US 12,261,992 B2
Image signal representing a scene
Bartholomeus Wilhelmus Damianus Van Geest, Veldhoven (NL); and Bart Kroon, Eindhoven (NL)
Assigned to Koninklijke Philips N.V., Eindhoven (NL)
Appl. No. 17/437,938
Filed by KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
PCT Filed Feb. 14, 2020, PCT No. PCT/EP2020/053981
§ 371(c)(1), (2) Date Sep. 10, 2021,
PCT Pub. No. WO2020/187506, PCT Pub. Date Sep. 24, 2020.
Claims priority of application No. 19163678 (EP), filed on Mar. 19, 2019.
Prior Publication US 2022/0174259 A1, Jun. 2, 2022
Int. Cl. H04N 13/282 (2018.01); G06T 5/50 (2006.01); G06T 15/20 (2011.01); H04N 13/243 (2018.01); H04N 13/275 (2018.01)
CPC H04N 13/282 (2018.05) [G06T 5/50 (2013.01); G06T 15/205 (2013.01); H04N 13/243 (2018.05); H04N 13/275 (2018.05)] 19 Claims
OG exemplary drawing
 
1. An apparatus for generating an image signal, the apparatus comprising:
a receiver circuit,
wherein the receiver circuit is arranged to receive a plurality of source images, and
wherein the plurality of source images represent a scene from at least two view poses,
a combined image generator circuit,
wherein the combined image generator circuit is arranged to generate a plurality of combined images from the plurality source images,
wherein each combined image is derived from at least two source images,
wherein each combined image comprises a plurality of pixels,
wherein each pixel of the plurality of pixels represents the scene for a ray pose of a plurality of ray poses, and
wherein a ray pose for a pixel represents a pose for a ray in a view direction for the pixel and from a view position for the pixel;
an evaluator circuit wherein the evaluator circuit is arranged to determine a prediction quality measure for at least one element of at least a first source image of the plurality of source images,
wherein the at least one element comprises at least one pixel,
wherein the prediction quality measure for the at least one element of the first source image is inversely indicative of a difference between pixel values in the at least one first element of the first source image and predicted pixel values for pixels in the at least one first element, and
wherein the predicted pixel values result from a prediction of pixels in a corresponding at least one element of at least two combined images;
a determiner circuit,
wherein the determiner circuit is arranged to determine low-quality segments of the at least one source image,
wherein the low-quality segments comprise elements of the at least one source image for which the prediction quality measure is below a threshold; and
an image signal generator circuit,
wherein the image signal generator circuit is arranged to generate an image signal,
wherein the image signal comprises first image data and second image data,
wherein the first image data represents the combined images,
wherein the second image data represent the low-quality segments, and
wherein an encoding of the combined images to form the first image data differs from an encoding of the low-quality segments to form the second image data.