WO2012081877A2 - 다시점 비디오 부호화/복호화 장치 및 방법 - Google Patents
다시점 비디오 부호화/복호화 장치 및 방법 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
- H04N19/103—Selection of coding mode or of prediction mode
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
- H04N13/106—Processing image signals
- H04N13/161—Encoding, multiplexing or demultiplexing different image signal components
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
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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
- H04N19/132—Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
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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
- H04N19/134—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
- H04N19/146—Data rate or code amount at the encoder output
- H04N19/147—Data rate or code amount at the encoder output according to rate distortion criteria
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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
- H04N19/169—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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- 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
- H04N19/597—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding specially adapted for multi-view video sequence encoding
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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
- H04N19/60—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
- Embodiments of the present invention relate to an apparatus and method for multiview video encoding / decoding, wherein an input image is encoded / decoded according to a skip mode using a frame at the same view or a skip mode using a frame at different views with respect to a current block.
- An apparatus and method are provided.
- the stereoscopic image refers to a 3D image that simultaneously provides depth and space information. Unlike stereo images, which provide images of different viewpoints to the left and right eyes, stereoscopic images provide different images according to the viewer's viewpoint. As a result, the stereoscopic image is composed of a plurality of images taken from the observer's point of view.
- Images taken from a plurality of viewpoints have a large amount of data.
- images captured from a plurality of viewpoints are encoded by a single-view video encoding method such as MPEG-2, H.264 / AVC, and HEVC, it is impossible to realize network infrastructure and terrestrial bandwidth.
- a multi-view video encoding apparatus includes an encoding mode determiner configured to determine whether to encode a current block included in a frame of a first view into a skip mode using a frame of a second view; And a bitstream generator configured to generate a bitstream by encoding an index indicating the skip mode when the current block is encoded according to a skip mode.
- a multi-view video encoding apparatus encodes a current block included in a frame of a first view in a first skip mode using a frame of a first view or a second using a frame of a second view.
- An encoding mode determiner which determines whether to encode in a skip mode;
- a bitstream generator configured to generate a bitstream by encoding an index indicating a skip mode determined for the current block.
- a multi-view video decoding apparatus includes an index decoder which decodes an encoded index indicating a skip mode of a current block included in a frame of a first view; And a block reconstruction unit which extracts the prediction block of the current block from the frame at the second time point and restores the current block according to the skip mode of the current block.
- the multi-view video decoding apparatus is an index decoder for decoding a coded index indicating whether a current block included in a frame of a first view is encoded in a first skip mode or a second skip mode. ; And a block reconstruction unit reconstructing the current block based on the skip mode of the current block determined according to the decoded index, wherein the first skip mode determines a prediction block of the current block in a frame at a first time point, The second skip mode may determine the prediction block of the current block in the frame of the second view.
- a multi-view video encoding method includes determining whether to encode a current block included in a frame of a first view in a skip mode using a frame of a second view; And when the current block is encoded according to a skip mode, generating a bitstream by encoding an index representing the skip mode.
- a multi-view video encoding method encodes a current block included in a frame of a first view in a first skip mode using a frame of a first view or a second using a frame of a second view. Determining whether to encode in a skip mode; And generating a bitstream by encoding an index indicating a skip mode determined for the current block.
- a multi-view video decoding method includes decoding a coded index indicating a skip mode of a current block included in a frame of a first view; The method may include reconstructing the current block by extracting a prediction block of the current block from a frame at a second view according to the skip mode of the current block.
- a multi-view video decoding method includes decoding a coded index indicating whether a current block included in a frame of a first view is encoded in a first skip mode or a second skip mode; And restoring a current block based on a skip mode of the current block determined according to the decoded index, wherein the first skip mode determines a prediction block of the current block in a frame at a first time point,
- the two skip modes may determine the prediction block of the current block in the frame of the second view.
- the coding efficiency according to the expansion of the skip mode may be improved.
- FIG. 1 is a diagram for describing an operation of a multiview video encoding apparatus and a multiview video encoding apparatus according to an embodiment of the present invention.
- FIG. 2 is a block diagram illustrating a detailed configuration of a multiview video encoding apparatus according to an embodiment of the present invention.
- FIG. 3 is a block diagram showing a detailed configuration of a multi-view video decoding apparatus according to an embodiment of the present invention.
- FIG. 4 is a diagram illustrating a structure of a multiview video according to an embodiment of the present invention.
- FIG. 5 is a diagram illustrating an example of a frame used to encode a current block according to an embodiment of the present invention.
- FIG. 6 is a diagram for explaining a skip mode when encoding a current block according to an embodiment of the present invention.
- FIG. 7 is a flowchart illustrating a multiview video encoding method according to a first embodiment of the present invention.
- FIG. 8 is a flowchart illustrating a multiview video encoding method according to a second embodiment of the present invention.
- FIG. 9 is a flowchart illustrating a multiview video decoding method according to a first embodiment of the present invention.
