KR20150089656A - Method and video transmission server for transmitting motion vector, and method and device for reproducing video - Google Patents

Abstract

The present invention relates to a method for transmitting a motion vector, which comprises the steps of: determining a first motion vector corresponding to a first motion section of an object in a video; determining a second motion vector corresponding to a second motion section of the object; grouping the first motion vector and the second motion vector together; determining a representative motion vector corresponding to the group based on at least one among the first motion vector and the second motion vector; and transmitting the video and the representative motion vector to a device. The representative motion vector provides a method for restoring an image loss in the first motion section or the second motion section.

Description

TECHNICAL FIELD [0001] The present invention relates to a method and a device for transmitting a motion vector, a moving picture transmission server, and a moving picture playback method and device,

A method of transmitting a motion vector, a moving picture transmission server, and a moving picture reproducing method and device.

Recently, as the hardware performance of multimedia display has increased and consumers' desire for ultra high resolution has become stronger, a video coding standard for ultra high resolution images has been demanded. Although the bandwidth of the network that transmits multimedia data has increased sufficiently, image coding performance is still important for higher image quality.

An encoder for general image compression stores pixel data of a reconstructed image in an external frame memory having a large storage capacity and reads the current image pixel and the reconstructed image pixel stored in the frame memory by a motion estimation device.

Korean Unexamined Patent Publication No. 2008-0084890 discloses an efficient encoding and decoding apparatus for moving picture data, which can easily perform decoding in a pixel region by eliminating a process of inverse quantization and inverse frequency conversion when decoding moving picture data. .

A method, server and device for restoring a video loss in a moving picture by determining a motion vector corresponding to a motion duration of an object in the moving picture and using a motion vector. It is also an object of the present invention to provide a method, a server and a device for ensuring time and quality consumed by limiting an object and limiting it to an interval that is repeated in a playback time. It is to be understood, however, that the technical scope of the present invention is not limited to the above-described technical problems, and other technical problems may be present.

According to an aspect of the present invention, there is provided a method for generating a motion vector, the method comprising: determining a first motion vector corresponding to a first motion duration of an object in a moving image; Determining a motion vector, determining a first motion vector and a second motion vector as the same group, determining a representative motion vector corresponding to the group based on at least one of the first motion vector and the second motion vector And transmitting the representative motion vector to the device, wherein the representative motion vector may provide a method for recovering a video loss of the first motion interval or the second motion interval.

According to another embodiment of the present invention, there is provided a motion vector estimating method for determining a first motion vector corresponding to a first motion duration of an object in a moving image, and determining a second motion vector corresponding to a second motion duration of the object, A group determination unit for determining the first motion vector and the second motion vector as the same group, a representative motion vector determination unit for determining a representative motion vector corresponding to the group based on at least one of the first motion vector and the second motion vector, And a transmitting unit for transmitting the moving picture, the moving picture, and the representative motion vector to the device, wherein the representative motion vector may provide a moving picture transmission server for restoring the video loss of the first moving time period or the second moving time period.

According to another embodiment of the present invention, there is provided a method for restoring video data, comprising the steps of: receiving a moving picture and a representative motion vector from a moving picture transmission server; recognizing occurrence of a video loss in the moving picture; And reproducing the moving picture based on the result, wherein the representative motion vector may provide a method for recovering a video loss of a first motion interval or a second motion interval of an object in the moving picture.

In addition, in another embodiment of the present invention, there is provided a motion compensation method comprising: a receiving unit that receives a moving picture and a representative motion vector from a moving picture transmission server; a video loss recognizing unit that recognizes a video loss in the moving picture; And a playback unit for playing back the moving image based on the restoration result. The representative motion vector may provide a device for restoring a video loss of a first motion interval or a second motion interval of an object in the moving image.

The above-described task solution is merely exemplary and should not be construed as limiting the present invention. In addition to the exemplary embodiments described above, there may be additional embodiments described in the drawings and the detailed description of the invention.

According to one of the above-mentioned objects of the present invention, there is provided a method, a server and a device for restoring a video loss in a moving picture by determining a motion vector corresponding to a moving interval of an object in the moving picture and using a motion vector have. It is also possible to provide a method, a server and a device for ensuring time and quality consumed by limiting an object and limiting it to a repeated section in the playback time.

