Multi-layer video coding method for random access and device therefor, and multi-layer video decoding method for random access and device therefor
AssigneeSamsung Electronics Co., Ltd.
InventorsByeong-doo CHOI, Min-woo PARK, Ho-cheon WEY, Jae-won YOON, Jin-young LEE, Yong-jin CHO
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Abstract
Provided is a video decoding method including determining whether a random access point (RAP) picture is positioned in an enhancement layer; determining whether a random access skipped leading (RASL) picture related to the RAP picture is output; and if the RAP picture is positioned in the enhancement layer and the RASL picture is determined not to be output, activating a SPS corresponding to the RAP picture when the RAP picture that is not at a start point of a CVS is decoded.
Claims14
A video decoding method comprising:
- determining whether a random access point (RAP) picture is positioned in an enhancement layer;
- determining whether a random access skipped leading (RASL) picture related to the RAP picture is output;
- and
- if the RAP picture is positioned in the enhancement layer and the RASL picture is determined not to be output, activating a sequence parameter set (SPS) corresponding to the RAP picture when the RAP picture that is not at a start point of a coded video sequence (CVS) is decoded.
A video encoding method comprising;
- encoding an image as a random access point (RAP) picture, wherein the image is from among pictures comprised in an enhancement layer and is not at a start point of a coded video sequence (CVS);
- and
- when a RASL picture related to the RAP picture is not output, encoding a sequence parameter set (SPS) that is activated in correspondence to decoding of the RAP picture.
A video decoding apparatus comprising:
- a receiver configured to receive a bitstream;
- and
- an inter-layer decoder configured to activating an SPS corresponding to a RAP picture when the RAP picture that is not at a start point of a CVS is decoded, wherein the RAP picture is positioned in an enhancement layer and a RASL picture related to the RAP picture is not output.
A video encoding apparatus comprising:
- an inter-layer encoder configured to encode an image as a RAP picture, wherein the image is from among pictures comprised in an enhancement layer and is not at a start point of a CVS, and
- when a RASL picture related to the RAP picture is not output, the inter-layer encoder configured to encode a SPS that is activated in correspondence to decoding of the RAP picture;
- and
- an output unit configured to generate a bitstream for transmitting the encoded data.
Dependencies are inferred from the claim text.