US 12,002,186 B1
Surround area detection and blending for image filtering
Tsung-Wei Huang, Sunnyvale, CA (US); and Guan-Ming Su, Fremont, CA (US)
Assigned to Dolby Laboratories Licensing Corporation, San Francisco, CA (US)
Appl. No. 18/568,104
Filed by Dolby Laboratories Licensing Corporation, San Francisco, CA (US)
PCT Filed Jun. 1, 2022, PCT No. PCT/US2022/031795
§ 371(c)(1), (2) Date Dec. 7, 2023,
PCT Pub. No. WO2022/260907, PCT Pub. Date Dec. 15, 2022.
Claims priority of provisional application 63/209,602, filed on Jun. 11, 2021.
Claims priority of application No. 21178935 (EP), filed on Jun. 11, 2021.
Int. Cl. G06T 5/20 (2006.01); G06T 5/40 (2006.01); G06T 5/70 (2024.01); G06V 10/764 (2022.01)
CPC G06T 5/20 (2013.01) [G06T 5/40 (2013.01); G06T 5/70 (2024.01); G06V 10/764 (2022.01); G06T 2207/20192 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A method for detecting a non-active area in an image, the method comprising:
calculating a histogram of a predefined area located at a boundary of the image;
finding a peak and a width of the peak of the histogram;
based on the peak and the width of the peak of the histogram, classifying a presence of the non-active area in the image, thereby generating a peak detection score;
based on a ratio of the pixels that belong to the peak on a predefined minimum possible non-active areas at the predefined area located at the boundary of the image, classifying the presence of the non-active area in the image, thereby generating a boundary detection score;
generating a total score based on a combination of the peak and the boundary detection scores, and
detecting the presence of the non-active area based on the total score.