1 is a block diagram of a moving picture system according to an embodiment of the present invention.
2 is a configuration diagram of a moving picture transmission server according to an embodiment of the present invention.
3 is a configuration diagram of a device according to an embodiment of the present invention.
4 is a diagram illustrating an example of moving picture and representative motion vector transmission.
FIG. 5 is a signal flow diagram illustrating a process of reconstructing a lost video image according to an embodiment of the present invention.
6 is a signal flow diagram illustrating a process of reconstructing a lost video image according to another embodiment of the present invention.
7 is a flowchart illustrating a method of reconstructing and recovering a lost video in a moving picture using a motion vector according to an embodiment of the present invention.
8 is a flowchart illustrating a motion vector and a motion picture transmission method according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only "directly connected" but also "electrically connected" with another part in between . Also, when an element is referred to as "comprising ", it means that it can include other elements as well, without departing from the other elements unless specifically stated otherwise.

In this specification, the term " part " includes a unit realized by hardware, a unit realized by software, and a unit realized by using both. Further, one unit may be implemented using two or more hardware, or two or more units may be implemented by one hardware.

In this specification, some of the operations or functions described as being performed by the terminal or the device may be performed in the server connected to the terminal or the device instead. Similarly, some of the operations or functions described as being performed by the server may also be performed on a terminal or device connected to the server.

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

1 is a block diagram of a moving picture system according to an embodiment of the present invention. Referring to FIG. 1, a moving picture system may include a moving picture transmission server 10, a device 20, and the like. However, since the moving picture system shown in FIG. 1 is only an embodiment of the present invention, the present invention is not limited to the example shown in FIG.

Each component of Fig. 1 may generally be connected via a network. The network refers to a connection structure in which information can be exchanged between each node such as terminals and servers. One example of such a network is a 3rd Generation Partnership Project (3GPP) network, a Long Term Evolution (LTE) , A WIMAX (World Interoperability for Microwave Access) network, the Internet, a LAN (Local Area Network), a wireless LAN (Local Area Network), a WAN ) Networks, satellite broadcast networks, analog broadcast networks, and the like.

The moving picture transmission server 10 can determine a plurality of motion vectors corresponding to the motion duration of an object in the moving picture. For example, the moving picture transmission server 10 can determine a plurality of motion vectors in a motion interval in which a person named "Tiger Woods " In this case, the motion section may include a frame different from the frame in the moving image. And a motion vector may exist in the motion section. In this case, the motion vector may be a vector with respect to a direction and a size indicating a position of a block at a specific position in a frame from another frame.

The moving picture transmission server 10 may determine a plurality of motion vectors as the same group. For example, the moving picture transmission server 10 can determine a plurality of motion vectors in a plurality of motion intervals in which a person named "Tiger Woods " At this time, the moving picture transmission server 10 can determine a plurality of motion vectors into the same group based on the similarity between the plurality of motion sections. In this case, the degree of similarity may be a value for similarity between motion vectors between motion intervals and other motion vectors.

 In addition, the moving picture transmission server 10 can determine the same group based on statistical analysis of a plurality of motion vectors. For example, the moving picture transmission server 10 may determine a plurality of motion vectors within the set range as the same group through statistical analysis.

The moving picture transmission server 10 can determine a representative group of representative motion vectors. At this time, the moving picture transmission server 10 may determine one of the plurality of motion vectors in the group as a representative motion vector.

The moving picture transmission server 10 may transmit the moving picture and the representative motion vector to the device 20. [ At this time, the moving picture transmission server 10 may receive the representative motion vector from the device 20 in response to the request for the representative motion vector.

The device 20 may receive the moving picture and the representative motion vector from the moving picture transmission server 10. At this time, the device 20 may request a representative motion vector from the moving image transmission server 10 and receive a representative motion vector from the moving image transmission server 10 as a response thereto.

The device 20 can recognize the video loss in the moving picture and can restore the video loss using the representative motion vector. In this case, an example of a video loss may be a video loss occurring during reception.

In addition, the device 20 can recognize a loss of an image in which a specific person has a repetitive motion pattern in the moving image. For example, the device 20 can recognize a video loss for any one of a scene in which a drive shot having a repetitive motion pattern is shot among a scene in which "Tiger Woods" appears. The device 20 may recover the lost video using the representative motion vector received from the moving image transmission server 10.

