WO2013062196A1 - 영상 복호화 장치 - Google Patents
영상 복호화 장치 Download PDFInfo
- Publication number
- WO2013062196A1 WO2013062196A1 PCT/KR2012/003082 KR2012003082W WO2013062196A1 WO 2013062196 A1 WO2013062196 A1 WO 2013062196A1 KR 2012003082 W KR2012003082 W KR 2012003082W WO 2013062196 A1 WO2013062196 A1 WO 2013062196A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- intra prediction
- prediction mode
- mode
- block
- reference pixel
- Prior art date
Links
Images
Classifications
-
- 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
- H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
- H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
- H04N19/51—Motion estimation or motion compensation
-
- 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
- H04N19/103—Selection of coding mode or of prediction mode
- H04N19/105—Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
-
- 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
- H04N19/103—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
-
- 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
- H04N19/124—Quantisation
-
- 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
- H04N19/13—Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]
-
- 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
- H04N19/134—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
- 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
-
- 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
- H04N19/134—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
- 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
- H04N19/159—Prediction type, e.g. intra-frame, inter-frame or bidirectional frame prediction
-
- 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
- H04N19/169—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
-
- 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
- H04N19/169—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
- H04N19/184—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 bits, e.g. of the compressed video stream
-
- 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
- H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
- H04N19/593—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
-
- 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
- H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
-
- 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
- H04N19/80—Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation
- H04N19/82—Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation involving filtering within a prediction loop
-
- 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
- H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
-
- 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
- H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
- H04N19/91—Entropy coding, e.g. variable length coding [VLC] or arithmetic coding
-
- 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
- H04N19/117—Filters, e.g. for pre-processing or post-processing
-
- 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
- H04N19/169—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
- H04N19/182—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 a pixel
-
- 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
- H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
- H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding
Definitions
- the present invention relates to an image decoding apparatus, and more particularly, to an apparatus for determining a method of decoding a prediction mode index of a current block according to a prediction mode group indicator of a current block, and decoding the prediction mode index according to the determined scheme. It is about.
- image data In order to efficiently store or transmit image data, image data must be encoded.
- Techniques for encoding image data include MPEG-1, MPEG-2, MPEG-4, and H.264 / MPEG-4 Advanced Video coding (AVC).
- the techniques divide one picture into macroblocks, determine whether to perform intra encoding or inter encoding on a macroblock basis, and then encode each macroblock in the determined manner.
- intra prediction is performed to increase the efficiency of intra coding. That is, instead of referring to a reference picture in order to encode a current block, a prediction block is generated using pixel values spatially adjacent to the current block to be encoded. In detail, an intra prediction mode having less distortion compared to an original macro block is selected using adjacent pixel values, and a prediction block for a current block to be encoded is generated using the selected intra prediction mode and adjacent pixel values. Then, a residual block composed of difference signals between the current block and the prediction block is generated, and the residual block is transformed, quantized, and entropy encoded. In addition, the intra prediction mode used to generate the prediction block is also encoded.
- An object of the present invention is to generate an MPM group using the intra prediction mode of the left and upper blocks of the current block, and to reduce the number of bits required to encode the intra prediction mode of the current block using the MPM group,
- the present invention provides a method and apparatus for improving the compression efficiency of an image.
- an image decoding apparatus is a parser for decoding intra prediction information from a received bitstream and the intra prediction mode of the current prediction unit by using the intra prediction information.
- An intra prediction mode decoder and a prediction block generation unit for generating a prediction block using the intra prediction mode, wherein the intra prediction information includes a prediction mode group indicator and a prediction mode index, Accordingly, the prediction mode index decoding method is determined.
- the apparatus for decoding an image selects the debinarization method of the prediction mode index according to the prediction mode indicator, and the prediction mode group indicator indicates whether the intra prediction mode of the current block belongs to the MPM group.
- the prediction block generation unit of the image decoding apparatus includes a reference pixel generation unit for generating a reference pixel and a reference pixel filtering unit for filtering the reference pixel, and the reference pixel filtering unit is configured according to the size of the prediction block and the intra prediction mode. Adaptively filter reference pixels.
- An image decoding apparatus includes a parser that decodes intra prediction information from a received bitstream, an intra prediction mode decoder that decodes an intra prediction mode of a current prediction unit by using the intra prediction information, and the intra prediction.
- a prediction block generation unit generating a prediction block using a mode, wherein the intra prediction information includes a prediction mode group indicator and a prediction mode index, and determines a decoding method of the prediction mode index according to the prediction mode group indicator.
- the effective intra prediction modes of the left and upper blocks of the current block modes that are likely to be identical to the intra prediction modes of the current block are included in the MPM group, and statistical characteristics when not belonging to the MPM group, By varying the encoding and decoding methods of the prediction mode index according to the characteristics, the amount of information of the intra prediction mode to be encoded and decoded can be reduced. In addition, the encoding efficiency of the intra prediction mode can be improved by changing the encoding method of the prediction mode index according to the intra prediction mode group indicator.
- FIG. 1 is a block diagram illustrating a video encoding apparatus according to an embodiment of the present invention.
- FIG. 2 is a block diagram illustrating a video decoding apparatus according to an embodiment of the present invention.
- FIG 3 illustrates a method of generating an intra prediction block in a video decoding apparatus, according to an embodiment of the present invention.
- FIG. 4 is a diagram illustrating an intra prediction mode according to an embodiment of the present invention.
- the video encoding apparatus and the video decoding apparatus may be a personal computer, a notebook computer, a personal digital assistant, a portable multimedia player, a smart phone, a wireless communication terminal, a server providing a service such as a TV, or the like.
- the video encoding apparatus and the video decoding apparatus may include a communication device such as a communication modem for communicating with various devices or a wired / wireless communication network, a memory for encoding or decoding an image, or storing various programs and data for encoding or decoding; It may be a device having a microprocessor or the like for executing and controlling a program.
- FIG. 1 is a block diagram illustrating a video encoding apparatus according to an embodiment of the present invention.
- the video encoding apparatus 100 may include an intra predictor 110, an inter predictor 120, a transform and quantizer 130, an entropy encoder 140, an inverse quantization and inverse transform unit ( 150, a post processor 160, a picture buffer 170, a subtractor 190, and an adder 195.
- the intra prediction unit 110 generates an intra prediction block by using the reconstructed pixels of the picture or slice that includes the current block.
