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

• US 10,116,953 B2
• Filed: 12/12/2016
• Issued: 10/30/2018
• 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:
  US15/376,247
• Publication Number:
  US 20170094270A1
• Time in Patent Office: 687 Days
• Field of Search: 382100, 382232, 382233, 375262, 375265, 375341, 712208, 712209, 712210, 712 21, 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. A method for decoding a video bitstream, the method comprising:

identifying a reference picture set from the video bitstream, wherein the video bitstream includes at least one flag associated with one of long and short term reference pictures of the reference picture set, wherein a current picture associated with the reference picture set is encoded in the video bitstream; and

decoding the current picture from the video bitstream using inter prediction with the reference picture set; and

parsing the at least one flag, wherein the at least one flag indicates keeping the at least one reference picture for decoding subsequent pictures.

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

3. A method for encoding a video bitstream comprising:

generating a reference picture set for a current picture of the video bitstream, wherein the reference picture set includes long term and short term reference pictures;

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

sending the reference picture set to the video bitstream;

setting and sending at least one flag, associated with one of the long term and short term reference pictures of the reference picture set, into the video bitstream, wherein the at least one flag indicates keeping the at least one reference picture for decoding subsequent pictures; and

sending the encoded block to the video bitstream.

4. The method of claim 3, wherein sending the reference picture set comprises sending the reference picture set in a slice header.

5. An electronic device for decoding a video bitstream, the electronic device comprising:

a processor;

a memory in electronic communication with the processor;

instructions stored in the memory for execution by the processor, the instructions when executed configuring the processor to;

identify a reference picture set from the video bitstream, wherein the video bitstream includes at least one flag associated with one of long term and short term reference pictures of the reference picture set, wherein a current picture associated with the reference picture set is encoded in the video bitstream; and

decode the current picture from the video bitstream using inter prediction with the reference picture set; and

parse the at least one flag, wherein the at least one flag indicates keeping the at least one reference picture for decoding subsequent pictures.

6. The electronic device of claim 5, wherein identifying the reference picture set is based on a slice header obtained from the video bitstream.

7. An electronic device for encoding a video bitstream, comprising:

a processor;

a memory in electronic communication with the processor;

instructions stored in the memory for execution by the processor, the instructions when executed configuring the processor to;

generate a reference picture set containing long term and short term reference pictures;

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

send the reference picture set to the video bitstream;

set and send at least one flag, associated with one of the long term and short term reference pictures of the reference picture set, into the video bitstream, wherein the at least one flag indicates keeping the at least one reference picture for decoding subsequent pictures; and

send the encoded data to the video bitstream.

8. The electronic device of claim 7, wherein sending the reference picture set comprises sending the reference picture set in a slice header.