公开(公告)号：US20230315201A1

公开(公告)日：2023-10-05

申请号：US18145828

申请日：2022-12-22

Applicant: Apple Inc.

Inventor： Tom Sengelaub ,  Emanuele Mandelli ,  Aleksandr M Movshovich ,  Martin Haller ,  Hao Qin ,  Hua Gao

IPC: G06F3/01 ,  G06V10/141 ,  G06V10/60 ,  G02B27/01 ,  G06T5/50

CPC classification number: G06F3/013 ,  G02B27/0172 ,  G06T5/50 ,  G06V10/141 ,  G06V10/60 ,  G06T2207/20221

Abstract: Methods and apparatus for stray light mitigation in optical systems that include two or more illumination sources (e.g., point light sources such as light-emitting diodes (LEDs)) that illuminate an object to be imaged, and a camera configured to capture images of light from the point light sources reflected by the object when illuminated. To mitigate “occlusions” or artifacts caused by, for example, stray light or reflections of the illumination sources off of other components of the system, multiple images of the object are captured with different groups of the illumination sources enabled. The captured images can then be processed and merged to generate an output image with the occlusions or artifacts caused by stray light or reflections mitigated or eliminated.

公开(公告)号：US20240394921A1

公开(公告)日：2024-11-28

申请号：US18691427

申请日：2022-09-22

Applicant: Apple Inc.

Inventor： Tushar Gupta ,  Arthur Y Zhang ,  Aleksandr M Movshovich ,  Ray L Chang ,  Fletcher R Rothkopf

IPC: G06T7/80 ,  G03B17/56 ,  G06T5/20 ,  H04N23/80

Abstract: Fiducial patterns that include sub-patterns of dot-like markers are generated or applied on or in transparent glass or plastic material, for example an optical element such as a cover glass or lens attachment. A camera may capture multiple images through the glass or plastic element that include diffraction patterns caused by the fiducial patterns. The diffraction patterns from multiple images may be processed and analyzed to extract information including but not limited to centroids of the sub-patterns of the fiducial patterns. This information may, for example, be used to estimate location of the fiducial 10 patterns with respect to the camera, and thus to estimate pose of the glass or lens element with respect to the camera. Information such as serial numbers and prescriptions can also be encoded in the fiducial patterns and extracted from the respective diffraction patterns.