Signaling and selection for layers in scalable video

• US 10,477,217 B2
• Filed: 06/20/2018
• Issued: 11/12/2019
• Est. Priority Date: 05/21/2014
• Status: Active Grant

• Current Assignee: ARRIS Enterprises LLC (CommScope Holding Company, Inc.)
• Original Assignee: ARRIS Enterprises LLC (CommScope Holding Company, Inc.)
• Inventors: Narasimhan, Mandayam, Luthra, Ajay
• Primary Examiner(s): Perungavoor, Sathyanaraya V
• Assistant Examiner(s): Dhillon, Peet
• Application Number:
  US16/013,934
• Publication Number:
  US 20180302628A1
• Time in Patent Office: 510 Days
• Field of Search: 37524026, 375E07021
• CPC Class Codes: H04N 19/14 Coding unit complexity, e.g. amount of activity or edge presence estimation H04N19/146 takes precedence
• CPC Class Codes: H04N 19/156 Availability of hardware or computational resources, e.g. encoding based on power-saving criteria
• CPC Class Codes: H04N 19/187 the unit being a scalable video layer
• CPC Class Codes: H04N 19/30 using hierarchical techniques, e.g. scalability H04N19/63 takes precedence
• CPC Class Codes: H04N 19/31 in the temporal domain
• CPC Class Codes: H04N 19/34 Scalability techniques involving progressive bit-plane based encoding of the enhancement layer, e.g. fine granular scalability [FGS]
• CPC Class Codes: H04N 19/36 Scalability techniques involving formatting the layers as a function of picture distortion after decoding, e.g. signal-to-noise [SNR] scalability
• 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 19/70 characterised by syntax aspects related to video coding, e.g. related to compression standards
• CPC Class Codes: H04N 21/234327 by decomposing into layers, e.g. base layer and one or more enhancement layers
• CPC Class Codes: H04N 21/2362 Generation or processing of Service Information [SI]
• CPC Class Codes: H04N 21/238 Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams hybrid fiber coaxial [HFC] networks for downstream channel allocation for video distribution H04L12/2801; flow control in packet networks H04L47/10; real-time communication protocols in data switching networks H04L65/00; scheduling or organising the servicing of application requests H04L67/60
• CPC Class Codes: H04N 21/4345 Extraction or processing of SI, e.g. extracting service information from an MPEG stream
• CPC Class Codes: H04N 21/4347 Demultiplexing of several video streams
• CPC Class Codes: H04N 21/44004 involving video buffer management, e.g. video decoder buffer or video display buffer

Abstract

A method is provided for signaling individual layer parameters in a transport stream that includes: indicating, using a supplemental enhancement information (SEI) message in the video stream, operation point information; inserting the operation point information in the transport stream using an operation point descriptor; and providing the operation point descriptor in a Program Map Table (PMT).

Claims

1. A method for decoding a transport stream carrying high efficiency video coding (HEVC) video streams that include one or more temporal layers and one or more spatial layers, each layer encoded in a respective elementary stream, the transport stream signaling individual layer parameters for layers in the HEVC video streams, the method comprising:

identifying in the transport stream an HEVC video descriptor including one or more syntax elements that apply to a whole HEVC layered stream;

determining from the HEVC video descriptor one or more elements that indicate whether a plurality of temporal layers are present in one or more spatial layers in the HEVC layered stream;

identifying in the transport stream an operation point descriptor including one or more syntax elements that;

signal individual layer parameters for each temporal layer present in the HEVC layered video stream, and

identify an operation point including one or more temporal layers and one or more spatial layers present in the HEVC layered stream;

wherein the individual layer parameters signaled in the operation point descriptor are associated to a relevant elementary stream using a Program Map Table (PMT); and

buffering for a decoding process each temporal and/or spatial layer in the HEVC layered stream using parameters signaled in the operation point descriptor, wherein each temporal and/or spatial layer in the HEVC layered stream is individually buffered.

2. The method of claim 1, wherein one of the individual layer parameters signaled in the operation point descriptor is at least one of an average bit rate or a maximum bit rate.

3. The method of claim 1, wherein an SEI message signals to a video decoder that individual layer parameters are available for the one or more individual layers.

4. The method of claim 1, wherein the HEVC layered stream comprises an enhancement layer and an additional enhancement layer that has been added to an operation point list.

5. The method of claim 4, further comprising receiving in the transport stream at least one of the bitrate, rendering capability, and decoding capability of the additional enhancement layer.

6. The method of claim 5, further comprising selecting and rendering the additional enhancement layer in the PMT.

7. The method of claim 1, wherein the transport stream indicates a scalable enhancement for the transport stream.

8. The method of claim 7, wherein the scalable enhancement comprises a spatial, temporal, and/or signal-to-noise ratio (SNR) enhancement.

9. The method of claim 7, wherein scalable enhancement comprises a view-depth and/or view-texture enhancement.

10. The method of claim 1, wherein the transport stream comprises HEVC, scalable HEVC (SHVC), multiview HEVC (MV HEVC), or combinations thereof.

11. The method of claim 1, wherein the one or more spatial layers in the HEVC layered stream includes at least one of:

a single base layer or a base layer and one or more enhancement layers dependent on another layer.

12. The method of claim 1, wherein the HEVC layered stream includes multiple temporal layers in a single spatial layer or multiple spatial layers.

13. The method of claim 11, wherein the operation point descriptor includes operation points for each of the HEVC video streams carried by the transport stream, each operation point identifying a combination of one or more temporal layers and one or more spatial layers for decoding a respective one of the HEVC video streams.