- the intra prediction unit 110 selects one of a preset number of intra prediction modes according to the size of the current block to be predictively encoded, and generates a prediction block according to the selected intra prediction mode.
- the inter prediction unit 120 performs motion estimation using reference pictures stored in the picture buffer 170, and determines a reference picture index and a motion vector for motion prediction.
- the inter prediction block of the current block is generated using the reference picture index and the motion vector.
- the transform and quantization unit 130 transforms and quantizes the residual block of the prediction block generated by the current block and the intra prediction unit 110 or the inter prediction unit 120.
- the transformation is done by one-dimensional transformation matrices in the horizontal and vertical directions.
- the residual block of intra prediction is transformed by a transform matrix determined according to the size of the transform block (ie, the size of the residual block) and the intra prediction mode.
- the residual block of inter prediction is transformed by a predetermined transform matrix.
- the transform and quantization unit 130 quantizes the transform block using a quantization step size.
- the quantization step size may be changed for each coding unit having a predetermined size or more.
- the quantized transform block is provided to the inverse quantization and inverse transform unit 150 and the entropy encoder 140.
- the inverse quantization and inverse transform unit 150 inverse quantizes the quantized transform block, and inversely transforms the inverse quantized transform block to restore a residual block.
- the adder adds the residual block reconstructed by the inverse quantization and inverse transform unit 150 and the prediction block from the intra predictor 110 or the inter predictor 120 to generate a reconstructed block.
- the post processor 160 is to improve the quality of the reconstructed picture and includes a deblocking filter 161, an offset applying unit 162, and a loop filtering unit 163.
- the deblocking filtering unit 161 adaptively applies the deblocking filter to the boundary of the prediction block and the transform transform block.
- the boundary can be defined by a boundary lying on an 8x8 grid.
- the deblocking filtering unit 161 determines a boundary to filter, determines the boundary strength, and determines whether to apply a deblocking filter to the boundary when the boundary strength is greater than zero. do. If it is decided to filter the boundary, a filter to be applied to the boundary is selected and the boundary is filtered by the selected filter.
- the offset applying unit 162 determines whether to apply an offset on a picture or slice basis in order to reduce a distortion between the original pixel and the pixel in the image which has passed through the deblocking filtering unit.
- the slice may be divided into a plurality of offset regions, and an offset type may be determined for each offset region.
- the offset type may include a predetermined number of edge offset types and band offset types. If the offset type is an edge offset type, the edge type to which each pixel belongs is determined, and an offset corresponding thereto is applied. The edge type is determined based on a distribution of two pixel values adjacent to the current pixel.
- the loop filtering unit 163 adaptively loop-filters the reconstructed image based on a value obtained by comparing the reconstructed image passed through the offset applying unit 162 with the original image. It is determined whether to loop-filter the reconstructed image in coding units.
- the size and coefficients of the loop filter to be applied according to each coding unit may vary.
- Information indicating whether the adaptive loop filter is applied to each coding unit may be included in each slice header. In the case of a chrominance signal, it may be determined whether to apply an adaptive loop filter on a picture basis. Therefore, the slice header or the picture header may include information indicating whether each of the color difference components is filtered.
- the picture buffer 170 receives the post-processed image data from the post processor 160 and restores and stores the image in a picture unit.
- the picture may be an image in a frame unit or an image in a field unit.
- the entropy encoder 140 entropy encodes the quantization coefficient information quantized by the transform and quantizer 130, intra prediction information received from the intra predictor 140, motion information received from the inter predictor 150, and the like. .
- the entropy encoder 140 includes a scan unit 145 to convert coefficients of the quantized transform block into one-dimensional quantization coefficient information.
- the scan unit 145 determines a scan type for transforming coefficients of the quantized transform block in one dimension.
- the scan type may vary depending on the directional intra prediction mode and the size of the transform block.
- the scan order of the quantization coefficients scans in the reverse direction.
- the transform coefficients are divided into a plurality of subblocks and scanned.
- the scan type applied to the transform coefficients of each subblock is the same.
- the scan type applied between the lower blocks may be a zigzag scan or may be the same as the scan type applied to the conversion coefficients of the respective lower blocks.
- FIG. 2 is a block diagram illustrating a video decoding apparatus 200 according to an embodiment of the present invention.
- the video decoding apparatus 200 may include an entropy decoder 210, an inverse quantizer 220, an inverse transform unit 230, an intra predictor 240, an inter predictor 250, and the like.
- the processor 260 includes a picture buffer 270 and an adder 280.
- the entropy decoder 210 decodes the received bitstream and separates the received bitstream into intra prediction information, inter prediction information, and quantization coefficient information.
- the entropy decoder 210 supplies the decoded intra prediction information to the intra predictor 240, and supplies the decoded inter prediction information to the inter predictor 250.
- Entropy decoding 210 includes an inverse scan unit 215 for inverse scanning the decoded quantization coefficient information.
- the inverse scan unit 215 converts the quantization coefficient information into a quantization block of a two-dimensional array.
- One of a plurality of scan types is selected for the conversion.
- the scan type may vary depending on the directional intra prediction mode and the size of the transform block.
- the scan order of the quantization coefficients scans in the reverse direction.
- the transform coefficients are divided into a plurality of subblocks and scanned.
- the scan type applied to the transform coefficients of each subblock is the same.
- the scan type applied between the lower blocks may be a zigzag scan or may be the same as the scan type applied to the conversion coefficients of the respective lower blocks.
- the inverse quantization unit 220 determines a quantization step size predictor of the current coding unit, and reconstructs the quantization step size of the current coding unit by adding the determined quantization step size predictor and the received residual quantization step size.
- the inverse quantization unit 220 inversely quantizes the quantization block by using the quantization step size and the inverse quantization matrix.
- the quantization matrix is determined according to the size and prediction mode of the quantization block. That is, a quantization matrix is also selected for a quantization block of the same size based on at least one of the prediction mode and the intra prediction mode of the current block.
- the inverse transform unit 230 inversely transforms the inverse quantized transform block to restore the residual block.
- An inverse transform matrix to be applied to the inverse quantization block may be determined according to a prediction mode and an intra prediction mode.
- the adder 280 generates a reconstructed block by adding the residual block reconstructed by the inverse transform unit 230 and the prediction block generated by the intra predictor 240 or the inter predictor 250.
- the intra predictor 240 restores the intra prediction mode of the current block based on the intra prediction information received from the entropy decoder 210.
- the prediction block is generated according to the reconstructed intra prediction mode.
