KR101906066B1 - Method and apparatus for transmitting multiview image - Google Patents

Abstract

The present invention discloses a method and a device, which efficiently utilize a limited bandwidth by differently setting a transmission condition according to whether each view image of a multi-view image is divided into tiles and corresponds to region of interest (ROI). The device for transmitting a multi-view image determines a tile corresponding to the ROI of the view image including the ROI among a plurality of view images included in the multi-view image, gives a priority to the tile corresponding to the ROI, determines a transmission environment of the tile corresponding to the ROI based on the priority and transmits information on the tile corresponding to the ROI to a receiving device according to the transmission environment.

Description

METHOD AND APPARATUS FOR TRANSMITTING MULTIVIEW IMAGE [0002]

Description of the Related Art [0002] The following description relates to a technology for processing a multi-viewpoint image, and relates to a technology for setting transmission conditions differently according to ROI information and transmitting the ROI information.

According to SMV (Super Multi view) or FN (Free Navigation) technology for compressing multi-view images, compression efficiency is high because all view images are compressed into one file. However, when transmitting an image, the bandwidth required for transmitting the compressed data of all viewpoint images is high. A more efficient transmission method is required in a communication environment in which bandwidth limitation exists.

The background art described above is possessed or acquired by the inventor in the derivation process of the present invention, and can not be said to be a known art disclosed in general public before application of the present invention

The present invention provides a method and apparatus for efficiently utilizing a limited bandwidth by dividing each viewpoint image of a multi-viewpoint image by tiles and setting transmission conditions differently depending on whether the viewpoint image corresponds to ROI.

According to an exemplary embodiment, a method of transmitting a multi-view image may include determining a tile corresponding to the ROI of a view image including an ROI (region of interest) among a plurality of view images included in the multi- Determining a transmission environment of the tile corresponding to the ROI on the basis of the priority, and transmitting the information on the tile corresponding to the ROI to the reception device, As shown in FIG.

The determining the transmission environment of the tile corresponding to the ROI may determine the resolution of the tile corresponding to the ROI to be higher than the resolution of the tile not corresponding to the ROI.

The determining the transmission environment of the tile corresponding to the ROI may determine the delay time of the tile corresponding to the ROI to be smaller than the delay time of the tile not corresponding to the ROI.

A method of receiving a multi-view image according to an exemplary embodiment includes determining a reception environment of a tile corresponding to an ROI based on priority, and receiving information on a tile corresponding to the ROI according to the reception environment A tile corresponding to the ROI is determined from among a plurality of tiles included in a view image including an ROI (region of interest) among a plurality of view images included in the multi view image, and a tile corresponding to the ROI May be given priority.

A transmitting method using a HEVC (High Efficient Video Codec) according to an exemplary embodiment of the present invention includes a step of determining a tile corresponding to the ROI of a view image including an ROI from a plurality of view images included in a multi view image, And transmitting information on a corresponding tile, wherein the information on the tile indicates whether the tile corresponds to the ROI, and may be included in an SRD (Spatial Relationship Descriptors) field.

According to an embodiment, a limited bandwidth can be more efficiently utilized by dividing each view image of a multi-view image into tiles and setting transmission conditions differently depending on whether the view image corresponds to ROI.

FIG. 1 is a block diagram of a system for transmitting and receiving a multi-view image according to an exemplary embodiment of the present invention. Referring to FIG.
2A illustrates an arrangement of a plurality of cameras for obtaining a multi-view image according to an exemplary embodiment.
FIG. 2B is a view showing the arrangement of a plurality of cameras for obtaining a multi-view image according to another embodiment.
3 is a flowchart illustrating a method of transmitting a multi-view image according to an exemplary embodiment of the present invention.
FIG. 4 illustrates an example of selecting a tile corresponding to an ROI in a multi-view image according to an embodiment of the present invention.
5 is a diagram illustrating a model of service layer signaling according to an exemplary embodiment.
FIG. 6 is a diagram illustrating a process of transmitting an image using a service layer signaling model according to an exemplary embodiment. Referring to FIG.
7 is a diagram illustrating an example of dividing an image according to an embodiment into a plurality of tiles.

