公开(公告)号：US20170070731A1

公开(公告)日：2017-03-09

申请号：US15256526

申请日：2016-09-03

Applicant: Apple Inc.

Inventor： Benjamin A. Darling ,  Thomas E. Bishop ,  Kevin A. Gross ,  Paul M. Hubel ,  Todd S. Sachs ,  Guangzhi Cao ,  Alexander Lindskog ,  Stefan Weber ,  Jianping Zhou

IPC: H04N17/00 ,  G06T7/00

CPC classification number: H04N17/002 ,  G06T7/337 ,  G06T7/80 ,  G06T7/85

Abstract: Camera calibration includes capturing a first image of an object by a first camera, determining spatial parameters between the first camera and the object using the first image, obtaining a first estimate for an optical center, iteratively calculating a best set of optical characteristics and test setup parameters based on the first estimate for the optical center until the difference in a most recent calculated set of optical characteristics and previously calculated set of optical characteristics satisfies a predetermined threshold, and calibrating the first camera based on the best set of optical characteristics. Multi-camera system calibration may include calibrating, based on a detected misalignment of features in multiple images, the multi-camera system using a context of the multi-camera system and one or more prior stored contexts.

Abstract translation: 相机校准包括通过第一相机捕获对象的第一图像，使用第一图像确定第一相机和对象之间的空间参数，获得光学中心的第一估计值，迭代地计算最佳的一组光学特性和测试设置 基于光学中心的第一估计的参数，直到最近计算出的光学特性集合的差异和先前计算出的光学特性的组合满足预定阈值，并且基于最佳的光学特性集来校准第一相机。 多摄像机系统校准可以包括基于检测到的多个图像中的特征的不对准，使用多摄像机系统的上下文和一个或多个先前存储的上下文来校准多摄像机系统。