- the inter prediction unit 250 reconstructs the reference picture index and the motion vector based on the inter prediction information received from the entropy decoding unit 210.
- the prediction block for the current block is generated using the reference picture index and the motion vector.
- the prediction block is generated by applying the selected interpolation filter.
- the operation of the post processor 260 is the same as the operation of the post processor 160 of FIG. 1, it is omitted.
- the picture buffer 270 stores the decoded image post-processed by the post processor 260 in picture units.
- FIG 3 illustrates a method of generating an intra prediction block according to an embodiment of the present invention.
- the intra prediction information is entropy decoded from the received bitstream (S110).
- the intra prediction information includes an intra prediction mode group indicator and a prediction mode index.
- the intra prediction mode group indicator indicates whether the intra prediction mode of the current block belongs to an MPM group or a group other than the MPM.
- the prediction mode index is information indicating a specific intra prediction mode in the intra prediction mode group indicated by the intra prediction mode group indicator.
- the intra prediction mode group indicator may be received in the form of an unsigned integer. In this case, the intra prediction mode group indicator may be used without entropy decoding. Alternatively, the intra prediction mode group indicator may be adaptively entropy coded according to the type of the current slice. For example, entropy coding may be performed using a context determined according to the slice type. Therefore, the restoration may be performed using a context determined according to the current slice type.
- the prediction mode index is entropy coded in a different manner than in the case of belonging to the MPM group. Therefore, entropy decoding is performed in a mutual manner even in entropy decoding.
- the prediction mode index is binarized and entropy coded by a truncated Exp-Golomb code or a truncated unary scheme. Therefore, after obtaining the binarization information by performing entropy decoding, the prediction mode index is restored using the above schemes.
- the prediction mode index may be binarized to a fixed length. Therefore, after obtaining the binarization information by performing entropy decoding, the prediction mode index may be restored.
- the MPM group is generated using the intra prediction modes of blocks adjacent to the current block, and the intra prediction mode of the current block is restored using the MPM group (S120).
- the MPM group consists of three intra prediction modes. It demonstrates with reference to FIG. 4 is a diagram illustrating an intra prediction mode according to an embodiment of the present invention.
- the MPM group consists of the two intra prediction modes and one additional intra prediction mode.
- the additional intra prediction mode may be a planner mode.
- the additional intra prediction mode may be a DC mode.
- the additional intra prediction mode may be a vertical mode or a horizontal mode.
- the additional intra prediction mode may be an intra prediction mode having a directionality between the two intra prediction modes, or may be a DC mode or a planner mode.
- the MPM group includes the intra prediction mode and two additional intra prediction modes.
- the two additional intra prediction modes are set to two intra prediction modes adjacent to the intra prediction mode. If the intra prediction mode is a DC mode, the two additional intra prediction modes may be a planner mode and a vertical mode.
- the MPM group includes the intra prediction mode and two additional intra prediction modes.
- the two additional intra prediction modes are determined by the intra prediction mode.
- the MPM group may include a DC mode, a planner mode, and a vertical mode.
- the intra prediction mode indicated by the prediction mode index is selected from the MPM group to determine the intra prediction mode of the current block.
- the intra prediction mode group indicator may be flag information indicating whether the intra prediction mode of the current block belongs to an MPM group or a group other than the MPM.
- the intra prediction unit 240 may determine that the prediction mode index is one of intra prediction modes (hereinafter, referred to as residual intra prediction modes) except for intra prediction modes belonging to the MPM group.
- the indicated intra prediction mode is determined as the intra prediction mode of the current block.
- the prediction mode index given to the remaining intra prediction modes depends on the configuration of the MPM group. That is, the decoded prediction mode index indicates the index of the remaining intra prediction modes rearranged according to the configuration of the MPM group. Accordingly, the intra prediction mode of the current block is selected from the remaining intra prediction modes according to the decoded prediction mode index and the intra prediction modes belonging to the MPM group.
- the residual intra prediction modes of the current block are rearranged in order of mode number, and the intra prediction mode of the order corresponding to the received prediction mode index is selected as the intra prediction mode of the current block.
- the intra prediction mode of the current block may be determined by comparing the intra prediction mode index of the current block with an intra prediction mode number belonging to the MPM group.
- the above method may be applied to a case in which a mode number 2 is assigned to a DC and a mode number 34 is assigned to a planner mode, and the directional modes are assigned to the remaining modes.
- the method may be applied by applying a small mode number (for example, mode number 0) to the planner mode. Can be. In this case, the mode numbers of other subordinated mode numbers are increased by one.
- the intra prediction mode of the current block is a planner mode and the remaining intra prediction mode includes a planner mode
- the intra prediction mode index may include zero.
- the intra prediction mode in the order corresponding to the prediction mode index is arranged in the order of planner mode, DC mode, and directional modes.
- Intra prediction mode may be set.
- mode number 0 may be assigned to planner mode
- mode number 1 may be assigned to DC mode
- mode number 0 may be assigned to DC mode and mode number 1 to planner mode.
- the intra prediction mode of the current block may be determined by comparing the intra prediction mode index of the current block with the intra prediction mode number belonging to the MPM group.
- the size of the prediction block is determined using the information indicating the transform size of the current block (S130).
- the prediction block is generated using the intra prediction mode of the current block and the reference pixels of the current block.
- the reference pixels are pixels reconstructed or pixels generated before the current block.
- the size of the prediction block is smaller than the size of the current block, that is, when the current block is divided into a plurality of subblocks and intra prediction is performed, the same intra prediction mode is generated when the prediction block of each subblock is generated. Intra prediction mode of the current block) is used. Further, the predictive blocks of the second and subsequent subblocks in the decoding order are generated using the reconstruction pixels of the preceding subblocks. Therefore, after completion of prediction block generation, residual block generation, and reconstruction block generation in each subblock unit, a prediction block of a next subblock is generated.
- the reference pixels are pixels that have already been decoded and reconstructed. If at least one of the reference pixels is determined to be invalid, reference pixels are generated (S150).
- L is the number of bits for indicating the gradation of the luminance component.
- reference pixels located at the nearest position among the valid reference pixels are copied to generate reference pixels.
- the reference pixels are adaptively filtered according to the reconstructed intra prediction mode and the size of the prediction block (S170).
