US 12,244,831 B2
Method and device for picture encoding and decoding
Edouard Francois, Bourg des Comptes (FR); Fabrice Leleannec, Mouazé (FR); and Tangi Poirier, Thorigné-Fouillard (FR)
Assigned to InterDigital VC Holdings, Inc., Wilmington, DE (US)
Filed by InterDigital VC Holdings, Inc., Wilmington, DE (US)
Filed on Apr. 17, 2024, as Appl. No. 18/637,693.
Application 18/637,693 is a continuation of application No. 17/434,152, granted, now 11,991,373, previously published as PCT/US2020/019626, filed on Feb. 25, 2020.
Claims priority of application No. 19305236 (EP), filed on Feb. 28, 2019; application No. 19305281 (EP), filed on Mar. 11, 2019; application No. 19305326 (EP), filed on Mar. 18, 2019; application No. 19305373 (EP), filed on Mar. 25, 2019; application No. 19305465 (EP), filed on Apr. 10, 2019; application No. 19305591 (EP), filed on May 9, 2019; application No. 19305633 (EP), filed on May 17, 2019; application No. 19305684 (EP), filed on May 29, 2019; and application No. 19305904 (EP), filed on Jul. 2, 2019.
Prior Publication US 2024/0314337 A1, Sep. 19, 2024
Int. Cl. H04N 19/186 (2014.01); H04N 19/119 (2014.01); H04N 19/176 (2014.01)
CPC H04N 19/186 (2014.11) [H04N 19/119 (2014.11); H04N 19/176 (2014.11)] 15 Claims
OG exemplary drawing
 
1. A scaling method comprising, for a chroma block of a picture inside a single non-overlapping rectangular area:
determining a luma block in a non-overlapping rectangular area co-located with a position of a corresponding chroma block;
determining a scaling factor based on an average of reconstructed luma samples which belong to the bottom line and the right column of luma samples which respectively belong to the top and left neighboring luma blocks in non-overlapping rectangular areas neighboring the luma block; and
scaling the chroma block residual according to the scaling factor.