Patent application number | Description | Published |
20120002722 | METHOD AND APPARATUS FOR REGION-BASED FILTER PARAMETER SELECTION FOR DE-ARTIFACT FILTERING - Methods and apparatus are provided for region-based filter parameter selection for de-artifact filtering. An apparatus includes an encoder for encoding picture data for at least a region of a picture. The encoder includes a de-artifact filter for performing de-artifact filtering on the region using region-based filter parameter selection. The region includes any of a non-block-boundary, a block boundary, a combination thereof, and the non-block-boundary to an exclusion of any block boundaries. | 01-05-2012 |
20120099642 | METHODS AND APPARATUS FOR SPATIALLY VARYING RESIDUE CODING - Methods and apparatus are provided for spatially varying residue coding. An apparatus includes a video encoder ( | 04-26-2012 |
20120106628 | METHODS AND APPARATUS FOR VIDEO ENCODING AND DECODING BINARY SETS USING ADAPTIVE TREE SELECTION - Methods and apparatus are provided for encoding and decoding binary sets using adaptive tree selection. In one exemplary encoding method embodiment, picture data is encoded for a block in a picture; in which one of a plurality of trees structures is selected to code a binary set of data for indicating coefficient significance for the block. In another exemplary encoding method embodiment, picture data is encoded for a block in a picture, in which one or more trees are used to encode a binary set of data for indicating coefficient significance for the block, the one or more trees each having a plurality of nodes, at least one of the nodes of the one or more trees being modified responsive to at least one parameter. | 05-03-2012 |
20120106629 | METHODS AND APPARATUS FOR SIGNALING INTRA PREDICTION FOR LARGE BLOCKS FOR VIDEO ENCODERS AND DECODERS - Methods and apparatus are provided for signaling intra prediction for large blocks for video encoders and decoders. An apparatus includes a video encoder for encoding picture data for at least one large block in a picture by signaling intra prediction for the at least one large block. The intra prediction is signaled by selecting a basic coding unit size and assigning a single spatial intra partition type for the basic coding unit size. The single spatial intra partition type is selectable from among a plurality of spatial intra partition types. The at least one large block has a large block size greater than a block size of the basic coding unit. The intra prediction is hierarchical layer intra prediction and is performed for the at least one large block by at least one of splitting from the large block size to the basic coding unit size and merging from the basic coding unit size to the large block size. | 05-03-2012 |
20120114048 | METHODS AND APPARATUS FOR COLLABORATIVE PARTITION CODING FOR REGION BASED FILTERS - Methods and apparatus are provided for collaborative partition coding for region based filters. An apparatus includes a video encoder ( | 05-10-2012 |
20120140830 | METHODS AND APPARATUS FOR IMPROVED INTRA CHROMA ENCODING AND DECODING - Methods and apparatus are provided for improved chroma encoding and decoding. An apparatus includes an encoder for encoding picture data for at least a block in a picture. Multiple partition types are supported for intra chroma coding of the block. The multiple partition types include a set of chroma partition types and a set of luma partition types. The set of chroma partition types are different than the set of luma partition types. | 06-07-2012 |
20120170652 | METHODS AND APPARATUS FOR EFFICIENT VIDEO ENCODING AND DECODING OF INTRA PREDICTION MODE - Methods and apparatus are provided for efficient video encoding and decoding of intra prediction mode. An apparatus includes a video encoder for encoding picture data for at least a block in a picture by determining a spatial pattern for a decoded intra prediction mode residue used to reconstruct the picture at the video encoder. The decoded intra prediction mode residue is obtained by inverse quantizing and inverse transforming a transformed and quantized difference between an original version of the block and at least one reference block. The spatial pattern is used to determine an intra prediction mode for encoding the block. | 07-05-2012 |
20120177129 | METHODS AND APPARATUS FOR ADAPTIVE PROBABILITY UPDATE FOR NON-CODED SYNTAX - There is provided an apparatus. The apparatus includes an encoder ( | 07-12-2012 |
20120183053 | METHODS AND APPARATUS FOR EMBEDDED QUANTIZATION PARAMETER ADJUSTMENT IN VIDEO ENCODING AND DECODING - Methods and apparatus are provided for embedded quantization parameter adjustment in video encoding and decoding. An apparatus includes an encoder for encoding picture data for at least a block in a picture. A quantization parameter, applied to one or more transform coefficients obtained by transforming a difference between an original version of the block and at least one reference block, is derived from reconstructed data corresponding to at least the block. | 07-19-2012 |
