스 주식회사
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4383—Accessing a communication channel
    • H04N21/4384—Accessing a communication channel involving operations to reduce the access time, e.g. fast-tuning for reducing channel switching latency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
    • H04N21/4307—Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4383—Accessing a communication channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4385—Multiplex stream processing, e.g. multiplex stream decrypting

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

The present invention relates to a method and an apparatus for playing a multi-angle image. The method for playing a multi-angle image according to an embodiment of the present invention is a playback method of a multi-angle image which plays back at least two viewpoint images and comprises the steps of: receiving respective meta information for at least two viewpoint images; receiving respective packetized elementary streams (PES) for the at least two viewpoint images and buffering the respective PES; checking PES times for the respective viewpoint images; decoding, when an output command for a first viewpoint image is received, the first viewpoint image; outputting the first viewpoint image; synchronizing, when an output command for a second viewpoint image is received, the PES time of the first viewpoint image with the PES time of the second viewpoint image; and decoding the second viewpoint image. According to the present invention, a multi-angle image can be played back efficiently.

Description

TECHNICAL FIELD [0001] The present invention relates to a multi-

The present invention relates to a multi-angle image reproducing method and apparatus.

VOD (Video on Demand) service is a two-way service that can receive desired contents at a desired time according to a subscriber's request rather than receiving a program unilaterally from a public network broadcast or cable TV.

Such a VOD service can play, stop, pause, fast forward, fast rewind, and rewind in the same manner as a general video device, except that video information is ordered through a communication network. And provides all functions for reproducing at an arbitrary position.

Recently, this multi-angle video service, VOD service, is expected to be used for telemedicine, remote education, home banking, home shopping, and telecommuting in addition to replacing existing TV and VCR.

Korean Patent Registration No. 1516996 (Apr. 27, 2015) discloses a video transmitting method for transmitting video from a terminal to a display device and a video receiving and playing method for receiving and reproducing video transmitted by the video transmitting method, There is provided a video transmitting method and a video receiving and reproducing method capable of reducing latency in transmitting an image and transmitting output video data to a display device in accordance with a resolution of a display device, Lt; / RTI >

However, in connection with the VOD service, conventionally, when the user switches the VOD from one viewpoint to another viewpoint, the video does not come out immediately after starting from the beginning or from the viewpoint even if the video continues, There was a problem.

SUMMARY OF THE INVENTION The present invention provides a multi-angle image reproducing method and apparatus for efficiently reproducing a multi-angle image.

A method of reproducing a multi-angle image according to an exemplary embodiment of the present invention is a method of reproducing a multi-angle image reproducing apparatus for reproducing at least two view images, the method comprising: receiving each meta information of the at least two view images A step of receiving each of the PESs for the at least two viewpoint images and performing buffering of each PES, checking a PES time of each viewpoint image, receiving a first viewpoint image output command, Decoding the viewpoint image, outputting the first viewpoint image, and receiving an output command of the second viewpoint image, using the PES time of the first viewpoint image and the PES time of the second viewpoint image Performing synchronization, and decoding the second viewpoint image.

Wherein the meta information includes meta information of the first viewpoint image and meta information of the second viewpoint image and meta information of the first viewpoint image and meta information of the second viewpoint image are received as respective data do.

And the PES time includes representation time designation information and decoding time designation information.

In accordance with another aspect of the present invention, there is provided a method of reproducing a multi-angle image reproducing apparatus for reproducing at least two view images, the method comprising: receiving meta information about the at least two view images; The method comprising the steps of: receiving a transport stream including at least two viewpoint images; buffering each of the viewpoint images by the same packet ID; checking a PES time of each viewpoint image; Decoding the first viewpoint image, outputting the first viewpoint image, and receiving an output command of the second viewpoint image, the PES time of the first viewpoint image and the second viewpoint image of the second viewpoint image, Performing synchronization using the PES time of an image, and decoding the second view image.

Wherein the meta information includes meta information of the first viewpoint image and meta information of the second viewpoint image and meta information of the first viewpoint image and meta information of the second viewpoint image are received as one data do.