- Reference pixels are not filtered when the intra prediction mode is the DC mode. Reference pixels are not filtered even when the intra prediction mode is the vertical mode and the horizontal mode. However, when the intra prediction mode is directional modes other than the vertical mode and the horizontal mode, the reference pixel is adaptively filtered according to the intra prediction mode and the size of the prediction block. When the size of the prediction block is 4x4, the reference pixel may not be filtered to reduce the complexity regardless of the intra prediction mode.
- the filtering is for smoothing the amount of change in the pixel value between the reference pixels, and uses a low-pass filter.
- the low-pass filter may be [1, 2, 1], which is a 3-tap filter, or [1, 2, 4, 2, 1], which is a 5-tap filter.
- the size of the prediction block is 8x8 to 32x32, the reference pixel is filtered in a larger number of intra prediction modes as the size of the prediction block increases.
- a prediction block is generated according to the intra prediction mode (S180).
- the reference pixels used in the prediction block may be pixels adaptively filtered according to the size of the prediction block and the intra prediction mode.
- the prediction pixel at the position adjacent to the reference pixels may be generated using the average value and the weighted average of the reference pixel adjacent to the prediction pixel.
- the prediction pixel can be generated in the same manner as in the DC mode.
- the reference pixel located in the vertical direction becomes a prediction pixel.
- prediction pixels adjacent to the left pixel may be generated using the vertical reference pixels and the amount of change of the left reference pixels.
- the change amount represents a change amount between a corner reference pixel and a reference pixel adjacent to the prediction pixel.
- the prediction pixel may be generated in the same manner as the vertical mode is different from the vertical mode.
- the method may be performed by the intra predictor 110 and the entropy encoder 140 of FIG. 1.
- the intra prediction mode of the current block is determined.
- a flag indicating the MPM group ie, an intra prediction mode group indicator
- a prediction mode index for specifying an intra prediction mode in the MPM group are determined.
- the intra prediction mode is specified from among a flag not indicating the MPM group and intra prediction modes excluding intra prediction modes (hereinafter, referred to as residual intra prediction modes). Determine the prediction mode index.
- the prediction mode index indicating the intra prediction mode of the current block among the remaining intra prediction modes depends on the configuration of the MPM group. That is, the prediction mode index represents the indexes of the remaining intra prediction modes rearranged according to the configuration of the MPM group. Accordingly, the prediction mode index is determined according to the intra prediction mode of the current block and the intra prediction modes belonging to the MPM group.
- the residual intra prediction modes of the current block may be rearranged in order of mode number, and the order of the intra prediction modes of the current block may be determined as the prediction mode index.
- the prediction mode index may be determined by comparing a mode number of the intra prediction mode of the current block and an intra prediction mode number belonging to the MPM group.
- the above method may be applied to a case in which a mode number 2 is assigned to a DC and a mode number 34 is assigned to a planner mode, and the directional modes are assigned to the remaining modes.
- the method may be applied by applying a small mode number (for example, mode number 0) to the planner mode. Can be.
- the mode numbers of other subordinated mode numbers are increased by one. Or it may give the lowest indices to the non-directional modes.
- the intra prediction mode index may include zero.
- the intra prediction mode in the order corresponding to the prediction mode index is arranged in the order of planner mode, DC mode, and directional modes.
- Intra prediction mode may be set.
- mode number 0 may be assigned to planner mode
- mode number 1 may be assigned to DC mode
- mode number 0 may be assigned to DC mode and mode number 1 to planner mode.
- the intra prediction mode of the current block may be determined by comparing the intra prediction mode index of the current block with the intra prediction mode number belonging to the MPM group.
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
Abstract
Description
Claims (7)
- 수신된 비트스트림으로부터 인트라 예측 정보를 복호화하는 파싱부;상기 인트라 예측 정보를 이용하여 현재 예측 유닛의 인트라 예측 모드를 복호화하는 인트라 예측 모드 복호화부; 및상기 인트라 예측 모드를 이용하여 예측블록을 생성하는 예측블록 생성부를 포함하고,상기 인트라 예측 정보는 예측모드 그룹 지시자 및 예측모드 인덱스를 포함하고, 상기 예측모드 그룹 지시자에 따라 상기 예측모드 인덱스 복호화 방법이 달라지는 것을 특징으로 하는 영상 복호화 장치.
- 제1항에 있어서, 상기 예측 모드 지시자에 따라 상기 예측모드 인덱스의 역이진화 방법이 달라지는 것을 특징으로 하는 영상 복호화 장치.
- 제1항에 있어서, 상기 예측모드 그룹 지시자는 현재 블록의 인트라 예측모드가 MPM 그룹에 속하는지 여부를 나타내는 것을 특징으로 하는 영상 복호화 장치.
- 제3항에 있어서, MPM 그룹은 3개의 인트라 예측 모드를 포함하는 것을 특징으로 하는 영상 복호화 장치.
- 제1항에 있어서, 상기 예측 블록 생성부는 참조화소를 생성하는 참조화소 생성부 및 참조화소를 필터링하는 참조화소 필터링부를 포함하고, 상기 참조화소 필터링부는 상기 예측 블록의 크기 및 상기 인트라 예측 모드에 따라 상기 참조화소들을 적응적으로 필터링하는 것을 특징으로 하는 영상 복호화 장치.
- 제5항에 있어서, 상기 참조화소 생성부는 유효하지 않은 참조화소가 적어도 하나 존재하는 경우, 상기 참조화소를 생성하는 것을 특징으로 하는 영상 복호화 장치.
- 제6항에 있어서, 상기 유효하지 않은 참조화소의 일방으로만 유효한 참조화소가 존재하는 경우, 가장 가까운 위치의 유효한 참조화소를 복사하여 유효하지 않은 참조화소를 생성하는 것을 특징으로 하는 영상 복호화 장치.
