Decoding a picture based on a reference picture set on an electronic device

• US 10,129,555 B2
• Filed: 11/25/2016
• Issued: 11/13/2018
• Est. Priority Date: 01/19/2012
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Zhao, Jie, Segall, Christopher A., Deshpande, Sachin G.
• Primary Examiner(s): Tabatabai, Abolfazl
• Application Number:
  US15/361,115
• Publication Number:
  US 20170127075A1
• Time in Patent Office: 718 Days
• Field of Search: 382100, 382232, 382233, 375262, 375265, 375341, 712208, 712209, 712210, 712211, 712212, 712213
• CPC Class Codes: H04N 19/105 Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
• CPC Class Codes: H04N 19/159 Prediction type, e.g. intra-frame, inter-frame or bidirectional frame prediction
• CPC Class Codes: H04N 19/164 Feedback from the receiver or from the transmission channel
• CPC Class Codes: H04N 19/172 the region being a picture, frame or field
• CPC Class Codes: H04N 19/174 the region being a slice, e.g. a line of blocks or a group of blocks
• CPC Class Codes: H04N 19/176 the region being a block, e.g. a macroblock
• CPC Class Codes: H04N 19/184 the unit being bits, e.g. of the compressed video stream
• CPC Class Codes: H04N 19/423 characterised by memory arrangements H04N19/433 takes precedence
• CPC Class Codes: H04N 19/44 Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
• CPC Class Codes: H04N 19/46 Embedding additional information in the video signal during the compression process H04N19/517, H04N19/68, H04N19/70 take precedence
• CPC Class Codes: H04N 19/503 involving temporal prediction adaptive coding with adaptive selection between spatial and temporal predictive coding H04N19/107; adaptive coding with adaptive selection among a plurality of temporal predictive coding modes H04N19/109
• CPC Class Codes: H04N 19/58 Motion compensation with long-term prediction, i.e. the reference frame for a current frame not being the temporally closest one H04N19/23 takes precedence
• CPC Class Codes: H04N 19/65 using error resilience
• CPC Class Codes: H04N 19/70 characterised by syntax aspects related to video coding, e.g. related to compression standards

Abstract

A method for decoding a picture on an electronic device is described. The method includes obtaining a bitstream. The method also includes obtaining a current picture. The method further includes obtaining a relative reference picture set (RPS) parameter. The method additionally includes initializing an index value. Furthermore, the method includes processing another RPS parameter based on the index value. The method also includes decoding the current picture.

Claims

1. An electronic device comprising a decoder for decoding a video bitstream, the decoder is configured for performing a method comprising,

identifying a reference picture set from the bitstream, wherein the bitstream includes at least one flag corresponding to at least one reference picture of the reference picture set, wherein a current picture is associated with the reference picture set and encoded in the bitstream;

decoding the current picture from the bitstream using inter prediction with some reference pictures within the reference picture set;

decoding the at least one flag from the bitstream, wherein the at least one flag indicates that the at least one reference picture is to be kept for decoding subsequent pictures, and wherein the at least one reference picture is not used for decoding the current picture; and

keeping the at least one reference picture associated to the at least one flag in a reference picture buffer of the device after the current picture has been decoded.

2. The electronic device of claim 1, wherein identifying the reference picture set is based on a slice header obtained from said bitstream.

3. An electronic device comprising an encoder for encoding a video bitstream, the encoder is configured for performing a method comprising:

generating a reference picture set for a current picture of the video bitstream;

encoding a block of the current picture using inter prediction with some reference pictures within the reference picture set;

sending said reference picture set to said bitstream;

sending, to the bitstream, at least one flag corresponding to at least one reference picture of the reference picture set, wherein the at least one flag indicates that the at least one reference picture is not to be used for decoding the current picture and is to be kept for decoding subsequent pictures; and

sending said encoded block to the bitstream.

4. The electronic device of claim 3, wherein sending the reference picture set is sent via a slice header.

5. A device comprising:

non-transitory memory for storing computer-executable instructions; and

a processor operatively coupled to the non-transitory memory, the processor being configured to execute the computer-executable instructions to;

identify a reference picture set from the bitstream, wherein the bitstream includes at least one flag corresponding to at least one reference picture of the reference picture set, wherein a current picture is associated with the reference picture set and encoded in the bitstream;

decode the current picture from the bitstream using inter prediction with some reference pictures within the reference picture set;

decode the at least one flag from the bitstream, wherein the at least one flag indicates that the at least one reference picture is to be kept for decoding subsequent pictures, and wherein the at least one reference picture is not used for decoding the current picture; and

keep the at least one reference picture associated to the at least one flag in a reference picture buffer of the device after the current picture has been decoded.

6. The device of claim 5, wherein the processor being configured to execute the computer-executable instructions to:

identify the reference picture set is based on a slice header obtained from said bitstream.

7. A device comprising:

non-transitory memory for storing computer-executable instructions; and

a processor operatively coupled to the non-transitory memory, the processor being configured to execute the computer-executable instructions to;

generate a reference picture set for a current picture of the video bitstream;

encode a block of the current picture using inter prediction with some reference pictures within the reference picture set;

send said reference picture set to said bitstream;

send, to the bitstream, at least one flag corresponding to at least one reference picture of the reference picture set, wherein the at least one flag indicates that the at least one reference picture is not to be used for decoding the current picture and is to be kept for decoding subsequent pictures; and

send said encoded block to the bitstream.

8. The device of claim 7, wherein the processor being configured to execute the computer-executable instructions to:

send the reference picture set is sent via a slice header.