A multi-angle image reproducing apparatus according to an embodiment of the present invention includes a reception buffering unit for receiving and buffering a viewpoint image, a time check and synchronization unit for checking time of the viewpoint image, performing a synchronization, And a control unit for controlling the image decoding unit to decode the first viewpoint image upon receiving an output command of the first viewpoint image, wherein when the control unit receives an output command of the second viewpoint image, And the checking and synchronizing unit performs synchronization using the PES time of the first viewpoint image and the PES time of the second viewpoint image.

Wherein the reception buffering unit receives each meta information of at least two view images and receives each PES of the at least two view images to perform buffering of each of the at least two view images.

A multi-angle image reproducing apparatus according to another exemplary embodiment of the present invention includes a reception buffering unit for receiving and buffering a transport stream including at least two viewpoint images, checking time of the viewpoint image, and performing synchronization And a control unit for controlling the video decoding unit to decode the first viewpoint image upon receipt of an output command of the first viewpoint video, The time check and synchronization unit performs synchronization using the PES time of the first view image and the PES time of the second view image when the output command of the image is received.

And the reception buffering unit performs buffering of the view image by the same packet ID.

The multi-angle image reproducing method and apparatus according to the embodiment of the present invention has the following effects.

First, the present invention has the effect of reducing the time delay in the reproduction of the image, by rapidly switching from one image to another image in a multi-angle image.

Second, the present invention performs buffering of images at different time points while reproducing an image at one time point, and synchronizes with time information. Thus, at the time of switching to an image at another time point, The video of another point of time is reproduced.

1 is a view for explaining a multi-angle image reproducing apparatus according to an embodiment of the present invention.
2 is a flowchart illustrating a method of reproducing a multi-angle image according to an exemplary embodiment of the present invention.
3 is a flowchart illustrating a method for reproducing a multi-angle image according to another embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. However, it is to be understood that the present invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It is intended that the disclosure of the present invention be limited only by the terms of the appended claims.

Also, terms used herein are for the purpose of illustrating embodiments and are not intended to limit the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. &Quot; comprises "and / or" comprising "used in the specification do not exclude the presence or addition of components other than the components mentioned. Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs.

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

In the present invention, a " PES " (Packetized Elementary Stream) refers to a packetized video and audio data stream of an image. For example, the PES of the first viewpoint image is a packetized video and audio data stream of an image at an arbitrary first viewpoint, and the PES of the second viewpoint image is a packetized It is a data stream of video and audio.

In the present invention, " view image " means an image generated through each camera at at least two viewpoints of one image content. For example, when one image content is photographed with two cameras in one image content, a first view image and a second view image are generated, and when one image content is photographed with three cameras, The second view image, and the third view image are generated.

In the present invention, " multi-angle image " means an image including at least two viewpoint images.

The present invention can be applied to reproducing a multi-angle image including at least two viewpoint images.

1 is a view for explaining a multi-angle image reproducing apparatus according to an embodiment of the present invention.

1, a multi-angle image reproducing apparatus 2 according to an embodiment of the present invention includes a reception buffering unit 21, a time check and synchronization unit 22, an image decoding unit 23, a video output unit 24, and a control unit 25.

The multi-angle image reproducing apparatus 2 receives the multi-angle image from the server.

Hereinafter, the case where the multi-angle image is two view-point images acquired from two angles, and the multi-angle image includes the first viewpoint image and the second viewpoint image will be described.

In the first embodiment, the meta information of the first viewpoint image is the first viewpoint image meta information, and the meta information of the second viewpoint image is referred to as the second viewpoint image meta information, Angle view image meta information to the multi-angle image playback device 2. [ In this case, the first view image meta information includes a first view image address (e.g., a first view image URL address), the second view image meta information includes a second view image address (e.g., Video URL address).

In addition, the server transmits each PES for at least two view images to the multi-angle image playback device 2. [ For example, the server transmits the PES of the first viewpoint image and the PES of the second viewpoint image to the multi-angle view playback apparatus 2, respectively.