Specific structural or functional descriptions of embodiments are set forth for illustration purposes only and may be embodied with various changes and modifications. Accordingly, the embodiments are not intended to be limited to the specific forms disclosed, and the scope of the disclosure includes changes, equivalents, or alternatives included in the technical idea.

The terms first or second, etc. may be used to describe various elements, but such terms should be interpreted solely for the purpose of distinguishing one element from another. For example, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

It is to be understood that when an element is referred to as being "connected" to another element, it may be directly connected or connected to the other element, although other elements may be present in between.

The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises ", or" having ", and the like, are used to specify one or more of the described features, numbers, steps, operations, elements, But do not preclude the presence or addition of steps, operations, elements, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning of the context in the relevant art and, unless explicitly defined herein, are to be interpreted as ideal or overly formal Do not.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the present invention with reference to the accompanying drawings, the same components are denoted by the same reference numerals regardless of the reference numerals, and a duplicate description thereof will be omitted.

FIG. 1 is a block diagram of a system for transmitting and receiving a multi-view image according to an exemplary embodiment of the present invention. Referring to FIG.

According to one embodiment, the transmitting apparatus 110 may divide the multi view image into tiles and transmit the divided images to the receiving apparatus 120. [ The transmitting apparatus 110 may transmit the different tiles to the receiving apparatus 120 according to a preset reference. The transmitting apparatus 110 may transmit the different tiles to the receiving apparatus 120 according to whether or not the corresponding tiles correspond to the region of interest (ROI).

Here, the ROI refers to an area in which a viewer is interested in an arbitrary viewpoint image. For example, if the total size of the viewpoint image is 1024 * 1024, the viewer's interest may be a portion having a size of 300 * 300 in the center of the viewpoint. In this case, a portion having a size of 300 * 300 in the center can be an ROI to a viewer. For example, in addition to a rectangle, the ROI can be expressed in various forms such as a circle, an ellipse, or an irregular shape.

The transmitting apparatus 110 and the receiving apparatus 120 may use a HEVC (High Efficiency Video Codec) codec. The transmitting apparatus 110 and the receiving apparatus 120 can be applied to an ultra high resolution broadcasting service such as UHDTV or 3DTV. The transmitting device 110 and the receiving device 120 may be applied to real-time streaming such as Internet streaming, VOD service, video conferencing, or video calling. The transmitting device 110 and the receiving device 120 may also be applied to specialized fields such as digital cinema, medical imaging, or satellite imaging.

According to one embodiment, the transmitting device 110 may include a processor 111 and a memory 113. [ When using wireless communication, the transmitting apparatus 110 may further include an antenna 115. [

According to one embodiment, the receiving device 120 may include a processor 121 and a memory 123. When using wireless communication, the receiving apparatus 120 may further include an antenna 125. [

The object 140 can be photographed by a plurality of cameras 130. [ The plurality of cameras 130 may generate a multi-view image by photographing the object 140 at different points in time.

The multi view image obtained from the plurality of cameras 130 may be transmitted to the transmission apparatus 110. The multi-view image may be temporarily stored by the memory 113. [ The multi-view image may be processed by the processor 111. The processor 111 may divide each view image of the multi view image into a plurality of tiles.

The processor 111 may determine a tile corresponding to the ROI of the view image including the ROI from among the plurality of view images included in the multi view image. The processor 111 may give priority to the tile corresponding to the ROI. The processor 111 may determine the transmission environment of the tile corresponding to the ROI based on the priority. The processor 111 may transmit information on the tile corresponding to the ROI to the receiving apparatus according to the transmission environment.

