US 12,395,745 B2
Image processing apparatus and method, and image capturing apparatus
Takuya Nabeshima, Kanagawa (JP); Takenori Kobuse, Kanagawa (JP); Takahiro Kamikura, Tokyo (JP); Shigeharu Aoki, Kanagawa (JP); Kento Watanabe, Kanagawa (JP); and Daisuke Higuchi, Osaka (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jan. 10, 2024, as Appl. No. 18/408,905.
Application 18/408,905 is a continuation of application No. PCT/JP2022/022948, filed on Jun. 7, 2022.
Claims priority of application No. 2021-115147 (JP), filed on Jul. 12, 2021.
Prior Publication US 2024/0147080 A1, May 2, 2024
Int. Cl. H04N 23/76 (2023.01); G06T 5/40 (2006.01); G06T 7/12 (2017.01); H04N 23/71 (2023.01); H04N 23/741 (2023.01); H04N 23/81 (2023.01); H04N 23/84 (2023.01); H04N 25/11 (2023.01); H04N 25/13 (2023.01)
CPC H04N 23/76 (2023.01) [G06T 5/40 (2013.01); G06T 7/12 (2017.01); H04N 23/71 (2023.01); H04N 23/741 (2023.01); H04N 23/81 (2023.01); H04N 23/84 (2023.01); G06T 2207/10024 (2013.01); G06T 2207/20021 (2013.01); G06T 2207/20192 (2013.01); H04N 25/11 (2023.01); H04N 25/134 (2023.01)] 24 Claims
OG exemplary drawing
 
1. An image processing apparatus comprising one or more processors and/or circuitry which function as:
an input unit that inputs an image signal generated by photoelectrically converting a plurality of polarized lights with different polarization angles from each other;
a first processing unit that finds, for each set of a plurality of image signals corresponding to the polarized lights, a maximum value of polarization intensities of polarization components of the plurality of image signals and a polarization angle at which the maximum value of the polarization intensities is obtained;
a setting unit that finds a target area to which polarization reduction is to be applied based on the image signal and sets a statistical area, included in the target area, for taking statistics;
a second processing unit that finds a representative intensity which is a mode of the polarization intensities and a representative angle which is a mode of pluralization angles of the sets included in the statistical area; and
a correction unit that performs first correction processing for correcting each image signal of the sets included in the target area using the representative intensity and the representative angle according to the polarization angle of the each image signal.