公开(公告)号：US20250159122A1

公开(公告)日：2025-05-15

申请号：US18836304

申请日：2022-03-15

Applicant: Hitachi Astemo, Ltd.

Inventor： Takeshi NAGASAKI ,  Haruki MATONO ,  Takuma OSATO ,  Hiroki MOIZUMI ,  Keisuke IWASAKI ,  Masayuki KOBAYASHI

IPC: H04N13/122 ,  G06V10/60 ,  H04N13/204

Abstract: An EXTERNAL ENVIRONMENT RECOGNITION DEVICE that reduces an influence on a ranging error caused by a temporal change of an optical system/imaging system is provided by focusing on characteristics (individual difference) of the optical system/imaging system of an in-vehicle stereo camera device. Thus, the EXTERNAL ENVIRONMENT RECOGNITION DEVICE includes a parallax calculation unit that calculates parallax by images captured by an in-vehicle camera device including a plurality of cameras, a ranging unit that obtains a distance to an object outside a vehicle by the parallax, a storage unit in which response characteristics and luminance characteristics of each lens of the plurality of cameras are recorded, a ranging correction necessity determination unit that determines whether the distance to the object is necessary to be corrected using the response characteristics and the luminance characteristics of the lens; and a ranging correction unit that corrects the distance to the object based on the response characteristics and the luminance characteristics of the lens when it is determined that the correction is necessary.