WO2017091023A1 - 비디오 복호화 방법 및 장치, 그 부호화 방법 및 장치 - Google Patents
비디오 복호화 방법 및 장치, 그 부호화 방법 및 장치 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
- H04N19/129—Scanning of coding units, e.g. zig-zag scan of transform coefficients or flexible macroblock ordering [FMO]
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- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
- H04N19/103—Selection of coding mode or of prediction mode
- H04N19/11—Selection of coding mode or of prediction mode among a plurality of spatial predictive coding modes
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- H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
- H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
- H04N19/172—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a picture, frame or field
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- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
- H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
- H04N19/174—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a slice, e.g. a line of blocks or a group of blocks
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- H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
- H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
- H04N19/176—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
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- H04N19/44—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
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- H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
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- H04N19/157—Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
Definitions
- a video decoding method and apparatus and an encoding method and apparatus.
- the present invention relates to a method of encoding / decoding a video according to an adaptive scan order using a scanning unit composed of maximum coding units.
- a coding order of maximum coding units follows a raster scan order
- a coding order of coding units that are hierarchically divided into quad-tree structures from the maximum coding units follows a z-scan order. That is, the existing coding order is fixedly determined in the direction from left-up to right-down, so that the position of the reference samples used in intra prediction and the neighboring blocks used to derive motion information in inter prediction The list is also fixed.
- other coding orders may be more efficient, depending on conditions such as correlation between the current block and neighboring blocks.
- the present invention provides a video decoding / coding method and apparatus for improving coding efficiency through video decoding / coding according to an adaptive scan order using a scanning unit composed of maximum coding units.
- a video decoding method comprising: receiving a bitstream of an encoded video; Obtaining shape information of at least one scanning unit composed of a predetermined number of adjacent maximum coding units among a plurality of maximum coding units divided from a picture, from the bitstream; Determining a shape of one or more scanning units according to the obtained shape information; Obtaining processing order information of at least one scanning unit for the current picture and processing order information of maximum coding units included in the at least one scanning unit from the bitstream; Determining a processing order of at least one scanning unit included in the current picture based on the processing order information of the at least one scanning unit; Determining a processing order of the largest coding units included in each scanning unit based on processing order information of the maximum coding units included in the one or more scanning units; And decoding the plurality of maximum coding units included in the current picture according to the determined processing order of one or more scanning units and the determined processing order of the maximum coding units included in each scanning unit. This may be provided.
- a video encoding method comprising: determining a shape of one or more scanning units including a predetermined number of adjacent maximum coding units among a plurality of maximum coding units divided from a picture; Generating information indicative of the form of one or more scanning units; Determining a processing order of one or more scanning units included in the current picture and a processing order of the maximum coding units included in each scanning unit; Encoding a plurality of maximum coding units included in a current picture according to the determined processing order of one or more scanning units and the determined processing order of the maximum coding units included in each scanning unit; Generating information indicating a processing order of at least one scanning unit and information indicating a processing order of the largest coding units included in each scanning unit; And outputting a bitstream of the encoded video including the generated information.
- a video decoding apparatus comprising: a bitstream receiver configured to receive a bitstream of an encoded video; Included in the shape information of one or more scanning units consisting of a predetermined number of adjacent maximum coding units among a plurality of maximum coding units divided from a picture, processing order information of one or more scanning units for the current picture, and one or more scanning units An information obtaining unit obtaining the processing order information of the maximum coding units from the bitstream; And determining a shape of one or more scanning units according to the obtained shape information, determining a processing order of one or more scanning units included in the current picture based on the processing order information of the one or more scanning units, and including the information in one or more scanning units.
- a video decoding apparatus may include a decoder configured to decode a plurality of maximum coding units included in a current picture in order.
- a shape of one or more scanning units including a predetermined number of maximum coding units adjacent to each other among a plurality of maximum coding units divided from a picture is determined, and one included in the current picture Determine a processing order of the at least one scanning unit and a processing order of the largest coding units included in each scanning unit, and determine a current order according to the determined processing order of at least one scanning unit and the determined processing order of the maximum coding units included in each scanning unit.
- An encoder which encodes a plurality of maximum coding units included in a picture;
- An information generating unit for generating information indicating a form of at least one scanning unit, information indicating a processing order of at least one scanning unit, and information indicating a processing order of maximum coding units included in each scanning unit;
- a bitstream output unit configured to output a bitstream of the encoded video including the generated information.
- coding efficiency may be improved through video decoding / coding according to an adaptive scan order using a scanning unit configured of maximum coding units.
- FIG. 1A is a block diagram of a video decoding apparatus, according to an embodiment.
- FIG. 1B is a block diagram of a video encoding apparatus, according to an embodiment.
- 2A to 2D are reference diagrams illustrating types of scanning units according to an exemplary embodiment.
- 3A to 3C illustrate a processing sequence of a scanning unit for a type of scanning unit according to an embodiment.
- 4A to 4C illustrate a processing sequence of maximum coding units included in a scanning unit, according to an exemplary embodiment.
- 5A is a reference diagram for describing a process of determining a processing order of a plurality of scanning units included in a current picture, according to an embodiment.
- 5B illustrates an intra prediction mode according to an embodiment.
- 5C illustrates a reference sample used for intra prediction of a current block, according to an embodiment.
- 6A to 6B are reference diagrams for describing a process of determining a processing order of a plurality of maximum coding units included in a current scanning unit, according to an embodiment.
- FIG. 7 illustrates mirroring of a sample value of a scanning unit to replace a change of scan order, according to an embodiment.
- FIG. 8 is a flowchart of a video decoding method, according to an embodiment.
- FIG. 9 is a flowchart of a video encoding method, according to an embodiment.
- FIG. 10 illustrates a process of determining at least one coding unit by dividing a current coding unit according to an embodiment.
- FIG. 11 is a diagram illustrating a process of dividing a coding unit having a non-square shape and determining at least one coding unit according to an embodiment.
- FIG. 12 illustrates a process of splitting a coding unit based on at least one of block shape information and split shape information, according to an embodiment.
- FIG. 13 illustrates a method of determining a predetermined coding unit among odd number of coding units according to an embodiment.
- FIG. 14 illustrates an order in which a plurality of coding units are processed when a current coding unit is divided and a plurality of coding units are determined according to an embodiment.
- FIG. 15 illustrates a process of determining that a current coding unit is divided into odd coding units when the coding units cannot be processed in a predetermined order, according to an embodiment.
- 16 is a diagram illustrating a process of determining at least one coding unit by dividing a first coding unit according to an embodiment.
- FIG. 17 illustrates that a form in which a second coding unit may be split is limited when the second coding unit having a non-square shape determined by splitting the first coding unit satisfies a predetermined condition according to an embodiment. .
- FIG. 18 illustrates a process of splitting a coding unit having a square shape when split information cannot be divided into four square coding units according to an embodiment.
- FIG. 19 illustrates that a processing order between a plurality of coding units may vary according to a splitting process of coding units, according to an embodiment.
- 20 is a diagram illustrating a process of determining a depth of a coding unit as a shape and a size of a coding unit change when a coding unit is recursively divided and a plurality of coding units are determined according to an embodiment.
- FIG. 21 illustrates a depth index and a part index (PID) for classifying coding units, which may be determined according to shapes and sizes of coding units, according to an embodiment.
- PID part index
- FIG. 22 illustrates that a plurality of coding units are determined according to a plurality of predetermined data units included in a picture according to an embodiment.
- FIG. 23 illustrates a processing block serving as a reference for determining a determination order of reference coding units included in a picture, according to an embodiment.
- a video decoding method comprising: receiving a bitstream of an encoded video; Obtaining shape information of at least one scanning unit composed of a predetermined number of adjacent maximum coding units among a plurality of maximum coding units divided from a picture, from the bitstream; Determining a shape of one or more scanning units according to the obtained shape information; Obtaining processing order information of at least one scanning unit for the current picture and processing order information of maximum coding units included in the at least one scanning unit from the bitstream; Determining a processing order of at least one scanning unit included in the current picture based on the processing order information of the at least one scanning unit; Determining a processing order of the largest coding units included in each scanning unit based on processing order information of the maximum coding units included in the one or more scanning units; And decoding the plurality of maximum coding units included in the current picture according to the determined processing order of one or more scanning units and the determined processing order of the maximum coding units included in each scanning unit. This may be provided.
- the maximum coding unit is hierarchically divided into one or more coding units having a depth, and a coding unit of the current depth is divided into coding units of a lower depth independently of neighboring coding units. Coding units of the current depth of a coding unit may be decoded according to a processing order of the coding unit determined for each maximum coding unit.
- the determining of the shape of the one or more scanning units may include determining the entire picture as one scanning unit.
- the determining of the shape of the one or more scanning units may include determining each row of the largest coding units in the picture as one scanning unit.
- the determining of the processing order of the one or more scanning units included in the current picture may include any of an order of processing downward from an uppermost scanning unit or an order of processing upward from a lowermost scanning unit.
- the method may include determining one as a processing order of the one or more scanning units, and determining the processing order of the maximum coding units included in each of the scanning units may include a leftmost maximum in a row of the maximum coding units. Determining a processing order of the maximum coding units included in each scanning unit, either the order of processing from the coding unit to the right or the order of processing from the rightmost maximum coding unit to the left in the row of the maximum coding units; It may include.
- the determining of the shape of the one or more scanning units may include determining the maximum coding units of NxM as one scanning unit.
- the determining of the processing order of the one or more scanning units included in the current picture may include: raster scan order, reverse order of the raster scan order, the raster scan order and the horizontal order are the same, and the vertical order Determining a processing order of the one or more scanning units, wherein the processing order of the one or more scanning units is one of a reverse processing order, and a processing order in which the raster scan order and the vertical direction order are the same and the horizontal direction order is the opposite;
- the determining of the processing order of the maximum coding units included in each scanning unit may include: processing of the raster scan order, the reverse order of the raster scan order, the raster scan order and the horizontal direction order being the same, and the vertical direction order being the opposite. And a processing order of the maximum coding units included in each scanning unit may be determined as one of an order and a processing order in which the raster scan order and the vertical order are the same and the horizontal order is the opposite.
- the determining of the processing order of the one or more scanning units included in the current picture may include extracting edge information included in the previous picture from sample values of a previous picture;
- the determining of the processing order of the one or more scanning units included in the current picture may include generating statistics of an intra prediction mode used when decoding a previous picture; Determining a representative value of an intra prediction mode of the previous picture based on the statistics; And determining a processing order corresponding to the determined representative value among the candidate processing orders available in the current picture as the processing order of the one or more scanning units.
- the determining of the processing order of the one or more scanning units included in the current picture may include: generating a statistical value of a processing order of the coding unit for all maximum coding units included in a previous picture; Determining a representative value of a processing order of the coding units of the previous picture based on the statistics; And determining a processing order corresponding to the determined representative value among the candidate processing orders available in the current picture as the processing order of the one or more scanning units.
- the determining of the processing order of the largest coding units included in each scanning unit may include: scanning unit co-located in a previous picture or neighboring scanning adjacent to a current scanning unit in the current picture. Extracting edge information from sample values of a unit; Determining a representative value of the edge information direction based on the extracted edge information direction; And determining a processing order corresponding to the determined representative value among the candidate processing orders available in the current scanning unit as the processing order of the maximum coding units included in the current scanning unit.
- the determining of the processing order of the largest coding units included in each scanning unit may include decoding a scanning unit at a same position in a previous picture or a neighboring scanning unit adjacent to a current scanning unit in the current picture. Generating statistics of an intra prediction mode used; Determining a representative value of the intra prediction mode based on the statistics; And determining a processing order corresponding to the determined representative value among the candidate processing orders available in the current scanning unit as the processing order of the maximum coding units included in the current scanning unit.
- the determining of the processing order of the largest coding units included in each scanning unit may include determining all of the neighboring scanning units adjacent to the scanning unit at the same position in the previous picture or the neighboring scanning unit in the current picture. Generating a statistical value of a processing order of the coding units for the largest coding units; Determining a representative value of a processing order of the coding unit based on the statistics; And determining a processing order corresponding to the determined representative value among the candidate processing orders available in the current scanning unit as the processing order of the maximum coding units included in the current scanning unit.
- a video decoding apparatus comprising: a bitstream receiver configured to receive a bitstream of an encoded video; Included in the shape information of one or more scanning units consisting of a predetermined number of adjacent maximum coding units among a plurality of maximum coding units divided from a picture, processing order information of one or more scanning units for the current picture, and one or more scanning units An information obtaining unit obtaining the processing order information of the maximum coding units from the bitstream; And determining a shape of one or more scanning units according to the obtained shape information, determining a processing order of one or more scanning units included in the current picture based on the processing order information of the one or more scanning units, and including the information in one or more scanning units.
- a video decoding apparatus may include a decoder configured to decode a plurality of maximum coding units included in a current picture in order.
- a video encoding method comprising: determining a shape of one or more scanning units including a predetermined number of adjacent maximum coding units among a plurality of maximum coding units divided from a picture; Generating information indicative of the form of one or more scanning units; Determining a processing order of one or more scanning units included in the current picture and a processing order of the maximum coding units included in each scanning unit; Encoding a plurality of maximum coding units included in a current picture according to the determined processing order of one or more scanning units and the determined processing order of the maximum coding units included in each scanning unit; Generating information indicating a processing order of at least one scanning unit and information indicating a processing order of the largest coding units included in each scanning unit; And outputting a bitstream of the encoded video including the generated information.
- a shape of one or more scanning units including a predetermined number of maximum coding units adjacent to each other among a plurality of maximum coding units divided from a picture is determined, and one included in the current picture Determine a processing order of the at least one scanning unit and a processing order of the largest coding units included in each scanning unit, and determine a current order according to the determined processing order of at least one scanning unit and the determined processing order of the maximum coding units included in each scanning unit.