The device 20 can reproduce the moving image based on the restored image. At this time, the reconstructed image is a reconstructed image using a motion vector.

The device 20 may be implemented as a broadcast playback device 20. For example, the device 20 includes a device capable of displaying broadcast images such as a smart TV, an IPTV, a monitor connected to the PC, and a set-top box connected to the TV. An apparatus such as a set-top box may be included inside the TV apparatus, and may be connected to the TV apparatus as an external apparatus.

1 will be described in more detail with reference to the following drawings.

2 is a configuration diagram of a moving picture transmission server 10 according to an embodiment of the present invention. 2, the moving picture transmission server 10 includes a motion vector determination unit 101, a group determination unit 102, a representative motion vector determination unit 103, a transmission unit 104, a frame division unit 105, And a database 106. However, the configuration of the moving picture transmission server 10 of FIG. 2 is not limited to those shown in FIG.

The motion vector determination unit 101 may determine a first motion vector corresponding to a first motion duration of an object in a moving image and determine a second motion vector corresponding to a second motion duration of the object. In this case, the frame dividing unit 105 may divide the moving picture into a plurality of frames before the step of determining the first motion vector.

The first motion interval includes a first frame and a second frame of the moving picture, and the second motion interval includes a third frame and a fourth frame of the moving picture. The first motion vector includes a first frame and a second frame, And the second motion vector may be a motion vector between the third frame and the fourth frame. In this case, the second frame may not be the previous frame or the subsequent frame of the first frame. For example, the second frame may be a frame other than the frame before and after the first frame, but different frames of time. Also in the case of the fourth frame, it may not be the previous frame or the latter frame of the current frame.

In this case, the object is a person object, and the first motion interval and the second motion interval may be intervals in which the motion of the person object is repeated at different playback times. For example, a person named "Tiger Woods" may be an object, a first motion segment may be a motion segment where "Tiger Woods " It may be a movement interval to hit a driver's shot at the third hole.

The group determination unit 102 may determine the first motion vector and the second motion vector as the same group. In this case, the group determination unit 102 may determine the first group of motion vectors and the second group of motion vectors as the same group based on the degree of similarity between the first motion period and the second motion period . In this case, the first motion segment may be a first frame and a second frame in which "Tiger Woods" may hit the driver's shot at the first hole, and the second motion segment may be " Tiger Woods " Frame and a fourth frame. At this time, the degree of similarity may be a similar degree between frames between motion intervals.

An example of a method of determining the first motion vector and the second motion vector by the group determination unit 102 as the same group is to determine the motion vectors of the first motion vector and the second motion vector based on the similarity between the first motion vector and the second motion vector, The motion vectors are determined as the same group. In this case, the degree of similarity may be a value for a similar degree of the first motion vector and the second motion vector.

The group determination unit 102 is a method for determining the first motion vector and the second motion vector as the same group. In the group determination unit 102, the first motion vector and the second motion vector are grouped into the same group based on statistical analysis of the plurality of motion vectors You can decide. For example, the group determination unit 102 may determine a plurality of motion vectors as the same group if the first motion vector and the second motion vector are associated with each other through statistics.

The group determination unit 102 determines a distribution of a plurality of motion vectors based on statistical analysis of a plurality of motion vectors as another method of determining the first motion vector and the second motion vector as the same group, The first motion vector and the second motion vector within the error range can be determined to be the same group. For example, the group determination unit 102 may determine a distribution for a plurality of motion vectors by statistically counting a plurality of motion vectors, and may determine a plurality of motion vectors within a predetermined error range in the determined distribution as the same group.

The representative motion vector determination unit 103 may determine a representative motion vector corresponding to the group based on at least one of the first motion vector and the second motion vector. For example, the representative motion vector determination unit 103 may determine one of the motion vectors corresponding to the group as a representative motion vector. One example of a method of determining a representative motion vector by the representative motion vector determination unit 103 at this time includes determining a motion vector closest to the average of the group as a representative motion vector. At this time, the representative motion vector can be used to recover the video loss.

The transmitting unit 104 may transmit the moving picture and the representative motion vector to the device 20. In this case, the transmitting unit 104 transmits data including the representative motion vector to the device 20, and the data may further include an ID corresponding to the first motion period or the second motion period. In this case, the ID may include an ID for distinguishing a motion interval, an ID for distinguishing a motion vector, an ID for distinguishing a frame, and an ID for distinguishing a representative motion vector. The transmitting unit 104 can generate an ID that can distinguish a motion interval, an ID that can distinguish a motion vector, an ID that can distinguish a frame, and an ID that can distinguish a representative motion vector, have.

