Systems and methods for signaling picture information in video coding
This disclosure relates to video coding and more particularly to techniques for signaling picture information for coded video. A method for the techniques comprises: receiving a slice header syntax structure; determining whether the slice header syntax structure includes a picture header syntax structure; and in a case where the slice header syntax structure includes the picture header syntax structure, parsing a first syntax element specifying a picture parameter set identifier from the picture header syntax structure and parsing a second syntax element specifying a picture order count from the picture header syntax structure.
1. A method of decoding picture information for decoding video data, the method comprising:
receiving picture header syntax structure, wherein
(i) the picture header syntax structure is conditionally included in a slice header syntax structure based on a value of a flag,
(ii) the picture header syntax structure is distinct from a slice header syntax structure such that when the picture header syntax structure is not included in the slice header syntax structure, the picture header syntax structure is included in a non-video coding layer network abstraction layer unit,
(ii) syntax elements included in the picture header syntax structure are distinct from syntax elements included in a picture parameter set syntax structure, and
(iv) the picture header syntax structure includes:
a first syntax element specifying a value of a picture parameter set identifier for a picture parameter set in use,
a second syntax element specifying whether a current picture is never used as a reference picture, and
a third syntax element specifying a picture order count least significant bits information for the current picture.
2. A device comprising one or more processors configured to:
receive picture header syntax structure, wherein:
(i) the picture header syntax structure is conditionally included in a slice header syntax structure based on a value of a flag,
(ii) the picture header syntax structure is distinct from a slice header syntax structure such that when the picture header syntax structure is not included in the slice header syntax structure, the picture header syntax structure is included in a non-video coding layer network abstraction layer unit, and
(iii) syntax elements included in the picture header syntax structure therein are distinct from syntax elements included in a picture parameter set syntax structure, and
(iv) the picture header syntax structure includes:
a first syntax element specifying a value of a picture parameter set identifier for a picture parameter set in use,
a second syntax element specifying whether a current picture is never used as a reference picture, and
a third syntax element specifying a picture order count least significant bits information for the current picture.
3. The device of claim 2 , wherein the device is a video decoder.