- FIG. 10 is a flowchart illustrating a multiview video decoding method according to a second embodiment of the present invention.
- FIG. 1 is a diagram for describing an operation of a multiview video encoding apparatus and a multiview video encoding apparatus according to an embodiment of the present invention.
- the multi-view video encoding apparatus 101 may effectively encode an image in consideration of redundancy between images photographed at a plurality of viewpoints.
- the multiview video encoding apparatus 101 may encode the multiview video encoding method.
- the multi-view video encoding method may encode an image in various encoding modes.
- the skip mode transmits only the index 1 bit indicating the skip mode to the multi-view video decoding apparatus 102 without encoding the blocks constituting the image.
- the encoding efficiency may be improved as the current block having the encoding mode is the skip mode when the image is encoded.
- the direct mode is often distinguished from the skip mode according to whether a residual signal is encoded for the corresponding block, the skip mode in the present invention will be described including the direct mode.
- the multi-view video encoding apparatus 101 may divide a skip mode into a first skip mode or a second skip mode.
- the first skip mode is a method of encoding the current block by using a frame having the same time point as the frame of the current block to be encoded but having a different time.
- the second skip mode is a method of encoding a current block using a frame that is different from a frame of a current block to be encoded, but having a time.
- the first skip mode may be defined as an inter skip mode
- the second skip mode may be defined as an inter view skip mode.
- Embodiments of the present invention include all skip modes that perform the same operation without being limited to the above-described definition.
- the frame mentioned in the embodiment of the present invention may be referred to as a reference image.
- more current blocks may be encoded in a skip mode by considering not only a frame at the same time but also a frame at another time.
- the multi-view video encoding apparatus 101 may encode the current block using the second skip mode.
- the multi-view video encoding apparatus 101 determines whether it is more efficient to encode the current block in a first skip mode or a second skip mode, and then determine the skip mode determined. May be transmitted to the multi-view video decoding apparatus 102. Then, the multi-view video decoding apparatus 102 may decode the current block according to the transmitted skip mode.
- FIG. 2 is a block diagram illustrating a detailed configuration of a multiview video encoding apparatus according to an embodiment of the present invention.
- the multiview video encoding apparatus 101 may include an encoding mode determiner and a bitstream generator 202.
- the multi-view video encoding apparatus 101 may encode the current block according to an inter mode or an intra mode such as inter2Nx2N, inter2NxN, interNx2N, interNxN, intra2Nx2N, intraNxN, or the like.
- the encoding according to the mode will be mainly described.
- the currently defined encoding mode is not limited thereto, and another encoding mode may be added.
- the encoding mode determiner 201 may determine whether to encode the current block included in the frame of the first view in the skip mode using the frame of the second view. That is, the multi-view video encoding apparatus 101 may determine whether to encode the current block according to the interview skip mode. Otherwise, the encoding mode determiner 201 may encode the current block included in the frame of the first view in an inter mode or an intra mode using the residual signal of the current block.
- the multi-view video decoding apparatus 102 may determine a neighboring block that refers to the frame of the second view among the neighboring blocks adjacent to the current block included in the frame of the first view.
- the disparity vector may be used to determine the predictive disparity vector of the current block.
- the prediction disparity vector may be derived by applying a median filter to the disparity vector of each of the at least one neighboring block. Then, the multi-view video decoding apparatus 102 may reconstruct the current block by extracting the prediction block of the current block from the frame of the second view by using the prediction disparity vector and compensating the current block with the prediction block.
- the multi-view video decoding apparatus 102 when the current block is encoded according to the skip mode, the multi-view video decoding apparatus 102 is the same position as the current block in a frame corresponding to a different time than the frame including the current block among the frames of the first view.
- the predicted disparity vector of the current block may be determined using the disparity vector of the target block corresponding to.
- the multi-view video decoding apparatus 102 may reconstruct the current block by extracting the prediction block of the current block from the frame of the first view by using the prediction disparity vector and compensating the current block with the prediction block.
- the multi-view video decoding apparatus 102 may be adjacent to the current block at a frame corresponding to a different time than the frame including the current block among the frames of the first view.
- the prediction disparity vector of the current block may be determined using the disparity vector of the target block corresponding to the same position as the neighboring blocks. Then, the multi-view video decoding apparatus 102 may reconstruct the current block by extracting the prediction block of the current block from the frame of the first view by using the prediction disparity vector and compensating the current block with the prediction block.
- the bit stream generator 202 encodes an index indicating the skip mode to encode the bit stream. Can be generated. For example, since the index may be set to 1 when encoded according to the skip mode, and may be set to 0 unless encoded according to the skip mode, only 1 bit is required when encoding the index.
- the skip mode since the skip mode does not transmit a residual signal between the current block and the prediction block of the current block, only the index related to the skip mode may be included in the bitstream.
- the neighboring blocks adjacent to the current block may include at least one of a block adjacent to the left side of the current block, a block adjacent to the upper side of the current block, and a block adjacent to the upper left side of the current block.