Priority Applications (16)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201280047214.3A CN103931180B (zh) | 2011-10-24 | 2012-04-20 | 图像解码设备 |
EP15001467.8A EP2942956B1 (en) | 2011-10-24 | 2012-04-20 | Image decoding apparatus |
EP15001465.2A EP2945376B1 (en) | 2011-10-24 | 2012-04-20 | Image decoding apparatus |
US14/127,112 US9025662B2 (en) | 2011-10-24 | 2012-04-20 | Image decoding apparatus |
PL15001466T PL2945381T3 (pl) | 2011-10-24 | 2012-04-20 | Aparat do dekodowania obrazu |
EP21178975.5A EP3917147A1 (en) | 2011-10-24 | 2012-04-20 | Image decoding apparatus |
MX2014003543A MX2014003543A (es) | 2011-10-24 | 2012-04-20 | Aparato para la decodificacion de imagenes. |
EP15001466.0A EP2945381B1 (en) | 2011-10-24 | 2012-04-20 | Image decoding apparatus |
JP2014531702A JP5728671B2 (ja) | 2011-10-24 | 2012-04-20 | 映像復号化装置 |
PL15001467T PL2942956T3 (pl) | 2011-10-24 | 2012-04-20 | Aparat do dekodowania obrazu |
EP15001468.6A EP2942954B1 (en) | 2011-10-24 | 2012-04-20 | Image decoding apparatus |
EP12844183.9A EP2797324A4 (en) | 2011-10-24 | 2012-04-20 | DEVICE FOR IMAGE DECODING |
PL15001468T PL2942954T3 (pl) | 2011-10-24 | 2012-04-20 | Aparat do dekodowania obrazu |
PL15001465T PL2945376T3 (pl) | 2011-10-24 | 2012-04-20 | Aparat do dekodowania obrazu |
US14/677,736 US9615105B2 (en) | 2011-10-24 | 2015-04-02 | Image decoding apparatus |
CY20201100599T CY1123086T1 (el) | 2011-10-24 | 2020-06-29 | Συσκευη αποκωδικοποιησης εικονας |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20110108452 | 2011-10-24 | ||
KR10-2011-0108452 | 2011-10-24 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/127,112 A-371-Of-International US9025662B2 (en) | 2011-10-24 | 2012-04-20 | Image decoding apparatus |
US14/677,736 Continuation US9615105B2 (en) | 2011-10-24 | 2015-04-02 | Image decoding apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013062196A1 true WO2013062196A1 (ko) | 2013-05-02 |
Family
ID=48168001
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2012/003075 WO2013062192A1 (ko) | 2011-10-24 | 2012-04-20 | 인트라 예측 정보 부호화 방법 및 장치 |
PCT/KR2012/003082 WO2013062196A1 (ko) | 2011-10-24 | 2012-04-20 | 영상 복호화 장치 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2012/003075 WO2013062192A1 (ko) | 2011-10-24 | 2012-04-20 | 인트라 예측 정보 부호화 방법 및 장치 |
Country Status (18)
Country | Link |
---|---|
US (6) | US9025662B2 (ko) |
EP (6) | EP2942956B1 (ko) |
JP (5) | JP5728671B2 (ko) |
KR (6) | KR101947657B1 (ko) |
CN (9) | CN107181942B (ko) |
CY (1) | CY1123086T1 (ko) |
DK (1) | DK2942954T3 (ko) |
ES (4) | ES2805038T3 (ko) |
HK (6) | HK1214053A1 (ko) |
HR (1) | HRP20201328T1 (ko) |
HU (4) | HUE051688T2 (ko) |
LT (1) | LT2942954T (ko) |
MX (1) | MX2014003543A (ko) |
PL (4) | PL2945376T3 (ko) |
PT (1) | PT2942954T (ko) |
RS (1) | RS60704B1 (ko) |
SI (1) | SI2942954T1 (ko) |
WO (2) | WO2013062192A1 (ko) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015507903A (ja) * | 2012-01-20 | 2015-03-12 | パンテック カンパニー リミテッド | 画面内予測方法及び画像復号化装置 |
US20160127744A1 (en) | 2012-01-20 | 2016-05-05 | Sony Corporation | Logical intra mode naming in hevc video coding |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107071426B (zh) | 2010-08-17 | 2019-07-12 | M&K控股株式会社 | 用于编码帧内预测模式的方法 |
US11284072B2 (en) | 2010-08-17 | 2022-03-22 | M&K Holdings Inc. | Apparatus for decoding an image |
KR20130049525A (ko) * | 2011-11-04 | 2013-05-14 | 오수미 | 잔차 블록 복원을 위한 역변환 방법 |
KR20130049522A (ko) * | 2011-11-04 | 2013-05-14 | 오수미 | 인트라 예측 블록 생성 방법 |
CN103220506B (zh) | 2012-01-19 | 2015-11-25 | 华为技术有限公司 | 一种编解码方法和设备 |
US20150365698A1 (en) * | 2013-04-11 | 2015-12-17 | Mediatek Inc. | Method and Apparatus for Prediction Value Derivation in Intra Coding |
CN112188207B (zh) | 2014-10-31 | 2023-10-20 | 三星电子株式会社 | 使用高精度跳过编码的视频编码设备和视频解码设备及其方法 |
WO2016204478A1 (ko) * | 2015-06-15 | 2016-12-22 | 엘지전자(주) | 인트라 예측 모드 기반 영상 처리 방법 및 이를 위한 장치 |
GB2596767B (en) * | 2015-08-28 | 2022-07-06 | Kt Corp | Method and device for processing video signal |
EP3361726A1 (en) | 2015-11-24 | 2018-08-15 | Samsung Electronics Co., Ltd. | Method and device for video decoding and method and device for video encoding |
CN113810702A (zh) * | 2016-04-29 | 2021-12-17 | 世宗大学校产学协力团 | 用于对图像信号进行编码和解码的方法和装置 |
CN117221589A (zh) * | 2016-06-22 | 2023-12-12 | Lx 半导体科技有限公司 | 图像编码/解码设备以及传输图像数据的设备 |
EP4319162A3 (en) * | 2016-06-24 | 2024-04-10 | KT Corporation | Method and apparatus for processing video signal |
EP3301915A1 (en) * | 2016-09-30 | 2018-04-04 | Thomson Licensing | Method and apparatus for omnidirectional video coding with adaptive intra most probable modes |