For example, the transmitting unit 104 may generate IDs that combine IDs capable of distinguishing motion intervals and IDs capable of distinguishing motion vectors, and may include ID data in the representative motion vector data.

The transfer unit 104 may receive a request for a representative motion vector from the device 20. At this time, the information on the request may include one or more IDs of the first motion vector, the second motion vector, or the representative motion vector. For example, the transfer unit 104 may receive a request from the device 20 to transfer the representative motion vector along with the representative motion vector ID. The transmitting unit 104 may transmit the requested representative motion vector from the device 20.

The transmitting unit 104 may transmit the moving picture and the representative motion vector together through the streaming. For example, the transmitting unit 104 may provide moving pictures and representative motion vectors in real time through streaming.

The database 106 may store a representative motion vector mapped to at least one of the first motion vector and the second motion vector. In this case, the representative motion vector may be one of a first motion vector and a second motion vector, and may include a representative motion vector ID.

4 is a diagram illustrating an example of moving picture and representative motion vector transmission. Referring to FIG. 4, the first frame 30 from the top transmits the largest number of frames, and transmits the smaller number of frames. The difference between the second, third, fourth, and first frames 30 is the difference between sending and not sending motion vectors. By transmitting a specific frame and a motion vector instead of transmitting all the frames as in the first frame 30, the transmission cost can be saved.

3 is a configuration diagram of a device 20 according to an embodiment of the present invention. Referring to FIG. 3, the device 20 may include a receiving unit 201, a video loss recognizing unit 202, a restoring unit 203, and a reproducing unit 204. However, the configuration of the device 20 is not limited to Fig.

The receiving unit 201 may receive a moving picture and a representative motion vector from the moving picture transmission server 10. At this time, in case of the representative motion vector, the representative motion vector can be received at the request of the device 20.

The video loss recognition unit 202 can recognize a video loss in a moving image. At this time, the video loss may be a video loss from the moving picture transmission server 10 during the transmission process. Then, the video loss recognition unit 202 can recognize only the repeated motion interval related to the object in the video, not the whole video loss recognition. For example, the video loss recognition unit 202 can recognize a video loss during a scene in which "Tiger Woods "

The restoring unit 203 may restore the video loss using the representative motion vector. For example, when the loss of an image is recognized in the first frame in which "Tiger Woods" picks up the driver's shot at the first hole, the restoring unit 203 uses the representative motion vector A method of copying a block of a third frame which takes a driver shot at the third hole by using a representative motion vector may be used.

A method of copying the block of the second frame can be used.

The reproducing unit 204 can reproduce the moving image based on the restoration result. For example, the playback unit 204 may play back a moving image including a frame in which a lost image is restored during a scene in which "Tiger Woods "

FIG. 5 is a signal flow diagram illustrating a process of reconstructing a lost video image according to an embodiment of the present invention. In step S501, the moving picture transmission server 10 may divide the moving picture into a plurality of frames. At this time, the moving picture transmission server 10 can be used to determine a motion vector by dividing into frames.

In step S502, the moving picture transmission server 10 may determine the first motion vector. In this case, the first motion vector is a motion vector corresponding to the first motion interval, the first motion interval includes a first frame and a second frame, the first motion vector includes motion between the first frame and the second frame Lt; / RTI >

In step S503, the moving picture transmission server 10 may determine the second motion vector. In this case, the second motion vector is a motion vector corresponding to the second motion interval, the second motion interval includes the third frame and the fourth frame, and the second motion vector includes motion between the third frame and the fourth frame Lt; / RTI >

In step S504, the moving picture transmission server 10 may determine the first motion vector and the second motion vector as the same group. At this time, the moving picture transmission server 10 determines the distribution of the plurality of motion vectors based on the statistical analysis of the plurality of motion vectors, and divides the first motion vector and the second motion vector within the error range into the same group You can decide. For example, the moving picture transmission server 10 may determine a distribution for a plurality of motion vectors by counting a plurality of motion vectors, and may determine a plurality of motion vectors within a predetermined error range in the determined distribution as the same group.

