公开(公告)号：US11483479B1

公开(公告)日：2022-10-25

申请号：US17484447

申请日：2021-09-24

Applicant: Amazon Technologies, Inc.

Inventor： Jingqiang Li ,  Georgios Skolianos ,  Shuai Yue

IPC: H04N5/232

Abstract: When a lens assembly of an imaging device is subject to impacts, vibrations or other movements, and an optical axis of a lens assembly is varied as a result of the movements, blurring or pixel shifts may be reduced or eliminated at a targeted location within an image plane by shifting a lens of the lens assembly by a distance calculated based on an angle corresponding to the selected location, an angular difference between orientations of the optical axis, and a focal length of the imaging device. If the distance would result in a pixel shift at a center of the image plane in excess of a maximum allowable pixel shift, an alternate distance may be calculated based on the maximum allowable pixel shift, the angular difference between orientations of the optical axis, and the focal length of the imaging device.

公开(公告)号：US12277794B1

公开(公告)日：2025-04-15

申请号：US17303623

申请日：2021-06-03

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Baomin Wang ,  Umer Shahid ,  Tianyi Wang ,  Georgios Skolianos ,  Rui Zhao ,  Manoj Aggarwal ,  Gerard Guy Medioni

IPC: G06V10/141 ,  G06V10/143 ,  G06V10/56 ,  G06V40/10

Abstract: An input device determines presence of an actual user, instead of an artifact, by using multi-wavelength reflectance spectroscopy. Light sources are operated to illuminate an object with different colors of light at different times. A detector determines, at those different times, intensity data indicative of intensity light of these different colors as reflected from the object. The intensity data is processed to determine whether the object is part of a user or is an artifact. For example, if the object is deemed to be a user, biometric input may be acquired. The biometric input may then be processed to identify the user. The input device may be used at various locations, such as at an entry portal, point of sale, and so forth.