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Hfi Innovation Inc patents


Recent patent applications related to Hfi Innovation Inc. Hfi Innovation Inc is listed as an Agent/Assignee. Note: Hfi Innovation Inc may have other listings under different names/spellings. We're not affiliated with Hfi Innovation Inc, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "H" | Hfi Innovation Inc-related inventors


Method and apparatus of binarization and context-adaptive coding for syntax in video coding

A method and apparatus for entropy coding and decoding for source symbols generated in a video coding system are disclosed. According to the present invention, a msb (most significant bit) index and any refinement bit for the current symbol value are determined first. ... Hfi Innovation Inc

Method and apparatus for intra mode coding

A method and apparatus of predictive intra coding of a block are disclosed. In one embodiment according to the present invention, a set of intra prediction modes is determined, and predictive intra coding is applied to a prediction unit (pu) of an image based on one or more neighboring pus according to a current intra prediction mode. ... Hfi Innovation Inc

Method and apparatus for intra mode coding

According to at least one aspect, a method for predictive intra coding is provided. The method comprises: determining a set of intra prediction modes used for prediction unit (pu) blocks with a plurality of different block sizes comprising a 4×4 block size and at least two other block sizes; applying predictive intra coding to a first pu block having a first block size that matches a block size in the plurality of different block sizes based on one or more neighboring pu blocks according to a first intra prediction mode selected from the set of intra prediction modes; and applying predictive intra coding to a second pu block having a second block size that is different from the first block size and matches a block size in the plurality of different block sizes according to a second intra prediction mode selected from the set of intra prediction modes.. ... Hfi Innovation Inc

Method of decoded picture buffer management for intra block copy mode

Methods and apparatus of managing decoded picture buffer for a video decoding system using intra block copy (ibc) mode. In one embodiment, one or more previously reconstructed pictures after in-loop filtering are stored in a dpb (decoded picture buffer). ... Hfi Innovation Inc

Method and apparatus of disparity vector derivation for three- dimensional video coding

A method and apparatus of three-dimensional/multi-view coding using aligned reference information are disclosed. The method operates by receiving input data associated with a current block of a current frame in a dependent view, determining a first dv (disparity vector) from one or more neighboring blocks of the current block, wherein the first dv refers to a first reference view to derive first reference information, selecting a second reference view for the current block to derive second reference information, aligning the first reference information associated with the first reference view with the second reference information associated with the second reference view, and applying inter-view encoding or decoding to the input data utilizing the first dv or the second reference information after applying said aligning the first reference information with the second reference information.. ... Hfi Innovation Inc

Method and apparatus for using a current picture as a reference picture

Methods and apparatus of managing decoded picture buffer for a video coding system are disclosed for a system using an inter prediction mode and an intra block copy mode. According to one method, a current-picture-usage flag in a picture or slice level is determined. ... Hfi Innovation Inc

Method and apparatus for intra block copy reference list construction

A method and apparatus of reference picture list construction for video encoding and decoding includes considering a current picture when an intra picture block copy (intrabc) mode is allowed. Embodiments of the reference picture list construction process comprise receiving input data of a current slice in the current picture, determining a temporary reference picture list for the current slice, and determining a final reference picture list from the temporary reference picture list. ... Hfi Innovation Inc

Method of filter-unit based in-loop filtering

In one embodiment, a method receives a video bitstream corresponding to compressed video, wherein filter unit (fu) based in-loop filtering is allowed in a reconstruction loop associated with the compressed video. The method then derives reconstructed video from the video bitstream, wherein the reconstructed video is partitioned into fus and derives a merge flag from the video bitstream for each of the fus, wherein the merge flag indicates whether said each of the fus is merged with a neighboring fu. ... Hfi Innovation Inc

Methods of palette mode coding in video coding

A simplified syntax signalling for the number of palette indices is disclosed, where the syntax element corresponding to the total number of palette indices minus one is signalled and the palette indices are associated with the copy-index modes in the current block. In another embodiment, a syntax corresponding to the number of palette indices minus 1 is signalled, where the palette indices are associated with the copy-index modes in the current block. ... Hfi Innovation Inc

Methods for palette mode context coding and binarization in video coding

A method of video coding using the palette coding mode with reduced complexity by sharing context(s) between context-based entropy coding of syntax element for the last run type mode and context-based entropy coding of syntax element for the run type mode is disclosed. A method with reduced complexity for binarization of the syntax element associated with the number of palette indices of the current block is disclosed, where rice parameter is derived for the number of palette indices without the need for a division or table lookup operation. ... Hfi Innovation Inc

