Patent application number | Description | Published |
20120236942 | Method and Apparatus for Deriving Temporal Motion Vector Prediction - A method and apparatus for deriving a temporal motion vector predictor (MVP) are disclosed. The MVP is derived for a current block of a current picture in Inter, or Merge, or Skip mode based on co-located reference blocks of a co-located block and a flag is used to indicate the co-located picture. More than one co-located reference blocks can be used to derive the temporal MVP and the co-located reference blocks can be selected from the co-located block as well as neighboring blocks of the co-located block. A search set comprises search motion vectors associated with the co-located reference block(s) is formed. The search motion vector (MV) corresponding to the co-located reference block in the same reference list is searched before the search MV in a different reference list. Various schemes to accommodate implicit method of deriving co-located picture are also disclosed. | 09-20-2012 |
20140169478 | METHOD AND APPARATUS OF DEBLOCKING FILTER WITH SIMPLIFIED BOUNDARY STRENGTH DECISION - A method and apparatus for deblocking of reconstructed video in a video coding system are disclosed. Embodiments according to the present invention determine boundary strength between two blocks without checking whether the block boundary is a coding unit (CU) boundary. In one embodiment according to the present invention, the method comprises determining whether any of the two blocks is Intra coded. If any of the two blocks is Intra coded, the boundary strength is assigned a first value. Otherwise, additional decision processing is performed to determine the boundary strength. In another embodiment, said determining the boundary strength for the block boundary comprises determining whether the block boundary is a TU boundary and whether any of the two blocks contains coefficients. In yet another embodiment, said determining the boundary strength for the block boundary comprises determining whether the two blocks have different reference pictures or different motion vectors. | 06-19-2014 |
20140211848 | METHOD AND APPARATUS FOR REDUCTION OF DEBLOCKING FILTER - A method and apparatus for deblocking of reconstructed video are disclosed. In one embodiment, the method divides a block boundary into two sub-boundaries and separates lines or column across the sub-boundaries into two groups. The deblocking filter decision for each group is determined based on the lines or columns in the respective group. In another embodiment, the method divides block edges of blocks in the LCUs into two edge groups, where the first edge group corresponds to horizontal block edges between two LCUs and the second edge group corresponds to remaining block edges not included in the first edge group. The number of lines processed by a vertical filter in the first edge group is less than the number of lines processed by a vertical filter in the second edge group. Accordingly, a system embodying the present invention has reduced storage requirement. | 07-31-2014 |
20150022633 | METHOD OF FAST ENCODER DECISION IN 3D VIDEO CODING - Multi-view video encoding using early Merge mode decision and/or early CU split termination is disclosed. The present invention encodes a current coding block using the Merge/Skip mode without evaluating coding performance for at least one of Inter modes and Intra modes if the coding conditions associated with the current coding block and a neighboring block set of the current coding block are asserted. The coding conditions may correspond to whether the coding performance of the Skip mode is better than the coding performance of 2N×2N Merge mode for the current coding block and whether all blocks in the neighboring block set select the Merge mode or the Skip mode. Similarly, the process of splitting the current coding block into smaller coding blocks can be terminated without evaluating coding performance associated with the smaller coding blocks from splitting the current coding block if some coding conditions are asserted. | 01-22-2015 |
20150030067 | METHOD AND APPARATUS FOR CODED BLOCK FLAG CODING IN HIGH EFFICIENCY VIDEO CODING - A method and an apparatus for decoding of a video bitstream are disclosed. In one embodiment, the method comprises: decoding a first coded block flag (cbf) of the color component indicating whether a current coding unit (CU) of the color component has at least one non-zero transform coefficient ( | 01-29-2015 |
20150110180 | METHOD AND APPARATUS FOR INTRA TRANSFORM SKIP MODE - A method and apparatus for video coding including an Intra transform Skip mode is disclosed. When the transform Skip mode is ON for a transform unit, embodiments according to the present invention apply different coding processes to the transform unit. The coding process with the transform Skip mode ON uses a different scan pattern from the coding process with the transform Skip mode OFF. According to various embodiments, the transform Skip mode is enabled when the transform unit size is 4×4, the prediction unit and the transform unit having the same size, or the prediction unit uses an INTRA_N×N mode. When the transform Skip mode is enabled, a flag can be signaled in the bitstream to indicate the transform Skip mode selection. Furthermore, the flag can be incorporated in a picture level, a slice level or a sequence level of the video bitstream. | 04-23-2015 |
20150189323 | Method of Three-Dimensional and Multiview Video Coding Using a Disparity Vector - A method and apparatus for a three-dimensional or multi-view video encoding or decoding system are disclosed, where a three-dimensional coding tool relying on a disparity vector are adaptively applied depending on whether the inter-view reference picture pointed by the disparity vector is in the reference list associated with the current slice. The three-dimensional coding tool may correspond to the Inter-View Motion Prediction (IVMP) or View Synthesis Prediction (VSP). If the inter-view reference picture pointed by the DV is not in the current reference list associated with the current slice, the selected three-dimensional coding tool is disabled for the current block. If the inter-view reference picture pointed by the DV is in the current reference list associated with the current slice, the selected three-dimensional coding tool can be applied to the current block. | 07-02-2015 |
20150195570 | Method of Texture Dependent Depth Partition - A method of improved texture-partition-dependent depth partition is disclosed. First, the available texture partitions for a collocated texture block are classified into two or more groups, and a set of candidate depth partitions is determined for each group. In one embodiment, at least one set of the candidate depth partitions contain more than one candidate depth partition and less than all candidate depth partitions. In another embodiment, the collocated texture blocks are classified into two groups, and one of the two groups includes the N×N texture partition and at least another texture partition. In yet another embodiment, the collocated texture blocks are classified into three groups or more. A current depth partition for the current depth block is then selected from a corresponding set of candidate depth partitions according to a corresponding group that a current texture partition associated with the collocated texture block belongs. | 07-09-2015 |