Methods and devices for encoding and decoding using parameter sets, and electronic equipment

    公开(公告)号:US11477473B2

    公开(公告)日:2022-10-18

    申请号:US17382244

    申请日:2021-07-21

    Inventor: Ming Li Ping Wu

    Abstract: Provided are methods and devices for encoding and decoding using parameter sets, and electronic equipment. In the method for encoding, an encoder determines parameter sets and/or virtual parameter sets for a slice, wherein the virtual parameter set is a data structure which is generated by loading information acquired from a bitstream into a syntax structure of an existing parameter set and/or a preset syntax structure and includes tool parameters and/or control parameters; and the encoder writes identification number (ID) (s) of the parameter sets and/or virtual parameter sets into a bitstream. Using the method, encoding and decoding efficiency is improved.

    Method and device for encoding and decoding parameter sets at slice level

    公开(公告)号:US11252428B2

    公开(公告)日:2022-02-15

    申请号:US16995469

    申请日:2020-08-17

    Inventor: Ming Li Ping Wu

    Abstract: Provided is a method for encoding parameter sets at slice level. The method includes: when there are one or more parameter sets, in which the coding tool parameters are identical to the coding tool parameters of a part of coding tools used for the current slice, in the existing parameter sets, encoding the identifiers of parameter sets into bit-stream of the current slice, wherein a parameter set contains common information of the coding tools used in the process of encoding/decoding slice(s). Correspondingly, also provided is a method for decoding parameter sets at slice level and a device for encoding and decoding parameter sets at slice level, which can make full use of the encoded parameter set information when the slice header refers to a plurality of parameter sets, implement flexible configuration of the coding tools used in the process of encoding/decoding slice(s) and reduce information redundancy.

    METHOD AND DEVICE FOR ENCODING AND DECODING PARAMETER SETS AT SLICE LEVEL

    公开(公告)号:US20210076056A1

    公开(公告)日:2021-03-11

    申请号:US16995469

    申请日:2020-08-17

    Inventor: Ming Li Ping Wu

    Abstract: Provided is a method for encoding parameter sets at slice level. The method includes: when there are one or more parameter sets, in which the coding tool parameters are identical to the coding tool parameters of a part of coding tools used for the current slice, in the existing parameter sets, encoding the identifiers of parameter sets into bit-stream of the current slice, wherein a parameter set contains common information of the coding tools used in the process of encoding/decoding slice(s). Correspondingly, also provided is a method for decoding parameter sets at slice level and a device for encoding and decoding parameter sets at slice level, which can make full use of the encoded parameter set information when the slice header refers to a plurality of parameter sets, implement flexible configuration of the coding tools used in the process of encoding/decoding slice(s) and reduce information redundancy.

    Method and device for coding POC, method and device for decoding POC, and electronic equipment

    公开(公告)号:US10827170B2

    公开(公告)日:2020-11-03

    申请号:US16518183

    申请日:2019-07-22

    Abstract: Provided are a method and a device for decoding a Picture Order Count (POC), and a method and a device for coding a POC, and electronic equipment. The method for decoding the POC includes that: parameters for Most Significant Bit (MSB) and Least Significant Bit (LSB) used in an alignment operation on the POC are acquired; an MSB value and an LSB value of a POC value of a current picture are determined according to the parameters for MSB and LSB; and the POC value of the current picture is calculated according to the MSB value and the LSB value. By means of the technical solution, the problems in the related art that the accuracy in decoding and outputting a multilayer video bitstream cannot be ensured and an extra overhead of network resources is increased in multilayer video coding and decoding processes are solved.

    Method for decoding at picture and slice layer according to a constrained loop filter control flag

    公开(公告)号:US10547851B2

    公开(公告)日:2020-01-28

    申请号:US14650942

    申请日:2012-11-01

    Inventor: Ming Li Ping Wu

    Abstract: Disclosed are methods for coding and decoding at picture layer and slice layer, and corresponding coder and decoder. The method comprises: coder selecting, according to network transmission state and video characteristic, different constrained loop filter (CLF) and/or constrained intra-prediction (CIP) control modes for one of the following three objects: 1: different video sequences; 2: pictures in different periods in the same video sequence; 3: different slices in the same picture; according to the selected CLF and/or CIP control mode, coding CLF and/or CIP control flag bits in picture layer parameter set and slice layer parameter set; and a decoder parsing slice layer bitstream containing header information, picture layer parameter set and/or slice layer parameter set, and according to the obtained CLF and/or CIP control flag bits, decoding picture and slice by using the corresponding CLF and/or CIP control mode. Through the present invention, a desirable tradeoff can be achieved between coding efficiency and error resilience performance.

    METHOD AND DEVICE FOR ENCODING AND DECODING PARAMETER SETS AT SLICE LEVEL

    公开(公告)号:US20190273935A1

    公开(公告)日:2019-09-05

    申请号:US16417596

    申请日:2019-05-20

    Inventor: Ming Li Ping Wu

    Abstract: Provided is a method for encoding parameter sets at slice level. The method includes: when there are one or more parameter sets, in which the coding tool parameters are identical to the coding tool parameters of a part of coding tools used for the current slice, in the existing parameter sets, encoding the identifiers of parameter sets into bit-stream of the current slice, wherein a parameter set contains common information of the coding tools used in the process of encoding/decoding slice(s). Correspondingly, also provided is a method for decoding parameter sets at slice level and a device for encoding and decoding parameter sets at slice level, which can make full use of the encoded parameter set information when the slice header refers to a plurality of parameter sets, implement flexible configuration of the coding tools used in the process of encoding/decoding slice(s) and reduce information redundancy.

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