摘要:
The present invention relates to a video signal decoding method for adding an intra prediction mode as a sub-macroblock type to prediction of a macroblock in coding a video signal. The present invention includes obtaining a macroblock type, obtaining a sub-macroblock type when a macroblock includes a plurality of coded sub-macroblocks according the macroblock type, obtaining flag information indicating a DC (discrete cosine) transform size, determining the DC transform size of the coded sub-macroblock based on the flag information, when the sub-macroblock is intra prediction coded based on the sub-macroblock type, determining a prediction size of the intra prediction coded sub-macroblock based on the determined DC transform size, obtaining prediction direction information from a block adjacent to the sub-macroblock based on the prediction size of the sub-macroblock, and obtaining a prediction value of the sub-macroblock based on the prediction direction information. Accordingly, the present invention is able to raise coding efficiency of video signal by adding an intra prediction mode as a sub-macroblock type in predicting a macroblock.
摘要:
A method and apparatus for decoding a video signal are disclosed. A method for decoding a video signal includes obtaining block type information of a current block, confirming a prediction mode of the current block based on the block type information, obtaining, if the prediction mode of the current block is an intra prediction mode according to the prediction mode, at least one correlation parameter information using at least one neighboring pixel of the current block, obtaining an intra prediction value of the current block using the correlation parameter information, and reconstructing the current block using the intra prediction value of the current block.
摘要:
Disclosed is a method of changing a reference picture list. The present invention includes parsing a profile identifier and a slice type from a multiview video bitstream, obtaining inter-view reference information based on the profile identifier, initializing a reference picture list using the inter-view reference information, and modifying the reference picture list in consideration of the slice type. Accordingly, the present invention defines profile information indicating a stereo video, thereby coding a multiview video signal more efficiently.
摘要:
The present invention relates to a method and apparatus for processing video signals, the method comprising: decoding a current frame of a video signal in block units to generate a restored frame, and acquiring first and second flags to acquire a filter coefficient which is adaptively determined from the video signal for each slice on the basis of flag information, or performing deblocking filtering with a predetermined filter coefficient. The present invention relates to a video signal processing method which includes an inter-frame prediction method that determines a motion vector, and a method for performing inter-frame prediction for a residual image. The method for processing video signals can increase the compression encoding efficiency by performing accurate motion prediction and residual image prediction, and can improve the quality of a restored image by removing distortion and performing a filtering for restoring an image that is close to the original image.
摘要:
In a method for processing video signals acquired from multiple cameras, the present invention provides a method for processing video signals including receiving a multiview video coded bit stream including color pictures and depth pictures, wherein the depth picture indicates a group of digitalized information on a distance between a base camera and an object; acquiring data type identification information from the multiview video coded bit stream, wherein the data type identification information indicates whether or not depth-coded data are included in the multiview video coded bit stream; acquiring reference information between views of the depth picture based upon the data type identification information, wherein the reference information between views of the depth picture includes a number of depth-view reference pictures, and a view identification number of the depth-view reference picture; acquiring an estimation value of the depth picture by using the reference information between views of the depth picture; recovering the depth picture by using the estimation value of the depth picture; and acquiring a 3-dimensional image by using the recovered depth picture.
摘要:
In one embodiment, the method includes obtaining reference picture information, and determining a first reference picture of the bi-predictive image block. The first reference picture has a co-located image block with respect to the bi-predictive image block. A second reference picture is determined based on a motion vector of the co-located image block. At least one motion vector of the bi-predictive image block is obtained according to the motion vector of the co-located image block and the reference picture type of at least one of the first reference picture and the second reference picture. The reference picture information indicates reference picture types of reference pictures, and the reference picture type being based on temporal distance between a current picture including the bi-predictive image block and the reference picture. The bi-predictive image block is decoded by motion-estimating the bi-predictive image block using the motion vector of the bi-predictive image block.
摘要:
A method of decoding a video signal is disclosed. The present invention includes obtaining identification information indicating whether a coded picture of a current NAL unit is an inter-view picture group, obtaining interview reference information of the inter-view picture group, and constructing a reference picture list for inter-view prediction using the inter-view reference information according to the identification information, wherein the inter-view reference information includes view identification information of an inter-view reference picture.
摘要:
A method of decoding a video signal is disclosed. The present invention includes obtaining identification information indicating whether a coded picture of a current NAL unit is an inter-view picture group, obtaining interview reference information of the inter-view picture group, and constructing a reference picture list for inter-view prediction using the inter-view reference information according to the identification information, wherein the inter-view reference information includes view identification information of an inter-view reference picture.
摘要:
A method for selecting a motion vector predictor is provided. The method of selecting a motion vector predictor includes the steps of selecting motion vector predictor candidates for a current block and selecting a motion vector predictor of the current block out of the motion vector predictor candidates, wherein the motion vector predictor candidates for the current block include a motion vector of a first candidate block which is first searched for as an available block out of left neighboring blocks of the current block and a motion vector of a second candidate block which is first searched for as an available block out of upper neighboring blocks of the current block.
摘要:
In the method of determining motion vectors for a bi-predictive image block, reference index information from a co-located image block for the bi-predictive image block is obtained. The motion vectors of the bi-predictive image block are determined based on a type of reference picture referred to by the reference index information.