In the second embodiment, the server can name the meta information including the meta information of the first view image and the second view image as integrated meta information, and the server transmits the integrated meta information to the multi-angle image playback apparatus 2 . At this time, the integrated meta information includes one address (for example, a multi-angle image URL address) of the multi-angle image including the first view image and the second view image.

The reception buffering unit 21 is a unit for receiving a buffered image transmitted from the server and performing buffering.

In the case of the first embodiment, the reception buffering unit 21 receives each PES for at least two view images and performs buffering.

For example, when a multi-angle image is two view-point images acquired from two angles and includes a first viewpoint image and a second viewpoint image, the first data including the information of the first viewpoint image and the second viewpoint And receives and buffers each of the second data including the image information.

In the case of the second embodiment, the reception buffering unit 21 receives a transport stream (TS) including at least two view images, and buffers each view image by the same packet ID. At this time, the same view image includes the same packet ID.

The time check and synchronization unit 22 checks the time of the view image, which is the received data, and performs synchronization.

First, the time check and synchronization unit 22 checks the PES time of all the view images received. Here, the PES time includes Presentation Time Stamp (PTS) and Decoding Time Stamp (DTS).

For example, when the multi-angle image is two view-angle images acquired from two camera angles, and the first view-image and the second view-point image are included, The PES time and the PES time of the second view image are checked.

In addition, the time checking and synchronizing unit 22 performs synchronization so that reproduction of the second view image is not delayed using the PES time of the first view image and the PES time of the second view image.

The image decoding unit 23 decodes the view image. For example, when the control unit 25 receives the output instruction of the first viewpoint image, the image decoding unit 23 decodes the first viewpoint image, and when the control unit 25 receives the output instruction of the second viewpoint image , And decodes the second viewpoint image.

The video output unit 24 is a unit for outputting a view video. Here, the output may include displaying on a display.

For example, the image output unit 24 outputs the first view image or the second view image under the control of the control unit 25. [

The control unit 25 is a unit for controlling the multi-angle video player 2.

For example, when the control unit 25 receives the output instruction of the first viewpoint image, the control unit 25 controls the image decoding unit 23 to decode the first viewpoint image. At this time, the control unit 25 may control the video output unit 24 to output the first view image.

In another embodiment, when the control unit 25 confirms that the output instruction of the second viewpoint image has been received and the output of the second viewpoint image is received, the time check and synchronization unit 22 displays the PES time of the first viewpoint image And the PES time of the second viewpoint image so that the reproduction of the second viewpoint image is not delayed, and the image decoding unit 23 controls to decode the second viewpoint image. At this time, the control unit 25 can control the video output unit 24 to output the second view image.

2 is a flowchart illustrating a method of reproducing a multi-angle image according to an exemplary embodiment of the present invention.

2, in the multi-angle image reproducing method according to the embodiment of the present invention, the receiving buffering unit 21 of the multi-angle image reproducing apparatus 2 receives from the server 1, (S201). At this time, at least two view images are composed of respective data.

Here, the meta information includes each view video address.

For example, when a multi-angle image is two view-angle images acquired from two angles, the multi-angle image includes a first viewpoint image and a second viewpoint image. In this case, the meta information of the first viewpoint image may be the first viewpoint image meta information, and the meta information of the second viewpoint image may be referred to as the second viewpoint image meta information. The reception buffering unit 21, And the second view image meta information are received as respective data. In this case, the first view image meta information includes a first view image address (e.g., a first view image URL address), the second view image meta information includes a second view image address (e.g., Video URL address).

The receiving buffering unit 21 of the multi-angle image reproducing apparatus 2 receives each PES of at least two view images and performs buffering of each PES (S202).

For example, when a multi-angle image is two view-point images acquired from two angles and includes a first viewpoint image and a second viewpoint image, the first data including the information of the first viewpoint image and the second viewpoint And receives and buffers each of the second data including the image information.

The time check and synchronization unit 22 of the multi-angle image playback apparatus 2 checks the PES time of each of the received view-point images (S203). Here, the PES time includes Presentation Time Stamp (PTS) and Decoding Time Stamp (DTS).