- the encoding mode determiner 201 encodes a current block included in a frame of a first view in a first skip mode using a frame of a first view or using a frame of a second view. Whether or not to encode in 2 skip modes may be determined. For example, the encoding mode determiner 201 may determine a skip mode having a small cost function among the cost functions of the encoding result according to the first skip mode and the second skip mode as the encoding mode for encoding the current block.
- the first skip mode determines the predicted motion vector of the current block by using the motion vector of the neighboring block referring to the frame of the first view indicating a different time than the frame including the current block among the neighboring blocks adjacent to the current block.
- an encoding mode for reconstructing the current block by using the predictive motion vector Since the second skip mode has been described in detail in the first embodiment, it will be omitted here.
- the bitstream generator 202 may generate a bitstream by encoding an index indicating a skip mode determined for the current block.
- FIG. 3 is a block diagram showing a detailed configuration of a multi-view video decoding apparatus according to an embodiment of the present invention.
- the multi-view video decoding apparatus 101 may include an index decoder 301 and a block reconstruction unit 302.
- the multi-view video decoding apparatus 102 according to two embodiments will be described.
- the index decoder 301 may decode the encoded index indicating the skip mode of the current block included in the frame of the first view.
- the encoded index may be transmitted through a bitstream generated by the multiview video encoding apparatus 101 and then derived from the bitstream through a demultiplexing process.
- the block reconstruction unit 302 may reconstruct the current block by extracting the prediction block of the current block from the frame at the second time point according to the skip mode of the current block. For example, the block reconstruction unit 302 may determine the prediction disparity vector of the current block by using the disparity vector of the neighboring block referring to the frame of the second view among the neighboring blocks adjacent to the current block. The block reconstruction unit 302 may determine the prediction block of the current block in the frame of the second view by using the prediction disparity vector. Then, the block reconstruction unit 302 may reconstruct the current block by compensating the current block by using the prediction block.
- the block reconstruction unit 302 may perform a disparity vector of a target block corresponding to the same position as neighboring blocks adjacent to the current block in a frame corresponding to a different time than the frame including the current block among the frames of the first view. May be used to determine the predictive disparity vector of the current block.
- the block reconstruction unit 302 may determine the prediction block of the current block in the frame of the second view by using the prediction disparity vector.
- the index decoder 301 may decode the encoded index indicating whether the current block included in the frame at the first time point is encoded in the first skip mode or the second skip mode.
- the first skip mode is an encoding mode for determining a prediction block of the current block in a frame of the first view that is the same view as the frame including the current block.
- the second skip mode is an encoding mode for determining a prediction block of the current block in a frame at a second view that is different from the frame including the current block.
- the block reconstruction unit 302 may refer to a frame of a first view indicating a time different from a frame including the current block among neighboring blocks adjacent to the current block.
- the predicted motion vector of the current block may be determined using the motion vector of the neighboring block.
- the block reconstruction unit 302 may reconstruct the current block by determining the prediction block of the current block in the frame of the first view by using the prediction motion vector and compensating the current block by using the prediction block.
- the block reconstruction unit 302 uses the disparity vector of the neighboring block referring to the frame of the second view among the neighboring blocks adjacent to the current block to determine the current block.
- the prediction disparity vector can be determined.
- the block reconstruction unit 302 may reconstruct the current block by determining the prediction block of the current block by using the prediction disparity vector and compensating the current block by using the prediction block.
- the block reconstructor 302 may perform a frame of a first view indicating a different time from a frame including the current block among the frames of the first view.
- a prediction disparity vector of the current block may be determined using the disparity vector of the target block corresponding to the same position as the current block.
- the block reconstruction unit 302 may reconstruct the current block by determining the prediction block of the current block by using the prediction disparity vector and compensating the current block by using the prediction block.
- FIG. 4 is a diagram illustrating a structure of a multiview video according to an embodiment of the present invention.
- a multi-view video encoding method of encoding GOP (Group of Picture) '8' is shown.
- a hierarchical B picture is basically applied to a temporal axis and a view axis, thereby reducing redundancy between images.
- a left picture is first encoded, and then a right picture and a center picture are sequentially encoded.
- the left image may be encoded in such a manner that temporal redundancy is removed by searching for similar regions from previous images through motion estimation.
- the right image since the right image is encoded by using the previously encoded left image as a reference image, the right image may be encoded in such a manner that temporal redundancy based on motion estimation and view redundancy based on disparity estimation are removed. have.
- an image encoded without using a reference image of another view may be encoded by predicting and encoding a reference image of another view in one direction, such as an I-View and a right image.
- An image that is predicted and encoded in both directions, such as a P-View and a center image, is defined as a B-View.
- FIG. 5 is a diagram illustrating an example of a frame used to encode a current block according to an embodiment of the present invention.
- the multi-view video encoding method searches a prediction block most similar to the current block among neighboring images adjacent to the current image 501 including the current block, and then calculates a residual value between the current block and the prediction block.
