US 12,457,318 B2
Method, encoder, and display device for representing a three-dimensional scene and depth-plane data thereof
Robin Atkins, Vancouver (CA)
Assigned to DOLBY LABORATORIES LICENSING CORPORATION, San Francisco, CA (US)
Appl. No. 18/566,032
Filed by DOLBY LABORATORIES LICENSING CORPORATION, San Francisco, CA (US)
PCT Filed Jun. 2, 2022, PCT No. PCT/US2022/031915
§ 371(c)(1), (2) Date Nov. 30, 2023,
PCT Pub. No. WO2022/256497, PCT Pub. Date Dec. 8, 2022.
Claims priority of provisional application 63/195,898, filed on Jun. 2, 2021.
Claims priority of application No. 21177381 (EP), filed on Jun. 2, 2021.
Prior Publication US 2024/0291957 A1, Aug. 29, 2024
Int. Cl. H04N 13/395 (2018.01); G06T 5/50 (2006.01); H04N 13/351 (2018.01); H04N 13/00 (2018.01)
CPC H04N 13/395 (2018.05) [G06T 5/50 (2013.01); H04N 13/351 (2018.05); G06T 2207/20216 (2013.01); H04N 2013/0081 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for reducing the number of depth planes of a three-dimensional scene stored as a three-dimensional data set, comprising:
receiving a lateral offset Δx, perpendicular to a first viewing direction, and between a first vantage point and a second vantage point, wherein the lateral offset Δx is the minimum distance an observer must make to perceive a change in depth between a first object at a proximal depth D along the first viewing direction and a second object at an adjacent distal depth (D+ΔD) along the first viewing direction;
receiving a visual angle Δϕ representing an angular visual acuity of the observer;
receiving the three-dimensional data set that includes a quantity S transverse cross-sectional images, each of which corresponding to a depth-plane depth and representing a respective transverse cross-section of the three-dimensional scene at a respective scene-depth along the first viewing direction relative to the first vantage point;
determining a quantity P depth-plane depths along the first viewing direction relative to the first vantage point, a separation ΔD between each proximal depth D and the adjacent distal depth (D+ΔD) of the P depth-plane depths being a just-noticeable difference determined by (i) the proximal depth D, (ii) the lateral offset Δx, and (iii) the visual angle Δϕ subtended by separation ΔD when viewed from the second vantage point, wherein the quantity P is smaller than the quantity S, wherein

OG Complex Work Unit Math
generating, from the received three-dimensional data set, a proxy three-dimensional data set that includes P proxy images by, for each depth-plane depth of the P depth-plane depths:
generating a proxy image of the P proxy images from at least one cross-sectional image of the quantity S transverse cross-sectional images.