20120201293 | METHODS AND APPARATUS FOR ADAPTIVE CODING OF MOTION INFORMATION - Methods and apparatus are provided for adaptive coding of motion information. An apparatus includes an encoder for encoding at least a block in a picture using a motion vector. An adaptive motion vector accuracy scheme is used to select an accuracy of the motion vector used to encode the block. Selection criteria for selecting the accuracy for the motion vector include non-rate-distortion-based criteria. | 08-09-2012 |
20120201311 | METHODS AND APPARATUS FOR ADAPTIVE FILTERING OF PREDICTION PIXELS FOR CHROMA COMPONENTS IN VIDEO ENCODING AND DECODING - Methods and apparatus are provided for adaptive filtering of prediction pixels for chroma components in video encoding and decoding. An apparatus includes a video encoder for encoding picture data for at least a portion of a picture. The video encoder includes an adaptive filter for performing filtering of prediction data used to generate an intra prediction for a chroma component of the portion of the picture. The filtering is adaptive with respect to at least one of filter parameters for the filtering and whether the filtering is used or bypassed. | 08-09-2012 |
20120213279 | METHODS AND APPARATUS FOR DC INTRA PREDICTION MODE FOR VIDEO ENCODING AND DECODING - Methods and apparatus are provided for DC intra prediction mode for video encoding and decoding. An apparatus includes a video encoder for encoding image data for at least a portion of an input picture by deriving a direct current prediction value from a pre-determined constant and using the derived direct current prediction value for a direct current intra prediction mode. The portion is encoded using the direct current intra prediction mode. | 08-23-2012 |
20120230394 | METHODS AND APPARATUS FOR IMPROVED CHROMA TRANSFORMS FOR INTER FRAMES IN VIDEO ENCODING AND DECODING - Methods and apparatus are provided for improved chroma transforms for inter frames in video encoding and decoding. The apparatus and method encode at least a portion of a picture using inter-coding, wherein a transform is adaptively selected, from among a plurality of transforms, to apply to chroma components of the portion responsive to at least one selection criterion ( | 09-13-2012 |
20120281752 | METHODS AND APPARATUS FOR ADAPTIVE RESIDUAL UPDATING OF TEMPLATE MATCHING PREDICTION FOR VIDEO ENCODING AND DECODING - Methods and apparatus are provided for adaptive residual updating of template matching prediction for video encoding and decoding. In one embodiment, an apparatus and method encodes picture data for at least a block in a picture using template matching prediction, wherein the template matching prediction involves selecting from among a plurality of residual updating schemes for use in encoding the block. In another embodiment, an apparatus and method encodes a block in a picture using template matching prediction, wherein the template matching prediction involves partitioning the block into a plurality of sub-blocks, and applying a transform to a residual of a particular sub-block from among the plurality of sub-blocks subsequent to searching for a prediction for the particular sub-block block and prior to completion of processing of the block with respect to the template matching prediction. | 11-08-2012 |
20120281753 | METHODS AND APPARATUS FOR ADAPTIVE COUPLED PRE-PROCESSING AND POST-PROCESSING FILTERS FOR VIDEO ENCODING AND DECODING - Methods and apparatus are provided for adaptive coupled pre-processing and post-processing filters for video encoding and decoding. The apparatus and method encode input data for a picture into a resultant bitstream, wherein said video encoder comprises a pre-filter and a post-filter coupled to the pre-filter, wherein said pre-filter filters the input data for the picture and the post-filter filters in-loop reconstructed data for the picture. | 11-08-2012 |
20120320973 | METHODS AND APPARATUS FOR A CLASSIFICATION-BASED LOOP FILTER - Methods and apparatus for a classification-based loop filter are provided. An encoding method encodes an input picture by transforming and quantizing a residue of the input picture to obtain quantized transform coefficients. Then inverse quantizing and inverse transforming the quantized transform coefficients to obtain a reconstructed version of the residue. A reconstructed version of the input picture is obtained by combining at least one reference picture with the reconstructed version of the residue. Pixels in the reconstructed version of the input picture are classified within a respective one of a plurality of categories responsive to local geometric characteristics. Pixels are selected for filtering responsive to a corresponding classification of the pixels with respect to the plurality of categories. | 12-20-2012 |
20130016768 | METHODS AND APPARATUS FOR EFFICIENT ADAPTIVE FILTERING FOR VIDEO ENCODERS AND DECODERS - Methods and apparatus are provided for efficient adaptive filtering for video encoders and decoders. An apparatus includes a video encoder for encoding picture data for at least a portion of a picture using adaptive filtering. The video encoder includes an adaptive filter for performing the adaptive filtering. A final filter coefficient set used for the adaptive filtering is determined by iteratively estimating a plurality of filter coefficient sets and selecting a last estimated one of the plurality of filter coefficient sets as the final filter coefficient set when a last iteration corresponding to the last estimated one of the plurality of filter coefficient sets results in a quality improvement above a threshold value for the portion. | 01-17-2013 |