Method and apparatus for derivation of motion vector predictor candidate set

A method and apparatus for deriving a motion vector predictor (mvp) candidate set for a block are disclosed. Embodiments according to the present invention generate a complete full mvp candidate set based on the redundancy-removed mvp candidate set if one or more redundant mvp candidates exist. ... Hfi Innovation Inc

Method of lookup table size reduction for depth modelling mode in depth coding

A method and apparatus of depth coding using depth modelling mode 1 (dmm1) are disclosed to reduce the wedgelet pattern table size. In one embodiment, a size-reduced wedgelet pattern for a reduced wedgelet pattern table is generated by excluding at least one non-corner adjacent-edge sample for adjacent-edge partition or at least one opposite-edge sample for opposite-edge partition from starting positions or from ending positions. ... Hfi Innovation Inc

Method and apparatus for index map coding in video and image compression

A method and apparatus of video coding using palette coding mode including run modes are disclosed. In one embodiment, the system determines a maximum palette run for a current pixel being coded based on coding information including block size of the current block, pixel location of the current pixel, and whether a last run type for the current block is the copy-index mode or the copy-above mode. ... Hfi Innovation Inc

Method and apparatus for intrabc mode with fractional-pel block vector resolution in video coding

A method and apparatus of video coding using intrabc (intra block copy) mode are disclosed. The system derives a block vector pointing from the current block to a reference block within a reconstructed pixel area of the current picture. ... Hfi Innovation Inc

02/08/18 / #20180041757

Method and apparatus for palette coding of monochrome contents in video and image compression

A method and apparatus of palette coding for video data having color formats including a monochrome format are disclosed. The system determines whether the video data is monochrome or non-monochrome. ... Hfi Innovation Inc

01/25/18 / #20180027246

Method and apparatus for palette predictor initialization for palette coding in video and image compression

A method and apparatus of palette predictor initialization for a coding system using palette coding are disclosed. A sps predictor flag indicating whether sps palette predictor values are present in a current sps and a pps predictor flag indicating whether sps palette predictor values are present in a current pps are used. ... Hfi Innovation Inc

01/11/18 / #20180014029

Method for depth lookup table signaling

A method and apparatus for depth lookup table (dlt) signaling in a three-dimensional and multi-view coding system. The method identifies one or more pictures to be processed. ... Hfi Innovation Inc

01/11/18 / #20180014028

Method and apparatus for compressing coding unit in high efficiency video coding

Methods for decoding of a video bitstream by a video decoding circuit are provided. In one implementation, a method receives coded data for a 2n×2n coding unit (cu) from the video bitstream, selects one or more first codewords according to whether asymmetric motion partition is disabled or enabled when a size of said 2n×2n cu is not equal to a smallest cu size, wherein none of the first codewords corresponds to inter n×n partition, selects one or more second codewords when the size of said 2n×2n cu is equal to the smallest cu size, wherein none of the second codewords corresponds to the inter n×n partition when n is 4, determines a cu structure for said 2n×2n cu from the video bitstream using said one or more first codewords or said one or more second codewords, and decodes the video bitstream using the cu structure.. ... Hfi Innovation Inc

12/28/17 / #20170374372

Methods of palette based prediction for non-444 color format in video and image coding

A method of video coding using palette coding mode for color video in a non-444 color format is disclosed. The non-444 video data can be converted to the 444 format so that the palette designed for the 444 format can be used for the non-444 video data. ... Hfi Innovation Inc

10/26/17 / #20170310961

Method of motion vector and block vector resolution control

A method of video coding using coding modes including intrabc mode (intra-block copy mode) and inter prediction mode is disclosed. In one embodiment, when adaptive motion vector resolution is selected to allow adaptive use of integer resolution or fractional-pel resolution, a resolution indicator having a value corresponding to using integer resolution for all motion vectors and all block vectors is signaled in the current. ... Hfi Innovation Inc

10/12/17 / #20170295370

Method of adaptive motion vector resolution for video coding

A method of mvp (motion vector prediction) for video coding with adaptive motion vector resolution is disclosed. According to the present invention, the mvp coding is applied to the current mv or the current mv is stored depending on the current mv resolution, the reference mv resolution, or both the current mv resolution and the reference mv resolution. ... Hfi Innovation Inc

09/28/17 / #20170280159

Method of intra picture block copy for screen content and video coding

A method of screen content coding (scc) and video coding using coding modes including intrabc mode (intra-block copy mode) is disclosed. In one embodiment, a merge candidate list including one or more intrabc merge candidates and one or more inter merge candidates is derived. ... Hfi Innovation Inc

