METHOD AND APPARATUS FOR PROCESSING VIDEO SIGNAL

• US 20160100180A1
• Filed: 04/17/2014
• Published: 04/07/2016
• Est. Priority Date: 04/17/2013
• Status: Abandoned Application

• Current Assignee: WILUS Inc.
• Original Assignee: WILUS Inc.
• Inventors: OH, Hyunoh
• Application Number:
  US14/784,951
• Publication Number:
  US 20160100180A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04N 19/107 between spatial and temporal predictive coding, e.g. picture refresh
• CPC Class Codes: H04N 19/157 Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
• CPC Class Codes: H04N 19/172 the region being a picture, frame or field
• 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 19/44 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 19/50 using predictive coding H04N19/61 takes precedence
• CPC Class Codes: H04N 19/573 Motion compensation with multiple frame prediction using two or more reference frames in a given prediction direction
• 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

Abstract

The present invention provides a method and an apparatus for processing a video signal, and more particularly, a method and an apparatus for processing a video signal, which encode and decode the video signal.

To this end, the present invention provides a method for processing a video signal, including: receiving a scalable video signal including a base layer and an enhancement layer; decoding pictures of the base layer; generating an interlayer reference picture list for interlayer prediction by using the pictures of the base layer; and decoding pictures of the enhancement layer by using the interlayer reference picture list, wherein when a current picture of the enhancement layer is a random access decodable leading (RADL) picture, an interlayer reference picture list corresponding to the current picture does not include a random access skipped leading (RASL) picture, and an apparatus for processing a video signal using the same.

Claims

1. A method for processing a video signal, the method comprising:

receiving a scalable video signal including a base layer and an enhancement layer;

decoding pictures of the base layer;

generating an interlayer reference picture list for interlayer prediction by using the pictures of the base layer; and

decoding pictures of the enhancement layer by using the interlayer reference picture list,

wherein when a current picture of the enhancement layer is a random access decodable leading (RADL) picture, an interlayer reference picture list corresponding to the current picture does not include a random access skipped leading (RASL) picture.

2. The method of claim 1, wherein the RADL picture is a leading picture which is normally decodable when random access is performed and the RASL picture is a leading picture which is not normally decoded when the random access is performed, and

the leading picture is a picture that precedes a random access point picture in output order and follows the random access point picture in decoding order.

3. The method of claim 1, wherein the RASL picture of the base layer is configured not to be used as a reference picture of the interlayer prediction.

4. The method of claim 1, wherein a reference picture of the interlayer prediction of the current picture is one of a random access picture, a trailing picture, and the RADL picture.

5. The method of claim 1, wherein when a picture of the base layer collocated with the current picture is the RASL picture, the current picture does not perform the interlayer prediction.

6. The method of claim 1, wherein the interlayer reference picture list upsamples or resamples the pictures of the base layer and stores the upsampled or resampled pictures.

7. An apparatus for processing a video signal, the apparatus comprising:

a demultiplexer receiving a scalable video signal including a base layer and an enhancement layer;

a base layer decoder decoding pictures of the base layer; and

an enhancement layer decoder generating an interlayer reference picture list for interlayer prediction by using the pictures of the base layer and decoding pictures of the enhancement layer by using the interlayer reference picture list,

wherein when a current picture of the enhancement layer is a random access decodable leading (RADL) picture, an interlayer reference picture list corresponding to the current picture does not include a random access skipped leading (RASL) picture.