20130051453 | METHODS AND APPARATUS FOR CONSTRAINED TRANSFORMS FOR VIDEO CODING AND DECODING HAVING TRANSFORM SELECTION - Methods and apparatus are provided for constrained transforms for video coding and decoding having transform selection. An apparatus includes a video encoder for encoding at least a block in a picture by selecting a particular transform from at least a first transform and a second transform that is different than the first transform, and applying the particular transform to a residue of the block. Transform coefficients for the second transform are selected responsive to a deblocking filter that is present in the video encoder. | 02-28-2013 |
20130058411 | METHODS AND APPARATUS FOR INTRA CODING A BLOCK HAVING PIXELS ASSIGNED TO GROUPS - Methods and apparatus are provided for intra coding a block having pixels assigned to groups. An apparatus includes a video encoder for encoding a block in a picture using intra prediction by dividing pixels within the block into at least a first group and a second group and encoding the pixels in the first group prior to encoding the pixels in the second group. A prediction for at least one of the pixels within the second group is obtained by evaluating the pixels within the first group and the second group. | 03-07-2013 |
20130058418 | Methods and Apparatus for Unified Significance Map Coding - Methods and apparatus are provided for unified significance map coding. An apparatus includes a video encoder for encoding transform coefficients for at least a portion of a picture. The transform coefficients are obtained using a plurality of transforms. One or more context sharing maps are generated for the transform coefficients based on a unified rule. The one or more context sharing maps are for providing at least one context that is shared among at least some of the transform coefficients obtained from at least two different ones of the plurality of transforms. | 03-07-2013 |
20130058421 | METHODS AND APPARATUS FOR ADAPTIVE DIRECTIONAL FILTER FOR VIDEO RESTORATION - Methods and apparatus are provided for an adaptive directional filter for video restoration. An apparatus includes a video encoder for encoding at least a portion of a picture by categorizing pixels in the portion into respective ones of a plurality of groups, and selecting on a pixel basis filtering parameters for filtering the pixels responsive to the respective ones of the plurality of groups to which the pixels belong. | 03-07-2013 |
20130064301 | METHODS AND APPARATUS FOR ADAPTIVE MOTION VECTOR CANDIDATE ORDERING FOR VIDEO ENCODING AND DECODING - Methods and apparatus are provided for adaptive motion vector candidate ordering for video encoding and decoding. An apparatus includes a video encoder for encoding a block in a picture by selecting an order of motion vector predictor candidates for the block responsive to a characteristic available at both the video encoder and a corresponding decoder. The characteristic excludes a mode in which the block is partitioned. | 03-14-2013 |
20130077871 | Methods and Apparatus for Determining Quantization Parameter Predictors from a Plurality of Neighboring Quantization Parameters - Methods and apparatus are provided for determining quantization parameter predictors from a plurality of neighboring quantization parameters. An apparatus includes an encoder for encoding image data for at least a portion of a picture using a quantization parameter predictor for a current quantization parameter to be applied to the image data. The quantization parameter predictor is determined using multiple quantization parameters from previously coded neighboring portions. A difference between the current quantization parameter and the quantization parameter predictor is encoded for signaling to a corresponding decoder. | 03-28-2013 |
20130208787 | Methods And Apparatus For Implicit Adaptive Motion Vector Predictor Selection For Video Encoding And Decoding - Methods and apparatus are provided for implicit adaptive motion vector predictor selection for video encoding and decoding. The method encodes an image block using implicit adaptive motion vector predictor selection. The motion vector for encoding the block is predicted by defining a set of motion vector predictor candidates for the block based on a plurality of spatio-temporal neighboring motion vectors; and then selecting from the set a particular motion vector predictor candidate as the motion vector for encoding the bloc. The selection is made responsive to respective values for a fidelity of the spatio-temporal neighboring motion vectors. | 08-15-2013 |
20140010295 | Methods and Apparatus for Geometric-Based Intra Prediction - Methods and apparatus are provided for geometric-based intra prediction. An apparatus includes a video encoder for encoding picture data for at least a portion of a block in a picture by detecting a local geometric pattern in a surrounding area with respect to the portion, and performing at least one of interpolation and extrapolation with respect to an edge direction of the local geometric pattern to generate an intra prediction for the portion. | 01-09-2014 |