In step S505, the moving picture transmission server 10 may determine a representative motion vector. At this time, the moving picture transmission server 10 may determine a representative motion vector corresponding to the group based on at least one of the first motion vector and the second motion vector. For example, the moving picture transmission server 10 may determine one of the motion vectors corresponding to the group as a representative motion vector. In this case, the moving picture transmission server 10 may determine a motion vector that is the closest to the average among the group of motion vectors as a representative motion vector.

In step S506, the moving picture transmission server 10 may transmit the moving picture and the representative motion vector to the device 20. [ At this time, the moving picture transmission server 10 transmits data including the representative motion vector to the device 20, and the data may further include an ID corresponding to the first motion interval or the second motion interval. In this case, the ID may be an ID for distinguishing a motion interval, an ID for distinguishing a motion vector, an ID for distinguishing a frame, an ID for distinguishing a representative motion vector, It can be created with a single ID.

For example, the moving picture transmission server 10 may generate an ID including an ID capable of distinguishing a motion interval and an ID capable of distinguishing a representative motion vector, and may include the ID in the data including the representative motion vector.

In addition, the moving picture transmission server 10 may transmit moving pictures and representative motion vectors together through streaming. For example, the moving picture transmission server 10 can provide moving pictures and representative motion vectors in real time through streaming.

In step S507, the device 20 can recognize occurrence of video loss in the moving image. At this time, as an example of video loss, video loss may occur during transmission from the moving picture transmission server 10. At this time, the device 20 can limit only the repeated motion interval related to the object in the moving picture, not recognizing all the video loss in motion pictures. For example, the device 20 may recognize a video loss during a scene in which "Tiger Woods "

In step S508, the device 20 may recover the video loss using the representative motion vector. For example, the device 20 may restore using a method of copying a block of a second frame using a representative motion vector if a loss of the image is recognized in the first frame in which "Tiger Woods" have.

In step S509, the device 20 can play back moving pictures. At this time, the device 20 can reproduce the moving image based on the result of restoring the lost image. For example, the device 20 can play back a moving image including a frame in which a lost image is restored during a scene in which "Tiger Woods "

In the above description, steps S501 to S509 may be further divided into additional steps or combined into fewer steps, according to an embodiment of the present invention. Also, some of the steps may be omitted as necessary, and the order between the steps may be changed.

6 is a signal flow diagram illustrating a process of reconstructing a lost video image according to another embodiment of the present invention. The procedure from step S601 to step S605 is the same as the description from step S501 to step S505 in Fig. 5 and can be omitted.

In step S606, the moving picture transmission server 10 may transmit the moving picture to the device 20. [ In step S507, the device 20 can recognize occurrence of video loss in the moving image. At this time, as an example of video loss, video loss may occur during transmission from the moving picture transmission server 10. In this case, the recognition of the video loss in the moving picture may be limited to the repeated motion intervals related to the object in the moving picture, not the whole moving picture recognition. For example, the device 20 may recognize a video loss during a scene in which "Tiger Woods "

In step S608, the device 20 may request the moving picture transmission server 10 for a representative motion vector. At this time, the information on the request may include one or more IDs of the first motion vector, the second motion vector, or the representative motion vector. For example, the device 20 can make a request for a representative motion vector including an ID of a representative motion vector to the moving image transmission server 10.

In step S609, the moving picture transmission server 10 may transmit the representative motion vector to the device 20. At this time, the representative motion vector may be a representative motion vector having the ID requested from the device 20.

In step S610, the device 20 may recover the video loss using the representative motion vector. For example, the device 20 may restore using a method of copying a block of a second frame using a representative motion vector if a loss of the image is recognized in the first frame in which "Tiger Woods" have.

In step S611, the device 20 can play back the moving picture. At this time, the device 20 can reproduce the moving image based on the result of restoring the lost image. For example, the device 20 can play back a moving image including a frame in which a lost image is restored during a scene in which "Tiger Woods "

In the above description, steps S601 to S611 may be further divided into additional steps or combined into fewer steps, according to an embodiment of the present invention. Also, some of the steps may be omitted as necessary, and the order between the steps may be changed.

