Patents by Inventor Biao Wang

Biao Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • ENCODER, A DECODER AND CORRESPONDING METHODS USING INTRA MODE CODING FOR INTRA PREDICTION
    Publication number: 20210392373
    Abstract: It is provided a method of prediction coding of a current block, comprising: obtaining an intra prediction mode of a left neighbor block of the current block and an intra prediction mode of an above neighbor block of the current block; constructing a Most Probable Mode (MPM) list of intra prediction modes for the current block, the MPM list comprising at least 5 entries of intra prediction modes as follows: {ang, 2+((ang+61)%64), 2+((ang?1)%64), 2+((ang+60)%64), 2+((ang) %64)} when at least a first condition is fulfilled, where ang represents the intra prediction mode of the left neighbor block or the intra prediction mode of the above neighbor block.
    Type: Application
    Filed: August 20, 2021
    Publication date: December 16, 2021
    Inventors: Biao WANG, Semih ESENLIK, Anand Meher KOTRA, Han GAO, Jianle CHEN
  • In-loop deblocking filter apparatus and method for video coding
    Patent number: 11197031
    Abstract: An in-loop deblocking filter apparatus (120) for processing a current row or column of samples into a filtered row or column of samples. The current row or column of samples comprises a plurality of samples from a first sample block and a horizontally or vertically neighboring second sample block of a reconstructed picture of a video stream. The samples of the current row or column of samples have sample values pN?1?p0, q0?qN?1 wherein N is an even integer greater than 2. If a first condition or a second condition is satisfied, the current row or column is processed by: determining a filtered sample value q0? by applying a (2N?1)-tap filter to the sample values pN?2, . . . , p0, q0, . . . , qN?1 of the current row or column; and/or determining a filtered sample value p0? by applying a (2N?1)-tap filter to the sample values pN?1, . . . , p0, q0, . . . , qN?2 of the current row or column.
    Type: Grant
    Filed: December 27, 2020
    Date of Patent: December 7, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Anand Meher Kotra, Biao Wang, Zhijie Zhao, Semih Esenlik, Han Gao, Jianle Chen
  • Luma intra mode signaling
    Patent number: 11196991
    Abstract: A method of coding implemented by a coding apparatus. The method includes selecting an intra prediction mode for a current block, and encoding the selected intra prediction mode using truncated binary coding when the selected intra prediction mode is a remaining mode.
    Type: Grant
    Filed: June 11, 2020
    Date of Patent: December 7, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Anand Meher Kotra, Jianle Chen, Semih Esenlik, Zhijie Zhao, Han Gao, Biao Wang, Ivan Krasnov
  • Encoder, a Decoder and Corresponding Methods Restricting Size of Sub-Partitions from Intra Sub-Partition Coding Mode Tool
    Publication number: 20210377532
    Abstract: A method of video coding implemented by a coding device includes obtaining block size information of a current block to be coded in an intra sub-partition (ISP) coding mode, determining a partitioning direction based on the block size information, determining, based on the block size information, a number of sub-partitions to which the current block is to be partitioned in the partitioning direction, wherein the sub-partitions are for intra prediction separately with a width of each of the sub-partitions bigger than or equal to 4 or collaboratively by combining at least two of the sub-partitions with a combined width of the at least two sub-partitions bigger than or equal to 4, and coding the sub-partitions.
    Type: Application
    Filed: August 13, 2021
    Publication date: December 2, 2021
    Inventors: Biao Wang, Semih Esenlik, Anand Meher Kotra, Han Gao, Jianle Chen
  • DEBLOCKING FILTER FOR SUB-PARTITION BOUNDARIES CAUSED BY INTRA SUB-PARTITION CODING TOOL
    Publication number: 20210377570
    Abstract: A deblocking method is provided for deblocking a sub-partition boundary within a coding block during image encoding and/or image decoding process. The coding block is coded in an intra prediction mode and the coding block is partitioned into sub-partitions comprising a first sub-partition and a second sub-partition that is adjacent to the first sub-partition. The method comprises: determining a maximum filter length to be 1 for a first/second sub-partition when a width of the first or second sub-partition is 4 samples, or when a height of the first or second sub-partition is 4 samples; modifying a value of up to one sample of the first or second sub-partition, wherein the value of the up to one sample is obtained from a row or a column of the first or second sub-partition that is perpendicular to and adjacent to the sub-partitions boundary between the first sub-partition and the second sub-partition.