The processor 121 of the receiving apparatus 120 can receive information on the tiles transmitted from the transmitting apparatus 110 via the antenna 125. [ The processor 121 may determine the reception environment of the tile corresponding to the ROI based on the priority. The processor 121 may receive a tile corresponding to the ROI according to the reception environment. The processor 121 may store the received tiles in the memory 123.

For example, the receiving environment may be related to the resolution of the tiles being transmitted. The transmitting apparatus 110 may set the resolution of the tile corresponding to the ROI to a higher value and transmit it to the receiving apparatus 120. [ For example, the receiving environment may be related to the latency of the tiles being transmitted. The transmission apparatus 110 can transmit the delay time of the tile corresponding to the ROI to the reception apparatus 120 with a smaller delay time.

According to an exemplary embodiment, the transmission apparatus 110 and the reception apparatus 120 can use the limited bandwidth more efficiently by setting the transmission environment differently for each tile of each view image of the multi view image. The transmitting apparatus 110 and the receiving apparatus 120 may indicate whether or not the ROI corresponds to the ROI for each tile and may allocate more resources than if the ROI corresponds to the ROI. Accordingly, the transmitting apparatus 110 can efficiently use the limited bandwidth while enhancing the transmission quality for the viewer's area of interest.

2A illustrates an arrangement of a plurality of cameras for obtaining a multi-view image according to an exemplary embodiment. FIG. 2B is a view showing the arrangement of a plurality of cameras for obtaining a multi-view image according to another embodiment.

A multi-view image is a set of images of a scene captured by a plurality of cameras at a plurality of viewpoints. In order to generate a multi-view image, a camera corresponding to each viewpoint is required, and the arrangement of each camera, synchronization, and processing of multi-view images should be considered.

Referring to FIG. 2A, a plurality of cameras may be arranged in an arc shape in one direction around an object. The plurality of cameras may be arranged in a converging arrangement. Each camera is placed toward a virtual point, and the viewpoint of each camera can be converged to a virtual point. The convergent array has a higher freedom of view than the radial array, but it may be possible to change the viewpoint more precisely and smoothly.

Referring to FIG. 2B, a plurality of cameras may be arranged in a circle around an object. The plurality of cameras may be arranged in a radial arrangement around the object. Each camera can be positioned towards a specific point in the middle. The radial arrangement has a larger degree of freedom of view than the converging arrangement, but may require more complicated processing.

3 is a flowchart illustrating a method of transmitting a multi-view image according to an exemplary embodiment of the present invention.

According to an exemplary embodiment, in step 301, the transmitting apparatus may determine a tile corresponding to an ROI of a view image including an ROI among a plurality of view images included in the multi view image. For example, the transmitting apparatus can store the ROI information included in each tile in the SRD field of the HEVC codec.

According to one embodiment, in step 303, the transmitting device may give priority to the tile corresponding to the ROI. The transmitting apparatus can provide a more natural image with the same resource by providing a better transmission condition for the tile including the same ROI as the previous frame.

According to one embodiment, in step 305, the transmitting device may determine the transmission environment of the tile corresponding to the ROI based on the priority. The transmitting apparatus can, for example, determine the resolution of the tile corresponding to the ROI to be higher than the resolution of the tile not corresponding to the ROI. The transmitting apparatus can determine, for example, the delay time of the tile corresponding to the ROI to be smaller than the delay time of the tile not corresponding to the ROI.

According to one embodiment, in step 307, the transmitting apparatus can transmit a tile corresponding to the ROI to the receiving apparatus according to the transmission environment.

FIG. 4 illustrates an example of selecting a tile corresponding to an ROI in a multi-view image according to an embodiment of the present invention.

According to one embodiment, the transmitting apparatus may divide each view image of the multi view image into a plurality of tiles, and determine whether or not each tile corresponds to the ROI. The transmitting apparatus can give a high priority to the tile corresponding to the ROI and give the low priority to the tile not corresponding to the ROI. The transmitting apparatus can transmit information on each tile to another transmitting environment according to the priority.