- the skip mode among the various encoding modes has high encoding efficiency since the encoding information of the current block is not transmitted to the multi-view video decoding apparatus 102.
- the skip mode according to an embodiment of the present invention is the same as the first skip mode using the frame 1 502 and the frame 2 503 at the same time or different time with respect to the current frame 501 including the current block. It may be divided into a second skip mode using the frame 3 504 and the frame 4 504 which are different time points or the same time.
- the multi-view video encoding apparatus 101 may encode the current block in the first skip mode.
- the multiview video encoding apparatus 101 may encode the current block in the second skip mode.
- the multiview video encoding apparatus 101 may encode the current block according to a skip mode having excellent encoding performance among the first skip mode and the second skip mode.
- the multi-view video encoding apparatus 101 may determine a coding performance by calculating a cost function with respect to a result of encoding according to the first skip mode and the second skip mode.
- the cost function may be calculated by Rate-Distortion according to Equation (1).
- the sum of square difference is a value obtained by squaring the difference between the current block S and the prediction block r
- ⁇ is a Lagrangian coefficient
- R means the number of bits required when encoding in the first skip mode or the second skip mode.
- the multiview video decoding apparatus 102 is based on a motion vector (MV) of neighboring blocks using a frame of the same view among neighboring blocks adjacent to the current block.
- the prediction motion vector (PMV) of the current block may be determined.
- the multi-view video decoding apparatus 102 may determine the predicted motion vector by using a median filter on the motion vectors of the neighboring blocks. Thereafter, the multi-view video decoding apparatus 102 may determine the prediction block of the current block at the same frame as the frame including the current block to reconstruct the current block based on the prediction motion vector.
- the multiview video decoding apparatus 102 is based on a disparity vector (DV) of neighboring blocks using a frame of another viewpoint among neighboring blocks adjacent to the current block.
- the prediction disparity vector (PDV) of the current block may be determined.
- the multi-view video decoding apparatus 102 may extract the predictive disparity vector by using a median filter on the disparity vector of the neighboring blocks.
- the multiview video encoding apparatus 101 may determine the prediction block of the current block in a frame different from the frame including the current block to reconstruct the current block based on the prediction disparity vector.
- the multi-view video decoding apparatus 101 may reconstruct the current block based on the prediction block derived according to the first skip mode or the prediction block derived according to the second skip mode.
- FIG. 6 is a diagram for explaining a skip mode when encoding a current block according to an embodiment of the present invention.
- Two skip modes may be applied to encode the current block included in the frame 601.
- a first skip mode is performed in which a prediction block is extracted from a frame 603 at the same time as the frame 601 to compensate for the current block.
- the second skip mode compensates the current block by extracting the prediction block from the frame 602 at a different time point than the frame 601.
- the first skip mode generates a predictive motion vector by applying a median filter to the motion vectors of the neighboring blocks b1 to b5 of the current block, and determines the predictive block in the frame 603 using the predictive motion vector. That's the way it is.
- the second skip mode generates a predictive disparity vector by applying a median filter to the disparity vectors of neighboring blocks b1 to b5 adjacent to the current block, and determines the predictive block in the frame 602 using the predictive disparity vector. That's the way it is.
- the second skip mode generates a prediction disparity vector using the disparity vector of the target block of the frame 603 at the same position as the current block, and determines the prediction block in the frame 602 using the prediction disparity vector. That's the way.
- the second skip mode generates a predictive disparity vector by applying a median filter to the disparity vector of the neighboring block adjacent to the target block of the frame 603 located at the same position as the current block, and generates a frame using the predictive disparity vector In 602, a prediction block is determined.
- the highest priority may be given to the disparity vector indicating the prediction block most similar to the current block among the predicted disparity vectors.
- FIG. 7 is a flowchart illustrating a multiview video encoding method according to a first embodiment of the present invention.
- the multiview video encoding apparatus 101 may determine whether to encode a current block included in a frame of a first view in a skip mode using a frame of a second view.
- a prediction disparity vector of the current block is determined using the disparity vector of the neighboring block referring to the frame of the second view among neighboring blocks adjacent to the current block, and the current block is reconstructed using the predictive disparity vector.
- the skip mode may determine the prediction disparity vector of the current block by using the disparity vector of the target block corresponding to the same position as the current block in a frame that is different from the frame including the current block among the frames of the first view.
- a coding mode for reconstructing the current block by using the prediction disparity vector may be determined by using the prediction disparity vector.
- the skip mode may be performed by using the disparity vector of the target block corresponding to the same position as the neighboring blocks adjacent to the current block in a frame at a different time than the frame including the current block among the frames of the first view.
- a coding mode for determining a prediction disparity vector and reconstructing a current block by using the prediction disparity vector may be performed by using the disparity vector of the target block corresponding to the same position as the neighboring blocks adjacent to the current block in a frame at a different time than the frame including the current block among the frames of the first view.
