公开(公告)号：US20220364849A1

公开(公告)日：2022-11-17

申请号：US17688933

申请日：2022-03-08

Applicant: Apple Inc.

Inventor： Shay Yosub ,  Assaf Avraham ,  Jawad Nawasra ,  Jonathan Pokrass ,  Moshe Laifenfeld ,  Nir Ben Zadok ,  Niv Gilboa ,  Tal Kaitz ,  Ronen Akerman ,  Naveh Levanon

IPC: G01B11/22 ,  G01S17/894 ,  G01S7/4865 ,  G06T7/55 ,  G06T7/521 ,  G06T7/80

Abstract: Depth mapping apparatus includes an illumination assembly, which directs modulated optical radiation toward a target scene, and a camera, which captures a two-dimensional image of the target scene. A range sensor senses respective times of flight of photons reflected from a matrix of locations disposed across the target scene. A processor derives first depth coordinates of the matrix of locations responsively to the respective times of flight, derives second depth coordinates of the matrix of locations responsively to a transverse disparity between features in the two-dimensional image and corresponding reference features in a reference image, computes a disparity correction function based on a difference between the first and the second depth coordinates at the matrix of locations, corrects the transverse disparity between the two-dimensional image and the reference image using the disparity correction function, and generates a depth map of the target scene based on the corrected transverse disparity.