US 11,659,151 B2
Apparatus, a method and a computer program for volumetric video
Payman Aflaki, Tampere (FI); and Sebastian Schwarz, Unterhaching (DE)
Assigned to Nokia Technologies Oy, Espoo (FI)
Filed by Nokia Technologies Oy, Espoo (FI)
Filed on Apr. 24, 2020, as Appl. No. 16/857,838.
Claims priority of application No. 20195351 (FI), filed on Apr. 30, 2019.
Prior Publication US 2020/0351484 A1, Nov. 5, 2020
Int. Cl. H04N 13/161 (2018.01); G06T 7/11 (2017.01); G06T 7/41 (2017.01); H04N 13/388 (2018.01); H04N 19/46 (2014.01); H04N 19/597 (2014.01)
CPC H04N 13/161 (2018.05) [G06T 7/11 (2017.01); G06T 7/41 (2017.01); H04N 13/388 (2018.05); H04N 19/46 (2014.11); H04N 19/597 (2014.11)] 24 Claims
OG exemplary drawing
 
1. An apparatus comprising:
at least one processor; and
at least one non-transitory memory including computer program code; wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus to at least:
obtain one or more patches comprising information of an object in a three-dimensional scene;
form an attribute parameter set on the basis of visual properties of a surface of the object in the three-dimensional scene;
wherein the attribute parameter set is formed to describe a smoothness or roughness of the surface of the object;
wherein the description of the smoothness or roughness of the surface of the object comprises a value that at least partially indicates whether a difference between a first surface normal of a first region of the object and a second surface normal of a second region of the object is within a threshold;
form an indication that the attribute parameter set relates to visual properties of the surface of the object;
signal the indication that the attribute parameter set relates to visual properties of the surface of the object at least partially within at least one syntax element that indicates that the attribute parameter set is formed to describe the smoothness or roughness of the surface of the object; and
form an indication on a range for which the attribute parameter set is valid.