    Type: Application
    Filed: August 11, 2021
    Publication date: December 2, 2021
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Biao Wang, Anand Meher Kotra, Semih Esenlik, Han Gao, Jianle Chen
  • ENCODER, A DECODER AND CORRESPONDING METHODS USING HISTORY BASED MOTION VECTOR PREDICTION
    Publication number: 20210360228
    Abstract: Embodiments provide methods and devices (encoder and/or decoder) of coding a picture. A History Based Motion Vector Prediction (HMVP) list for a current Coding Tree Unit (CTU) row within a tile of a picture is initialized and a CTU of the current CTU row is processed based on the initialized HMVP list.
    Type: Application
    Filed: June 18, 2021
    Publication date: November 18, 2021
    Inventors: Anand Meher KOTRA, Jianle CHEN, Semih ESENLIK, Biao WANG, Han GAO, Zhijie ZHAO
  • ENCODER, A DECODER AND CORRESPONDING METHODS FOR INTRA PREDICTION
    Publication number: 20210360234
    Abstract: Devices and methods for Intra prediction are provided. The method includes: obtaining a value of an indication information of a current block. When the value of the indication information indicates the intra prediction mode of the current block is not comprised in the set of most probable modes, deriving the intra prediction mode IntraPredModeY of the current block by the following ordered steps: i. IntraPredModeY is set equal to intra_luma_mpm_remainder[xCb][yCb], ii. The value of IntraPredModeY is incremented by one. The method can improve the efficiency to determine the intra prediction mode of the current block.
    Type: Application
    Filed: April 16, 2021
    Publication date: November 18, 2021
    Inventors: Biao WANG, Semih ESENLIK, Anand Meher KOTRA, Han GAO, Jianle CHEN
  • SAMPLE DISTANCE CALCULATION FOR GEOMETRIC PARTITION MODE
    Publication number: 20210352287
    Abstract: A method of coding implemented by a decoding device or encoding device, the method comprising obtaining a value of an angle parameter for a current block; obtaining a value of a width of the current block and a value of a height of the current block; calculating a ratio value between the value of the width and the value of height; obtaining a first value according to the value of angle parameter and the ratio value; calculating a sample distance value for a sample in the current block according to the first value; obtaining a prediction value for the sample in the current block according to the sample distance value.
    Type: Application
    Filed: July 7, 2021
    Publication date: November 11, 2021
    Inventors: Semih ESENLIK, Max BLAESER, Han GAO, Zhijie ZHAO, Anand Meher KOTRA, Biao WANG, Elena Alexandrovna ALSHINA
  • APPARATUS AND METHOD FOR PERFORMING DEBLOCKING
    Publication number: 20210352284
    Abstract: Embodiments of the present disclosure relate to the field of picture processing. Especially, the embodiments are directed to improving the deblocking filter of an image coding device. During the deblocking, at most a number MA of sample values of the first coding block adjacent to the block edge are modified and at most a number MB of sample values of the second coding block adjacent to the block edge are modified; or at most a number MA of sample values of the second coding block adjacent to the block edge are modified and at most a number MB of sample values of the first coding block adjacent to the block edge are modified, MA?MB.
    Type: Application
    Filed: July 22, 2021
    Publication date: November 11, 2021
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Anand Meher Kotra, Jianle Chen, Semih Esenlik, Biao Wang, Han Gao, Zhijie Zhao
  • ENCODER, DECODER AND CORRESPONDING METHODS USING DCT2 ENABLED HIGH LEVEL FLAG
    Publication number: 20210344920
    Abstract: A method of video coding a block of a picture includes: obtaining a residual signal resulting from inter- or intra-picture prediction; inferring use of a DCT2 transform core for a sequence of the residual signal; processing the transformation of the block using the inferred transform core.
