SIGNALING SCALABILITY INFORMATION IN A PARAMETER SET
A method for signaling scalability information in a video parameter set is described. A modified video parameter set extension includes a scalability mask that is used in combination with a scalability dimension. The scalability mask indicates whether or not a scalability dimension is present in each layer.
1 . (canceled)
2 . An electronic device for decoding a video parameter set comprising a receiving circuit configured to:
receive said video parameter set; and
receive a dependency flag indicating whether a first layer of a video depends on a second layer of said video; wherein said dependency flag with a value of 0 specifies that said first layer is not a direct reference layer for said second layer, and said dependency flag with a value of 1 specifies that said first layer is a direct reference layer for said second layer.
3 . The electronic device of claim 2 , wherein the number of direct reference layers and a reference layer index are signaled only when said first layer is a dependent layer.
4 . The electronic device of claim 2 , wherein said dependency flag includes a pair of indexes [i][j], where i is a first index value and j is a second index value.
5 . The electronic device of claim 2 , wherein said dependency flag use 1 bit for signaling.