US 9,813,724 B2
Scalable video coding using reference and scaled reference layer offsets
Koohyar Minoo, San Diego, CA (US); David M. Baylon, San Diego, CA (US); and Ajay K. Luthra, San Diego, CA (US)
Assigned to ARRIS Enterprises LLC, Suwanee, GA (US)
Filed by ARRIS Enterprises, Inc., Suwanee, GA (US)
Filed on Mar. 18, 2015, as Appl. No. 14/661,867.
Claims priority of provisional application 61/955,123, filed on Mar. 18, 2014.
Prior Publication US 2015/0312582 A1, Oct. 29, 2015
Int. Cl. H04N 11/02 (2006.01); H04N 19/33 (2014.01); H04N 19/70 (2014.01); H04N 19/80 (2014.01); H04N 19/59 (2014.01); H04N 19/167 (2014.01); H04N 19/182 (2014.01); H04N 19/187 (2014.01)
CPC H04N 19/33 (2014.11) [H04N 19/167 (2014.11); H04N 19/182 (2014.11); H04N 19/187 (2014.11); H04N 19/59 (2014.11); H04N 19/70 (2014.11); H04N 19/80 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A video coding method for deriving a current picture implemented in a system for scalable video coding, said method comprising:
determining whether scaled offsets and phase shifts are present in one or more syntax structures at a picture level;
parsing the one or more picture level syntax structures to determine the scaled offsets and phase shifts for deriving an inter-layer reference picture, wherein the scaled offsets and phase shifts signaled in syntax elements at the picture level are adaptive per picture and applicable to all slices in the inter-layer reference picture for which they are signaled;
deriving the inter-layer reference picture from a decoded reference picture using the scaled offsets and phase shifts, wherein the decoded reference picture is in a first coding layer in a plurality of coding layers and the inter-layer reference picture is in a second coding layer in the plurality of coding layers,
the derivation including a prediction of a value at a pixel location in the second coding layer based on a corresponding value at a pixel location in the first coding layer in the plurality of coding layers;
the derivation including use of the scaled offsets, that specify offsets between a first picture sample in the inter-layer reference picture in the second coding layer that is collocated with a picture sample of the decoded reference picture in the first coding layer and a second picture sample of the inter-layer reference picture in the second coding layer, the scaled offsets between said first and second picture samples in the inter-layer reference picture for adjusting the predicted value pixel location; and
deriving the current picture using the inter-layer reference picture including the predicted value at the adjusted predicted value pixel location.