    Type: Application
    Filed: July 8, 2021
    Publication date: November 4, 2021
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Han Gao, Jianle Chen, Semih Esenlik, Anand Meher Kotra, Biao Wang
  • ENCODER, A DECODER AND CORRESPONDING METHODS OF INTRA PREDICTION
    Publication number: 20210344915
    Abstract: The present disclosure provides methods and devices for intra prediction.
    Type: Application
    Filed: July 7, 2021
    Publication date: November 4, 2021
    Inventors: Biao WANG, Semih ESENLIK, Anand Meher KOTRA, Han GAO, Jianle CHEN
  • ENCODER, A DECODER AND CORRESPONDING METHODS OF DEBLOCKING FILTER ADAPTATION
    Publication number: 20210337211
    Abstract: The present disclosure provides a coding method, wherein the coding includes decoding or encoding, and the method comprises determining whether a current coding unit is predicted by application of combined inter-intra prediction (CIIP); and in response to determining that the current coding unit is predicted by application of CIIP, setting a boundary strength of a boundary of the current coding unit to a first value.
    Type: Application
    Filed: July 8, 2021
    Publication date: October 28, 2021
    Inventors: Biao WANG, Anand Meher KOTRA, Semih ESENLIK, Jianle CHEN, Han GAO
  • METHOD AND SYSTEM FOR ACQUIRING ITEM PLACING STATE
    Publication number: 20210319684
    Abstract: The present disclosure provides a method for acquiring an item placing state, including: sending an acquisition request, wherein the acquisition request includes one or more association relationships, each of the association relationships includes an association relationship between a hot zone and a camera equipment, and one hot zone corresponds to one kind of item; and receiving a placing state of an item corresponding to at least one hot zone, wherein the placing state of the item corresponding to the at least one hot zone is determined according to a current image and a standard image of the at least one hot zone in response to the acquisition request. The present disclosure further provides a processing method, a system for acquiring an item placing state and a processing system.
    Type: Application
    Filed: July 26, 2019
    Publication date: October 14, 2021
    Inventors: Bin MA, Xinwei FAN, Yinhua ZHOU, Xingyi LI, Biao WANG
  • ENCODER, DECODER AND CORRESPONDING METHODS FOR INTRA PREDICTION
    Publication number: 20210314563
    Abstract: Devices and methods for Intra prediction are provided. The method includes: parsing a bitstream, wherein the bitstream includes indication information to indicate whether a closest neighboring reference line to the current block is used for an intra prediction; determining an intra prediction mode of the current block is not Planar mode when the closest neighboring reference line to the current block is not used for the intra prediction; and obtaining an index indicating which intra prediction mode in a set of most probable modes is used for the intra prediction mode of the current block when the intra prediction mode of the current block is not Planar mode. The method can improve the efficiency to determine the intra prediction mode of the current block.
    Type: Application
    Filed: June 11, 2021
    Publication date: October 7, 2021
    Inventors: Biao WANG, Semih ESENLIK, Anand Meher KOTRA, Han GAO, Jianle CHEN
  • Apparatus and method for performing deblocking
    Patent number: 11140389
    Abstract: Embodiments of the present invention relate to the field of picture processing. Especially, the embodiments are directed to improving the deblocking filter of an image coding device. During the deblocking, at most a number MA of sample values of the first coding block adjacent to the block edge are modified and at most a number MB of sample values of the second coding block adjacent to the block edge are modified; or at most a number MA of sample values of the second coding block adjacent to the block edge are modified and at most a number MB of sample values of the first coding block adjacent to the block edge are modified, MA?MB.
    Type: Grant
    Filed: August 14, 2020
    Date of Patent: October 5, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Anand Meher Kotra, Jianle Chen, Semih Esenlik, Biao Wang, Han Gao, Zhijie Zhao
  • ENERGY HARVESTER AND A WEARABLE DEVICE
    Publication number: 20210305914
    Abstract: An energy harvester (100) includes: an inner band (110); an outer band (120) arranged to surround the inner band (110), wherein the inner band (110) is coupled to the outer band (120) at a fixed end (20) and the inner band (110) is spaced from the outer band (120) at a free end (30); and an energy generator (150) arranged to generate electric energy through relative movement between the inner band (110) and the outer band (120) at the free end (30). Also disclosed is a wearable device (10) including: a wearable strap formed by the inner band (110) and the outer band (120) of the energy harvester (100), and a mass (130) arranged to receive at least a portion of the wearable device (10).
