US 11,871,123 B2
High dynamic range image synthesis method and electronic device
Yu Zhang, Shenzhen (CN)
Assigned to HONOR DEVICE CO., LTD., Guangdong (CN)
Appl. No. 17/778,195
Filed by HONOR DEVICE CO., LTD., Shenzhen (CN)
PCT Filed Mar. 30, 2021, PCT No. PCT/CN2021/083986
§ 371(c)(1), (2) Date May 19, 2022,
PCT Pub. No. WO2021/218536, PCT Pub. Date Nov. 4, 2021.
Claims priority of application No. 202010352303.5 (CN), filed on Apr. 28, 2020.
Prior Publication US 2022/0417414 A1, Dec. 29, 2022
Int. Cl. H04N 23/741 (2023.01)
CPC H04N 23/741 (2023.01) 20 Claims
OG exemplary drawing
 
1. A high dynamic range image synthesis method, wherein the method comprises:
obtaining, based on a high dynamic range (HDR) photographing operation, a plurality of images with different depths of field in a current photographing scene, including generating at least one foreground depth-of-field image based on an initial foreground image from the plurality of images, and generating at least one background depth-of-field image based on an initial background image from the plurality of images, wherein each of the plurality of images, and each of the at least one foreground depth-of-field image, and each of the at least one background depth-of-field image has a respective exposure value;
generating full depth of field images, including, for each of the full depth of field images, synthesizing those of the plurality of images that have a same exposure value, to generate a respective one of the full depth-of-field images; and
synthesizing the full depth-of-field images with a plurality of exposure values by using an HDR algorithm, to generate a high dynamic range image.