- the multiview video encoding apparatus 101 may generate a bitstream by encoding an index indicating a skip mode.
- FIG. 8 is a flowchart illustrating a multiview video encoding method according to a second embodiment of the present invention.
- the multi-view video encoding apparatus 101 encodes the current block included in the frame of the first view in a first skip mode using the frame of the first view or uses the frame of the second view. Whether or not to encode in 2 skip modes may be determined. For example, the multi-view video encoding apparatus 101 may determine a skip mode having a small cost function among the cost functions of the result of encoding the first skip mode and the second skip mode as the encoding mode for encoding the current block. .
- the predicted motion vector of the current block is obtained by using the motion vector of the neighboring block that refers to the frame of the first view indicating a different time than the frame including the current block among the neighboring blocks adjacent to the current block. It means the encoding mode that determines and reconstructs the current block by using the predicted motion vector.
- the second skip mode determines a prediction disparity vector of the current block by using the disparity vector of the neighboring block referring to the frame of the second view among neighboring blocks adjacent to the current block, and uses the prediction disparity vector to determine the current block. It means the reconstruction mode.
- the second skip mode uses the disparity vector of the target block corresponding to the same position as the current block in the frame of the first view indicating a different time than the frame including the current block among the frames of the first view.
- a coding mode for determining a prediction disparity vector and reconstructing a current block by using the prediction disparity vector uses the prediction disparity vector.
- the multiview video encoding apparatus 101 may generate a bitstream by encoding an index indicating a skip mode determined for the current block.
- FIG. 9 is a flowchart illustrating a multiview video decoding method according to a first embodiment of the present invention.
- the multiview video decoding apparatus 102 may decode an encoded index indicating a skip mode of a current block included in a frame of a first view.
- the skip mode mentioned in FIG. 9 has already been described in detail with reference to FIG. 7.
- the multiview video decoding apparatus 103 may reconstruct a current block by extracting a prediction block of a current block from a frame of a second view according to a skip mode of the current block.
- FIG. 10 is a flowchart illustrating a multiview video decoding method according to a second embodiment of the present invention.
- the multiview video decoding apparatus 102 may decode an encoded index indicating whether a current block included in a frame of a first view is encoded in a first skip mode or a second skip mode. .
- the skip mode mentioned in FIG. 10 has already been described in detail with reference to FIG. 8.
- the multiview video decoding apparatus 102 may reconstruct the current block based on the skip mode of the current block determined according to the decoded index.
- Methods according to an embodiment of the present invention can be implemented in the form of program instructions that can be executed by various computer means and recorded in a computer readable medium.
- the computer readable medium may include program instructions, data files, data structures, etc. alone or in combination.
- Program instructions recorded on the media may be those specially designed and constructed for the purposes of the present invention, or they may be of the kind well-known and available to those having skill in the computer software arts.
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Claims (24)
- 제1 시점의 프레임에 포함된 현재 블록을 제2 시점의 프레임을 이용하는 스킵 모드로 부호화할 지 여부를 결정하는 부호화 모드 결정부;상기 현재 블록을 스킵 모드에 따라 부호화하는 경우, 상기 스킵 모드를 나타내는 인덱스를 부호화하여 비트스트림을 생성하는 비트스트림 생성부를 포함하는 다시점 비디오 부호화 장치.
- 제1항에 있어서,상기 스킵 모드는,상기 현재 블록에 인접한 주변 블록들 중 제2 시점의 프레임을 참조하는 주변 블록의 변이 벡터를 이용하여 상기 현재 블록의 예측 변이 벡터를 결정하고, 상기 예측 변이 벡터를 이용하여 상기 현재 블록을 복원하는 부호화 모드인 것을 특징으로 하는 다시점 비디오 부호화 장치.
- 제1항에 있어서,상기 스킵 모드는,상기 제1 시점의 프레임들 중 상기 현재 블록이 포함된 프레임과 다른 시간에 해당하는 프레임에서 상기 현재 블록과 동일한 위치에 대응하는 타겟 블록의 변이 벡터를 이용하여 상기 현재 블록의 예측 변이 벡터를 결정하고, 상기 예측 변이 벡터를 이용하여 상기 현재 블록을 복원하는 부호화 모드인 것을 특징으로 하는 것을 특징으로 하는 다시점 비디오 부호화 장치.
- 제1항에 있어서,상기 스킵 모드는,상기 제1 시점의 프레임들 중 상기 현재 블록이 포함된 프레임과 다른 시간에 해당하는 프레임에서 상기 현재 블록에 인접한 주변 블록들과 동일한 위치에 대응하는 타겟 블록의 변이 벡터를 이용하여 상기 현재 블록의 예측 변이 벡터를 결정하고, 상기 예측 변이 벡터를 이용하여 상기 현재 블록을 복원하는 부호화 모드인 것을 특징으로 하는 것을 특징으로 하는 다시점 비디오 부호화 장치.