- An encoder which encodes a plurality of maximum coding units included in a picture;
- An information generating unit for generating information indicating a form of at least one scanning unit, information indicating a processing order of at least one scanning unit, and information indicating a processing order of maximum coding units included in each scanning unit;
- a bitstream output unit configured to output a bitstream of the encoded video including the generated information.
- part refers to a hardware component, such as software, FPGA or ASIC, and “part” plays certain roles. However, “part” is not meant to be limited to software or hardware.
- the “unit” may be configured to be in an addressable storage medium and may be configured to play one or more processors.
- a “part” refers to components such as software components, object-oriented software components, class components, and task components, processes, functions, properties, procedures, Subroutines, segments of program code, drivers, firmware, microcode, circuits, data, databases, data structures, tables, arrays and variables.
- the functionality provided within the components and “parts” may be combined into a smaller number of components and “parts” or further separated into additional components and “parts”.
- the "image” may be a static image such as a still image of a video or may represent a dynamic image such as a video, that is, the video itself.
- sample means data to be processed as data allocated to a sampling position of an image.
- pixel values and transform coefficients on a transform region may be samples in an image of a spatial domain.
- a unit including the at least one sample may be defined as a block.
- FIG. 1A is a block diagram of a video decoding apparatus 100 according to an embodiment.
- the video decoding apparatus 100 may include a bitstream receiver 110, an information acquirer 120, and a decoder 130.
- the bitstream receiver 110 may receive a bitstream of the encoded video.
- the information acquisition unit 120 may include shape information of one or more scanning units including a predetermined number of adjacent maximum coding units among a plurality of maximum coding units split from a picture, processing order information of one or more scanning units for a current picture, And processing order information of the largest coding units included in the one or more scanning units from the bitstream.
- the decoder 130 determines the shape of one or more scanning units according to the obtained shape information, and determines the processing order of one or more scanning units included in the current picture based on the processing order information of the one or more scanning units, The processing order of the maximum coding units included in each scanning unit is determined based on the processing order information of the maximum coding units included in the scanning units, and the determined processing order of the one or more scanning units and the maximum included in each scanning unit. A plurality of maximum coding units included in the current picture may be decoded according to the determined processing order of the coding units.
- FIG. 1B is a block diagram of a video encoding apparatus 150 according to an embodiment.
- the video encoding apparatus 150 may include an encoder 160, an information generator 170, and a bitstream output unit 180.
- the encoder 160 determines the shape of one or more scanning units including a predetermined number of maximum coding units adjacent to each other among a plurality of maximum coding units divided from the picture, and processes one or more scanning units included in the current picture. Determine a processing order of the largest coding units included in each scanning unit, and determine a plurality of processing units included in the current picture according to the determined processing order of one or more scanning units and the determined processing order of the maximum coding units included in each scanning unit. Maximum coding units of may be encoded.
- the information generating unit 170 may generate information indicating a form of one or more scanning units, information indicating a processing order of one or more scanning units, and information indicating a processing order of maximum coding units included in each scanning unit. .
- the bitstream output unit 180 may output a bitstream of the encoded video including the generated information.
- 2A to 2D are reference diagrams illustrating types of scanning units according to an exemplary embodiment.
- the scanning unit may be configured of a predetermined number of maximum coding units adjacent to each other among a plurality of maximum coding units divided from a picture.
- the maximum coding unit may be hierarchically divided into one or more coding units having a depth, and the coding unit of the current depth may be split into coding units of a lower depth independently of neighboring coding units. have. Coding units of the current depth of the largest coding unit may be decoded according to a processing order of the coding unit determined for each largest coding unit.
- an entire picture may be determined as one scanning unit.
- one picture may be divided into a plurality of maximum coding units 202 according to the size of a maximum coding unit, and the shape of the scanning unit 200 may be a plurality of maximum codings. It may be determined as one picture composed of units 202 and have the same size as the picture.
- each row composed of the largest coding units may be determined as one scanning unit. For example, as illustrated in FIG. 2B, a predetermined number of maximum coding units 202 among a plurality of maximum coding units for dividing a picture may form one row in the picture.
- the shape of the scanning unit 200 may be determined as one row formed by a predetermined number of maximum coding units 202. A plurality of scanning units 200 having the above shape may be gathered to form one picture.
- the maximum coding units of NxM may be determined as one scanning unit.
- N and M are both integers of 2 or more and may be the same or different from each other.
- one scanning unit 200 may be configured of 2 ⁇ 2 coding units 202 having a square shape.
- one scanning unit 200 may be configured of 3 ⁇ 3 coding units having a square shape.
- the shape of the scanning unit 200 is not limited to a square shape, and may be rectangular, such as when N and M are different from each other.
- a plurality of scanning units 200 having the above-described shape may be gathered to form one picture.
- 3A to 3C illustrate a processing sequence of a scanning unit for a type of scanning unit according to an embodiment.
- the processing order of the scanning units may be determined differently for each picture.
- each row composed of the largest coding units may be determined as one scanning unit.
- the processing order of one or more scanning units included in the current picture may be a processing order 304 or a downward processing from the uppermost scanning unit 300. It may be determined by any one of the order 306 of processing in the upward direction from the lowermost scanning unit 302.
- the maximum coding units of NxM may be determined as one scanning unit.
- the processing order of one or more scanning units included in the current picture is the raster scan order 314, the reverse order 316 of the raster scan order, the raster scan order and the vertical order are the same.
- the horizontal order may be determined as one of the reverse processing order 324, and the raster scan order and the horizontal order are the same, and the vertical order may be reversed.
- the raster scan order 314 may be a predetermined order in which scanning units located in one row are processed after scanning units located in one row are processed in a right direction.
- the raster scan order 314 may begin with the scanning unit 310 located at the top left corner of the picture and end at the scanning unit 312 located at the bottom right corner of the picture, as shown in FIG. 3B.
- the raster scan order 314 may also be applied to 2x2 arrays, 1xN arrays, and Nx1 arrays according to the criteria described above.
- the reverse order 316 of the raster scan order may be a predetermined order in which the scanning units located in one row are processed after the scanning units located in one row are processed in the left direction.
- the reverse order 316 of the raster scan order may begin at the scanning unit 312 located at the lower right corner of the picture and end at the scanning unit 310 located at the upper left corner of the picture, as shown in FIG. 3B. .
- the processing sequence 324 may be a predetermined order in which scanning units located in one row are processed after scanning units located in one row are processed in a left direction.
- the processing sequence 324 may begin with the scanning unit 320 located at the top right corner of the picture and end at the scanning unit 322 located at the bottom left corner of the picture, as shown in FIG. 3C.
- the processing order 326 may be a predetermined order in which the scanning units located in the above row are processed after the scanning units located in the one row are processed in the right direction.
- the processing sequence 326 may begin at the scanning unit 322 located at the lower left corner of the picture and end at the scanning unit 320 located at the upper right corner of the picture, as shown in FIG. 3C.
- 4A to 4C illustrate a processing sequence of maximum coding units included in a scanning unit, according to an exemplary embodiment.
- the processing order of the largest coding units included in the scanning unit may be differently determined for each scanning unit.
- each row composed of the largest coding units may be determined as one scanning unit.
- the processing order of the largest coding units included in each scanning unit may be a processing order 408 or a maximum coding unit from the leftmost maximum coding unit in the row of the maximum coding units to the right.
- One of the order 406 of processing from the rightmost largest coding unit to the left in the row of these may be determined.
- the processing order of the maximum coding units included in the scanning unit 400 may be determined as an order 406 of processing from the rightmost maximum coding unit to the left side in the row of the maximum coding units.
- the processing order of the maximum coding units in the scanning units 402 and 404 may be determined as an order 408 of processing from the leftmost maximum coding unit to the right in the row of the maximum coding units.
- the maximum coding units of NxM may be determined as one scanning unit.
- the processing order of the maximum coding units included in each scanning unit is the raster scan order, the reverse order of the raster scan order, the raster scan order and the vertical direction are the same, and the horizontal order is the opposite.
- the processing order, and the raster scan order and the horizontal direction order are the same, and the vertical direction order may be determined by any of the reverse processing order.
- the raster scan order, the reverse order of the raster scan order, the processing order in which the raster scan order and the vertical order are the same and the horizontal order are opposite, and the raster scan order and the horizontal order are the same and the vertical order is
- the reverse processing order may be the same order as described with reference to FIGS. 3B and 3C, and thus a detailed description thereof will be omitted.
- the processing order of the largest coding units included in the scanning units 410 and 420 may be determined in a raster scan order, and the maximum coding included in the scanning units 416 and 426.
- the processing order of the units may be determined in the reverse order of the raster scan order, and the processing order of the maximum coding units included in the scanning units 412 and 422 may be the same as the raster scan order and the vertical order, and the horizontal order is the opposite.
- the processing order of the largest coding units included in the scanning units 414 and 424 may be determined as a processing order in which the raster scan order and the horizontal direction order are the same and the vertical direction order is the opposite.
- 5A is a reference diagram for describing a process of determining a processing order of a plurality of scanning units included in a current picture, according to an embodiment.
- the processing order of the determined coding unit may be generated.
- the representative value of the processing order of the coding unit may be determined for the previous picture based on the generated statistical value.
- the representative value may be an average value, a mode value, a weighted average value, or the like.
- the processing order corresponding to the determined representative value among the candidate processing orders available in the current pictures 500 and 502 may be determined as the processing order of the scanning unit included in the current picture.
- the processing order of coding units determined for each largest coding unit may include a raster scan order, a reverse order of the raster scan order, a processing order in which the raster scan order and the vertical direction are the same, and the horizontal order is the opposite, and the raster scan
- the order and the horizontal order may be the same, and the vertical order may be any one of the reverse processing order.
- the statistical value of the intra prediction mode used when decoding the previous picture is generated and used as the representative value, or the sample of the previous picture is used.
- the representative value of the edge information direction may be used by extracting edge information included in the previous picture from the values.
- the information used to determine the processing order of one or more scanning units included in the current picture is not limited to the above-described embodiment, but is not limited to the prediction unit partition, the intra / inter prediction selection ratio, the QP value, the transform unit size, and the encoding.
- Various information including depth of a unit, coding unit size, motion information, deblocking / SAO filtering information, and the like may be used.
- the region from which information used for determining the processing order of one or more scanning units included in the current picture is extracted is not limited to the previous picture, but various regions may be used.
- 5B illustrates an intra prediction mode according to an embodiment.
- the statistics of the intra prediction mode used when decoding the previous picture may be used to determine the processing order of one or more scanning units included in the current picture.
- the intra prediction angles represented by the prediction modes 2 to 34 include an angle 510 indicating a right range and a lower range as illustrated in FIG. 5B.
- An angle 512 indicating is excluded.
- 5C illustrates a reference sample used for intra prediction of a current block, according to an embodiment.
- the processing order of the scanning units included in the current picture is determined upward from the lowermost scanning unit, and after the processing of the maximum coding units included in the scanning unit 521 is completed, the current block 520.
- the processing of the scanning unit 522 including a is performed in the left direction 524 from the rightmost maximum coding unit. Accordingly, the processing of the pixels 523 adjacent to the bottom of the current block 520 and the pixels 525 adjacent to the right of the current block 520 is completed, so as to reference samples in the intra prediction of the current block 520. Can be used.
- a reference sample used for intra prediction of the current block is adjacent to a lower part of the current block. It may extend to pixels and pixels adjacent to the right side of the current block. Accordingly, the intra prediction mode corresponding to the angle 510 indicating the right range and the angle 512 indicating the lower range, which could not be used in HEVC, can be used.
- 6A to 6B are reference diagrams for describing a process of determining a processing order of a plurality of maximum coding units included in a current scanning unit, according to an embodiment.
- the current scanning unit 602 is in the form of a line
- the current scanning unit 612 is in the form of 2 ⁇ 2 maximum coding units.
- an area used to determine a processing order of a plurality of maximum coding units included in the current scanning unit 602 may be a co-located scanning unit 603 in a previous picture. 613 and one or more of the peripheral scanning units 604, 606, and 614 adjacent to the current scanning unit 602 in the current picture.
- the region used to determine the processing order of the plurality of maximum coding units included in the current scanning unit is not limited to the above embodiment, and various regions may be used.
- the information used to determine the processing order of the plurality of maximum coding units included in the current scanning unit includes edge information extracted from sample values of a predetermined region, statistics of intra prediction mode information used when decoding a predetermined region, and a predetermined region. It may be a statistical value of a processing order of coding units determined for each largest coding unit for, but is not limited thereto.
- FIG. 7 illustrates mirroring a sample value of a scanning unit to replace a change in scan order, according to one embodiment.
- the processing order of the largest coding units included in the scanning units 701 and 702 of the line-shaped scanning units included in the picture 700 may be based on the rightmost largest coding unit in the row of the maximum coding units. It may be determined in the order of processing to the left.
- the arrangement of sample values of the scanning units 701 and 702 corresponds to 1, 2, 3..., And A, B, C ... from the left.
- the array of sample values of the scanning units 703 and 704 mirroring the sample values of the scanning units 701 and 702 symmetrically corresponds to 1, 2, 3 ... and A, B, C ... from the right side. do.
- the processing order of the largest coding units included in the scanning units 703 and 704 may be different from the processing order of the scanning units 701 and 702. It can be determined in the reverse.
- the encoding / decoding result of the picture 705 to which some of the scanning units 703 and 704 are mirrored may be the same as the encoding / decoding result of the picture 700 in which the processing order of the some scanning units 701 and 702 is determined in reverse. have. That is, the change of the scan order may be replaced by mirroring the sample value of the scanning unit.
- FIG. 8 is a flowchart of a video decoding method, according to an embodiment.
- the bitstream receiver 110 of the video decoding apparatus 100 may receive a bitstream of an encoded video.
- the information acquisition unit 120 of the video decoding apparatus 100 may bitmap shape information of one or more scanning units including a predetermined number of maximum coding units adjacent to each other among a plurality of maximum coding units split from a picture. Can be obtained from
- the decoder 130 of the video decoding apparatus 100 may determine the shape of one or more scanning units according to the obtained shape information.