09/07/17 / #20170257630

Method for palette table initialization and management

A method of palette management for palette coding in a video coding system receives input data associated with a current block in a high-level picture structure and initializes a palette predictor in the high-level picture structure before a corresponding palette of a first palette-coded block in the high-level picture structure is coded. If a palette mode is selected for the current block, the method applies the palette coding to the current block using a current palette and updates the palette predictor based on the current palette to generate an updated palette predictor for a next block coded in the palette mode.. ... Hfi Innovation Inc

07/27/17 / #20170214933

Method and apparatus for residual prediction in three-dimensional video coding

A method for three-dimensional or multi-view video coding receives input data associated with a current block of a current picture in a current dependent view, wherein the current block is inter-time coded based on an inter-time reference block located by a motion vector (mv), determines estimated dv (disparity vector) candidates from neighboring dvs, applies an evaluation function to the estimated dv candidates to obtain evaluation results for the estimated dv candidates, and selects a final estimated dv. The method then determines an inter-view reference region in an inter-view reference picture, determines first pseudo residues, wherein the first pseudo residues correspond to first differences between the inter-view reference region and a pseudo reference region in a pseudo reference picture located by the mv, and applies encoding or decoding to the input data associated with residues of the current block utilizing the first pseudo residues.. ... Hfi Innovation Inc

07/06/17 / #20170195687

Method and apparatus for mv scaling with increased effective scaling ratio

A method and apparatus for deriving a scaled motion vector (mv) for a current block based on a candidate mv associated with a candidate block determines a first picture distance between a current picture corresponding to the current block and a target reference picture pointed to by a current motion vector of the current block, and then determines a second picture distance between a candidate picture corresponding to the candidate block and a candidate reference picture pointed to by the candidate mv of the candidate block. The method further determines a pre-scaled distance division having a first value related to dividing a pre-scaling factor by the second picture distance, and determines an intermediate scaling factor by right-shifting a multiplication result associated with the first picture distance and the pre-scaled distance division by q bits, wherein q is a positive integer.. ... Hfi Innovation Inc

07/06/17 / #20170195676

Method of palette predictor signaling for video coding

Methods for coding syntax related to palette coding generated in a video coding system are disclosed. According to one embodiment, the current block size checked against the pre-defined block size. ... Hfi Innovation Inc

06/08/17 / #20170163982

Method and apparatus of adaptive loop filtering

A method and apparatus for processing of coded video using in-loop processing are disclosed. The method operates by receiving input data to said in-loop processing, wherein the input data corresponds to reconstructed coding units of the picture; configuring the input data into multiple filter units; selecting a filter from a candidate filter set comprising at least two candidate filters associated with said in-loop processing for one of said multiple filter units; applying said in-loop processing to said one of said multiple filter units using the selected filter to generate a processed filter unit, wherein when said one of said multiple filter units comprises at least two reconstructed coding units, the selected filter is applied to all of said at least two reconstructed coding units; and providing processed video data comprising the processed filter unit. ... Hfi Innovation Inc

06/01/17 / #20170155921

Method and apparatus for deriving temporal motion vector prediction

A method and apparatus for deriving a motion vector predictor (mvp) for a motion vector (mv) of a current block of a current picture in inter, or merge, or skip mode. The method selects a co-located block corresponding to a co-located picture, receives one or more reference motion vectors (mvs) of one or more co-located reference blocks associated with the co-located block, and determines a search set that includes one or more search mvs associated with said one or more co-located reference blocks. ... Hfi Innovation Inc

05/11/17 / #20170134725

Methods of handling escape pixel as a predictor in index map coding

Methods to overcome issues associated with predictors being an escape pixel in palette coding using a copy mode are disclosed. According to one embodiment, if the predictor for a copy-above mode is an escape pixel, the pixel value of the current escape pixel is transmitted so that it can be reconstructed using the transmitted pixel value. ... Hfi Innovation Inc

05/11/17 / #20170134724

Method of intra block copy search and compensation range

A method of intrabc coding using restricted reference area is disclosed. A reference block is selected from an available ladder-shaped reference area comprising previously processed blocks before the current working block in the current ctu row and previously processed blocks in one or more previous ctu rows. ... Hfi Innovation Inc

05/04/17 / #20170127086

Method and apparatus of candidate generation for single sample mode in video coding

A method and apparatus of video coding for a block of depth data or texture data coded in ssm (single sample mode) are disclosed. Embodiments according to the present invention construct a sample candidate list comprising one or more single color candidates corresponding to one or more representative samples of one or more previous ssm-coded blocks, or one or more palette color candidates corresponding to one or more previously used colors in one or more previous palettes associated with one or more palette-coded blocks, or both. ... Hfi Innovation Inc