7 is a flowchart illustrating a method of reconstructing and recovering a lost video in a moving picture using a motion vector according to an embodiment of the present invention. In step S701, the device 20 may receive the moving picture and the representative motion vector. At this time, the device 20 can request a representative motion vector to the moving image transmission server 10 and receive the representative motion vector requested from the moving image transmission server 10. [

In step S702, the device 20 can recognize occurrence of video loss in the moving image. In this case, an example of the video loss may be video loss from the moving picture transmission server 10 during the transmission process. In addition, the device 20 can recognize a loss of an image having a repetitive movement pattern of a specific person in the moving picture, rather than recognizing all of the video loss recognition in the moving image. For example, the device 20 may recognize a video loss for a scene in which "Tiger Woods "

In step S703, the device 20 can recover the video loss using the representative motion vector. For example, if the device 20 recognizes a video loss in the first frame of the driver's shot at the first hole, " Tiger Woods "determines a block with video loss and uses & It is possible to copy and restore the block of the second frame for which the driver shot is obtained in the third hole.

In step S704, the device 20 can reproduce the moving picture based on the restoration result. For example, the device 20 may play back the moving image including the result of restoring the video loss of the first frame in which the "Tiger Woods "

In the above description, steps S701 to S704 may be further divided into additional steps or combined into fewer steps, according to an embodiment of the present invention. Also, some of the steps may be omitted as necessary, and the order between the steps may be changed.

8 is a flowchart illustrating a motion vector and a motion picture transmission method according to an embodiment of the present invention. In FIG. 8, a motion vector and a motion picture transmission method include an operation of being processed in a time-series manner in the moving picture transmission server 10 described with reference to FIG. 1 and FIG. Therefore, the description of the moving picture transmission server 10 described with reference to FIGS. 1 and 2 is also applied to FIG. 8, even if omitted below.

In step S801, the moving picture transmission server 10 may determine a first motion vector corresponding to a first motion duration of an object in the moving picture. At this time, the moving picture transmission server 10 may divide the moving picture into a plurality of frames before determining the first motion vector. In this case, the object is a person object, and the first motion interval and the second motion interval may be intervals in which the motion of the person object is repeated at different playback times. For example, a person named "Tiger Woods" may be an object, a first motion segment may be a first motion segment in which "Tiger Woods " And a second frame, and the first motion vector may be a motion vector between the first frame and the second frame.

In step S802, the moving picture transmission server 10 may determine a second motion vector corresponding to a second motion duration of the object. For example, the moving picture transmission server 10 may be a second motion section in which "Tiger Woods " In this case, the first motion interval and the second motion interval may be related motion intervals. The second motion interval may include a third frame and a fourth frame, and the second motion vector may be a motion vector between the third frame and the fourth frame.

In step S803, the moving picture transmission server 10 may determine the first motion vector and the motion vector as the same group. In this case, the moving picture transmission server 10 may determine the first group of motion vectors and the second group of motion vectors as the same group based on the similarity between the first motion period and the second motion period . At this time, the first motion segment may be a first frame and a second frame, in which "Tiger Woods" may be a driver shot, and a second motion segment may be a third frame, . In this case, the degree of similarity may be a value obtained by comparing similar degrees of frames between motion intervals. If the degree of similarity is determined, it can be determined that the first group is the same group if it is determined that the first and second groups are similar based on the similarity.

In step S804, the moving picture transmission server 10 may determine a representative motion vector corresponding to the group based on at least one of the first motion vector and the second motion vector. For example, the moving picture transmission server 10 may determine one of the motion vectors corresponding to the group as a representative motion vector. In this case, the moving picture transmission server 10 may determine a motion vector that is the closest to the average among the group of motion vectors as a representative motion vector. At this time, the representative motion vector can be used to recover the video loss.

In step S805, the moving picture transmission server 10 may transmit the moving picture and the representative motion vector to the device 20. At this time, the moving picture transmission server 10 may transmit moving pictures and representative motion vectors together through streaming. For example, the moving picture transmission server 10 can provide moving pictures and representative motion vectors in real time through streaming.

In the above description, steps S801 to S805 may be further divided into further steps or combined into fewer steps, according to an embodiment of the present invention. Also, some of the steps may be omitted as necessary, and the order between the steps may be changed.

8, a motion vector and a motion picture transmission method may be implemented in the form of a recording medium including instructions executable by a computer such as a program module executed by a computer. Computer readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media.