- the information acquisition unit 120 of the video decoding apparatus 100 obtains processing order information of at least one scanning unit for the current picture and processing order information of maximum coding units included in the at least one scanning unit from the bitstream. can do.
- the decoder 130 of the video decoding apparatus 100 may determine a processing order of one or more scanning units included in the current picture based on processing order information of one or more scanning units.
- the decoder 130 of the video decoding apparatus 100 may determine the processing order of the maximum coding units included in each scanning unit based on the processing order information of the maximum coding units included in the one or more scanning units. have.
- the decoder 130 of the video decoding apparatus 100 may determine a plurality of maximums included in the current picture according to the determined processing order of one or more scanning units and the determined processing order of the maximum coding units included in each scanning unit. Coding units may be decoded.
- FIG. 9 is a flowchart of a video encoding method, according to an embodiment.
- the encoder 160 of the video encoding apparatus 150 may determine the shape of one or more scanning units including a predetermined number of maximum coding units adjacent to each other among a plurality of maximum coding units split from the picture. .
- the information generating unit 170 of the video encoding apparatus 150 may generate information indicating the form of one or more scanning units.
- the encoder 160 of the video encoding apparatus 150 may determine a processing order of one or more scanning units included in the current picture and a processing order of the maximum coding units included in each scanning unit.
- the encoder 160 of the video encoding apparatus 150 may determine a plurality of maximums included in the current picture according to the determined processing order of one or more scanning units and the determined processing order of the maximum coding units included in each scanning unit. Coding units may be encoded.
- the information generating unit 170 of the video encoding apparatus 150 may generate information indicating a processing order of one or more scanning units and information indicating a processing order of the maximum coding units included in each scanning unit. .
- the bitstream output unit 180 of the video encoding apparatus 150 may output a bitstream of the encoded video including the generated information.
- FIGS. 10 to 23 An operation of the video encoding apparatus 150 may be similar to or opposite to various embodiments of the operation of the video decoding apparatus 100 described later.
- FIG. 10 illustrates a process of determining, by the video decoding apparatus 100, at least one coding unit by dividing a current coding unit according to an embodiment.
- the video decoding apparatus 100 may determine a shape of a coding unit by using block shape information, and may determine in which form the coding unit is divided by using split shape information. That is, the method of dividing the coding unit indicated by the segmentation form information may be determined according to which block form the block form information used by the video decoding apparatus 100 indicates.
- the video decoding apparatus 100 may use block shape information indicating that a current coding unit is square. For example, the video decoding apparatus 100 may determine whether to split a square coding unit, to split vertically, to split horizontally, or to split into four coding units according to the split type information. Referring to FIG. 10, when the block shape information of the current coding unit 1000 indicates a square shape, the video decoding apparatus 100 may have the same size as the current coding unit 1000 according to the split shape information indicating that the block shape information is not divided.
- the coding units 1010a having a may not be divided or split coding units 1010b, 1010c, and 1010d may be determined based on split type information indicating a predetermined division method.
- the video decoding apparatus 100 determines two coding units 1010b that split the current coding unit 1000 in the vertical direction based on split shape information indicating that the video decoding apparatus 100 is split in the vertical direction. Can be.
- the video decoding apparatus 100 may determine two coding units 1010c obtained by dividing the current coding unit 1000 in the horizontal direction, based on the split type information indicating the split in the horizontal direction.
- the video decoding apparatus 100 may determine four coding units 1010d obtained by dividing the current coding unit 1000 in the vertical direction and the horizontal direction based on the split type information indicating that the video decoding apparatus 100 is split in the vertical direction and the horizontal direction.
- the divided form in which the square coding unit may be divided should not be limited to the above-described form and may include various forms represented by the divided form information. Certain division forms in which a square coding unit is divided will be described in detail with reference to various embodiments below.
- FIG. 11 illustrates a process of determining, by the video decoding apparatus 100, at least one coding unit by dividing a coding unit having a non-square shape by the video decoding apparatus 100.
- the video decoding apparatus 100 may use block shape information indicating that a current coding unit is a non-square shape.
- the video decoding apparatus 100 may determine whether to divide the current coding unit of the non-square according to the segmentation type information or to split it by a predetermined method. Referring to FIG. 11, when the block shape information of the current coding unit 1100 or 1150 indicates a non-square shape, the video decoding apparatus 100 may not split the current coding unit 1100 according to the split shape information.
- coding units 1110a, 1120b, 1130a, 1130b, 1130c, 1170a which do not divide the coding units 1110 or 1160 having the same size as that of 1150, or are divided based on the split type information indicating a predetermined division method.
- 1170b, 1180a, 1180b, and 1180c may be determined.
- a predetermined division method in which a non-square coding unit is divided will be described in detail with reference to various embodiments below.
- the video decoding apparatus 100 may determine a shape in which a coding unit is divided by using split shape information.
- the split shape information may include the number of at least one coding unit generated by splitting the coding unit. Can be represented.
- the video decoding apparatus 100 may determine a current coding unit 1100 or 1150 based on split shape information. By splitting, two coding units 1120a, 11420b, or 1170a and 1170b included in the current coding unit may be determined.
- the video decoding apparatus 100 may determine the current coding unit 1100 or 1150 of the non-square shape.
- the current coding unit may be split in consideration of the position of the long side. For example, the video decoding apparatus 100 splits the current coding unit 1100 or 1150 in a direction of dividing a long side of the current coding unit 1100 or 1150 in consideration of the shape of the current coding unit 1100 or 1150. To determine a plurality of coding units.
- the video decoding apparatus 100 may determine an odd number of coding units included in the current coding unit 1100 or 1150. For example, when the split type information indicates that the current coding unit 1100 or 1150 is divided into three coding units, the video decoding apparatus 100 may divide the current coding unit 1100 or 1150 into three coding units 1130a. , 1130b, 1130c, 1180a, 1180b, and 1180c. According to an embodiment, the video decoding apparatus 100 may determine an odd number of coding units included in the current coding unit 1100 or 1150, and not all sizes of the determined coding units may be the same.
- the size of a predetermined coding unit 1130b or 1180b among the determined odd coding units 1130a, 1130b, 1130c, 1180a, 1180b, and 1180c may be different from other coding units 1130a, 1130c, 1180a, and 1180c. May have That is, a coding unit that may be determined by dividing the current coding unit 1100 or 1150 may have a plurality of types, and in some cases, odd number of coding units 1130a, 1130b, 1130c, 1180a, 1180b, and 1180c. Each may have a different size.
- the video decoding apparatus 100 may determine an odd number of coding units included in the current coding unit 1100 or 1150.
- the video decoding apparatus 100 may set a predetermined limit on at least one coding unit among odd-numbered coding units generated by splitting.
- the video decoding apparatus 100 is a coding unit positioned at the center of three coding units 1130a, 1130b, 1130c, 1180a, 1180b, and 1180c generated by splitting a current coding unit 1100 or 1150.
- the decoding process for (1130b, 1180b) may be different from other coding units 1130a, 1130c, 1180a, and 1180c.
- the video decoding apparatus 100 restricts the coding units 1130b and 1180b from being no longer divided or only a predetermined number of times. You can limit it to split.
- FIG. 12 illustrates a process of splitting a coding unit by the video decoding apparatus 100 based on at least one of block shape information and split shape information, according to an embodiment.
- the video decoding apparatus 100 may determine to split or not split the first coding unit 1200 having a square shape into coding units based on at least one of block shape information and split shape information.
- the video decoding apparatus 100 splits the first coding unit 1200 in the horizontal direction to thereby split the second coding unit. 1210 may be determined.
- the first coding unit, the second coding unit, and the third coding unit used according to an embodiment are terms used to understand a before and after relationship between the coding units.
- the first coding unit is split, the second coding unit may be determined.
- the third coding unit may be determined.
- the relationship between the first coding unit, the second coding unit, and the third coding unit used is based on the above-described feature.
- the video decoding apparatus 100 may determine to divide or not split the determined second coding unit 1210 into coding units based on at least one of block shape information and split shape information. Referring to FIG. 12, the video decoding apparatus 100 may determine a second coding unit 1210 having a non-square shape determined by dividing the first coding unit 1200 based on at least one of block shape information and split shape information. It may be divided into at least one third coding unit 1220a, 1220b, 1220c, 1220d, or the like, or may not split the second coding unit 1210.
- the video decoding apparatus 100 may obtain at least one of block shape information and split shape information, and the video decoding apparatus 100 may determine the first coding unit 1200 based on at least one of the obtained block shape information and split shape information. ) May be divided into a plurality of second coding units (eg, 1210) of various types, and the second coding unit 1210 may be configured to perform first encoding based on at least one of block shape information and split shape information.
- the unit 1200 may be divided according to the divided manner.
- the second The coding unit 1210 may also be divided into third coding units (eg, 1220a, 1220b, 1220c, 1220d, etc.) based on at least one of block shape information and split shape information of the second coding unit 1210. have. That is, the coding unit may be recursively divided based on at least one of the partition shape information and the block shape information associated with each coding unit.
- a square coding unit may be determined in a non-square coding unit, and a coding unit of a square shape may be recursively divided to determine a coding unit of a non-square shape.
- a predetermined coding unit eg, located in the middle of odd-numbered third coding units 1220b, 1220c, and 1220d determined by dividing a second coding unit 1210 having a non-square shape
- Coding units or coding units having a square shape may be recursively divided.
- the third coding unit 1220c having a square shape which is one of odd third coding units 1220b, 1220c, and 1220d, may be divided in a horizontal direction and divided into a plurality of fourth coding units.
- the fourth coding unit 1240 having a non-square shape which is one of the plurality of fourth coding units, may be divided into a plurality of coding units.
- the fourth coding unit 1240 having a non-square shape may be divided into odd coding units 1250a, 1250b, and 1250c.
- the video decoding apparatus 100 splits each of the third coding units 1220a, 1220b, 1220c, 1220d, etc. into coding units based on at least one of block shape information and split shape information, or performs second encoding. It may be determined that the unit 1210 is not divided. According to an embodiment, the video decoding apparatus 100 may divide the second coding unit 1210 having a non-square shape into an odd number of third coding units 1220b, 1220c, and 1220d. The video decoding apparatus 100 may place a predetermined limit on a predetermined third coding unit among odd third coding units 1220b, 1220c, and 1220d.
- the video decoding apparatus 100 may be limited to the number of coding units 1220c positioned in the middle of the odd number of third coding units 1220b, 1220c, and 1220d, or may be divided by a set number of times. It can be limited to.
- the video decoding apparatus 100 may include a coding unit positioned at the center of odd-numbered third coding units 1220b, 1220c, and 1220d included in a second coding unit 1210 having a non-square shape.
- the 1220c is no longer divided, or is limited to being divided into a predetermined division form (for example, only divided into four coding units or divided into a form corresponding to the divided form of the second coding unit 1210), or It can be limited to dividing only by the number of times (eg, dividing only n times, n> 0).
- the above limitation on the coding unit 1220c located in the center is merely a mere embodiment and should not be construed as being limited to the above-described embodiments, and the coding unit 1220c located in the center may be different from the coding units 1220b and 1220d. ), It should be interpreted as including various restrictions that can be decoded.
- the video decoding apparatus 100 may obtain at least one of block shape information and split shape information used to split a current coding unit at a predetermined position in the current coding unit.
- FIG. 13 illustrates a method for the video decoding apparatus 100 to determine a predetermined coding unit from an odd number of coding units, according to an exemplary embodiment.
- at least one of the block shape information and the split shape information of the current coding unit 1300 may be a sample of a predetermined position (for example, located at the center of a plurality of samples included in the current coding unit 1300). Sample 1340).
- a predetermined position in the current coding unit 1300 from which at least one of such block shape information and split shape information may be obtained should not be interpreted as being limited to the center position shown in FIG. 13, and the current coding unit 1300 is located at the predetermined position.
- the video decoding apparatus 100 may obtain at least one of block shape information and split shape information obtained from a predetermined position, and determine that the current coding unit is divided or not divided into coding units having various shapes and sizes.
- the video decoding apparatus 100 may select one coding unit from among them. Methods for selecting one of a plurality of coding units may vary, which will be described below through various embodiments.
- the video decoding apparatus 100 may divide a current coding unit into a plurality of coding units and determine a coding unit of a predetermined position.
- FIG. 13 illustrates a method for the video decoding apparatus 100 to determine a coding unit of a predetermined position from an odd number of coding units, according to an embodiment.
- the video decoding apparatus 100 may use information indicating the position of each of the odd coding units to determine a coding unit located in the middle of the odd coding units. Referring to FIG. 13, the video decoding apparatus 100 may determine an odd number of coding units 1320a, 1320b, and 1320c by dividing the current coding unit 1300. The video decoding apparatus 100 may determine the center coding unit 1320b by using information about the positions of the odd number of coding units 1320a, 1320b, and 1320c. For example, the video decoding apparatus 100 determines the positions of the coding units 1320a, 1320b, and 1320c based on information indicating the positions of predetermined samples included in the coding units 1320a, 1320b, and 1320c.
- the coding unit 1320b positioned at may be determined. Specifically, the video decoding apparatus 100 is based on the information indicating the position of the samples 1330a, 1330b, 1330c in the upper left of the coding units 1320a, 1320b, 1320c of the coding units 1320a, 1320b, 1320c. By determining the position, the coding unit 1320b positioned in the center may be determined.
- the information indicating the positions of the samples 1330a, 1330b, and 1330c in the upper left included in the coding units 1320a, 1320b, and 1320c, respectively may be located in the pictures of the coding units 1320a, 1320b, and 1320c. Or it may include information about the coordinates. According to an embodiment, the information indicating the positions of the samples 1330a, 1330b, and 1330c in the upper left included in the coding units 1320a, 1320b, and 1320c, respectively, may be included in the coding units 1320a and 1320b in the current coding unit 1300.
