US 11,906,895 B2
Method and system for blending images captured under different strobe conditions
Po-Yu Yeh, Hsinchu (TW); Shao-Hsiang Chang, Hsinchu (TW); Chia-Ping Chen, Hsinchu (TW); Keh-Tsong Li, Hsinchu (TW); and Gang-Wei Fan, Hsinchu (TW)
Assigned to MEDIATEK INC., Hsin-Chu (TW)
Filed by MEDIATEK INC., Hsin-Chu (TW)
Filed on Sep. 24, 2021, as Appl. No. 17/483,820.
Claims priority of provisional application 63/087,926, filed on Oct. 6, 2020.
Prior Publication US 2022/0107550 A1, Apr. 7, 2022
Int. Cl. H04N 5/235 (2006.01); G03B 7/16 (2021.01); G03B 15/05 (2021.01); H04N 23/74 (2023.01)
CPC G03B 7/16 (2013.01) [G03B 15/05 (2013.01); H04N 23/74 (2023.01)] 18 Claims
OG exemplary drawing
 
1. An image capture method for flash photography, comprising:
capturing at least one first image while a strobe device is operating under a first strobe intensity setting for emitting main flash;
capturing at least one second image while the strobe device is operating under a second strobe intensity setting, wherein the second strobe intensity setting is different from the first strobe intensity setting; and
generating an output image by blending the at least one first image and the at least one second image;
before the at least one first image and the at least one second image are captured:
capturing at least one third image while the strobe device is operating under a third strobe intensity setting for emitting pre-flash;
capturing at least one fourth image while the strobe device is operating under a fourth strobe intensity setting, wherein the fourth strobe intensity setting is different from the third strobe intensity setting; and
generating a map according to image statistics of the at least one third image and image statistics of the at least one fourth image, wherein the map records image characteristics at different pixel locations;
wherein generating the output image by blending the at least one first image and the at least one second image comprises:
blending the at least one first image and the at least one second image according to the map.