05/04/17 / #20170127077

Methods for palette size signaling and conditional palette escape flag signaling

Methods for palette coding of image and video data to avoid issues associated with zero-size palette or to improve performance by conditionally signaling cu (coding unit)-level escape pixel presence flag are disclosed. In one embodiment, size information related to palette size of a current palette table of the current cu is signaled conditionally based on the escape indication flag, where the escape indication flag indicates whether there is any sample in the current cu coded as an escape pixel. ... Hfi Innovation Inc

04/20/17 / #20170111651

Method and apparatus for palette table prediction and signaling

A method and apparatus for predictive palette coding of image and video data are disclosed. Reuse flags are used to indicate whether individual palette values in the current palette table are used in the palette predictor table. ... Hfi Innovation Inc

04/13/17 / #20170105002

Methods of handling escape pixel as a predictor in index map coding

In a palette prediction that includes a copy-above mode for predicting one or more first pixels based on one or more above pixels located above said one or more first pixels correspondingly, a method of palette mode coding using palette prediction for a picture includes receiving input data associated with a current block and determining a current coding mode for one or more current pixels. If the current coding mode corresponds to the copy-above mode, then the method identifies one or more above pixels located above said one or more current pixels correspondingly, wherein said one or more above pixels are restricted to be non-escape pixels. ... Hfi Innovation Inc

04/13/17 / #20170104997

Method and system of transform block processing according to quantization matrix in video coding

A method and system process transform blocks according to quantization matrices in a video coding system. The method includes obtaining an initial quantization matrix having a first width and a first height, obtaining a derived quantization matrix having a second width and a second height, wherein the second width is different from the second height, and the derived quantization matrix is derived from the initial quantization matrix, receiving a transform block having a block size, where the transform block is associated with a picture, and selecting the initial quantization matrix or the derived quantization matrix for processing transform coefficients of the transform block according to the block size.. ... Hfi Innovation Inc

03/30/17 / #20170094275

Method and apparatus for quantization level clipping

A method and apparatus for clipping a transform coefficient are disclosed. In one implementation, a method is implemented in a video encoder for clipping a quantization level. ... Hfi Innovation Inc

03/30/17 / #20170094273

Method and apparatus for reduction of deblocking filter

A method and apparatus for deblocking reconstructed video in a video coding system. The method receives reconstructed pixel data, wherein the reconstructed pixel data is configured into lcus (largest coding units) and each lcu is divided into blocks. ... Hfi Innovation Inc

03/30/17 / #20170094271

Method of intra block copy search and compensation range

A method of intrabc coding using restricted reference area is disclosed. A reference block is selected from an available ladder-shaped reference area comprising previously processed blocks before the current working block in the current ctu row and previously processed blocks in one or more previous ctu rows. ... Hfi Innovation Inc

03/16/17 / #20170078695

Method and apparatus for intra mode coding

A method and apparatus of predictive intra coding of a block are disclosed. In one embodiment according to the present invention, a set of intra prediction modes is determined, and predictive intra coding is applied to a prediction unit (pu) of an image based on one or more neighboring pus according to a current intra prediction mode. ... Hfi Innovation Inc

02/16/17 / #20170048540

Method and apparatus for compressing coding unit in high efficiency video coding

A method for decoding of a video bitstream including receiving coded data for a 2n×2n coding unit (cu) from the video bitstream, selecting one or more first codewords according to whether asymmetric motion partition is disabled or enabled, selecting one or more second codewords when a size of the 2n×2n cu is equal to a smallest cu size, wherein none of the second codewords corresponds to inter n×n partition when n is 4, determining a cu structure for the 2n×2n cu from the video bitstream using the first codewords or the second codewords, and decoding the video bitstream using the cu structure. A corresponding method for encoding a 2n×2n coding unit of video data is also disclosed.. ... Hfi Innovation Inc

02/09/17 / #20170041638

Method and apparatus for coding of sample adaptive offset information

A method and apparatus for sample adaptive offset (sao) processing of video data in a video decoder are disclosed. In an embodiment, the method includes receiving a block of processed-reconstructed pixels associated with a picture from a media or a processor, wherein the block of processed-reconstructed pixels are decoded from a video bitstream; determining a sao type index from the video bitstream, wherein the sao type index is decoded according to truncated unary binarization, the sao type index is decoded using cabac (context-based adaptive binary arithmetic coding) with one context, or the sao type index is decoded by cabac using a context mode for a first bin associated with the sao type index and using a bypass mode for any remaining bin associated with the sao type index; and applying sao processing to the block of processed-reconstructed pixels based on sao information including the sao type index.. ... Hfi Innovation Inc