- the video decoding apparatus 100 may directly use information about the position or coordinates in the pictures of the coding units 1320a, 1320b, and 1320c, or may obtain information about the width or height of the coding unit corresponding to the difference between the coordinates. By using this, the coding unit 1320b located in the center can be determined.
- the information indicating the position of the sample 1330a at the upper left of the upper coding unit 1320a may indicate (xa, ya) coordinates, and the sample 1330b at the upper left of the middle coding unit 1320b.
- the information indicating the position of) may indicate the (xb, yb) coordinates, and the information indicating the position of the sample 1330c on the upper left of the lower coding unit 1320c may indicate the (xc, yc) coordinates.
- the video decoding apparatus 100 may determine the center coding unit 1320b using the coordinates of the samples 1330a, 1330b, and 1330c in the upper left included in the coding units 1320a, 1320b, and 1320c, respectively.
- a coding unit 1320b including (xb, yb), which is the coordinate of the sample 1330b located in the center May be determined as a coding unit located in the middle of the coding units 1320a, 1320b, and 1320c determined by splitting the current coding unit 1300.
- the coordinates indicating the positions of the samples 1330a, 1330b, and 1330c at the upper left may indicate coordinates indicating the absolute positions in the picture, and further, the positions of the samples 1330a at the upper left of the upper coding unit 1320a.
- the (dxb, dyb) coordinate which is information indicating the relative position of the upper left sample 1330b of the middle coding unit 1320b, and the relative position of the upper left sample 1330c of the lower coding unit 1320c.
- Information (dxc, dyc) coordinates can also be used.
- the method of determining the coding unit of a predetermined position by using the coordinates of the sample as information indicating the position of the sample included in the coding unit should not be interpreted to be limited to the above-described method, and various arithmetic operations that can use the coordinates of the sample are available. It should be interpreted in a way.
- the video decoding apparatus 100 may divide the current coding unit 1300 into a plurality of coding units 1320a, 1320b, and 1320c, and may determine a predetermined reference among the coding units 1320a, 1320b, and 1320c. According to the coding unit can be selected. For example, the video decoding apparatus 100 may select coding units 1320b having different sizes from among coding units 1320a, 1320b, and 1320c.
- the video decoding apparatus 100 may have (xa, ya) coordinates, which are information indicating a position of a sample 1330a at the upper left of the upper coding unit 1320a, and a sample at the upper left of the center coding unit 1320b.
- Coding unit 1320a using (xb, yb) coordinates indicating information of position of (1330b) and (xc, yc) coordinates indicating information of sample 1330c on the upper left of lower coding unit 1320c. 1320b, 1320c) may determine the width or height of each.
- the video decoding apparatus 100 uses (xa, ya), (xb, yb), and (xc, yc), which are coordinates indicating the positions of the coding units 1320a, 1320b, and 1320c, to encode the units 1320a, 1320b, and 1320c. ) Each size can be determined.
- the video decoding apparatus 100 may determine the width of the upper coding unit 1320a as xb-xa and the height as yb-ya. According to an embodiment, the video decoding apparatus 100 may determine the width of the central coding unit 1320b as xc-xb and the height as yc-yb. According to an embodiment, the video decoding apparatus 100 may determine the width or height of the lower coding unit using the width or height of the current coding unit, and the width and height of the upper coding unit 1320a and the center coding unit 1320b. .
- the video decoding apparatus 100 may determine a coding unit having a different size from other coding units based on the width and the height of the determined coding units 1320a, 1320b, and 1320c. Referring to FIG. 13, the video decoding apparatus 100 may determine a coding unit 1320b as a coding unit having a predetermined position while having a size different from that of the upper coding unit 1320a and the lower coding unit 1320c. However, the above-described video decoding apparatus 100 determines a coding unit having a different size from other coding units by using the size of the coding unit determined based on the sample coordinates to determine the coding unit at a predetermined position. In this regard, various processes of determining a coding unit at a predetermined position by comparing the sizes of coding units determined according to predetermined sample coordinates may be used.
- the position of the sample to be considered for determining the position of the coding unit should not be interpreted as being limited to the upper left side described above, but may be interpreted that information on the position of any sample included in the coding unit may be used.
- the video decoding apparatus 100 may select a coding unit of a predetermined position from odd number of coding units determined by dividing the current coding unit in consideration of the shape of the current coding unit. For example, if the current coding unit has a non-square shape having a width greater than the height, the video decoding apparatus 100 may determine the coding unit at a predetermined position in the horizontal direction. That is, the video decoding apparatus 100 may determine one of the coding units having different positions in the horizontal direction and place a restriction on the corresponding coding unit. If the current coding unit has a non-square shape having a height greater than the width, the video decoding apparatus 100 may determine a coding unit of a predetermined position in the vertical direction. That is, the video decoding apparatus 100 may determine one of the coding units having different positions in the vertical direction to limit the corresponding coding unit.
- the video decoding apparatus 100 may use information indicating the positions of each of the even coding units in order to determine the coding unit of the predetermined position among the even coding units.
- the video decoding apparatus 100 may determine an even number of coding units by dividing a current coding unit and determine a coding unit of a predetermined position by using information about the positions of the even coding units.
- a detailed process for this may be a process corresponding to a process of determining a coding unit of a predetermined position (for example, a middle position) among the odd number of coding units described above with reference to FIG.
- a predetermined value for a coding unit of a predetermined position in the splitting process is determined to determine a coding unit of a predetermined position among the plurality of coding units.
- Information is available.
- the video decoding apparatus 100 may determine block shape information and a split shape stored in a sample included in a middle coding unit in a splitting process in order to determine a coding unit positioned in a center among coding units having a plurality of current coding units split. At least one of the information may be used.
- the video decoding apparatus 100 may split the current coding unit 1300 into a plurality of coding units 1320a, 1320b, and 1320c based on at least one of block shape information and split shape information.
- a coding unit 1320b positioned in the center of the plurality of coding units 1320a, 1320b, and 1320c may be determined.
- the video decoding apparatus 100 may determine a coding unit 1320b positioned in the middle in consideration of a position where at least one of block shape information and split shape information is obtained.
- At least one of the block shape information and the split shape information of the current coding unit 1300 may be obtained from a sample 1340 positioned in the center of the current coding unit 1300, and the block shape information and the split shape information may be obtained.
- the coding unit 1320b including the sample 1340 is a coding unit positioned at the center. You can decide.
- the information used to determine the coding unit located in the middle should not be interpreted as being limited to at least one of the block type information and the split type information, and various types of information may be used in the process of determining the coding unit located in the center. Can be.
- predetermined information for identifying a coding unit of a predetermined position may be obtained from a predetermined sample included in the coding unit to be determined.
- the video decoding apparatus 100 may divide a current coding unit 1300 into a plurality of coding units (eg, divided into a plurality of coding units 1320a, 1320b, and 1320c) determined by splitting the current coding unit 1300.
- Block shape information obtained from a sample at a predetermined position (for example, a sample located in the center of the current coding unit 1300) in the current coding unit 1300 to determine a coding unit located in the center of the coding units; At least one of the partition type information may be used. .
- the video decoding apparatus 100 may determine the sample of the predetermined position in consideration of the block block form of the current coding unit 1300, and the video decoding apparatus 100 may determine that the current coding unit 1300 is divided and determined.
- a coding unit 1320b including a sample from which predetermined information (for example, at least one of block shape information and split shape information) may be obtained may be determined.
- predetermined information for example, at least one of block shape information and split shape information
- the video decoding apparatus 100 may determine a sample 1340 positioned in the center of the current coding unit 1300 as a sample from which predetermined information may be obtained.
- the 100 may set a predetermined limit in the decoding process of the coding unit 1320b including the sample 1340.
- the position of the sample from which the predetermined information can be obtained should not be interpreted as being limited to the above-described position, but may be interpreted as samples of arbitrary positions included in the coding unit 1320b to be determined for the purpose of limitation.
- a position of a sample from which predetermined information may be obtained may be determined according to the shape of the current coding unit 1300.
- the block shape information may determine whether the shape of the current coding unit is square or non-square, and determine the position of a sample from which the predetermined information may be obtained according to the shape.
- the video decoding apparatus 100 may be positioned on a boundary that divides at least one of the width and the height of the current coding unit in half using at least one of the information on the width and the height on the current coding unit.
- the sample may be determined as a sample from which predetermined information can be obtained.
- the video decoding apparatus 100 may select one of samples adjacent to a boundary that divides the long side of the current coding unit in half. May be determined as a sample from which information may be obtained.
- the video decoding apparatus 100 when the video decoding apparatus 100 divides a current coding unit into a plurality of coding units, at least one of block shape information and split shape information may be used to determine a coding unit of a predetermined position among the plurality of coding units. You can use one.
- the video decoding apparatus 100 may obtain at least one of block shape information and split shape information from a sample at a predetermined position included in a coding unit, and the video decoding apparatus 100 may split the current coding unit.
- the generated plurality of coding units may be divided using at least one of split shape information and block shape information obtained from a sample of a predetermined position included in each of the plurality of coding units.
- the coding unit may be recursively split using at least one of block shape information and split shape information obtained from a sample of a predetermined position included in each coding unit. Since the recursive division process of the coding unit has been described above with reference to FIG. 12, a detailed description thereof will be omitted.
- the video decoding apparatus 100 may determine at least one coding unit by dividing a current coding unit, and determine a predetermined block (eg, current coding unit) in order of decoding the at least one coding unit. Can be determined according to
- FIG. 14 illustrates an order in which a plurality of coding units are processed when the video decoding apparatus 100 determines a plurality of coding units by dividing a current coding unit.
- the video decoding apparatus 100 determines the second coding units 1410a and 1410b by dividing the first coding unit 1400 in the vertical direction according to the block shape information and the split shape information.
- the second coding units 1430a and 1430b may be determined by dividing the 1400 in the horizontal direction, or the second coding units 1450a, 1450b, 1450c and 1450d by dividing the first coding unit 1400 in the vertical and horizontal directions. Can be determined.
- the video decoding apparatus 100 may determine an order such that the second coding units 1410a and 1410b determined by dividing the first coding unit 1400 in the vertical direction are processed in the horizontal direction 1410c. .
- the video decoding apparatus 100 may determine a processing order of the second coding units 1430a and 1430b determined by dividing the first coding unit 1400 in the horizontal direction, in the vertical direction 1430c.
- the video decoding apparatus 100 processes the coding units for positioning the second coding units 1450a, 1450b, 1450c, and 1450d determined by dividing the first coding unit 1400 in the vertical direction and the horizontal direction, in one row.
- the coding units positioned in the next row may be determined according to a predetermined order (for example, raster scan order or z scan order 1450e).
- the video decoding apparatus 100 may recursively split coding units.
- the video decoding apparatus 100 may determine a plurality of coding units 1410a, 1410b, 1430a, 1430b, 1450a, 1450b, 1450c, and 1450d by dividing the first coding unit 1400.
- Each of the determined coding units 1410a, 1410b, 1430a, 1430b, 1450a, 1450b, 1450c, and 1450d may be recursively divided.
- the method of dividing the plurality of coding units 1410a, 1410b, 1430a, 1430b, 1450a, 1450b, 1450c, and 1450d may correspond to a method of dividing the first coding unit 1400. Accordingly, the plurality of coding units 1410a, 1410b, 1430a, 1430b, 1450a, 1450b, 1450c, and 1450d may be independently divided into a plurality of coding units. Referring to FIG. 14, the video decoding apparatus 100 may determine the second coding units 1410a and 1410b by dividing the first coding unit 1400 in the vertical direction, and further, respectively, the second coding units 1410a and 1410b. It can be decided to split independently or not.
- the video decoding apparatus 100 may divide the second coding unit 1410a on the left side into horizontal units and divide the second coding unit 1420a and 1420b on the right side, and the second coding unit 1410b on the right side. ) May not be divided.
- the processing order of coding units may be determined based on a split process of the coding units.
- the processing order of the divided coding units may be determined based on the processing order of the coding units immediately before being split.
- the video decoding apparatus 100 may independently determine the order in which the third coding units 1420a and 1420b determined by splitting the second coding unit 1410a on the left side are processed independently of the second coding unit 1410b on the right side. Since the second coding unit 1410a on the left is divided in the horizontal direction to determine the third coding units 1420a and 1420b, the third coding units 1420a and 1420b may be processed in the vertical direction 1420c.
- the third coding unit included in the second coding unit 1410a on the left side corresponds to the horizontal direction 1410c
- the right coding unit 1410b may be processed.
- FIG. 15 illustrates a process of determining that a current coding unit is divided into an odd number of coding units when the video decoding apparatus 100 cannot process the coding units in a predetermined order, according to an embodiment.
- the video decoding apparatus 100 may determine that the current coding unit is divided into odd coding units based on the obtained block shape information and the split shape information.
- a first coding unit 1500 having a square shape may be divided into second coding units 1510a and 1510b having a non-square shape, and each of the second coding units 1510a and 1510b may be independently formed.
- the video decoding apparatus 100 may determine a plurality of third coding units 1520a and 1520b by dividing the left coding unit 1510a in the horizontal direction among the second coding units, and may include the right coding unit 1510b. ) May be divided into an odd number of third coding units 1520c, 1520d, and 1520e.
- the video decoding apparatus 100 determines whether the third coding units 1520a, 1520b, 1520c, 1520d, and 1520e may be processed in a predetermined order to determine whether there are oddly divided coding units. You can decide. Referring to FIG. 15, the video decoding apparatus 100 may recursively divide a first coding unit 1500 to determine third coding units 1520a, 1520b, 1520c, 1520d, and 1520e.
- the video decoding apparatus 100 may include a first coding unit 1500, a second coding unit 1510a and 1510b, or a third coding unit 1520a, 1520b, 1520c, based on at least one of block shape information and split shape information.
- the order in which the plurality of coding units included in the first coding unit 1500 are processed may be a predetermined order (for example, a z-scan order 1530), and the video decoding apparatus ( 100 may determine whether the third coding unit 1520c, 1520d, and 1520e determined by splitting the right second coding unit 1510b into an odd number satisfies a condition in which the right coding unit 1510b is processed in the predetermined order.