Referring to FIG. 4, a multi view image for each of different times t0 to t3 is disclosed. The multi view image corresponding to each time is composed of a total of n view images from the viewpoint 0 to the viewpoint n. Each viewpoint image can be divided into 9 tiles.

At time t0, tile 6 at time zero may contain an ROI. The transmitting apparatus can determine a tile representing the same object as the tile 6 among the tiles 0 to n at time t1. The transmitting apparatus can determine that the tile 6 at the time 0, the tile 5 at the time 1, and the tile 4 at the time 2 are indicated by the same object. The transmitting apparatus can determine tile 6 at time 0, tile 5 at time 1, and tile 4 at time 2 as a tile including ROI.

The transmitting apparatus can set the transmission environment of tile 6 at time 0, tile 5 at time 1, and tile 4 at time 2 higher than the remaining tiles. For example, the transmitting apparatus can set the resolution of tile 6 at time 0, tile 5 at time 1, and tile 4 at time 2 higher than the remaining tiles. For example, the transmitting apparatus can set the delay time of tile 6 at time 0, tile 5 at time 1, and tile 4 at time 2 to be lower than remaining tiles.

At time t1, the viewpoint may be changed from the viewpoint 0 to the viewpoint 1 by the viewer. Tile 5 at time 1 may include an ROI. The transmitting apparatus can determine the tile representing the same object as the tile 5 at the time 1 among the tiles 0 to n at the time t2. The transmitting apparatus can determine that the tile 6 at the time 0, the tile 5 at the time 1, and the tile 4 at the time 2 are indicated by the same object. The transmitting apparatus can determine tile 6 at time 0, tile 5 at time 1, and tile 4 at time 2 as a tile including ROI.

The transmitting apparatus can set the transmission environment of the tile 6 at the time 0, the tile 5 at the time 1, and the tile 4 at the time 2 to be higher than the remaining tiles. For example, the transmitting apparatus can set the resolution of tile 6 at time 0, tile 5 at time 1, and tile 4 at time 2 higher than the remaining tiles. For example, the transmitting apparatus can set the delay time of tile 6 at time 0, tile 5 at time 1, and tile 4 at time 2 to be lower than remaining tiles.

At time t2, the viewpoint can be changed again from the viewpoint 1 to the viewpoint 0 by the viewer. Tile 6 at time 0 may contain an ROI. The transmitting apparatus can determine the tile representing the same object as the tile 6 at the time 0 among the tiles 0 to n at the time t3. The transmitting apparatus can determine that the tile 6 at the time 0, the tile 5 at the time 1, and the tile 4 at the time 2 are displayed with the same object. The transmitting apparatus can determine tile 6 at time 0, tile 5 at time 1, and tile 4 at time 2 as a tile including ROI.

The transmitting apparatus can set the transmission environment of the tile 6 at the time 0, the tile 5 at the time 1, and the tile 4 at the time 2 to be higher than the remaining tiles. For example, the transmitting apparatus can set the resolution of tile 6 at time 0, tile 5 at time 1, and tile 4 at time 2 higher than the remaining tiles. For example, the transmitting apparatus can set the delay time of tile 6 at time 0, tile 5 at time 1, and tile 4 at time 2 to be lower than remaining tiles.

5 is a diagram illustrating a model of service layer signaling according to an exemplary embodiment. FIG. 6 is a diagram illustrating a process of transmitting an image using a service layer signaling model according to an exemplary embodiment. Referring to FIG.

Dynamic Adaptive Streaming over HTTP (DASH) is a method for adaptively streaming the amount and quality of DASH segments according to the receiving environment through a HyperText Transfer Protocol (HTTP) transmission protocol in a broadband network. The ROUTE (Real-time Object delivery over Unidirectional Transprot) protocol is one of transmission methods of UHDTV (Ultra High Definition Television) service. Using the ROUTE protocol, UHD class DASH segments can be transmitted through a broadcast network in the same format as a DASH segment transmitted in a broadband network.