- 제1항에 있어서,상기 비트스트림 생성부는,상기 현재 블록이 P-프레임에 포함되는 경우, 상기 현재 블록과 관련된 스킵 모드(SKIP Mode)를 나타내는 인덱스를 부호화하고,상기 현재 블록이 B-프레임에 포함되는 경우, 상기 현재 블록과 관련된 다이렉트 모드에 포함된 다이렉트 스킵 모드(Direct SKIP Mode)를 나타내는 인덱스를 부호화하는 것을 특징으로 하는 다시점 비디오 부호화 장치.
- 제1항에 있어서,상기 현재 블록에 인접한 주변 블록들은,상기 현재 블록의 좌측에 인접한 블록, 상기 현재 블록의 상측에 인접한 블록, 상기 현재 블록의 좌측 상단에 인접한 블록 중 적어도 하나를 포함하는 것을 특징으로 하는 다시점 비디오 부호화 장치.
- 제1 시점의 프레임에 포함된 현재 블록을 제1 시점의 프레임을 이용하는 제1 스킵 모드로 부호화할 지 또는 제2 시점의 프레임을 이용하는 제2 스킵 모드로 부호화할 지 여부를 결정하는 부호화 모드 결정부; 및상기 현재 블록에 대해 결정된 스킵 모드를 나타내는 인덱스를 부호화하여 비트스트림을 생성하는 비트스트림 생성부를 포함하는 다시점 비디오 부호화 장치.
- 제7항에 있어서,상기 제1 스킵 모드는,상기 현재 블록에 인접한 주변 블록들 중 상기 현재 블록이 포함된 프레임과 다른 시간을 나타내는 제1 시점의 프레임을 참조하는 주변 블록의 움직임 벡터를 이용하여 상기 현재 블록의 예측 움직임 벡터를 결정하고, 상기 예측 움직임 벡터를 이용하여 상기 현재 블록을 복원하는 부호화 모드인 것을 특징으로 하는 다시점 비디오 부호화 장치.
- 제7항에 있어서,상기 제2 스킵 모드는,상기 현재 블록에 인접한 주변 블록들 중 제2 시점의 프레임을 참조하는 주변 블록의 변이 벡터를 이용하여 상기 현재 블록의 예측 변이 벡터를 결정하고, 상기 예측 변이 벡터를 이용하여 상기 현재 블록을 복원하는 부호화 모드인 것을 특징으로 하는 다시점 비디오 부호화 장치.
- 제8항에 있어서,상기 제2 스킵 모드는,상기 제1 시점의 프레임들 중 상기 현재 블록이 포함된 프레임과 다른 시간을 나타내는 제1 시점의 프레임에서 상기 현재 블록과 동일한 위치에 대응하는 타겟 블록의 변이 벡터를 이용하여 상기 현재 블록의 예측 변이 벡터를 결정하고, 상기 예측 변이 벡터를 이용하여 상기 현재 블록을 복원하는 부호화 모드인 것을 특징으로 하는 것을 특징으로 하는 다시점 비디오 부호화 장치.
- 제8항에 있어서,상기 부호화 모드 결정부는,상기 제1 스킵 모드와 제2 스킵 모드에 따라 부호화한 결과의 비용 함수 중 작은 비용 함수를 가지는 스킵 모드를 현재 블록을 부호화하기 위한 부호화 모드로 결정하는 것을 특징으로 하는 다시점 비디오 부호화 장치.
- 제1 시점의 프레임에 포함된 현재 블록의 스킵 모드를 나타내는 부호화된 인덱스를 복호화하는 인덱스 복호화부;상기 현재 블록의 스킵 모드에 따라 제2 시점의 프레임에서 현재 블록의 예측 블록을 추출하여 상기 현재 블록을 복원하는 블록 복원부를 포함하는 다시점 비디오 복호화 장치.
- 제12항에 있어서,상기 블록 복원부는,상기 현재 블록에 인접한 주변 블록들 중 제2 시점의 프레임을 참조하는 주변 블록의 변이 벡터를 이용하여 상기 현재 블록의 예측 변이 벡터를 결정하고, 상기 예측 변이 벡터를 이용하여 현재 블록의 예측 블록을 결정하는 것을 특징으로 하는 다시점 비디오 복호화 장치.
- 제12항에 있어서,상기 블록 복원부는,상기 제1 시점의 프레임들 중 상기 현재 블록이 포함된 프레임과 다른 시간에 해당하는 프레임에서 상기 현재 블록에 인접한 주변 블록들과 동일한 위치에 대응하는 타겟 블록의 변이 벡터를 이용하여 상기 현재 블록의 예측 변이 벡터를 결정하고, 상기 예측 변이 벡터를 이용하여 현재 블록의 예측 블록을 결정하는 것을 특징으로 하는 다시점 비디오 복호화 장치.