- the video decoding apparatus 100 may satisfy a condition that the third coding units 1520a, 1520b, 1520c, 1520d, and 1520e included in the first coding unit 1500 may be processed in a predetermined order. And whether the at least one of the width and the height of the second coding unit 1510a, 1510b is divided in half according to the boundary of the third coding unit 1520a, 1520b, 1520c, 1520d, or 1520e.
- the third coding units 1520a and 1520b which are determined by dividing the height of the left second coding unit 1510a by the non-square form in half, satisfy the condition, but the right second coding unit 1510b is 3.
- the third coding units 1520c, 1520d, and 1520e determined by dividing into two coding units does not divide the width or height of the right second coding unit 1510b in half
- the third coding units 1520c, 1520d, 1520e may be determined not to satisfy the condition, and the video decoding apparatus 100 determines that the scan order is disconnected in the case of dissatisfaction with the condition, and the right second coding unit 1510b is determined based on the determination result. It may be determined to be divided into an odd number of coding units.
- the video decoding apparatus 100 when the video decoding apparatus 100 is divided into an odd number of coding units, the video decoding apparatus 100 may set a predetermined restriction on a coding unit of a predetermined position among the divided coding units. Since the above has been described through the embodiments, a detailed description thereof will be omitted.
- FIG. 16 illustrates a process of determining, by the video decoding apparatus 100, at least one coding unit by dividing the first coding unit 1600 according to an embodiment.
- the video decoding apparatus 100 may divide the first coding unit 1600 based on at least one of the block shape information and the split shape information acquired through the acquirer 110.
- the first coding unit 1600 having a square shape may be divided into coding units having four square shapes, or may be divided into a plurality of coding units having a non-square shape.
- the video decoding apparatus 100 may determine the first coding unit.
- the video decoding apparatus 100 may form a square first coding unit 1600.
- the video decoding apparatus 100 may process the second coding units 1610a, 1610b, 1610c, 1620a, 1620b, and 1620c included in the first coding unit 1600 in a predetermined order.
- the condition is whether the at least one of the width and height of the first coding unit 1600 is divided in half according to the boundary of the second coding unit (1610a, 1610b, 1610c, 1620a, 1620b, 1620c). It is related to whether or not.
- a boundary between second coding units 1610a, 1610b, and 1610c which is determined by dividing a square first coding unit 1600 in a vertical direction, divides the width of the first coding unit 1600 in half.
- the first coding unit 1600 may be determined to not satisfy a condition that may be processed in a predetermined order.
- the boundary of the second coding units 1620a, 1620b, and 1620c which is determined by dividing the first coding unit 1600 having a square shape in the horizontal direction, does not divide the width of the first coding unit 1600 in half,
- the one coding unit 1600 may be determined as not satisfying a condition that may be processed in a predetermined order. In case of such a condition dissatisfaction, the video decoding apparatus 100 may determine that the scan order is disconnected, and determine that the first coding unit 1600 is divided into odd coding units based on the determination result.
- the video decoding apparatus 100 when the video decoding apparatus 100 is divided into an odd number of coding units, the video decoding apparatus 100 may set a predetermined restriction on a coding unit of a predetermined position among the divided coding units. Since the above has been described through the embodiments, a detailed description thereof will be omitted.
- the video decoding apparatus 100 may determine coding units of various types by dividing the first coding unit.
- the video decoding apparatus 100 may split a first coding unit 1600 having a square shape and a first coding unit 1630 or 1650 having a non-square shape into various coding units. .
- FIG. 17 illustrates that the second coding unit is split when the video coding apparatus 100 according to an embodiment satisfies a predetermined condition when a second coding unit having a non-square shape determined by splitting the first coding unit 1700 is satisfied. It shows that the form that can be limited.
- the video decoding apparatus 100 may determine that the first coding unit 1700 having a square shape has a non-square shape based on at least one of the block shape information and the partition shape information obtained through the acquirer 105. It may be determined by dividing into second coding units 1710a, 1710b, 1720a, and 1720b. The second coding units 1710a, 1710b, 1720a, and 1720b may be split independently. Accordingly, the video decoding apparatus 100 determines whether to split or not split into a plurality of coding units based on at least one of block shape information and split shape information associated with each of the second coding units 1710a, 1710b, 1720a, and 1720b. Can be.
- the video decoding apparatus 100 divides the left second coding unit 1710a of the non-square shape, determined by dividing the first coding unit 1700 in the vertical direction, into a horizontal direction, and then uses the third coding unit ( 1712a, 1712b) can be determined.
- the video decoding apparatus 100 divides the left second coding unit 1710a in the horizontal direction
- the right second coding unit 1710b may have the same horizontal direction as the direction in which the left second coding unit 1710a is divided. It can be limited to not be divided into.
- the right second coding unit 1710b is divided in the same direction and the third coding units 1714a and 1714b are determined, the left second coding unit 1710a and the right second coding unit 1710b are respectively horizontally aligned.
- the third coding units 1712a, 1712b, 1714a, and 1714b may be determined by being split independently. However, this means that the video decoding apparatus 100 divides the first coding unit 1700 into four square second coding units 1730a, 1730b, 1730c, and 1730d based on at least one of the block shape information and the split shape information. This is the same result as the above, which may be inefficient in terms of image decoding.
- the video decoding apparatus 100 splits a second coding unit 1720a or 1720b of a non-square shape determined by dividing the first coding unit 11300 in a horizontal direction into a third coding unit. (1722a, 1722b, 1724a, 1724b) can be determined.
- a third coding unit (1722a, 1722b, 1724a, 1724b)
- the video decoding apparatus 100 divides one of the second coding units (for example, the upper second coding unit 1720a) in the vertical direction
- another video coding unit for example, the lower end
- the coding unit 1720b may restrict the upper second coding unit 1720a from being split in the vertical direction in the same direction as the split direction.
- FIG. 18 illustrates a process of splitting a coding unit having a square shape by the video decoding apparatus 100 when the split shape information cannot be divided into four square coding units.
- the video decoding apparatus 100 divides the first coding unit 1800 based on at least one of the block shape information and the split shape information to divide the second coding units 1810a, 1810b, 1820a, 1820b, and the like. You can decide.
- the split type information may include information about various types in which a coding unit may be split, but the information on various types may not include information for splitting into four coding units having a square shape.
- the video decoding apparatus 100 may not split the first coding unit 1800 having a square shape into four second coding units 1830a, 1830b, 1830c, and 1830d having four square shapes.
- the video decoding apparatus 100 may determine the second coding unit 1810a, 1810b, 1820a, 1820b, or the like having a non-square shape, based on the split shape information.
- the video decoding apparatus 100 may independently split second non-square second coding units 1810a, 1810b, 1820a, 1820b, and the like.
- Each of the second coding units 1810a, 1810b, 1820a, 1820b, etc. may be divided in a predetermined order through a recursive method, which is based on at least one of the block shape information and the split shape information 1800. ) May be a division method corresponding to the division method.
- the video decoding apparatus 100 may determine the third coding units 1812a and 1812b having a square shape by dividing the left second coding unit 1810a in the horizontal direction, and the right second coding unit 1810b The third coding units 1814a and 1814b having a square shape may be determined by being split in the horizontal direction. Furthermore, the video decoding apparatus 100 may divide the left second coding unit 1810a and the right second coding unit 1810b in the horizontal direction to determine the third coding units 1816a, 1816b, 1816c, and 1816d having a square shape. have. In this case, the coding unit may be determined in the same form as that in which the first coding unit 1800 is divided into four second coding units 1830a, 1830b, 1830c, and 1830d.
- the video decoding apparatus 100 may determine the third coding units 1822a and 1822b having a square shape by dividing the upper second coding unit 1820a in the vertical direction, and the lower second coding unit 1820b. ) May be divided in a vertical direction to determine third coding units 1824a and 1824b having a square shape. Furthermore, the video decoding apparatus 100 may divide the upper second coding unit 1820a and the lower second coding unit 1820b in the vertical direction to determine the third coding units 1822a, 1822b, 1824a, and 1824b having a square shape. have. In this case, the coding unit may be determined in the same form as that in which the first coding unit 1800 is divided into four second coding units 1830a, 1830b, 1830c, and 1830d.
- FIG. 19 illustrates that a processing order between a plurality of coding units may vary according to a splitting process of coding units, according to an embodiment.
- the video decoding apparatus 100 may divide the first coding unit 1900 based on the block shape information and the split shape information.
- the block shape information indicates a square shape and the split shape information indicates that the first coding unit 1900 is split in at least one of a horizontal direction and a vertical direction
- the video decoding apparatus 100 may determine the first coding unit 1900.
- a second coding unit eg, 1910a, 1910b, 1920a, 1920b, 1930a, 1930b, 1930c, 1930d, etc.
- non-square-type second coding units 1910a, 1910b, 1920a, and 1920b which are determined by dividing the first coding unit 1900 only in the horizontal direction or the vertical direction, respectively, may include block shape information and split shape information for each. It can be divided independently based on.
- the video decoding apparatus 100 divides the second coding units 1910a and 1910b generated by splitting the first coding unit 1900 in the vertical direction in the horizontal direction, respectively, to generate the third coding unit 1916a, 1916b, 1916c and 1916d, and the second coding units 1920a and 1920b generated by dividing the first coding unit 1900 in the horizontal direction are divided in the horizontal direction, respectively, and the third coding units 1926a, 1926b and 1926c. 1926d). Since the splitting process of the second coding units 1910a, 1910b, 1920a, and 1920b has been described above with reference to FIG. 17, a detailed description thereof will be omitted.
- the video decoding apparatus 100 may process coding units in a predetermined order. Features of the processing of coding units according to a predetermined order have been described above with reference to FIG. 14, and thus detailed descriptions thereof will be omitted. Referring to FIG. 19, the video decoding apparatus 100 splits a first coding unit 1900 having a square shape to form three square third coding units 1916a, 1916b, 1916c, 1916d, 1926a, 1926b, 1926c, and 1926d. ) Can be determined.
- the video decoding apparatus 100 processes the processing sequence of the third coding units 1916a, 1916b, 1916c, 1916d, 1926a, 1926b, 1926c, and 1926d according to a form in which the first coding unit 1900 is divided. You can decide.
- the video decoding apparatus 100 determines the third coding units 1916a, 1916b, 1916c, and 1916d by dividing the second coding units 1910a and 1910b generated by dividing in the vertical direction, respectively, in the horizontal direction.
- the video decoding apparatus 100 may first process the third coding units 1916a and 1916b included in the left second coding unit 1910a in the vertical direction, and then include the right second coding unit 1910b.
- the third coding units 1916a, 1916b, 1916c, and 1916d may be processed according to an order 1917 of processing the third coding units 1916c and 1916d in the vertical direction.
- the video decoding apparatus 100 determines the third coding units 1926a, 1926b, 1926c, and 1926d by dividing the second coding units 1920a and 1920b generated by splitting in the horizontal direction in the vertical direction.
- the video decoding apparatus 100 may first process the third coding units 1926a and 1926b included in the upper second coding unit 1920a in the horizontal direction, and then include the lower coding unit 1920b.
- the third coding units 1926a, 1926b, 1926c, and 1926d may be processed according to an order 1927 of processing the third coding units 1926c and 1926d in the horizontal direction.
- second coding units 1910a, 1910b, 1920a, and 1920b may be divided, respectively, and square third coding units 1916a, 1916b, 1916c, 1916d, 1926a, 1926b, 1926c, and 1926d may be determined. have.
- the second coding units 1910a and 1910b determined by dividing in the vertical direction and the second coding units 1920a and 1920b determined by dividing in the horizontal direction are divided into different forms, but are determined after the third coding unit 1916a.
- the first coding unit 1900 is divided into coding units having the same type.
- the video decoding apparatus 100 recursively splits the coding unit through a different process based on at least one of the block shape information and the split shape information, and as a result, the video decoding apparatus 100 determines a plurality of coding units having the same shape. Coding units may be processed in different orders.
- 20 is a diagram illustrating a process of determining a depth of a coding unit as a shape and a size of a coding unit change when a coding unit is recursively divided and a plurality of coding units are determined according to an embodiment.
- the video decoding apparatus 100 may determine a depth of a coding unit according to a predetermined criterion.
- the predetermined criterion may be the length of the long side of the coding unit.
- the depth of the current coding unit is greater than the depth of the coding unit before the split. It can be determined that the depth is increased by n.
- a coding unit having an increased depth is expressed as a coding unit of a lower depth.
- the video decoding apparatus 100 may have a square shape, based on block shape information indicating a square shape (for example, block shape information may indicate '0: SQUARE').
- the first coding unit 2000 may be divided to determine a second coding unit 2002, a third coding unit 2004, and the like of a lower depth. If the size of the square first coding unit 2000 is 2Nx2N, the second coding unit 2002 determined by dividing the width and height of the first coding unit 2000 by 1/21 times may have a size of NxN. have. Furthermore, the third coding unit 2004 determined by dividing the width and the height of the second coding unit 2002 into half sizes may have a size of N / 2 ⁇ N / 2.
- the width and height of the third coding unit 2004 correspond to 1/22 times the first coding unit 2000.
- the depth of the first coding unit 2000 is D
- the depth of the second coding unit 2002 that is 1/21 times the width and the height of the first coding unit 2000 may be D + 1
- the depth of the third coding unit 2004 that is 1/22 times the width and the height of 2000 may be D + 2.
- block shape information indicating a non-square shape (e.g., block shape information indicates that the height is a non-square longer than the width '1: NS_VER' or the width is a non-square longer than the height).
- 2 may indicate NS_HOR ', and the video decoding apparatus 100 may split the first coding unit 2010 or 2020 having a non-square shape to form the second coding unit 2012 or 2022 of the lower depth.
- the third coding unit 2014 or 2024 may be determined.