WO2018080135A1 (ko) * | 2016-10-28 | 2018-05-03 | 한국전자통신연구원 | 영상 부호화/복호화 방법, 장치 및 비트스트림을 저장한 기록 매체 |
CN117041570A (zh) * | 2016-11-29 | 2023-11-10 | 韩国电子通信研究院 | 图像编码/解码方法和用于存储比特流的记录介质 |
CN117119185A (zh) | 2017-01-02 | 2023-11-24 | Lx 半导体科技有限公司 | 图像编码/解码设备以及发送图像数据的设备 |
KR20180080115A (ko) | 2017-01-02 | 2018-07-11 | 한양대학교 산학협력단 | 참조 화소에 대하여 적응적 필터링을 수행하기 위한 화면 내 예측 방법 및 장치 |
WO2018124853A1 (ko) * | 2017-01-02 | 2018-07-05 | 한양대학교 산학협력단 | 참조 화소에 대하여 적응적 필터링을 수행하기 위한 화면 내 예측 방법 및 장치 |
US10742975B2 (en) | 2017-05-09 | 2020-08-11 | Futurewei Technologies, Inc. | Intra-prediction with multiple reference lines |
WO2019023200A1 (en) * | 2017-07-24 | 2019-01-31 | Arris Enterprises Llc | INTRA-MODE JVET CODING |
US10999604B2 (en) * | 2018-04-13 | 2021-05-04 | Mediatek Inc. | Adaptive implicit transform setting |
CN110620926B (zh) * | 2018-06-20 | 2022-01-04 | 浙江大学 | 一种帧内预测模式编解码方法及装置 |
CN112204965A (zh) * | 2018-06-21 | 2021-01-08 | 株式会社Kt | 用于处理视频信号的方法和设备 |
KR20200006932A (ko) * | 2018-07-11 | 2020-01-21 | 인텔렉추얼디스커버리 주식회사 | 화면내 예측 기반의 비디오 코딩 방법 및 장치 |
US11570428B2 (en) * | 2018-09-19 | 2023-01-31 | Electronics And Telecommunications Research Institute | Intra prediction mode encoding/decoding method and device, and recording medium in which bitstream is stored |
IL281823B2 (en) * | 2018-10-12 | 2024-01-01 | Guangdong Oppo Mobile Telecommunications Corp Ltd | A method for encoding/decoding an image signal and a device for it |
CN110062227B (zh) * | 2019-03-12 | 2021-04-27 | 浙江大华技术股份有限公司 | 帧内预测模式的编解码方法、装置、设备和可读存储介质 |
KR20200113173A (ko) * | 2019-03-20 | 2020-10-06 | 현대자동차주식회사 | 예측모드 추정에 기반하는 인트라 예측장치 및 방법 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20070005848A (ko) * | 2005-07-06 | 2007-01-10 | 삼성전자주식회사 | 인트라 예측 모드 결정 방법 및 장치 |
JP2009246511A (ja) * | 2008-03-28 | 2009-10-22 | Canon Inc | 動画像符号化装置及びその制御方法、コンピュータプログラム |
KR20110019856A (ko) * | 2009-08-21 | 2011-03-02 | 에스케이 텔레콤주식회사 | 인트라 예측 부호화/복호화 방법 및 장치 |
Family Cites Families (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1167271C (zh) * | 2001-01-10 | 2004-09-15 | 华为技术有限公司 | 压缩编码图像传输中的误码处理方法 |
KR100798446B1 (ko) * | 2001-09-26 | 2008-01-28 | 에스케이 텔레콤주식회사 | 적응적 더블 스캔 방법 |
US7236524B2 (en) * | 2002-05-28 | 2007-06-26 | Sharp Laboratories Of America, Inc. | Methods and systems for image intra-prediction mode communication |
ES2788534T3 (es) * | 2002-05-28 | 2020-10-21 | Dolby Int Ab | Método y sistemas para la estimación, comunicación y organización de modos de intra-predicción de imágenes |
KR100750110B1 (ko) * | 2003-04-22 | 2007-08-17 | 삼성전자주식회사 | 4×4인트라 휘도 예측 모드 결정방법 및 장치 |
EP1558039A1 (en) * | 2004-01-21 | 2005-07-27 | Deutsche Thomson-Brandt Gmbh | Method and apparatus for generating/evaluating prediction information in picture signal encoding/decoding |
WO2006004331A1 (en) * | 2004-07-07 | 2006-01-12 | Samsung Electronics Co., Ltd. | Video encoding and decoding methods and video encoder and decoder |
CN100348051C (zh) * | 2005-03-31 | 2007-11-07 | 华中科技大学 | 一种增强型帧内预测模式编码方法 |
CN101133650B (zh) * | 2005-04-01 | 2010-05-19 | 松下电器产业株式会社 | 图像解码装置以及图像解码方法 |
CN101087427B (zh) * | 2006-06-06 | 2011-04-06 | 北京大学深圳研究生院 | 一种h.264标准的帧内预测模式选择方法 |
CN101622877A (zh) * | 2006-12-22 | 2010-01-06 | 高通股份有限公司 | 用于有效空间帧内可预测性确定(或评估)的***和方法 |
JP5437807B2 (ja) * | 2007-09-18 | 2014-03-12 | 富士通株式会社 | 動画像符号化装置および動画像復号装置 |
US20090161757A1 (en) * | 2007-12-21 | 2009-06-25 | General Instrument Corporation | Method and Apparatus for Selecting a Coding Mode for a Block |
JP5111127B2 (ja) * | 2008-01-22 | 2012-12-26 | キヤノン株式会社 | 動画像符号化装置及びその制御方法、並びに、コンピュータプログラム |
CN100596202C (zh) * | 2008-05-30 | 2010-03-24 | 四川虹微技术有限公司 | 一种快速帧内模式选择方法 |
JP5597968B2 (ja) * | 2009-07-01 | 2014-10-01 | ソニー株式会社 | 画像処理装置および方法、プログラム、並びに記録媒体 |
CN101621692B (zh) * | 2009-07-27 | 2011-04-20 | 宁波大学 | 一种基于预测模式的h.264/avc视频信息隐藏方法 |
KR101510108B1 (ko) * | 2009-08-17 | 2015-04-10 | 삼성전자주식회사 | 영상의 부호화 방법 및 장치, 그 복호화 방법 및 장치 |
EP2486731B1 (en) * | 2009-10-05 | 2018-11-07 | InterDigital Madison Patent Holdings | Methods and apparatus for adaptive filtering of prediction pixels for chroma components in video encoding and decoding |
KR20110113561A (ko) * | 2010-04-09 | 2011-10-17 | 한국전자통신연구원 | 적응적인 필터를 이용한 인트라 예측 부호화/복호화 방법 및 그 장치 |
KR101772459B1 (ko) * | 2010-05-17 | 2017-08-30 | 엘지전자 주식회사 | 신규한 인트라 예측 모드 |
CN107071426B (zh) * | 2010-08-17 | 2019-07-12 | M&K控股株式会社 | 用于编码帧内预测模式的方法 |
US9654785B2 (en) * | 2011-06-09 | 2017-05-16 | Qualcomm Incorporated | Enhanced intra-prediction mode signaling for video coding using neighboring mode |