For example, when the multi-angle image is two view-angle images acquired from two camera angles, and the first view-image and the second view-point image are included, The PES time and the PES time of the second view image are checked.

By checking each viewpoint image in this manner, the multi-angle viewpoint reproduction apparatus 2 can synchronize and decode each viewpoint image for delay-free reproduction.

The control unit 25 of the multi-angle image reproducing apparatus 2 confirms whether it has received an output command of the first viewpoint image (S204). The output command is an instruction that is generated when the user inputs an image desired to be output by selection or the like.

When the control unit 25 of the multi-angle image reproducing apparatus 2 receives the output instruction of the first viewpoint image, the image decoding unit 23 decodes the first viewpoint image (S205).

If the controller 25 of the multi-angle image reproducing apparatus 2 does not receive the output command of the first viewpoint image, the controller 25 performs step S204.

The image output unit 24 of the multi-angle image reproducing apparatus 2 outputs the first viewpoint image (S206).

The control unit 25 of the multi-angle image reproducing apparatus 2 confirms whether it has received an output command of the second viewpoint image (S207).

When the control unit 25 of the multi-angle image reproducing apparatus 2 receives the output instruction of the second viewpoint image, the time check and synchronization unit 22 compares the PES time of the first viewpoint image and the PES time of the second viewpoint image Synchronization is performed so that reproduction of the second viewpoint image is not delayed (S208).

The image decoding unit 23 of the multi-angle image reproducing apparatus 2 decodes the second viewpoint image (S209).

The image output unit 24 of the multi-angle image reproducing apparatus 2 outputs the first view image (S210).

3 is a flowchart illustrating a method for reproducing a multi-angle image according to another embodiment of the present invention.

3, in the multi-angle image reproducing method according to another embodiment of the present invention, the receiving buffering unit 21 of the multi-angle image reproducing apparatus 2 receives at least two or more Meta information about the view image is received (S301). At this time, one data means one data type or one file type.

Here, the meta information includes one address of a multi-angle image.

For example, when a multi-angle image is two view-angle images acquired from two angles, the multi-angle image includes a first viewpoint image and a second viewpoint image. At this time, the meta information may be referred to as integrated meta information, and it includes one address (for example, a multi-angle image URL address) of a multi-angle image including a first view image and a second view image.

The reception buffering unit 21 of the multi-angle image reproducing apparatus 2 receives a transport stream (TS) including at least two view images (S302).

The receiving buffering unit 21 of the multi-angle image reproducing apparatus 2 performs buffering of each view image by the same packet ID (S303). At this time, the same view image includes the same packet ID.

For example, if the packet ID of the first viewpoint image is 1000 and the packet ID of the second viewpoint image is 1001, the reception buffering unit 21 collects data having the packet ID of 1000 to buffer the first viewpoint image , The data having the packet ID of 1001 is collected and the buffering of the second viewpoint image is performed.

The time checking and synchronizing unit 22 of the multi-angle image reproducing apparatus 2 checks the PES time of each of the received view-point images (S304). Here, the PES time includes Presentation Time Stamp (PTS) and Decoding Time Stamp (DTS).

For example, when the multi-angle image is two view-angle images acquired from two camera angles, and the first view-image and the second view-point image are included, The PES time and the PES time of the second view image are checked.

By checking each viewpoint image in this manner, the multi-angle viewpoint reproduction apparatus 2 can synchronize and decode each viewpoint image for delay-free reproduction.

The control unit 25 of the multi-angle image reproducing apparatus 2 confirms whether it has received an output command of the first viewpoint image (S305). The output command is an instruction that is generated when the user inputs an image desired to be output by selection or the like.

When the control unit 25 of the multi-angle image reproducing apparatus 2 receives the output command of the first viewpoint image, the image decoding unit 23 decodes the first viewpoint image (S306).

If the controller 25 of the multi-angle image reproducing apparatus 2 does not receive the output command of the first viewpoint image, the controller 25 performs step S305.