In order for the DASH segments constituting the UHDTV service to be transmitted to the receiving device, information on the type of service, transmission time, and transmission method should be transmitted to the receiving device. Signaling may refer to an object that contains information about the type of service, transmission time, and transmission method associated with the DASH segment to be transmitted. Signaling includes Service Layer Signaling (SLS) and Service List Table (SLT). The service list table includes information on the transmission path of the service layer signaling. In the following, the service layer signaling may be referred to as service signaling.

The service layer signaling includes a USBD (User Service Bundle Description) 410, a MPD (Media Presentation Description) 530, and a Service Transport Session Instance Description (S-TSID) 520. The USBD 510 includes one USD (User Service Description) 511.

The USBD 510 / USD 411 serves to reference other objects. Referring to FIG. 5, for example, the USBD 510 / USD 511 may refer to the S-TSID 520 or the MPD 530. The S-TSID 520 serves to indicate through which transmission session the segment is transmitted. The MPD 530 includes information related to the content itself to be serviced and serves to represent a Period, an Adaptation Set, and a Representation corresponding to segments to be transmitted.

A period is an object whose contents are divided in time units. For example, the period may be an object whose video content is divided by 60 seconds. An adaptation set is an object in which each period is divided into component units. Here, the component may refer to a content type such as video or audio. The presentation means an object in which each component is classified according to service quality such as resolution. A segment is an object in which each representation is divided in time units.

Referring to FIG. 6, a physical channel may be allocated to virtual channels connected to the UCP / IP protocol and the ROUTE protocol. Here, the virtual channel may mean a logical channel.

For example, the virtual channel (# 0) may be allocated for the UDP / IP protocol. The service list table can be transmitted through the virtual channel # 0.

For example, the virtual channels # 1 to #N may be allocated for the ROUTE protocol. A plurality of transmission sessions (SLS, v1, ..., v6) can be established by the ROUTE protocol. Each transport session may be a path through which service layer signaling (or service signaling) and segments (e.g., video segments) are transmitted. The virtual channels (# 1 to #N) allocated for the ROUTE protocol can be allocated to a plurality of transmission sessions.

A plurality of viewpoint images may be assigned identifiers v1 to v6, respectively. Input images can be segmented into segments. For example, the six input images are v1-segment # 1, v1-segment # 2, ... , v6-segment # 1, v6-segment # 2, ... , v6-segment #M, and the like. Here, #M may represent an identifier separated by time unit.

Each of the segments may correspond to the transmission sessions v1 to v6 corresponding to the same identifiers v1 to v6 through the virtual channels # 1 to #N. Each segment can be transmitted to the receiving device using the corresponding transmission session (v1 to v6).

In order to transmit the respective segments, service layer signaling (or service signaling) via a transmission session (SLS) may be sent to the receiving device. The service layer signaling may include USBD / USD, MPD and S-TSID.

MPD and S-TSID can be referenced using USBD / USD. For example, @serviced (0x1001) in USD can indicate the service currently running. @ fullMPDUri = asd.mpd can represent information to refer to MPD. @sTSDIUri = asd.stsid may represent information for referring to the S-TSID. @ SIUri = asd.si can represent information to refer to SI.

The receiving apparatus can confirm the period, the adaptation set, and the presentation corresponding to the segment to be transmitted using the MPD. For example, a Period included in an MPD can represent an object separated by a time unit in which a segment belongs as a period. An adaptation set is an adaptation set that can represent the type of component (e.g., video component) to which the segment belongs. For example, each partitioned tile of an arbitrary viewpoint image may correspond to one adaptation set. A representation is a representation that can indicate the quality of service to which the segment belongs or at which point in time it is at. For example, the representation (v1) may represent an image in the direction in which the v1 identifier is assigned. Similarly, representation (v6) can represent an image in the direction to which the v6 identifier is assigned. segmentURL (... / seg # 1) may refer to address information associated with the segment to be transmitted.