- 제12항에 있어서,상기 인덱스는,상기 현재 블록이 P-프레임에 포함되는 경우, 상기 현재 블록과 관련된 스킵 모드(SKIP Mode)를 나타내고,상기 현재 블록이 B-프레임에 포함되는 경우, 상기 현재 블록과 관련된 다이렉트 모드에 포함된 다이렉트 스킵 모드(Direct SKIP Mode)를 나타내는 것을 특징으로 하는 다시점 비디오 복호화 장치.
- 제1 시점의 프레임에 포함된 현재 블록이 제1 스킵 모드 또는 제2 스킵 모드로 부호화되었는 지 여부를 나타내는 부호화된 인덱스를 복호화하는 인덱스 복호화부; 및상기 복호화된 인덱스에 따라 결정된 현재 블록의 스킵 모드에 기초하여 현재 블록을 복원하는 블록 복원부를 포함하고,상기 제1 스킵 모드는, 제1 시점의 프레임에서 현재 블록의 예측 블록을 결정하고,상기 제2 스킵 모드는, 제2 시점의 프레임에서 현재 블록의 예측 블록을 결정하는 것을 특징으로 하는 다시점 비디오 복호화 장치.
- 제16항에 있어서,상기 블록 복원부는,상기 현재 블록이 제1 스킵 모드로 부호화된 경우, 상기 현재 블록에 인접한 주변 블록들 중 상기 현재 블록이 포함된 프레임과 다른 시간을 나타내는 제1 시점의 프레임을 참조하는 주변 블록의 움직임 벡터를 이용하여 상기 현재 블록의 예측 움직임 벡터를 결정하고, 상기 예측 움직임 벡터를 이용하여 상기 현재 블록의 예측 블록을 결정하는 것을 특징으로 하는 다시점 비디오 복호화 장치.
- 제16항에 있어서,상기 블록 복원부는,상기 현재 블록이 제2 스킵 모드로 부호화된 경우, 상기 현재 블록에 인접한 주변 블록들 중 제2 시점의 프레임을 참조하는 주변 블록의 변이 벡터를 이용하여 상기 현재 블록의 예측 변이 벡터를 결정하고, 상기 예측 변이 벡터를 이용하여 상기 현재 블록의 예측 블록을 결정하는 것을 특징으로 하는 다시점 비디오 복호화 장치.
- 제16항에 있어서,상기 블록 복원부는,상기 현재 블록이 제2 스킵 모드로 부호화된 경우, 상기 제1 시점의 프레임들 중 상기 현재 블록이 포함된 프레임과 다른 시간을 나타내는 제1 시점의 프레임에서 상기 현재 블록과 동일한 위치에 대응하는 타겟 블록의 변이 벡터를 이용하여 상기 현재 블록의 예측 변이 벡터를 결정하고, 상기 예측 변이 벡터를 이용하여 상기 현재 블록의 예측 블록을 결정하는 것을 특징으로 하는 다시점 비디오 복호화 장치.
- 제1 시점의 프레임에 포함된 현재 블록을 제2 시점의 프레임을 이용하는 스킵 모드로 부호화할 지 여부를 결정하는 단계; 및상기 현재 블록을 스킵 모드에 따라 부호화하는 경우, 상기 스킵 모드를 나타내는 인덱스를 부호화하여 비트스트림을 생성하는 단계를 포함하는 다시점 비디오 부호화 방법.
- 제1 시점의 프레임에 포함된 현재 블록을 제1 시점의 프레임을 이용하는 제1 스킵 모드로 부호화할 지 또는 제2 시점의 프레임을 이용하는 제2 스킵 모드로 부호화할 지 여부를 결정하는 단계; 및상기 현재 블록에 대해 결정된 스킵 모드를 나타내는 인덱스를 부호화하여 비트스트림을 생성하는 단계를 포함하는 다시점 비디오 부호화 방법.
- 제1 시점의 프레임에 포함된 현재 블록의 스킵 모드를 나타내는 부호화된 인덱스를 복호화하는 단계;상기 현재 블록의 스킵 모드에 따라 제2 시점의 프레임에서 현재 블록의 예측 블록을 추출하여 상기 현재 블록을 복원하는 단계를 포함하는 다시점 비디오 복호화 방법.
- 제1 시점의 프레임에 포함된 현재 블록이 제1 스킵 모드 또는 제2 스킵 모드로 부호화되었는 지 여부를 나타내는 부호화된 인덱스를 복호화하는 단계; 및상기 복호화된 인덱스에 따라 결정된 현재 블록의 스킵 모드에 기초하여 현재 블록을 복원하는 단계를 포함하고,상기 제1 스킵 모드는, 제1 시점의 프레임에서 현재 블록의 예측 블록을 결정하고,상기 제2 스킵 모드는, 제2 시점의 프레임에서 현재 블록의 예측 블록을 결정하는 것을 특징으로 하는 다시점 비디오 복호화 방법.
- 제20항 내지 제23항 중 어느 한 항의 방법을 실행하기 위한 프로그램이 기록된 컴퓨터에서 판독 가능한 기록 매체.