In addition, the computer-readable medium may include both computer storage media and communication media. Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Communication media typically includes any information delivery media, including computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave, or other transport mechanism.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

10: Video transmission server
20: Device

Claims (19)

A method for transmitting a motion vector,
Determining a first motion vector corresponding to a first motion duration of an object in the moving picture;
Determining a second motion vector corresponding to a second motion duration of the object;
Determining the first motion vector and the second motion vector as the same group;
Determining a representative motion vector corresponding to the group based on at least one of the first motion vector and the second motion vector; And
And transmitting the moving picture and the representative motion vector to a device,
Wherein the representative motion vector is for recovering a video loss of the first motion interval or the second motion interval.
The method according to claim 1,
Wherein the step of determining the same group is to determine the first motion vector and the second motion vector as the same group based on the similarity between the first motion interval and the second motion interval.
The method according to claim 1,
Wherein determining the same group comprises determining the first motion vector and the second motion vector as the same group based on the degree of similarity between the first motion vector and the second motion vector.
The method according to claim 1,
Wherein the first motion section includes a first frame and a second frame of the moving image, the second motion section includes a third frame and a fourth frame of the moving image,
Wherein the first motion vector is a motion vector between the first frame and the second frame and the second motion vector is a motion vector between the third frame and the fourth frame.
5. The method of claim 4,
And dividing the moving picture into a plurality of frames prior to the step of determining the first motion vector.
The method according to claim 1,
Wherein the transmitting step transmits data including the representative motion vector to the device,
Wherein the data further comprises an ID corresponding to the first motion interval or the second motion interval.
2. The method of claim 1, wherein determining the same group comprises determining the first motion vector and the second motion vector as the same group based on statistical analysis of the plurality of motion vectors.
8. The method of claim 7,
Wherein the determining of the same group comprises: determining a distribution of the plurality of motion vectors based on a statistical analysis of a plurality of motion vectors; and comparing the first motion vector and the second motion vector, which are within an error range in the determined distribution, ≪ / RTI >
The method according to claim 1,
Wherein the image loss is reconstructed based on the representative motion vector.
The method according to claim 1,
The object is a person object,
Wherein the first motion interval and the second motion interval are intervals in which the motion of the person object is repeated at different playback times.
The method according to claim 1,
Further comprising mapping at least one of the first motion vector and the second motion vector to the representative motion vector and storing the same in a database.
The method according to claim 1,
Wherein the representative motion vector is the first motion vector.
The method according to claim 1,
Wherein the transmitting comprises:
Transmitting the moving picture to the device;
Receiving a request for the representative motion vector from the device; And
And transmitting the representative motion vector to the device.
14. The method of claim 13,
Wherein the request comprises at least one of the first motion vector, the second motion vector, or the representative motion vector.
The method according to claim 1,
Wherein the transmitting comprises:
And transmitting the moving picture and the representative motion vector together through a single streaming.
A moving picture transmission server for transmitting a motion vector,
A motion vector determination unit that determines a first motion vector corresponding to a first motion duration of an object in the moving image and determines a second motion vector corresponding to a second motion duration of the object;
A group determination unit for determining the first motion vector and the second motion vector as the same group;
A representative motion vector determination unit for determining a representative motion vector corresponding to the group based on at least one of the first motion vector and the second motion vector; And
And a transmitter for transmitting the moving picture and the representative motion vector to a device,
Wherein the representative motion vector is for recovering a video loss of the first motion interval or the second motion interval.
17. The method of claim 16,
A frame dividing unit dividing the moving picture into a plurality of frames; And
And a database for storing the representative motion vectors mapped to at least one of the first motion vector and the second motion vector.
In a method of playing a moving picture,
Receiving a moving picture and a representative motion vector from a moving picture transmission server;
Recognizing occurrence of video loss in the moving picture;
Reconstructing the video loss using the representative motion vector; And
And reproducing the moving picture based on the restoration result,
Wherein the representative motion vector is for recovering a video loss of a first motion interval or a second motion interval of an object in the moving image.
In a device,
A receiving unit for receiving moving pictures and representative motion vectors from the moving picture transmission server;
A video loss recognition unit for recognizing a video loss in the moving picture;
A reconstruction unit for reconstructing the video loss using the representative motion vector; And
And a playback unit for playing back the moving image based on the restoration result,
Wherein the representative motion vector is for recovering a video loss of a first motion interval or a second motion interval of an object in the moving image.

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