公开(公告)号：US20210374906A1

公开(公告)日：2021-12-02

申请号：US17056550

申请日：2019-02-18

Applicant: Masayoshi Doshida ,  SONY CORPORATION

Inventor： LEGONG SUN ,  YASUTAKA HIRASAWA ,  YUHI KONDO ,  YING LU ,  TUO ZHUANG

IPC: G06T3/40 ,  G06T7/90 ,  G06T7/60

Abstract: A normal candidate information generation unit 31 of an information processor 30 generates normal candidate information for each pixel indicating, for example, a zenith angle, or an azimuth angle, or a zenith angle and an azimuth angle, on the basis of a polarization image in a plurality of polarization directions obtained by a polarization imaging unit 20. The in-plane pixel selection unit 32 selects a plurality of pixels indicating the plane to be observed in the polarization image. A normal calculation unit 33 calculates a normal of the plane to be observed on the basis of the normal candidate information of the pixels selected by the in-plane pixel selection unit 32. For example, the normal calculation unit 33 calculates the normal of the plane to be observed on the basis of a line-of-sight axis indicating a light beam direction from the plane to be observed corresponding to the pixels selected by the in-plane pixel selection unit 32 toward the polarization imaging unit 20 and the zenith angles of the selected pixels.

公开(公告)号：US20210152748A1

公开(公告)日：2021-05-20

申请号：US17044533

申请日：2019-01-15

Applicant: SONY CORPORATION

Inventor： YING LU ,  YASUTAKA HIRASAWA ,  YUHI KONDO ,  TUO ZHUANG ,  LEGONG SUN

IPC: H04N5/243 ,  H04N5/235 ,  H04N17/00 ,  G06T7/80 ,  H04N5/225 ,  G01J4/04 ,  G01N21/21

Abstract: A polarization imaging unit 20 acquires a polarization image using a lens. In a parameter storage unit 32 of an information processing unit 30, parameters related to a change in polarization state due to the lens which are estimated in advance from polarization state information acquired by imaging a light source in a predetermined polarization state using the lens and polarization state information indicating the polarization state of the light source, for example, change parameters indicating the change in polarization state due to the lens or correction parameters for correcting the change in polarization state due to the lens are stored. A polarization state correction unit 33 of the information processing unit 30 corrects the change in polarization state due to the lens, using the parameters stored in advance in the parameter storage unit 32.