CA2840587C (en) | 2011-06-28 | 2017-06-20 | Samsung Electronics Co., Ltd. | Method and apparatus for coding video and method and apparatus for decoding video, accompanied with intra prediction |
GB2494468B (en) * | 2011-09-12 | 2014-01-15 | Canon Kk | Method and device for encoding or decoding information representing prediction modes |
WO2013039676A1 (en) * | 2011-09-13 | 2013-03-21 | Mediatek Singapore Pte. Ltd. | Method and apparatus for intra mode coding in hevc |
CN107197310B (zh) | 2011-10-07 | 2020-02-21 | 英迪股份有限公司 | 对视频信号进行解码的方法 |
EP3780623A1 (en) | 2011-10-24 | 2021-02-17 | Innotive Ltd | Method and apparatus for image decoding |
CN104935943B (zh) | 2011-10-24 | 2018-05-25 | 英孚布瑞智有限私人贸易公司 | 对帧内预测模式进行解码的方法 |
KR20130049525A (ko) * | 2011-11-04 | 2013-05-14 | 오수미 | 잔차 블록 복원을 위한 역변환 방법 |
CN108174205A (zh) * | 2011-12-05 | 2018-06-15 | Lg 电子株式会社 | 帧内预测的方法和设备 |
-
2012
- 2012-04-20 CN CN201710339168.9A patent/CN107181942B/zh active Active
- 2012-04-20 KR KR1020120041299A patent/KR101947657B1/ko active IP Right Grant
- 2012-04-20 PL PL15001465T patent/PL2945376T3/pl unknown
- 2012-04-20 ES ES15001465T patent/ES2805038T3/es active Active
- 2012-04-20 HU HUE15001466A patent/HUE051688T2/hu unknown
- 2012-04-20 EP EP15001467.8A patent/EP2942956B1/en active Active
- 2012-04-20 PT PT150014686T patent/PT2942954T/pt unknown
- 2012-04-20 WO PCT/KR2012/003075 patent/WO2013062192A1/ko active Application Filing
- 2012-04-20 JP JP2014531702A patent/JP5728671B2/ja active Active
- 2012-04-20 LT LTEP15001468.6T patent/LT2942954T/lt unknown
- 2012-04-20 HU HUE15001465A patent/HUE051687T2/hu unknown
- 2012-04-20 PL PL15001467T patent/PL2942956T3/pl unknown
- 2012-04-20 EP EP15001465.2A patent/EP2945376B1/en active Active
- 2012-04-20 US US14/127,112 patent/US9025662B2/en active Active
- 2012-04-20 WO PCT/KR2012/003082 patent/WO2013062196A1/ko active Application Filing
- 2012-04-20 KR KR20120041316A patent/KR20130045153A/ko not_active Application Discontinuation
- 2012-04-20 EP EP12844183.9A patent/EP2797324A4/en not_active Ceased
- 2012-04-20 RS RS20200987A patent/RS60704B1/sr unknown
- 2012-04-20 EP EP21178975.5A patent/EP3917147A1/en active Pending
- 2012-04-20 CN CN201510300377.3A patent/CN104935930B/zh active Active
- 2012-04-20 CN CN201510300414.0A patent/CN104883571B/zh active Active
- 2012-04-20 SI SI201231799T patent/SI2942954T1/sl unknown
- 2012-04-20 CN CN201710340817.7A patent/CN107277503B/zh active Active
- 2012-04-20 ES ES15001466T patent/ES2805039T3/es active Active
- 2012-04-20 HU HUE15001467A patent/HUE051689T2/hu unknown
- 2012-04-20 CN CN201510300375.4A patent/CN104935929B/zh active Active
- 2012-04-20 ES ES15001467T patent/ES2805055T3/es active Active
- 2012-04-20 MX MX2014003543A patent/MX2014003543A/es unknown
- 2012-04-20 CN CN201510300441.8A patent/CN104935932B/zh active Active
- 2012-04-20 CN CN201280047214.3A patent/CN103931180B/zh active Active
- 2012-04-20 CN CN201510300394.7A patent/CN104935931B/zh active Active
- 2012-04-20 CN CN201510300378.8A patent/CN104883570B/zh active Active
- 2012-04-20 EP EP15001466.0A patent/EP2945381B1/en active Active
- 2012-04-20 US US14/124,625 patent/US8953683B2/en active Active
- 2012-04-20 EP EP15001468.6A patent/EP2942954B1/en active Active
- 2012-04-20 HU HUE15001468A patent/HUE051695T2/hu unknown
- 2012-04-20 PL PL15001466T patent/PL2945381T3/pl unknown
- 2012-04-20 PL PL15001468T patent/PL2942954T3/pl unknown
- 2012-04-20 ES ES15001468T patent/ES2805041T3/es active Active
- 2012-04-20 DK DK15001468.6T patent/DK2942954T3/da active
-
2014
- 2014-12-29 US US14/585,132 patent/US9148671B2/en active Active
- 2014-12-29 US US14/585,108 patent/US9025663B1/en active Active
- 2014-12-29 US US14/585,127 patent/US9060179B2/en active Active
-
2015
- 2015-02-10 JP JP2015024133A patent/JP5905613B2/ja active Active
- 2015-04-02 JP JP2015076029A patent/JP6047616B2/ja active Active
- 2015-04-02 US US14/677,736 patent/US9615105B2/en active Active
- 2015-04-02 JP JP2015076028A patent/JP6047615B2/ja active Active
- 2015-04-02 JP JP2015076027A patent/JP6047614B2/ja active Active
-
2016
- 2016-02-20 HK HK16101911.6A patent/HK1214053A1/zh not_active IP Right Cessation
- 2016-03-01 HK HK16102358.4A patent/HK1214704A1/zh unknown
- 2016-03-01 HK HK16102361.9A patent/HK1214705A1/zh unknown
- 2016-03-10 HK HK16102790.0A patent/HK1214901A1/zh unknown
- 2016-03-10 HK HK16102781.1A patent/HK1214900A1/zh unknown
- 2016-03-10 HK HK16102774.0A patent/HK1214899A1/zh unknown
-
2019
- 2019-01-14 KR KR1020190004895A patent/KR102398643B1/ko active IP Right Grant
