US 12,086,959 B2
Image processing apparatus capable of ensuring wide dynamic range while reducing strangeness generated due to moving body, method of controlling same, and image capturing apparatus
Kazuki Sato, Kanagawa (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Oct. 19, 2022, as Appl. No. 18/047,888.
Claims priority of application No. 2021-173014 (JP), filed on Oct. 22, 2021.
Prior Publication US 2023/0131477 A1, Apr. 27, 2023
Int. Cl. G06T 5/50 (2006.01); G06T 7/20 (2017.01); G06V 10/60 (2022.01); G06V 10/74 (2022.01)
CPC G06T 5/50 (2013.01) [G06T 7/20 (2013.01); G06V 10/60 (2022.01); G06V 10/761 (2022.01); G06T 2207/10024 (2013.01); G06T 2207/10144 (2013.01); G06T 2207/20221 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An image processing apparatus, comprising:
at least one processor; and
a memory coupled to the at least one processor, the memory having instructions that, when executed by the processor, perform the operations as:
an acquisition unit configured to acquire a plurality of images amplified with different gains, respectively, for each of exposure operations with different exposure amounts;
a determination unit configured to determine whether or not there is a moving body having moved between images acquired for each of exposure operations with different exposure amounts; and
a selection unit configured to select images to be used for image combination out of the plurality of acquired images, based on a result of determination performed by the determination unit,
wherein the acquisition unit acquires a first image amplified with a first gain and a second image amplified with a second gain by an exposure operation with a first exposure amount, and acquires a third image amplified with the first gain and a fourth image amplified with the second gain by an exposure operation with a second exposure amount which is different from the first exposure amount, and
wherein in a case where it is determined that the moving body having moved between the first image and the third image exists, the selection unit selects the first image and the second image, or selects the third image and the fourth image, whereas in a case where it is determined that the moving body does not exist between the first image and the third image, the selection unit selects at least one of the first image and the second image, and at least one of the third image and the fourth image.