- the video decoding apparatus 100 may determine a second coding unit (for example, 2002, 2012, 2022, etc.) by dividing at least one of a width and a height of the Nx2N-sized first coding unit 2010. That is, the video decoding apparatus 100 may divide the first coding unit 2010 in the horizontal direction to determine the second coding unit 2002 having the NxN size or the second coding unit 2022 having the NxN / 2 size.
- the second coding unit 2012 having a size of N / 2 ⁇ N may be determined by splitting in the horizontal direction and the vertical direction.
- the video decoding apparatus 100 determines at least one of a width and a height of a 2N ⁇ N first coding unit 2020 to determine a second coding unit (eg, 2002, 2012, 2022, etc.). It may be. That is, the video decoding apparatus 100 may divide the first coding unit 2020 in the vertical direction to determine a second coding unit 2002 having an NxN size or a second coding unit 2012 having an N / 2xN size.
- the second coding unit 2022 having the size of NxN / 2 may be determined by splitting in the horizontal direction and the vertical direction.
- the video decoding apparatus 100 determines at least one of a width and a height of the NxN-sized second coding unit 2002 to determine a third coding unit (eg, 2004, 2014, 2024, etc.). It may be. That is, the video decoding apparatus 100 determines the third coding unit 2004 having the size of N / 2xN / 2 by dividing the second coding unit 2002 in the vertical direction and the horizontal direction, or makes the N / 22xN / 2 sized product. The third coding unit 2014 may be determined or the third coding unit 2024 having a size of N / 2 ⁇ N / 22 may be determined.
- a third coding unit eg, 2004, 2014, 2024, etc.
- the video decoding apparatus 100 splits at least one of a width and a height of the N / 2xN sized second coding unit 2012 to a third coding unit (eg, 2004, 2014, 2024, etc.). May be determined. That is, the video decoding apparatus 100 divides the second coding unit 2012 in the horizontal direction to form a third coding unit 2004 having a size of N / 2 ⁇ N / 2 or a third coding unit 2024 having a size of N / 2xN / 22. ) May be determined or divided into vertical and horizontal directions to determine a third coding unit 2014 having a size of N / 22 ⁇ N / 2.
- the video decoding apparatus 100 splits at least one of a width and a height of the NxN / 2 sized second coding unit 2014 to form a third coding unit (eg, 2004, 2014, 2024, etc.). May be determined. That is, the video decoding apparatus 100 divides the second coding unit 2012 in the vertical direction to form a third coding unit 2004 having a size of N / 2xN / 2 or a third coding unit having a size of N / 22xN / 2 (2014). ) May be determined or divided in the vertical direction and the horizontal direction to determine the third coding unit 2024 of size N / 2 ⁇ N / 22.
- a third coding unit eg, 2004, 2014, 2024, etc.
- the video decoding apparatus 100 may divide a square coding unit (for example, 2000, 2002, 2004) in a horizontal direction or a vertical direction.
- the first coding unit 2000 having a size of 2Nx2N is divided in the vertical direction to determine the first coding unit 2010 having the size of Nx2N, or the first coding unit 2020 having a size of 2NxN is determined by splitting in the horizontal direction.
- the depth of the coding unit determined by splitting the first coding unit 2000, 2002 or 2004 having a size of 2N ⁇ 2N into the horizontal or vertical direction is determined. May be the same as the depth of the first coding unit 2000, 2002, or 2004.
- the width and height of the third coding unit 2014 or 2024 may correspond to 1/22 times the first coding unit 2010 or 2020.
- the depth of the first coding unit 2010 or 2020 is D
- the depth of the second coding unit 2012 or 2014 that is 1/2 the width and height of the first coding unit 2010 or 2020 may be D + 1.
- the depth of the third coding unit 2014 or 2024 that is 1/22 times the width and the height of the first coding unit 2010 or 2020 may be D + 2.
- FIG. 21 illustrates a depth index and a part index (PID) for classifying coding units, which may be determined according to shapes and sizes of coding units, according to an embodiment.
- PID part index
- the video decoding apparatus 100 may determine a second coding unit having various types by dividing the first coding unit 2100 having a square shape. Referring to FIG. 21, the video decoding apparatus 100 divides the first coding unit 2100 in at least one of a vertical direction and a horizontal direction according to the split type information to thereby obtain the second coding units 2102a, 2102b, 2104a, 2104b, 2106a, 2106b, 2106c, 2106d). That is, the video decoding apparatus 100 may determine the second coding units 2102a, 2102b, 2104a, 2104b, 2106a, 2106b, 2106c, and 2106d based on the split shape information of the first coding unit 2100.
- the second coding units 2102a, 2102b, 2104a, 2104b, 2106a, 2106b, 2106c, and 2106d which are determined according to split shape information about the first coding unit 2100 having a square shape, have a long side length. Depth can be determined based on this. For example, since the length of one side of the first coding unit 2100 having a square shape and the length of the long side of the second coding units 2102a, 2102b, 2104a, and 2104b having a non-square shape are the same, the first coding unit ( 2100 and the depths of the non-square second coding units 2102a, 2102b, 2104a, and 2104b may be regarded as D.
- the video decoding apparatus 100 divides the first coding unit 2100 into four square coding units 2106a, 2106b, 2106c, and 2106d based on the split form information
- the video decoding apparatus 100 divides the first coding unit into a square form. Since the length of one side of the two coding units 2106a, 2106b, 2106c, and 2106d is 1/2 times the length of one side of the first coding unit 2100, the depths of the second coding units 2106a, 2106b, 2106c, and 2106d are determined. May be a depth of D + 1 that is one depth lower than D, which is a depth of the first coding unit 2100.
- the video decoding apparatus 100 divides a first coding unit 2110 having a height greater than a width in a horizontal direction according to split shape information, thereby performing a plurality of second coding units 2112a, 2112b, 2114a, 2114b and 2114c).
- the video decoding apparatus 100 divides a first coding unit 2120 having a width greater than a height in a vertical direction according to split shape information, thereby performing a plurality of second coding units 2122a, 2122b, 2124a, 2124b, 2124c).
- the second coding units 2112a, 2112b, 2114a, 2114b, 2116a, 2116b, 2116c, and 2116d that are determined according to split shape information about the first coding unit 2110 or 2120 having a non-square shape may be used. Depth may be determined based on the length of the long side. For example, since the length of one side of the second coding units 2112a and 2112b having a square shape is 1/2 times the length of one side of the first coding unit 2110 having a non-square shape having a height greater than the width, the square is square.
- the depths of the second coding units 2102a, 2102b, 2104a, and 2104b of the form are D + 1, which is one depth lower than the depth D of the first coding unit 2110 of the non-square form.
- the video decoding apparatus 100 may divide the non-square first coding unit 2110 into odd second coding units 2114a, 2114b, and 2114c based on the split shape information.
- the odd numbered second coding units 2114a, 2114b, and 2114c may include non-square second coding units 2114a and 2114c and square shape second coding units 2114b.
- the length of the long side of the second coding units 2114a and 2114c of the non-square shape and the length of one side of the second coding unit 2114b of the square shape is 1 / time of the length of one side of the first coding unit 2110.
- the depths of the second coding units 2114a, 2114b, and 2114c may be a depth of D + 1 that is one depth lower than the depth D of the first coding unit 2110.
- the video decoding apparatus 100 corresponds to the above-described method of determining depths of coding units related to the first coding unit 2110, and is related to the first coding unit 2120 having a non-square shape having a width greater than the height. Depth of coding units may be determined.
- the video decoding apparatus 100 may determine the size ratio between the coding units.
- the index can be determined based on this.
- a coding unit 2114b positioned at the center of odd-numbered split coding units 2114a, 2114b, and 2114c may have the same width as the other coding units 2114a and 2114c but have different heights. It may be twice the height of the fields 2114a and 2114c. That is, in this case, the coding unit 2114b positioned in the center may include two of the other coding units 2114a and 2114c.
- the video decoding apparatus 100 may determine whether odd-numbered split coding units are not the same size based on whether there is a discontinuity of an index for distinguishing the split coding units.
- the video decoding apparatus 100 may determine whether the video decoding apparatus 100 is divided into a specific division type based on a value of an index for dividing the plurality of coding units determined by dividing from the current coding unit. Referring to FIG. 21, the video decoding apparatus 100 determines an even number of coding units 2112a and 2112b by dividing a first coding unit 2110 having a height greater than a width, or an odd number of coding units 2114a and 2114b. , 2114c). The video decoding apparatus 100 may use an index (PID) indicating each coding unit to distinguish each of the plurality of coding units. According to an embodiment, the PID may be obtained from a sample (eg, an upper left sample) at a predetermined position of each coding unit.
- a sample eg, an upper left sample
- the video decoding apparatus 100 may determine a coding unit of a predetermined position among coding units determined by splitting by using an index for dividing coding units. According to an embodiment of the present disclosure, when the split type information of the first coding unit 2110 having a height greater than the width is divided into three coding units, the video decoding apparatus 100 may decode the first coding unit 2110. It may be divided into three coding units 2114a, 2114b, and 2114c. The video decoding apparatus 100 may allocate an index for each of three coding units 2114a, 2114b, and 2114c. The video decoding apparatus 100 may compare the indices of the respective coding units to determine the coding unit among the oddly divided coding units.
- the video decoding apparatus 100 encodes a coding unit 2114b having an index corresponding to a center value among the indices based on the indexes of the coding units, and encodes the center position among the coding units determined by splitting the first coding unit 2110. It can be determined as a unit. According to an embodiment, when the video decoding apparatus 100 determines an index for dividing the divided coding units, when the coding units are not the same size, the video decoding apparatus 100 may determine the index based on the size ratio between the coding units. . Referring to FIG.
- a coding unit 2114b generated by dividing a first coding unit 2110 may include coding units 2114a and 2114c having the same width but different heights as other coding units 2114a and 2114c. It can be twice the height.
- the index (PID) of the coding unit 2114b positioned in the center is 1, the coding unit 2114c positioned in the next order may be 3 having an index increased by 2.
- the video decoding apparatus 100 may determine that the video decoding apparatus 100 is divided into a plurality of coding units including a coding unit having a different size from other coding units.
- the video decoding apparatus 100 may have a shape that is different in size from coding units having different coding units (for example, middle coding units) at a predetermined position among the odd coding units.
- the current coding unit can be divided by.
- the video decoding apparatus 100 may determine a coding unit having a different size by using an index (PID) for the coding unit.
- PID index
- the above-described index, the size or position of the coding unit of the predetermined position to be determined are specific to explain an embodiment and should not be construed as being limited thereto. Various indexes and positions and sizes of the coding unit may be used. Should be interpreted.
- the video decoding apparatus 100 may use a predetermined data unit at which recursive division of coding units begins.
- FIG. 22 illustrates that a plurality of coding units are determined according to a plurality of predetermined data units included in a picture according to an embodiment.
- the predetermined data unit may be defined as a data unit in which a coding unit starts to be recursively divided using at least one of block shape information and split shape information. That is, it may correspond to the coding unit of the highest depth used in the process of determining a plurality of coding units for dividing the current picture.
- a predetermined data unit will be referred to as a reference data unit.
- the reference data unit may represent a predetermined size and shape.
- the reference coding unit may include samples of M ⁇ N. M and N may be the same as each other, and may be an integer represented by a multiplier of two. That is, the reference data unit may represent a square or non-square shape, and then may be divided into integer coding units.
- the video decoding apparatus 100 may divide the current picture into a plurality of reference data units. According to an embodiment, the video decoding apparatus 100 may divide a plurality of reference data units for dividing a current picture using split information for each reference data unit. The division process of the reference data unit may correspond to the division process using a quad-tree structure.
- the video decoding apparatus 100 may predetermine the minimum size of the reference data unit included in the current picture. Accordingly, the video decoding apparatus 100 may determine a reference data unit having various sizes having a minimum size or more, and determine at least one coding unit by using block shape information and split shape information based on the determined reference data unit. You can decide.
- the video decoding apparatus 100 may use a reference coding unit 2200 having a square shape, or may use a reference coding unit 2202 of a non-square shape.
- the shape and size of the reference coding unit may include various data units (eg, a sequence, a picture, a slice, and a slice segment) that may include at least one reference coding unit. slice segment, maximum coding unit, etc.).
- the acquirer 105 of the video decoding apparatus 100 may obtain at least one of information about a shape of a reference coding unit and information about a size of a reference coding unit from the bitstream for each of the various data units. have.
- the process of determining at least one coding unit included in the reference coding unit 2200 having a square shape is described above by splitting the current coding unit 300 of FIG. 10.
- the reference coding unit 2202 having a non-square shape has been described. Since the process of determining at least one coding unit included in the above is described above through the process of splitting the current coding unit 1100 or 1150 of FIG. 11, a detailed description thereof will be omitted.
- the video decoding apparatus 100 may determine the size and shape of the reference coding unit in order to determine the size and shape of the reference coding unit according to some data unit predetermined based on a predetermined condition.
- the acquirer 105 may determine, from the bitstream, a data unit having a predetermined size (for example, a slice or less) among a variety of data units (for example, a sequence, a picture, a slice, a slice segment, a maximum coding unit, etc.). ), The index for identifying the size and shape of the reference coding unit may be obtained for each slice, slice segment, maximum coding unit, etc. as a data unit that satisfies.
- the video decoding apparatus 100 may determine the size and shape of the reference data unit for each data unit satisfying the predetermined condition by using the index.
- the index may be obtained and used. In this case, at least one of the size and shape of the reference coding unit corresponding to the index indicating the size and shape of the reference coding unit may be predetermined.
- the video decoding apparatus 100 selects at least one of the predetermined size and shape of the reference coding unit according to the index, thereby selecting at least one of the size and shape of the reference coding unit included in the data unit that is the reference for obtaining the index. You can decide.