The receiving apparatus can know the transmission session through which the segment is transmitted using the S-TSID. For example, referring to FIG. 5, @ tsi-v1 may indicate that a segment is transmitted through a transmission session (v1). ScrFlow indicates what data to be transmitted, and ContentInfo (v1) can indicate that the data to be transmitted is a segment of the video corresponding to the v1 identifier. Similarly, ContentInfo (v6) may indicate that the data to be transmitted is a segment of the video corresponding to the v6 identifier.

The adaptation set may include an SRD field. Conventional SRD fields are shown in Table 1.

Referring to Table 1, source_id indicates the source image source as the source ID. object_x represents the x coordinate of the tile to be transmitted. object_y represents the y coordinate of the tile to be transmitted. object_width represents the horizontal size of the tile to be transmitted. object_height represents the vertical size of the tile to be transmitted. The total_width indicates the width of the original image. total_height represents the vertical size of the original image. The spatial_set_id indicates information on the case of transmission in bundle units.

Referring to Table 2, the structure of a modified SRD field is described according to an embodiment. source_id, object_x, object_y, object_width, object_height, total_width, total_height, and spatial_set_id are the same as those in Table 1. The ROI field gives information about the ROI included in the divided tiles of the view image.

According to one embodiment, a transmission method using HEVC includes the steps of: determining a tile corresponding to an ROI of a view image including an ROI among a plurality of view images included in a multi view image; transmitting information about a tile corresponding to the ROI . Here, the information on the tile indicates whether or not the tile corresponds to the ROI, and may be included in the SRD field.

7 is a diagram illustrating an example of dividing an image according to an embodiment into a plurality of tiles.

Referring to FIG. 7, a viewpoint image including three men and two women is disclosed. The view image can be divided into 9 tiles.

Referring to Table 3, for tile 1, the identification number of the structure of the SRD field is 2017. The SRD field of the identification number 2017 may be composed of the identification number of the view image, the x coordinate of the tile, the y coordinate of the tile, the width of the tile, the length of the tile, the width of the viewpoint image, or the length of the viewpoint image.

For tile 1, "0, 0, 0, 1, 1, 3, 3, man1" may be stored in the SRD field. Here, the identification number of the view image is 0, the x coordinate of the tile is 0, the y coordinate of the tile is 0, the width of the tile is 1, the length of the tile is 1, the width of the view image is 3, The length is 3, and the object of ROI is man1. Tiles 2 through 9 may be described in the same manner.

The embodiments described above may be implemented in hardware components, software components, and / or a combination of hardware components and software components. For example, the devices, methods, and components described in the embodiments may be implemented within a computer system, such as, for example, a processor, a controller, an arithmetic logic unit (ALU), a digital signal processor, such as an array, a programmable logic unit (PLU), a microprocessor, or any other device capable of executing and responding to instructions. The processing device may execute an operating system (OS) and one or more software applications running on the operating system. The processing device may also access, store, manipulate, process, and generate data in response to execution of the software. For ease of understanding, the processing apparatus may be described as being used singly, but those skilled in the art will recognize that the processing apparatus may have a plurality of processing elements and / As shown in FIG. For example, the processing unit may comprise a plurality of processors or one processor and one controller. Other processing configurations are also possible, such as a parallel processor.

The components described in the embodiments may be implemented by one or more programmable logic devices such as a digital signal processor (DSP), a processor, a controller, an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), other electronic devices, Or a combination of hardware and software. At least some of the processes or functions described in the embodiments may be implemented by software, and the software may be recorded on a recording medium. The components, functions and processes described in the embodiments may be implemented by a combination of hardware and software.

