US 12,075,081 B2
Super-resolution loop restoration
Urvang Joshi, Mountain View, CA (US); Debargha Mukherjee, Cupertino, CA (US); and Andrew Simpson, San Francisco, CA (US)
Assigned to GOOGLE LLC, Mountain View, CA (US)
Filed by Google LLC, Mountain View, CA (US)
Filed on Jan. 17, 2023, as Appl. No. 18/155,224.
Application 18/155,224 is a continuation of application No. 16/836,078, filed on Mar. 31, 2020, granted, now 11,558,631.
Application 16/836,078 is a continuation of application No. 16/018,105, filed on Jun. 26, 2018, granted, now 10,645,409.
Prior Publication US 2023/0179789 A1, Jun. 8, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/50 (2014.01); H04N 7/01 (2006.01); H04N 19/117 (2014.01); H04N 19/176 (2014.01); H04N 19/184 (2014.01); H04N 19/61 (2014.01)
CPC H04N 19/50 (2014.11) [H04N 7/0117 (2013.01); H04N 19/117 (2014.11); H04N 19/176 (2014.11); H04N 19/184 (2014.11); H04N 19/619 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A non-transitory computer-readable storage medium having stored thereon an encoded bitstream, wherein the encoded bitstream is configured for decoding by operations comprising:
decoding a flag indicating whether an image was encoded using a super-resolution mode, the image encoded at a first resolution;
decoding, responsive to the flag indicating that the image was encoded using the super-resolution mode, bits indicating an amount of scaling of the image;
decoding the image to obtain a reconstructed image at the first resolution;
upscaling, using the amount of scaling, the reconstructed image to a second resolution higher than the first resolution to obtain an upscaled reconstructed image;
decoding loop restoration parameters; and
applying loop restoration filtering to the upscaled reconstructed image using the loop restoration parameters to obtain a loop restored image at the second resolution.