    Type: Application
    Filed: March 26, 2020
    Publication date: September 30, 2021
    Inventors: Zhengbao Yang, Biao Wang
  • ENCODER, DECODER AND CORRESPONDING METHODS OF MOST PROBABLE MODE LIST CONSTRUCTION FOR BLOCKS WITH MULTI-HYPOTHESIS PREDICTION
    Publication number: 20210289222
    Abstract: The present disclosure relates to the field of picture processing. Especially, the disclosure deals with improving the prediction of a block of a picture when decoding or encoding. A method of coding a block of a picture, comprising: obtaining an indication parameter for a current coding block. The indication parameter represents whether a multi-hypothesis prediction is applied to the current coding block. When the indication parameter represents that the multi-hypothesis prediction is applied to the current coding block, coding the current coding block according to a planar mode.
    Type: Application
    Filed: May 28, 2021
    Publication date: September 16, 2021
    Inventors: Biao WANG, Semih ESENLIK, Jianle CHEN, Anand Meher KOTRA, Han GAO
  • Deblocking filter for sub-partition boundaries caused by intra sub-partition coding tool
    Patent number: 11122299
    Abstract: It is provided a deblocking method, for deblocking a sub-partitions boundary within a coding block in image encoding and/or image decoding. The current coding block is coded in an intra prediction mode and the current coding block is partitioned into sub-partitions comprising a first sub-partition and a second sub-partition which is adjacent to the first sub-partition. The method comprises: determining a maximum filter length to be 1 for a first/second sub-partition when a width of the first or second sub-partition is 4 samples, or when a height of the first or second sub-partition is 4 samples; modifying a value of up to one sample of the first or second sub-partition, wherein the up to one sample is obtained from a row or a column of the first or second sub-partition that is perpendicular to and adjacent to the sub-partitions boundary between the first sub-partition and the second sub-partition.
    Type: Grant
    Filed: August 14, 2020
    Date of Patent: September 14, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Biao Wang, Anand Meher Kotra, Semih Esenlik, Han Gao, Jianle Chen
  • Image Processing Device and Method For Performing Quality Optimized Deblocking
    Publication number: 20210281884
    Abstract: An image processing device for use in an image encoder and/or an image decoder, for deblocking a block edge between a first block and a second block of an image encoded with a block code, is provided. The image processing device comprises a filter for filtering the block edge, configured to, for at least some of the pixels to be filtered, within a deblocking range from the block edge, the deblocking range being perpendicular to the block edge, determine a filtered pixel value from an original pixel value of the pixel and at least one further pixel value, determine a clipping value of the pixel, dependent upon a distance of the pixel from the block edge, and clip the filtered pixel value, using the clipping value resulting in a deblocked pixel value.
    Type: Application
    Filed: March 24, 2021
    Publication date: September 9, 2021
    Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
    Inventors: Anand Meher Kotra, Semih Esenlik, Biao Wang, Han Gao, Zhijie Zhao, Jianle Chen
  • ENCODER, A DECODER AND CORRESPONDING METHODS FOR INTER PREDICTION
    Publication number: 20210281870
    Abstract: A prediction method for an image block comprising a first prediction sub-block and a second prediction sub-block, the prediction method comprising: parsing a first index from a bitstream, wherein the first index is used to obtain prediction information of the first prediction sub-block; parsing a second index from the bitstream; comparing the first index with the second index; adjusting the second index in the event that the second index is equal to or greater than the first index; and obtaining prediction information of the second prediction sub-block according to the adjusted second index.
    Type: Application
    Filed: May 20, 2021
    Publication date: September 9, 2021
    Inventors: Timofey Mikhailovich SOLOVYEV, Semih ESENLIK, Jianle CHEN, Anand Meher KOTRA, Han GAO, Biao WANG, Roman Igorevich CHERNYAK, Alexander Alexandrovich KARABUTOV, Sergey Yurievich IKONIN