- the video decoding apparatus 100 may use at least one reference coding unit included in one maximum coding unit. That is, at least one reference coding unit may be included in the maximum coding unit for dividing an image, and the coding unit may be determined through a recursive division process of each reference coding unit. According to an embodiment, at least one of the width and the height of the maximum coding unit may correspond to an integer multiple of at least one of the width and the height of the reference coding unit. According to an embodiment, the size of the reference coding unit may be a size obtained by dividing the maximum coding unit n times according to a quad tree structure.
- the video decoding apparatus 100 may determine the reference coding unit by dividing the maximum coding unit n times according to the quad tree structure, and according to various embodiments, the video coding apparatus 100 may determine at least one of the block shape information and the split shape information. Can be divided based on.
- FIG. 23 is a diagram of a processing block serving as a reference for determining a determination order of a reference coding unit included in a picture 2300, according to an exemplary embodiment.
- the video decoding apparatus 100 may determine at least one processing block for dividing a picture.
- the processing block is a data unit including at least one reference coding unit for dividing an image, and the at least one reference coding unit included in the processing block may be determined in a specific order. That is, the determination order of at least one reference coding unit determined in each processing block may correspond to one of various types of order in which the reference coding unit may be determined, and the reference coding unit determination order determined in each processing block. May be different per processing block.
- the order of determination of the reference coding units determined for each processing block is raster scan, Z-scan, N-scan, up-right diagonal scan, and horizontal scan. It may be one of various orders such as a horizontal scan, a vertical scan, etc., but the order that may be determined should not be construed as being limited to the scan orders.
- the video decoding apparatus 100 may obtain information about the size of the processing block and determine the size of at least one processing block included in the image.
- the video decoding apparatus 100 may determine the size of at least one processing block included in the image by obtaining information about the size of the processing block from the bitstream.
- the size of such a processing block may be a predetermined size of a data unit indicated by the information about the size of the processing block.
- the acquirer 105 of the video decoding apparatus 100 may obtain information about a size of a processing block from a bitstream for each specific data unit.
- the information about the size of the processing block may be obtained from the bitstream in data units such as an image, a sequence, a picture, a slice, and a slice segment. That is, the acquirer 105 may obtain information about the size of the processing block from the bitstream for each of the various data units, and the video decoding apparatus 100 may divide the picture by using the information about the size of the acquired processing block.
- the size of at least one processing block may be determined, and the size of the processing block may be an integer multiple of the reference coding unit.
- the video decoding apparatus 100 may determine the sizes of the processing blocks 2302 and 2312 included in the picture 2300. For example, the video decoding apparatus 100 may determine the size of the processing block based on the information about the size of the processing block obtained from the bitstream. Referring to FIG. 23, the video decoding apparatus 100 may increase the horizontal sizes of the processing blocks 2302 and 2312 to four times the horizontal size of the reference coding unit and four times the vertical size of the reference coding unit, according to an exemplary embodiment. You can decide. The video decoding apparatus 100 may determine an order in which at least one reference coding unit is determined in at least one processing block.
- the video decoding apparatus 100 may determine each processing block 2302 and 2312 included in the picture 2300 based on the size of the processing block, and include the processing block 2302 and 2312 in the processing block 2302 and 2312.
- a determination order of at least one reference coding unit may be determined.
- the determination of the reference coding unit may include the determination of the size of the reference coding unit.
- the video decoding apparatus 100 may obtain information about a determination order of at least one reference coding unit included in at least one processing block from a bitstream, and based on the obtained determination order The order in which at least one reference coding unit is determined may be determined.
- the information about the determination order may be defined in an order or direction in which reference coding units are determined in the processing block. That is, the order in which the reference coding units are determined may be independently determined for each processing block.
- the video decoding apparatus 100 may obtain information on a determination order of a reference coding unit from a bitstream for each specific data unit.
- the acquirer 105 may obtain information on the determination order of the reference coding unit from the bitstream for each data unit such as an image, a sequence, a picture, a slice, a slice segment, and a processing block. Since the information about the determination order of the reference coding unit indicates the determination order of the reference coding unit in the processing block, the information about the determination order may be obtained for each specific data unit including an integer number of processing blocks.
- the video decoding apparatus 100 may determine at least one reference coding unit based on the determined order according to an embodiment.
- the acquirer 105 may obtain information on a reference coding unit determination order from the bitstream as information related to the processing blocks 2302 and 2312, and the video decoding apparatus 100 may process the processing block.
- An order of determining at least one reference coding unit included in 2230 and 2312 may be determined, and at least one reference coding unit included in the picture 2300 may be determined according to the determination order of the coding unit.
- the video decoding apparatus 100 may determine determination orders 2304 and 2314 of at least one reference coding unit associated with each processing block 2302 and 2312. For example, when information about the determination order of the reference coding unit is obtained for each processing block, the reference coding unit determination order associated with each processing block 2302 and 2312 may be different for each processing block.
- the reference coding unit included in the processing block 2302 may be determined according to the raster scan order.
- the reference coding unit determination order 2314 associated with the other processing block 2312 is the reverse order of the raster scan order
- the reference coding units included in the processing block 2312 may be determined according to the reverse order of the raster scan order.
- the video decoding apparatus 100 may decode at least one determined reference coding unit according to an embodiment.
- the video decoding apparatus 100 may decode an image based on the reference coding unit determined through the above-described embodiment.
- the method of decoding the reference coding unit may include various methods of decoding an image.
- the video decoding apparatus 100 may obtain and use block shape information indicating a shape of a current coding unit or split shape information indicating a method of dividing a current coding unit from a bitstream.
- Block type information or split type information may be included in a bitstream associated with various data units.
- the video decoding apparatus 100 may include a sequence parameter set, a picture parameter set, a video parameter set, a slice header, and a slice segment header. block type information or segmentation type information included in a segment header) may be used.
- the video decoding apparatus 100 may obtain and use syntax corresponding to block type information or split type information from the bitstream from the bitstream for each maximum coding unit, reference coding unit, and processing block.
- the above-described embodiments of the present disclosure may be written as a program executable on a computer, and may be implemented in a general-purpose digital computer operating the program using a computer-readable recording medium.
- the computer-readable recording medium may include a storage medium such as a magnetic storage medium (eg, a ROM, a floppy disk, a hard disk, etc.) and an optical reading medium (eg, a CD-ROM, a DVD, etc.).
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Abstract
Description
Claims (15)
- 비디오 복호화 방법에 있어서,부호화된 비디오의 비트스트림을 수신하는 단계;픽쳐로부터 분할된 복수의 최대 부호화 단위들 중 소정 개수의 서로 인접한 최대 부호화 단위들로 구성된 하나 이상의 스캐닝 단위의 형태 정보를 상기 비트스트림으로부터 획득하는 단계;상기 획득된 형태 정보에 따라 상기 하나 이상의 스캐닝 단위의 형태를 결정하는 단계;현재 픽쳐에 대한 상기 하나 이상의 스캐닝 단위의 처리 순서 정보 및 상기 하나 이상의 스캐닝 단위에 포함된 최대 부호화 단위들의 처리 순서 정보를 상기 비트스트림으로부터 획득하는 단계;상기 하나 이상의 스캐닝 단위의 처리 순서 정보에 기초하여 상기 현재 픽쳐에 포함된 상기 하나 이상의 스캐닝 단위의 처리 순서를 결정하는 단계;상기 하나 이상의 스캐닝 단위에 포함된 최대 부호화 단위들의 처리 순서 정보에 기초하여 각각의 스캐닝 단위에 포함된 최대 부호화 단위들의 처리 순서를 결정하는 단계; 및상기 하나 이상의 스캐닝 단위의 상기 결정된 처리 순서 및 상기 각각의 스캐닝 단위에 포함된 최대 부호화 단위들의 상기 결정된 처리 순서에 따라 상기 현재 픽쳐에 포함된 상기 복수의 최대 부호화 단위들을 복호화하는 단계를 포함하는 것을 특징으로 하는 비디오 복호화 방법.
- 제1항에 있어서,상기 최대 부호화 단위는 심도를 갖는 하나 이상의 부호화 단위들로 계층적으로 분할되고, 현재 심도의 부호화 단위는 이웃 부호화 단위들과 독립적으로 하위 심도의 부호화 단위들로 분할되며, 상기 최대 부호화 단위의 상기 현재 심도의 부호화 단위들은, 상기 최대 부호화 단위 별로 결정된 상기 부호화 단위의 처리 순서에 따라 복호화되는 것을 특징으로 하는 비디오 복호화 방법.
- 제1항에 있어서,상기 하나 이상의 스캐닝 단위의 형태를 결정하는 단계는,상기 픽쳐 전체를 하나의 스캐닝 단위로 결정하는 단계를 포함하는 것을 특징으로 하는 비디오 복호화 방법.
- 제1항에 있어서,상기 하나 이상의 스캐닝 단위의 형태를 결정하는 단계는,상기 픽쳐에서 최대 부호화 단위들의 각 행을 하나의 스캐닝 단위로 결정하는 단계를 포함하는 것을 특징으로 하는 비디오 복호화 방법.
- 제4항에 있어서,상기 현재 픽쳐에 포함된 상기 하나 이상의 스캐닝 단위의 처리 순서를 결정하는 단계는,최상측 스캐닝 단위로부터 아래 방향으로 처리하는 순서 또는 최하측 스캐닝 단위로부터 위 방향으로 처리하는 순서 중 어느 하나를 상기 하나 이상의 스캐닝 단위의 처리 순서로 결정하는 단계를 포함하고,상기 각각의 스캐닝 단위에 포함된 최대 부호화 단위들의 처리 순서를 결정하는 단계는,최대 부호화 단위들의 행에서 제일 왼쪽의 최대 부호화 단위로부터 오른쪽으로 처리하는 순서 또는 최대 부호화 단위들의 행에서 제일 오른쪽의 최대 부호화 단위로부터 왼쪽으로 처리하는 순서 중 어느 하나를 상기 각각의 스캐닝 단위에 포함된 최대 부호화 단위들의 처리 순서로 결정하는 단계를 포함하는 것을 특징으로 하는 비디오 복호화 방법.
- 제1항에 있어서,상기 하나 이상의 스캐닝 단위의 형태를 결정하는 단계는,NxM의 최대 부호화 단위들을 하나의 스캐닝 단위로 결정하는 단계를 포함하는 것을 특징으로 하는 비디오 복호화 방법.
- 제6항에 있어서,상기 현재 픽쳐에 포함된 상기 하나 이상의 스캐닝 단위의 처리 순서를 결정하는 단계는,래스터 스캔 순서, 상기 래스터 스캔 순서의 역순, 상기 래스터 스캔 순서와 수평 방향 순서는 동일하고 수직 방향 순서는 반대인 처리 순서, 및 상기 래스터 스캔 순서와 수직 방향 순서는 동일하고 수평 방향 순서는 반대인 처리 순서 중 어느 하나를 상기 하나 이상의 스캐닝 단위의 처리 순서로 결정하는 단계를 포함하고,상기 각각의 스캐닝 단위에 포함된 최대 부호화 단위들의 처리 순서를 결정하는 단계는,상기 래스터 스캔 순서, 상기 래스터 스캔 순서의 역순, 상기 래스터 스캔 순서와 수평 방향 순서는 동일하고 수직 방향 순서는 반대인 처리 순서, 및 상기 래스터 스캔 순서와 수직 방향 순서는 동일하고 수평 방향 순서는 반대인 처리 순서 중 어느 하나를 상기 각각의 스캐닝 단위에 포함된 최대 부호화 단위들의 처리 순서로 결정하는 단계를 포함하는 것을 특징으로 하는 비디오 복호화 방법.
- 제1항에 있어서,상기 현재 픽쳐에 포함된 상기 하나 이상의 스캐닝 단위의 처리 순서를 결정하는 단계는,이전 픽쳐의 샘플 값들로부터 상기 이전 픽쳐에 포함된 에지 정보를 추출하는 단계;추출된 에지 정보의 방향에 기초하여 에지 정보 방향의 대푯값을 결정하는 단계; 및상기 현재 픽쳐에서 이용 가능한 후보 처리 순서들 중 상기 결정된 대푯값에 대응하는 처리 순서를 상기 하나 이상의 스캐닝 단위의 처리 순서로 결정하는 단계를 포함하는 것을 특징으로 하는 비디오 복호화 방법.
- 제1항에 있어서,상기 현재 픽쳐에 포함된 상기 하나 이상의 스캐닝 단위의 처리 순서를 결정하는 단계는,이전 픽쳐를 복호화할 때 사용된 인트라 예측 모드의 통계치를 생성하는 단계;상기 통계치에 기초하여 상기 이전 픽쳐의 인트라 예측 모드의 대푯값을 결정하는 단계; 및상기 현재 픽쳐에서 이용 가능한 후보 처리 순서들 중 상기 결정된 대푯값에 대응하는 처리 순서를 상기 하나 이상의 스캐닝 단위의 처리 순서로 결정하는 단계를 포함하는 것을 특징으로 하는 비디오 복호화 방법.
- 제2항에 있어서,상기 현재 픽쳐에 포함된 상기 하나 이상의 스캐닝 단위의 처리 순서를 결정하는 단계는,이전 픽쳐에 포함된 모든 최대 부호화 단위들에 대한 상기 부호화 단위의 처리 순서의 통계치를 생성하는 단계;상기 통계치에 기초하여 상기 이전 픽쳐의 상기 부호화 단위의 처리 순서의 대푯값을 결정하는 단계; 및상기 현재 픽쳐에서 이용 가능한 후보 처리 순서들 중 상기 결정된 대푯값에 대응하는 처리 순서를 상기 하나 이상의 스캐닝 단위의 처리 순서로 결정하는 단계를 포함하는 것을 특징으로 하는 비디오 복호화 방법.