- 2019-01-14 KR KR1020190004894A patent/KR102393177B1/ko active IP Right Grant
- 2019-01-14 KR KR1020190004896A patent/KR102398644B1/ko active IP Right Grant
- 2019-01-14 KR KR1020190004893A patent/KR102398642B1/ko active IP Right Grant
-
2020
- 2020-06-29 CY CY20201100599T patent/CY1123086T1/el unknown
- 2020-08-25 HR HRP20201328TT patent/HRP20201328T1/hr unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20070005848A (ko) * | 2005-07-06 | 2007-01-10 | 삼성전자주식회사 | 인트라 예측 모드 결정 방법 및 장치 |
JP2009246511A (ja) * | 2008-03-28 | 2009-10-22 | Canon Inc | 動画像符号化装置及びその制御方法、コンピュータプログラム |
KR20110019856A (ko) * | 2009-08-21 | 2011-03-02 | 에스케이 텔레콤주식회사 | 인트라 예측 부호화/복호화 방법 및 장치 |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015507903A (ja) * | 2012-01-20 | 2015-03-12 | パンテック カンパニー リミテッド | 画面内予測方法及び画像復号化装置 |
US20160127744A1 (en) | 2012-01-20 | 2016-05-05 | Sony Corporation | Logical intra mode naming in hevc video coding |
JP2017011765A (ja) * | 2012-01-20 | 2017-01-12 | ソニー株式会社 | Hevcビデオ符号化における論理的イントラモードネーミング |
US9554130B2 (en) | 2012-01-20 | 2017-01-24 | Pantech Inc. | Intra prediction mode mapping method and device using the method |
JP2017038382A (ja) * | 2012-01-20 | 2017-02-16 | パンテック カンパニー リミテッド | 画面内予測方法及び画像復号化装置 |
US9854239B2 (en) | 2012-01-20 | 2017-12-26 | Intellectual Discovery Co., Ltd. | Intra prediction mode mapping method and device using the method |
JP2018026870A (ja) * | 2012-01-20 | 2018-02-15 | ソニー株式会社 | Hevcビデオ符号化における論理的イントラモードネーミング |
US9986238B2 (en) | 2012-01-20 | 2018-05-29 | Intellectual Discovery Co., Ltd. | Intra prediction mode mapping method and device using the method |
JP2018152863A (ja) * | 2012-01-20 | 2018-09-27 | インテレクチュアル ディスカバリー カンパニー リミテッド | 画面内予測方法及び画像復号化装置 |
US10148980B2 (en) | 2012-01-20 | 2018-12-04 | Sony Corporation | Logical intra mode naming in HEVC video coding |
US10158852B2 (en) | 2012-01-20 | 2018-12-18 | Intellectual Discovery Co., Ltd. | Intra prediction mode mapping method and device using the method |
JP2019071652A (ja) * | 2012-01-20 | 2019-05-09 | ソニー株式会社 | Hevcビデオ符号化における論理的イントラモードネーミング |
US10567795B2 (en) | 2012-01-20 | 2020-02-18 | Sony Corporation | Logical intra mode naming in HEVC video coding |
US10616575B2 (en) | 2012-01-20 | 2020-04-07 | Intellectual Discovery Co., Ltd. | Intra prediction mode mapping method and device using the method |
US10623772B2 (en) | 2012-01-20 | 2020-04-14 | Sony Corporation | Logical intra mode naming in HEVC video coding |
JP2020102870A (ja) * | 2012-01-20 | 2020-07-02 | ソニー株式会社 | Hevcビデオ符号化における論理的イントラモードネーミング |
US10863173B2 (en) | 2012-01-20 | 2020-12-08 | Dolby Laboratories Licensing Corporation | Intra prediction mode mapping method and device using the method |
US11012712B2 (en) | 2012-01-20 | 2021-05-18 | Sony Corporation | Logical intra mode naming in HEVC video coding |
JP2021078149A (ja) * | 2012-01-20 | 2021-05-20 | ソニーグループ株式会社 | Hevcビデオ符号化における論理的イントラモードネーミング |
JP7024897B2 (ja) | 2012-01-20 | 2022-02-24 | ソニーグループ株式会社 | Hevcビデオ符号化における論理的イントラモードネーミング |
US11412255B2 (en) | 2012-01-20 | 2022-08-09 | Sony Corporation | Logical intra mode naming in HEVC video coding |
Also Published As
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2013062196A1 (ko) | 영상 복호화 장치 | |
WO2013062191A1 (ko) | 인트라 예측 모드에서의 영상 부호화 방법 및 장치 | |
WO2013062193A1 (ko) | 영상 복호화 방법 및 장치 | |
WO2013062198A1 (ko) | 영상 복호화 장치 | |
WO2011133002A2 (ko) | 영상 부호화 장치 및 방법 | |
WO2012018198A2 (ko) | 예측 블록 생성 장치 | |
WO2012134085A2 (ko) | 인트라 예측 모드에서의 영상 복호화 방법 | |
WO2012018197A2 (ko) | 인트라 예측 복호화 장치 | |
WO2013062194A1 (ko) | 복원 블록을 생성하는 방법 및 장치 | |
WO2012057528A2 (ko) | 적응적 화면내 예측 부호화 및 복호화 방법 | |
WO2009113791A2 (ko) | 영상 부호화장치 및 영상 복호화장치 | |
WO2013002549A2 (ko) | 영상 부호화/복호화 방법 및 장치 | |
WO2009157665A2 (ko) | 블록 변환을 이용한 인트라 예측 방법 및 장치와 그를 이용한 영상 부호화/복호화 방법 및 장치 | |
WO2012093854A2 (ko) | 코딩 유닛 단위 병렬 인트라예측을 이용한 부호화/복호화 방법 및 장치 | |
WO2011068332A2 (ko) | 공간적 예측장치 및 그 예측방법, 그것을 이용한 영상 부호화 장치 및 방법, 및 영상 복호화 장치 및 방법 | |
WO2010147429A2 (ko) | 의사 난수 필터를 이용한 영상 필터링 방법 및 장치 | |
WO2011078562A2 (ko) | 인트라 예측 부호화 방법 및 부호화 방법, 그리고 상기 방법을 수행하는 인트라 예측 부호화 장치 및 인트라 예측 복호화 장치 | |
WO2018074617A1 (ko) | 화면 내 예측에 대한 참조 모드 리스트를 사용하는 비디오 코딩 방법 및 장치 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 12844183 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14127112 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 2014531702 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: MX/A/2014/003543 Country of ref document: MX |
|
NENP | Non-entry into the national phase |
Ref country code: DE |