Abstract:
The present invention relates to an intra prediction method and to an apparatus using the same. The intra prediction method according to the present invention comprises the following steps: inducing a current prediction mode as a prediction mode for a current block; constructing peripheral samples of the current block to an available reference sample; filtering the available reference sample; and generating a prediction sample for the current block based on the filtered modified reference sample, wherein the filtering step is performed using the available reference sample located in a prediction direction of the current prediction mode and a predetermined number of available reference samples arranged near said prediction direction of the current prediction mode.
Abstract:
The present invention relates to a method offor signaling information on a prediction mode and to a method of for decoding image information using same. A According to the present invention, the method offor signaling prediction mode information, serving according to the present invention, as a method offor signaling image information, includes performingperforming prediction on a current block and signaling the prediction -type information applied to the current block. The signaling of the information includes joint-coding and components of signaling information components constituting the prediction -type information. According to the present invention, overhead may be reduced when information on a prediction is signaled.
Abstract:
According to the present invention, an inter-prediction method includes: receiving mode information on the inter-prediction of a current block; decoding the received mode information; and performing inter-prediction using the decoded mode information. According to the present invention, image compression efficiency may be improved.
Abstract:
The present invention includes obtaining block type identification information on a partition of the current macroblock when the current macroblock is intra-mixed, specifying a block type of the current macroblock based on the block type identification information, obtaining an intra prediction mode of the current macroblock according to the block type of the partition of the current macroblock, and predicting the current macroblock using the intra prediction mode and a pixel value of a neighboring block.
Abstract:
The present invention relates to a method and apparatus for processing video signals, the method comprising: receiving a video signal; decoding a current frame of the 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. Moreover, the present invention relates to a video signal processing method which includes an inter-frame prediction method that efficiently determines a motion vector to perform motion prediction, as well as a method for performing inter-frame prediction for a residual image. The method for processing video signals according to the present invention can increase the compression encoding efficiency of a video signal by performing accurate motion prediction and residual image prediction, and can improve the quality of a restored image by removing distortion which occurs when restoring an image and performing a filtering operation for restoring an image that is nearly identical to the original image.
Abstract:
The present invention relates to a video signal processing method, which obtains a picture coding structure flag for a picture of a reference view if the picture of the reference view is used for inter-view prediction according to inter-view reference flag information for the picture of the reference view, generates a reference picture list for the inter-view prediction on the basis of the picture coding structure flag, and predicts a pixel value of a picture of a non-reference view by using the reference picture list for the inter-view prediction. According to the present invention, profile information indicative of a stereo video can be defined whereby a multi-view video signal is more efficiently coded, and an access unit is redefined, thereby performing the inter-view prediction without being limited to a coding format of an inter-view reference picture when the stereo video is decoded.
Abstract:
A method of processing a video signal is disclosed. The present invention includes obtaining a current macroblock type, obtaining skip or direct mode indication information on a partition of the current macroblock according to the current macroblock type, deriving a motion vector of the partition according to the skip or direct mode indication information, and predicting a pixel value of the partition using the motion vector. Accordingly, the present invention obtains a pixel value of a reference block close to an original video using a motion vector, thereby enhancing a reconstruction ratio of the macroblock. As a macroblock uses skip or direct prediction indication information, it is unnecessary to separately code skip mode indication information and direct mode indication information on the macroblock, whereby an information size to be coded can be reduced.
Abstract:
A method of processing a video signal is disclosed. The present invention includes receiving prediction mode information of a current block, generating a half pel using an integer pel of a neighbor block, and generating a predictor of the current block using the half pel and the prediction mode information.
Abstract:
An apparatus for processing a video signal and method thereof are disclosed. The present invention includes determining an intra reference block in a current view layer by using an intra motion information of an inter-reference unit in a reference view layer, the inter-reference unit being partially decoded and decoding the current block in the current view layer by using the intra-reference block. Accordingly, in coding a video signal, pictures failing to be substantially referred to for reconstruction of a current picture can be omitted. According to another aspect of the present invention, residual information having high redundancy is omitted to raise a compression ratio.
Abstract:
An apparatus for processing a video signal and method thereof are disclosed, by which duplication of inter-view pictures is eliminated to decode the video signal, by which a global motion vector of a current picture is generated based on relevance between inter-view pictures to decode the video signal, and by which motion information for a current picture is obtained based on relevance between inter-view pictures to perform motion compensation. The present invention includes searching a reference block corresponding to a current block; obtaining motion information for the reference block from the video signal; generating motion information for the current block using the motion information for the reference block; calculating a predictive value of the current block using the motion information for the current block; and reconstructing the current block using the predictive value of the current block, wherein the reference block is located at a position moved from a same position corresponding to the current block by a global motion vector of a current picture.