The software may include a computer program, code, instructions, or a combination of one or more of the foregoing, and may be configured to configure the processing device to operate as desired or to process it collectively or collectively Device can be commanded. The software and / or data may be in the form of any type of machine, component, physical device, virtual equipment, computer storage media, or device , Or may be permanently or temporarily embodied in a transmitted signal wave. The software may be distributed over a networked computer system and stored or executed in a distributed manner. The software and data may be stored on one or more computer readable recording media.

The method according to an embodiment may be implemented in the form of a program command that can be executed through various computer means and recorded in a computer-readable medium. The computer readable medium may include program instructions, data files, data structures, and the like, alone or in combination. Program instructions to be recorded on a computer-readable medium may be those specially designed and constructed for an embodiment or may be available to those skilled in the art of computer software. Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape; optical media such as CD-ROMs and DVDs; magnetic media such as floppy disks; Magneto-optical media, and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code such as those produced by a compiler, 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 embodiments, and vice versa.

Although the embodiments have been described with reference to the drawings, various technical modifications and variations may be applied to those skilled in the art. For example, it is to be understood that the techniques described may be performed in a different order than the described methods, and / or that components of the described systems, structures, devices, circuits, Lt; / RTI > or equivalents, even if it is replaced or replaced.

110: Transmitting device
111: Processor
113: Memory
115: Antenna
120: Receiver
121: Processor
123: Memory
125: Antenna
130: Multiple cameras
140: Object

Claims (5)

Determining a tile corresponding to the ROI of a view image including a region of interest (ROI) among a plurality of viewpoint images included in the multi-viewpoint image;
Assigning a priority to a tile corresponding to the ROI;
Determining a transmission environment of a tile corresponding to the ROI based on the priority; And
Transmitting information on a tile corresponding to the ROI to a receiving apparatus in accordance with the transmission environment
Lt; / RTI >
Wherein the determining the tile comprises: determining a tile corresponding to the ROI for each of the multiple view images,
The step of assigning a priority may include assigning a high priority to a determined tile of each of the multi view images, assigning a low priority to other tiles,
Wherein the determining of the transmission environment comprises setting a transmission delay time of the tiles to which the high priority is allocated to be low and setting a transmission delay time of the tiles to which the low priority is allocated to be high,
A method of transmitting a multi-view image.
The method according to claim 1,
Wherein the determining the transmission environment of the tile corresponding to the ROI comprises:
Wherein the resolution of the tile corresponding to the ROI is higher than the resolution of the tile not corresponding to the ROI. delete Determining a reception environment of the tile corresponding to the ROI based on the priority; And
Receiving information on a tile corresponding to the ROI according to the reception environment
Lt; / RTI >
A tile corresponding to the ROI is determined from a plurality of tiles included in a view image including a region of interest (ROI) among a plurality of view images included in the multi view image,
The priority is given to a tile corresponding to the ROI,
A tile corresponding to the ROI is determined for each of the multi view images, a high priority is assigned to a determined tile of each of the multi view images, a low priority is assigned to other tiles, The transmission delay time is set to be low and the transmission delay time of the tiles to which the low priority is allocated is set to be high,
A method for receiving a multi-view image.
A transmission method using a HEVC (High Efficient Video Codec)
Determining a tile corresponding to the ROI of a view image including an ROI from a plurality of viewpoint images included in the multi-viewpoint image; And
Transmitting information on a tile corresponding to the ROI
Lt; / RTI >
The information on the tile indicates whether the tile corresponds to the ROI, is included in a spatial relationship descriptor (SRD) field,
Wherein the determining the tile comprises: determining a tile corresponding to the ROI for each of the multiple view images,
A high priority is assigned to a determined tile of each of the multi view images, a low priority is assigned to other tiles, a transmission delay time of the tiles to which the high priority is allocated is set to be low, The delay time is set high,
Multi - view image transmission method using HEVC.

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