Patent application number | Description | Published |
20090060050 | Method for encoding and decoding video signal - Disclosed is a method for encoding a decoding a video signal. In the procedure of encoding the video signal, when a frame temporarily simultaneous with a frame including a macro block of an enhanced layer which will obtain a prediction video does not exist in a base layer, the macro block is encoded based on difference values of residual data using corresponding residual blocks in a past frame and a future frame of the base layer which are residual data corresponding to image difference values and using a residual block for the macro block of the enhanced layer. In another embodiment, the macro block is encoded based on difference values of residual data using corresponding residual blocks in a past frame and a future frame of the enhanced layer and the residual block for the macro block. Accordingly, a residual prediction mode is applied for a macro block of an enhanced layer even if a frame temporally simultaneous with a frame of the enhanced layer does not exist in a base layer, thereby improve coding efficiency. | 03-05-2009 |
20090190658 | METHOD FOR ENCODING AND DECODING VIDEO SIGNAL - Disclosed is a method for encoding a decoding a video signal. In the procedure of encoding the video signal, when a frame temporarily simultaneous with a frame including a macro block of an enhanced layer which will obtain a prediction video does not exist in a base layer, the macro block is encoded based on difference values of residual data using corresponding residual blocks in a past frame and a future frame of the base layer which are residual data corresponding to image difference values and using a residual block for the macro block of the enhanced layer. In another embodiment, the macro block is encoded based on difference values of residual data using corresponding residual blocks in a past frame and a future frame of the enhanced layer and the residual block for the macro block. Accordingly, a residual prediction mode is applied for a macro block of an enhanced layer even if a frame temporally simultaneous with a frame of the enhanced layer does not exist in a base layer, thereby improve coding efficiency. | 07-30-2009 |
20090190669 | METHOD FOR ENCODING AND DECODING VIDEO SIGNAL - Disclosed is a method for encoding a decoding a video signal. In the procedure of encoding the video signal, when a frame temporarily simultaneous with a frame including a macro block of an enhanced layer which will obtain a prediction video does not exist in a base layer, the macro block is encoded based on difference values of residual data using corresponding residual blocks in a past frame and a future frame of the base layer which are residual data corresponding to image difference values and using a residual block for the macro block of the enhanced layer. In another embodiment, the macro block is encoded based on difference values of residual data using corresponding residual blocks in a past frame and a future frame of the enhanced layer and the residual block for the macro block. Accordingly, a residual prediction mode is applied for a macro block of an enhanced layer even if a frame temporally simultaneous with a frame of the enhanced layer does not exist in a base layer, thereby improve coding efficiency. | 07-30-2009 |
20090190844 | METHOD FOR SCALABLY ENCODING AND DECODING VIDEO SIGNAL - Disclosed is a method for scalably encoding and decoding a video signal. The video signal is encoded through an inter-layer prediction scheme based on a data stream of a base layer encoded with ×¼ resolution. The inter-layer prediction scheme applied between the enhanced layer and the base layer representing ×4 resolution difference includes a motion prediction scheme for predicting motion and dividing a macro block of the enhanced layer based on division information, mode information, and/or mode information of a block of the base layer. Thus, the inter-layer prediction scheme is applied between layers representing ×4 resolution difference, thereby improving a coding efficiency. | 07-30-2009 |
20100208799 | Method for decoding image block - Disclosed is a method for decoding an image block. The method comprises a step of decoding an image block of a first layer based on a corresponding block of a second layer encoded with an intra mode, wherein a first area is formed with pixels, which are adjacent to a corner pixel positioned in the corresponding block in a diagonal direction and extend in vertical and horizontal directions away from the corresponding block, and data are padded in the first area based on the corner pixel and the pixels positioned in the first area and at least one of first and second blocks, which are simultaneously adjacent to the corresponding block and encoded with the intra mode. Accordingly, a reference block required when a macro block is encoded in an intra base mode or when a macro block encoded in the intra base mode is decoded has more precise values, thereby enabling improvement of a coding efficiency. | 08-19-2010 |
20110235714 | Method and device for encoding/decoding video signals using base layer - The present invention relates to encoding and decoding a video signal by motion compensated temporal filtering. In one embodiment, a first sequence of frames are decoded by inverse motion compensated temporal filtering by selectively adding to a first image block in the first sequence image information, the image information being based on at least one of ( | 09-29-2011 |
20150023428 | METHOD AND DEVICE FOR ENCODING/DECODING VIDEO SIGNALS USING BASE LAYER - The present invention relates to encoding and decoding a video signal by motion compensated temporal filtering. In one embodiment, a first sequence of frames are decoded by inverse motion compensated temporal filtering by selectively adding to a first image block in the first sequence image information, the image information being based on at least one of (1) a second image block from the first sequence and (2) a third image block from an auxiliary sequence of frames. | 01-22-2015 |
20150030077 | METHOD OF PREDICTING A MOTION VECTOR FOR A CURRENT BLOCK IN A CURRENT PICTURE - A method of predicting a forward motion vector for a current block in a current picture includes obtaining, by the moving picture decoding device, at least three motion vectors for at least three blocks other than the current block based on a direction of a reference picture, wherein the direction of the reference picture is based on a display order of the reference picture and a display order of the current picture, and the at least three blocks are not in an intra mode, predicting, by the moving picture decoding device, the forward motion vector for the current block by using a median operation of the at least three motion vectors and decoding the current block in the current picture using the predicted forward motion vector for the current block. | 01-29-2015 |
20150030078 | METHOD OF PREDICTING A MOTION VECTOR FOR A CURRENT BLOCK IN A CURRENT PICTURE - A method of predicting a motion vector for a current block in a current picture includes obtaining, by the moving picture decoding device, at least three motion vectors for at least three blocks other than the current block based on a direction of a reference picture, wherein the direction of the reference picture is based on a display order of the reference picture and a display order of the current picture, and the at least three blocks are not in an intra mode and predicting, by the moving picture decoding device, the motion vector for the current block by using a median operation of the at least three motion vectors. | 01-29-2015 |
20150030079 | METHOD OF PREDICING A MOTION VECTOR FOR A CURRENT BLOCK IN A CURRENT PICTURE - A method of predicting a motion vector for a current block in a current picture includes obtaining, by the moving picture decoding device, at least three motion vectors for at least three blocks other than the current block based on a direction of a reference picture, wherein the direction of the reference picture is based on a display order of the reference picture and a display order of the current picture, predicting, by the moving picture decoding device, the motion vector for the current block by using a median operation of the at least three motion vectors and decoding the current block in the current picture using the predicted motion vector for the current block. | 01-29-2015 |
20150030080 | METHOD OF PREDICTING A MOTION VECTOR FOR A CURRENT BLOCK IN ACURRENT PICTURE - A method of predicting a motion vector for a current block in a current picture includes obtaining, by the moving picture decoding device, at least three motion vectors for at least three blocks other than the current block based on a direction of a reference picture, wherein the direction of the reference picture is based on a display order of the reference picture and a display order of the current picture, the at least three motion vectors correspond to the at least three other blocks, respectively, and the at least three blocks are not in an intra mode, predicting, by the moving picture decoding device, the motion vector for the current block by using a median operation of the at least three motion vectors and decoding the current block in the current picture using the predicted motion vector for the current block. | 01-29-2015 |