US 12,136,140 B2
Noise synthesis for digital images
Harshad Kadu, Santa Clara, CA (US); Bharath Vishwanath, San Jose, CA (US); Guan-Ming Su, Fremont, CA (US); and Samir N. Hulyalkar, Los Gatos, CA (US)
Assigned to DOLBY LABORATORIES LICENSING CORPORATION, San Francisco, CA (US)
Appl. No. 17/786,906
Filed by DOLBY LABORATORIES LICENSING CORPORATION, San Francisco, CA (US)
PCT Filed Dec. 21, 2020, PCT No. PCT/US2020/066366
§ 371(c)(1), (2) Date Jun. 17, 2022,
PCT Pub. No. WO2021/127628, PCT Pub. Date Jun. 24, 2021.
Claims priority of provisional application 62/950,466, filed on Dec. 19, 2019.
Claims priority of application No. 19218144 (EP), filed on Dec. 19, 2019.
Prior Publication US 2023/0050950 A1, Feb. 16, 2023
Int. Cl. G06T 9/00 (2006.01); G06T 11/00 (2006.01); H04N 5/265 (2006.01); G06T 11/60 (2006.01)
CPC G06T 11/00 (2013.01) [G06T 9/00 (2013.01); G06T 9/007 (2013.01); H04N 5/265 (2013.01); G06T 11/60 (2013.01); G06T 2210/52 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A computer-based method for creating a synthesized noise image for a digital image, the method comprising:
providing a plurality of noise block patterns;
initializing a noise image;
generating a probability image comprising randomly generated probability values at each pixel of the probability image,
comparing each probability value in the probability image with a threshold criterion;
if the probability value satisfies the threshold criterion, selecting a noise block pattern from the plurality of noise block patterns, the noise block pattern having an anchor point; and
if the probability value satisfies the threshold criterion, creating synthesized noise image by placing the noise block pattern in the noise image such that the anchor point corresponds to a pixel in the probability image that meets the threshold criterion.