02/09/17 / #20170041637

Method and apparatus for block-based significance map and significance group flag context selection

A method of significance group flag coding is disclosed. The method includes: receiving one or more significance group flags associated with a tu (transform unit), wherein the tu is divided into one or more sub-blocks; and coding said one or more significance group flags based on context set selection, wherein the context set selection is associated with significance map coding of the sub-block, and the context set selection depends on horizontal sub-block index, vertical sub-block index, or both the horizontal sub-block index and the vertical sub-block index.. ... Hfi Innovation Inc

02/09/17 / #20170041623

Method and apparatus for intra coding for a block in a coding system

A method and apparatus of intra coding for a block in a coding system. The method includes receiving input data associated with a current block; determining a current intra prediction mode for the current block; deriving prediction samples for the current block based on reconstructed neighboring samples according to the current intra prediction mode, wherein a predicting value representing a single prediction value for the current block is determined based on at least two corner samples corresponding to the current block according to the current intra prediction mode; and applying encoding or decoding to the input data associated with the current block using the prediction samples derived for the current block.. ... Hfi Innovation Inc

02/09/17 / #20170041022

Method and apparatus for reordered binarization of syntax elements in cabac

A method of context-based adaptive binary arithmetic decoding for syntax elements of a coding unit coded by intra prediction is disclosed. The method includes receiving binary arithmetic coded bins associated with the coding unit, the coded bins includes a first part comprising regular bins associated with prediction units (pus) partitioned from the coding unit and a second part comprising bypass bins associated with each pu, wherein the regular bins relate to an indication of intra prediction mode selection associated with each pu and the bypass bins relate to an index for a most probable mode and/or a remaining prediction mode associated with each pu; determining a first codeword comprising the regular bins and corresponding to a first syntax element for each pu; determining a second codeword comprising the bypass bins and corresponding to a second syntax element for each pu; and providing the first and second syntax elements for each pu.. ... Hfi Innovation Inc

02/02/17 / #20170034533

Method and apparatus for syntax redundancy removal in palette coding

A method and apparatus for palette coding of a block of video data using a candidate prediction mode list with syntax redundancy removed are disclosed. In one embodiment, whether a redundant prediction mode exists in the candidate prediction mode list for the current samples of the current block is determined based on the candidate prediction mode list and the previous prediction mode associated with the previous samples. ... Hfi Innovation Inc

02/02/17 / #20170034529

Method of 3d or multi-view video coding including view synthesis prediction

A method and apparatus for 3d (three-dimensional) and multi-view video encoding or decoding of dependent-view texture or depth data using merge mode with modified list size according to one or more 3d enabling flags are disclosed. An extra-candidate-number indicating one or more extra merge candidates for the current block is determined according to one or more 3d enabling flags comprising a vsp (view synthesis prediction) flag. ... Hfi Innovation Inc

01/26/17 / #20170026641

Method for palette table initialization and management

A method and apparatus for palette coding of a block of video data using a shared palette/palette prediction buffer are disclosed. The system receives a bitstream including compressed data associated with a current palette coded block and determines a palette predictor for the current palette coded block stored in a shared palette/palette predictor buffer. ... Hfi Innovation Inc

01/19/17 / #20170019677

Method of color index coding with palette stuffing

A method of coding a block of video data using palette coding is disclosed. According to the present invention, when a previous block is available, the system receives first information related to a previous palette set corresponding to previous palettes/triplet palette, and second information related to a previous palette predictor set corresponding to previous palette predictors/triplet-palette predictors associated with the previous block. ... Hfi Innovation Inc

01/19/17 / #20170019665

Method and apparatus of single sample mode for video coding

A method and apparatus of video coding including a single sample mode are disclosed. Embodiments according to the present invention construct a sample candidate list comprising one or more sample candidates from previously reconstructed neighboring samples of the current depth block or the current texture block. ... Hfi Innovation Inc

01/12/17 / #20170013276

Method for low-latency illumination compensation process and depth lookup table based coding

A method and apparatus for low-latency illumination compensation in a three-dimensional (3d) and multi-view coding system are disclosed. According to the present invention, the encoder determines whether to enable or disable the illumination compensation for the current picture or slice based on a condition related to statistic associated with a selected reference picture or slice respectively, or related to high-level coding information associated with the current picture or slice respectively. ... Hfi Innovation Inc








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