The image output unit 24 of the multi-angle image reproducing apparatus 2 outputs the first view image (S307).

The control unit 25 of the multi-angle image reproducing apparatus 2 confirms whether it has received an output command of the second viewpoint image (S308).

When the control unit 25 of the multi-angle image reproducing apparatus 2 receives the output instruction of the second viewpoint image, the time check and synchronization unit 22 compares the PES time of the first viewpoint image and the PES time of the second viewpoint image Synchronization is performed so that reproduction of the second viewpoint image is not delayed (S309).

The image decoding unit 23 of the multi-angle image reproducing apparatus 2 decodes the second viewpoint image (S310).

The image output unit 24 of the multi-angle image reproducing apparatus 2 outputs the first view image (S311).

By doing so, the multi-angle image reproducing apparatus 2 provides a user with a view to efficiently view a VOD (Video on Demand) multi-image without delay.

The method according to embodiments of the present invention may be implemented in the form of program instructions that can be executed through various computer means and recorded on a computer-readable recording medium. The computer-readable recording medium may include program instructions, data data, data structures, and the like, alone or in combination. The program (program instructions) to be recorded on the recording medium may be those specially designed and configured for the present invention or may be those known to those skilled in the computer software. Examples of the computer-readable recording medium include magnetic media such as a hard disk, a floppy disk and a magnetic tape, optical media such as a CDROM and a DVD, magneto-optical media such as a floppy disk, Hardware devices that are specifically configured to store and execute program instructions such as magneto-optical media, ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code such as those generated by a Comdeler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be appreciated that one embodiment is possible. Accordingly, the true scope of the present invention should be determined by the technical idea of the claims.

1: Server
2: Multi-angle image reproduction device
21: Receive buffering unit
22: Time check and synchronization section
23:
24: Video output unit
25:

Claims (10)

A method of reproducing a multi-angle image reproducing apparatus for reproducing at least two view image data,
Receiving meta information of each of the first viewpoint image and the second viewpoint image,
Receiving each of the PESs for the first viewpoint image and the second viewpoint image and performing buffering for each of the PESs,
Checking a PES time of each of the first viewpoint image and the second viewpoint image,
Decoding the first viewpoint image when receiving the output instruction of the first viewpoint image,
Performing buffering of the second viewpoint image and checking the PES time while outputting the first viewpoint image,
Performing synchronization using the PES time of the first viewpoint image and the PES time of the second viewpoint image when receiving the output instruction of the second viewpoint image,
And decoding the second viewpoint image. delete delete A method of reproducing a multi-angle image reproducing apparatus for reproducing at least two view image data,
Receiving meta information of each of the first viewpoint image and the second viewpoint image,
Receiving a transport stream including the first viewpoint image and the second viewpoint image,
Performing buffering of the first viewpoint image and the second viewpoint image for the same packet ID,
Checking a PES time of each of the first viewpoint image and the second viewpoint image,
Decoding the first viewpoint image when receiving the output instruction of the first viewpoint image,
Performing buffering of the second viewpoint image and checking the PES time while outputting the first viewpoint image,
Performing synchronization using the PES time of the first viewpoint image and the PES time of the second viewpoint image when receiving the output instruction of the second viewpoint image,
And decoding the second viewpoint image. delete delete delete delete delete A computer-readable recording medium recording a program for performing the multi-angle image reproducing method according to any one of claims 1 to 4.
KR1020150070198A 2015-05-20 2015-05-20 Method and apparatus for playing multi-angle video KR101634558B1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060099687A (en) * 2005-03-14 2006-09-20 삼성전자주식회사 Device of video-synchronization using time stamp and method thereof
KR20110037824A (en) * 2009-10-05 2011-04-13 한국전자통신연구원 System for providing multi-angle broardcasting service

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060099687A (en) * 2005-03-14 2006-09-20 삼성전자주식회사 Device of video-synchronization using time stamp and method thereof
KR20110037824A (en) * 2009-10-05 2011-04-13 한국전자통신연구원 System for providing multi-angle broardcasting service

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