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JP2013544387A JP2014505398A (ja) | 2010-12-14 | 2011-12-13 | 多視点ビデオ符号化/復号化装置及び方法 |
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CN104301739A (zh) * | 2013-07-18 | 2015-01-21 | 联发科技(新加坡)私人有限公司 | 多视点视频编码方法 |
CN104782126A (zh) * | 2012-09-28 | 2015-07-15 | 三星电子株式会社 | 用于对多视点图像进行编码/解码的设备和方法 |
JP2015527806A (ja) * | 2012-07-11 | 2015-09-17 | エルジー エレクトロニクス インコーポレイティド | ビデオ信号処理方法及び装置 |
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SG11201502627QA (en) * | 2012-10-05 | 2015-05-28 | Mediatek Singapore Pte Ltd | Method and apparatus of motion vector derivation 3d video coding |
WO2014065546A1 (ko) * | 2012-10-22 | 2014-05-01 | (주)휴맥스 | 3차원 비디오에서의 뷰간 움직임 예측 방법 및 뷰간 병합 후보 결정 방법 |
US9596448B2 (en) * | 2013-03-18 | 2017-03-14 | Qualcomm Incorporated | Simplifications on disparity vector derivation and motion vector prediction in 3D video coding |
US9609347B2 (en) * | 2013-04-04 | 2017-03-28 | Qualcomm Incorporated | Advanced merge mode for three-dimensional (3D) video coding |
CA2921759C (en) * | 2013-10-17 | 2018-05-15 | Mediatek Inc. | Method of motion information prediction and inheritance in multi-view and three-dimensional video coding |
WO2015188297A1 (zh) * | 2014-06-08 | 2015-12-17 | 北京大学深圳研究生院 | 加权跳过模式的视频图像块压缩算术编解码方法及装置 |
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KR100667830B1 (ko) * | 2005-11-05 | 2007-01-11 | 삼성전자주식회사 | 다시점 동영상을 부호화하는 방법 및 장치 |
ZA200805337B (en) * | 2006-01-09 | 2009-11-25 | Thomson Licensing | Method and apparatus for providing reduced resolution update mode for multiview video coding |
TWI344792B (en) * | 2006-07-12 | 2011-07-01 | Lg Electronics Inc | A method and apparatus for processing a signal |
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JP5249242B2 (ja) * | 2007-01-24 | 2013-07-31 | エルジー エレクトロニクス インコーポレイティド | ビデオ信号処理方法及び装置 |
JP2010520697A (ja) * | 2007-03-02 | 2010-06-10 | エルジー エレクトロニクス インコーポレイティド | ビデオ信号のデコーディング/エンコーディング方法及び装置 |
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CN101816180B (zh) * | 2007-08-06 | 2013-01-16 | 汤姆森特许公司 | 利用多个视图间参考画面的运动跳跃模式的方法和装置 |
CN101415115B (zh) | 2007-10-15 | 2011-02-02 | 华为技术有限公司 | 基于运动跳跃模式的视频编解码方法及其编解码器 |
KR101524465B1 (ko) * | 2008-01-10 | 2015-06-02 | 삼성전자주식회사 | 색차 보상을 이용한 다시점 비디오 부호화 방법과 그 장치 및 다시점 비디오 복호화 방법과 그 장치 |
CN102017627B (zh) * | 2008-04-25 | 2013-05-01 | 汤姆森许可贸易公司 | 使用基于深度信息的视差估计的多视点视频编码 |
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Cited By (6)
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JP2015527806A (ja) * | 2012-07-11 | 2015-09-17 | エルジー エレクトロニクス インコーポレイティド | ビデオ信号処理方法及び装置 |
CN104782126A (zh) * | 2012-09-28 | 2015-07-15 | 三星电子株式会社 | 用于对多视点图像进行编码/解码的设备和方法 |
US9900620B2 (en) | 2012-09-28 | 2018-02-20 | Samsung Electronics Co., Ltd. | Apparatus and method for coding/decoding multi-view image |
CN104782126B (zh) * | 2012-09-28 | 2019-01-18 | 三星电子株式会社 | 用于对多视点图像进行编码/解码的设备和方法 |
CN104301739A (zh) * | 2013-07-18 | 2015-01-21 | 联发科技(新加坡)私人有限公司 | 多视点视频编码方法 |
US9743066B2 (en) | 2013-07-18 | 2017-08-22 | Hfi Innovation Inc. | Method of fast encoder decision in 3D video coding |
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KR20120066579A (ko) | 2012-06-22 |
JP2014505398A (ja) | 2014-02-27 |
KR101893559B1 (ko) | 2018-08-31 |
US9615078B2 (en) | 2017-04-04 |
EP3024230A1 (en) | 2016-05-25 |
US20130335526A1 (en) | 2013-12-19 |
CN103370934A (zh) | 2013-10-23 |
EP2654295A2 (en) | 2013-10-23 |
EP2654295A4 (en) | 2015-06-10 |
WO2012081877A3 (ko) | 2012-08-09 |
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