US 12,267,604 B2
Image acquisition apparatus including a plurality of image sensors, and electronic apparatus including the image acquisition apparatus
Woo-Shik Kim, Seongnam-si (KR); Younggeun Roh, Seoul (KR); and Inhwan Ryu, Suwon-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Jun. 3, 2022, as Appl. No. 17/831,956.
Claims priority of application No. 10-2021-0113981 (KR), filed on Aug. 27, 2021.
Prior Publication US 2023/0066267 A1, Mar. 2, 2023
Int. Cl. H04N 25/13 (2023.01); H04N 9/73 (2023.01); H04N 23/45 (2023.01); H04N 23/88 (2023.01)
CPC H04N 25/13 (2023.01) [H04N 9/73 (2013.01); H04N 23/45 (2023.01); H04N 23/88 (2023.01)] 21 Claims
OG exemplary drawing
 
1. An image acquisition apparatus comprising:
a first image sensor configured to acquire a first image based on a first wavelength band;
a second image sensor having more channels than the first image sensor and configured to acquire a second image based on a second wavelength band comprising the first wavelength band; and
a processor configured to:
register the first image and the second image, which are respectively output from the first image sensor and the second image sensor;
obtain a registration image based on the first image and the second image; and
perform color conversion on the registration image by using an illumination value estimated from the second image,
wherein the processor is further configured to:
divide the first image into one or more first regions and divide the second image into one or more second regions respectively corresponding to the one or more first regions;
estimate a respective illumination value for each of the one or more second regions;
perform the color conversion on each of the one or more first regions by using the estimated illumination values, and
when a difference between illumination values respectively estimated for adjacent second regions of the one or more second regions is greater than or equal to a first threshold value, adjust any one of the illumination values of the adjacent second regions to adjust the difference to be less than the first threshold value.