- 제1항에 있어서,상기 각각의 스캐닝 단위에 포함된 최대 부호화 단위들의 처리 순서를 결정하는 단계는,이전 픽쳐에서 동일한 위치의(co-located) 스캐닝 단위 또는 상기 현재 픽쳐에서 현재 스캐닝 단위에 인접한 주변 스캐닝 단위의 샘플 값들로부터 에지 정보를 추출하는 단계;추출된 에지 정보의 방향에 기초하여 에지 정보 방향의 대푯값을 결정하는 단계; 및상기 현재 스캐닝 단위에서 이용 가능한 후보 처리 순서들 중 상기 결정된 대푯값에 대응하는 처리 순서를 상기 현재 스캐닝 단위에 포함된 상기 최대 부호화 단위들의 처리 순서로 결정하는 단계를 포함하는 것을 특징으로 하는 비디오 복호화 장치.
- 제1항에 있어서,상기 각각의 스캐닝 단위에 포함된 최대 부호화 단위들의 처리 순서를 결정하는 단계는,이전 픽쳐에서 동일한 위치의 스캐닝 단위 또는 상기 현재 픽쳐에서 현재 스캐닝 단위에 인접한 주변 스캐닝 단위를 복호화할 때 사용된 인트라 예측 모드의 통계치를 생성하는 단계;상기 통계치에 기초하여 상기 인트라 예측 모드의 대푯값을 결정하는 단계; 및상기 현재 스캐닝 단위에서 이용 가능한 후보 처리 순서들 중 상기 결정된 대푯값에 대응하는 처리 순서를 상기 현재 스캐닝 단위에 포함된 상기 최대 부호화 단위들의 처리 순서로 결정하는 단계를 포함하는 것을 특징으로 하는 비디오 복호화 장치.
- 제2항에 있어서,상기 각각의 스캐닝 단위에 포함된 최대 부호화 단위들의 처리 순서를 결정하는 단계는,이전 픽쳐에서 동일한 위치의 스캐닝 단위 또는 상기 현재 픽쳐에서 현재 스캐닝 단위에 인접한 주변 스캐닝 단위에 포함된 모든 최대 부호화 단위들에 대한 상기 부호화 단위의 처리 순서의 통계치를 생성하는 단계;상기 통계치에 기초하여 상기 부호화 단위의 처리 순서의 대푯값을 결정하는 단계; 및상기 현재 스캐닝 단위에서 이용 가능한 후보 처리 순서들 중 상기 결정된 대푯값에 대응하는 처리 순서를 상기 현재 스캐닝 단위에 포함된 상기 최대 부호화 단위들의 처리 순서로 결정하는 단계를 포함하는 것을 특징으로 하는 비디오 복호화 장치.
- 비디오 복호화 장치에 있어서,부호화된 비디오의 비트스트림을 수신하는 비트스트림 수신부;픽쳐로부터 분할된 복수의 최대 부호화 단위들 중 소정 개수의 서로 인접한 최대 부호화 단위들로 구성된 하나 이상의 스캐닝 단위의 형태 정보, 현재 픽쳐에 대한 상기 하나 이상의 스캐닝 단위의 처리 순서 정보, 및 상기 하나 이상의 스캐닝 단위에 포함된 최대 부호화 단위들의 처리 순서 정보를 상기 비트스트림으로부터 획득하는 정보 획득부; 및상기 획득된 형태 정보에 따라 상기 하나 이상의 스캐닝 단위의 형태를 결정하고, 상기 하나 이상의 스캐닝 단위의 처리 순서 정보에 기초하여 상기 현재 픽쳐에 포함된 상기 하나 이상의 스캐닝 단위의 처리 순서를 결정하고, 상기 하나 이상의 스캐닝 단위에 포함된 최대 부호화 단위들의 처리 순서 정보에 기초하여 각각의 스캐닝 단위에 포함된 최대 부호화 단위들의 처리 순서를 결정하고, 상기 하나 이상의 스캐닝 단위의 상기 결정된 처리 순서 및 상기 각각의 스캐닝 단위에 포함된 최대 부호화 단위들의 상기 결정된 처리 순서에 따라 상기 현재 픽쳐에 포함된 상기 복수의 최대 부호화 단위들을 복호화하는 복호화부를 포함하는 것을 특징으로 하는 비디오 복호화 장치.
- 비디오 부호화 방법에 있어서,픽쳐로부터 분할된 복수의 최대 부호화 단위들 중 소정 개수의 서로 인접한 최대 부호화 단위들로 구성되는 하나 이상의 스캐닝 단위의 형태를 결정하는 단계;상기 하나 이상의 스캐닝 단위의 형태를 나타내는 정보를 생성하는 단계;현재 픽쳐에 포함된 상기 하나 이상의 스캐닝 단위의 처리 순서 및 각각의 스캐닝 단위에 포함된 최대 부호화 단위들의 처리 순서를 결정하는 단계;상기 하나 이상의 스캐닝 단위의 상기 결정된 처리 순서 및 상기 각각의 스캐닝 단위에 포함된 최대 부호화 단위들의 상기 결정된 처리 순서에 따라 상기 현재 픽쳐에 포함된 상기 복수의 최대 부호화 단위들을 부호화하는 단계;상기 하나 이상의 스캐닝 단위의 처리 순서를 나타내는 정보 및 상기 각각의 스캐닝 단위에 포함된 최대 부호화 단위들의 처리 순서를 나타내는 정보를 생성하는 단계; 및상기 생성된 정보를 포함하는 부호화된 비디오의 비트스트림을 출력하는 단계를 포함하는 것을 특징으로 하는 비디오 부호화 방법.
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107343199A (zh) * | 2017-06-29 | 2017-11-10 | 武汉大学 | 用于hevc中样点的快速自适应补偿方法 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3606077A4 (en) * | 2017-03-22 | 2021-01-06 | Industry - University Cooperation Foundation Hanyang University | LOOP FILTERING PROCESS ACCORDING TO AN ADAPTIVE PIXEL CLASSIFICATION STANDARD |
WO2020213963A1 (ko) | 2019-04-17 | 2020-10-22 | 주식회사 엑스리스 | 영상 신호 부호화/복호화 방법 및 이를 위한 장치 |
CN114173137A (zh) * | 2020-09-10 | 2022-03-11 | 北京金山云网络技术有限公司 | 视频编码方法、装置及电子设备 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100046626A1 (en) * | 2008-08-22 | 2010-02-25 | Microsoft Corporation | Entropy coding/decoding of hierarchically organized data |
KR20110017783A (ko) * | 2009-08-14 | 2011-02-22 | 삼성전자주식회사 | 계층적 부호화 단위의 스캔 순서를 고려한 비디오 부호화 방법 및 장치, 비디오 복호화 방법 및 장치 |
WO2012128453A1 (ko) * | 2011-03-21 | 2012-09-27 | 엘지전자 주식회사 | 영상 부호화/복호화 방법 및 장치 |
KR20130049587A (ko) * | 2011-11-04 | 2013-05-14 | 주식회사 팬택 | 양자화 계수 부/복호화 방법 및 이러한 방법을 사용하는 장치 |
KR20140060579A (ko) * | 2011-11-07 | 2014-05-20 | 제닙 피티이.엘티디. | 영상 복호화 방법 |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3707456B2 (ja) * | 2002-08-12 | 2005-10-19 | ヤマハ株式会社 | 画像データ圧縮方法および画像データ伸張装置並びに伸張プログラム |
KR100614652B1 (ko) * | 2004-11-10 | 2006-08-22 | 삼성전자주식회사 | 전력 소모가 감소된 화상 처리 장치 및 방법 |
JP5089878B2 (ja) * | 2005-10-28 | 2012-12-05 | パナソニック株式会社 | 画像符号化装置 |
US8582656B2 (en) * | 2007-04-13 | 2013-11-12 | Apple Inc. | Method and system for video encoding and decoding |
KR20090097689A (ko) * | 2008-03-12 | 2009-09-16 | 삼성전자주식회사 | 영상의 인트라 예측 부호화/복호화 방법 및 장치 |
US9300976B2 (en) * | 2011-01-14 | 2016-03-29 | Cisco Technology, Inc. | Video encoder/decoder, method and computer program product that process tiles of video data |
US9325999B2 (en) * | 2011-03-10 | 2016-04-26 | Sharp Kabushiki Kaisha | Video decoder for slices |
US20120243614A1 (en) * | 2011-03-22 | 2012-09-27 | Danny Hong | Alternative block coding order in video coding |
US9445093B2 (en) * | 2011-06-29 | 2016-09-13 | Qualcomm Incorporated | Multiple zone scanning order for video coding |
US8767824B2 (en) * | 2011-07-11 | 2014-07-01 | Sharp Kabushiki Kaisha | Video decoder parallelization for tiles |
US9398307B2 (en) * | 2011-07-11 | 2016-07-19 | Sharp Kabushiki Kaisha | Video decoder for tiles |
AU2012294053B2 (en) * | 2011-08-11 | 2016-07-07 | Sun Patent Trust | Image coding method, image decoding method, image coding apparatus, image decoding apparatus, and image coding and decoding apparatus |
MX2014002347A (es) * | 2011-08-29 | 2014-04-25 | Ibex Pt Holdings Co Ltd | Aparato para decodificar informacion de movimiento de modo de fusion. |
US9247258B2 (en) * | 2011-10-26 | 2016-01-26 | Qualcomm Incorporated | Unified design for picture partitioning schemes |
US9813704B2 (en) * | 2011-10-31 | 2017-11-07 | Nanyang Technological University | Lossless image and video compression |
MX355319B (es) * | 2011-11-08 | 2018-04-16 | Kt Corp | Método y aparato para exploración de coeficientes con base en el modo de división de la unidad de predicción. |
US10244246B2 (en) * | 2012-02-02 | 2019-03-26 | Texas Instruments Incorporated | Sub-pictures for pixel rate balancing on multi-core platforms |
TWI752680B (zh) * | 2012-04-13 | 2022-01-11 | 美商Ge影像壓縮有限公司 | 用以自資料串流重構圖像的解碼器及方法、用以將圖像編碼入資料串流的編碼器及方法、與相關電腦程式及機器可存取媒體 |
US10257522B2 (en) * | 2012-06-25 | 2019-04-09 | Sony Corporation | Image decoding device, image decoding method, image encoding device, and image encoding method |
KR102249484B1 (ko) * | 2012-06-26 | 2021-05-12 | 엘지전자 주식회사 | 비디오 인코딩 방법, 비디오 디코딩 방법 및 이를 이용하는 장치 |
WO2014084656A1 (ko) * | 2012-11-29 | 2014-06-05 | 엘지전자 주식회사 | 복수의 레이어를 지원하는 영상 부호화/복호화 방법 및 장치 |
US20140192899A1 (en) * | 2013-01-09 | 2014-07-10 | Mediatek Inc. | Method and apparatus for referring to bitstream address related information derived from segment of multi-tile picture to determine bitstream start address of tile of multi-tile picture |
US10250897B2 (en) * | 2013-07-14 | 2019-04-02 | Sharp Kabushiki Kaisha | Tile alignment signaling and conformance constraints |
CN113810688B (zh) * | 2015-05-12 | 2023-07-18 | 三星电子株式会社 | 视频编码方法、视频解码方法以及计算机可读介质 |
-
2016
- 2016-11-24 CN CN202110376502.4A patent/CN113115036A/zh not_active Withdrawn
- 2016-11-24 CA CA3005035A patent/CA3005035A1/en active Pending
- 2016-11-24 KR KR1020217042767A patent/KR20220002736A/ko active IP Right Grant
- 2016-11-24 MX MX2018006141A patent/MX2018006141A/es unknown
- 2016-11-24 KR KR1020187013640A patent/KR102345660B1/ko active IP Right Grant
- 2016-11-24 EP EP21156504.9A patent/EP3840379A1/en not_active Withdrawn
- 2016-11-24 EP EP16868919.8A patent/EP3352460A4/en not_active Withdrawn
- 2016-11-24 CN CN201680068886.0A patent/CN108293121B/zh active Active
- 2016-11-24 US US15/775,700 patent/US20180352231A1/en not_active Abandoned
- 2016-11-24 WO PCT/KR2016/013662 patent/WO2017091023A1/ko active Application Filing
-
2018
- 2018-05-17 MX MX2022000965A patent/MX2022000965A/es unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100046626A1 (en) * | 2008-08-22 | 2010-02-25 | Microsoft Corporation | Entropy coding/decoding of hierarchically organized data |
KR20110017783A (ko) * | 2009-08-14 | 2011-02-22 | 삼성전자주식회사 | 계층적 부호화 단위의 스캔 순서를 고려한 비디오 부호화 방법 및 장치, 비디오 복호화 방법 및 장치 |
WO2012128453A1 (ko) * | 2011-03-21 | 2012-09-27 | 엘지전자 주식회사 | 영상 부호화/복호화 방법 및 장치 |
KR20130049587A (ko) * | 2011-11-04 | 2013-05-14 | 주식회사 팬택 | 양자화 계수 부/복호화 방법 및 이러한 방법을 사용하는 장치 |
KR20140060579A (ko) * | 2011-11-07 | 2014-05-20 | 제닙 피티이.엘티디. | 영상 복호화 방법 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3352460A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107343199A (zh) * | 2017-06-29 | 2017-11-10 | 武汉大学 | 用于hevc中样点的快速自适应补偿方法 |
CN107343199B (zh) * | 2017-06-29 | 2020-04-24 | 武汉大学 | 用于hevc中样点的快速自适应补偿方法 |
Also Published As
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CN108293121A (zh) | 2018-07-17 |
EP3352460A1 (en) | 2018-07-25 |
MX2022000965A (es) | 2022-02-14 |
US20180352231A1 (en) | 2018-12-06 |
MX2018006141A (es) | 2018-08-01 |
CN108293121B (zh) | 2021-04-23 |
KR20220002736A (ko) | 2022-01-06 |
EP3840379A1 (en) | 2021-06-23 |
CA3005035A1 (en) | 2017-06-01 |
CN113115036A (zh) | 2021-07-13 |
KR102345660B1 (ko) | 2021-12-30 |
EP3352460A4 (en) | 2019-02-27 |
KR20180075554A (ko) | 2018-07-04 |
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