公开(公告)号：US09686539B1

公开(公告)日：2017-06-20

申请号：US15180048

申请日：2016-06-12

Applicant: Apple Inc.

Inventor： Marco Zuliani ,  Claus Molgaard ,  Paul M. Hubel

IPC: H04N17/00 ,  H04N17/02 ,  H04N5/247 ,  G06T7/00

CPC classification number: H04N17/002 ,  G06T7/004 ,  G06T7/85 ,  G06T2207/10012 ,  G06T2207/30168 ,  G06T2207/30201 ,  H04N5/247 ,  H04N13/239 ,  H04N13/246

Abstract: Systems, methods, and computer readable media for calibrating two cameras (image capture units) using a non-standard, and initially unknown, calibration object are described. More particularly, an iterative approach to determine the structure and pose of an target object in an unconstrained environment are disclosed. The target object may be any of a number of predetermined objects such as a specific three dimensional (3D) shape, a specific type of animal (e.g., dogs), or the face of an arbitrary human. Virtually any object whose structure may be expressed in terms of a relatively low dimensional parametrized model may be used as a target object. The identified object (i.e., its pose and shape) may be used as input to a bundle adjustment operation resulting in camera calibration.

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。

公开(公告)号：US09565370B2

公开(公告)日：2017-02-07

申请号：US14292147

申请日：2014-05-30

Applicant: Apple Inc.

Inventor： Paul M. Hubel ,  Todd S. Sachs

IPC: H04N5/262 ,  H04N5/265 ,  H04N5/235 ,  H04N5/232 ,  G06K9/20 ,  G06K9/62

CPC classification number: H04N5/265 ,  G06K9/2036 ,  G06K9/6289 ,  G06K2209/01 ,  H04N1/00 ,  H04N5/23245 ,  H04N5/23258 ,  H04N5/235 ,  H04N5/2353 ,  H04N5/2354

Abstract: The present disclosure relates to image processing and analysis and in particular automatic segmentation of identifiable items in an image, for example the segmentation and identification of characters or symbols in an image. Upon user indication, multiple images of a subject are captured and variations between the images are created using lighting, spectral content, angles and other factors. The images are processed together so that characters and symbols may be recognized from the surface of the image subject.

Abstract translation: 本公开涉及图像处理和分析，特别是图像中的可识别项目的自动分割，例如图像中的字符或符号的分割和识别。 在用户指示时，捕获对象的多个图像，并且使用照明，光谱内容，角度和其他因素来创建图像之间的变化。 图像被一起处理，使得可以从图像对象的表面识别字符和符号。

公开(公告)号：US09213822B2

公开(公告)日：2015-12-15

申请号：US13744349

申请日：2013-01-17

Applicant: Apple Inc.

Inventor： Richard R. Dellinger ,  Imran Chaudhri ,  Gregory Christie ,  Scott Forstall ,  Paul M. Hubel

IPC: G06F21/00 ,  G06F21/36 ,  G06F3/0488

CPC classification number: G06F21/6218 ,  G06F3/0481 ,  G06F3/0484 ,  G06F3/0488 ,  G06F3/04883 ,  G06F21/36

Abstract: A device with a touch sensitive display and a plurality of applications, including a camera application, while the device is in a locked, passcode-protected state: displays a lock screen interface, the lock screen interface including a camera access indicia; detects a gesture; in response to a determination that the gesture starts on the camera access indicia: ceases to display the lock screen interface; starts a restricted session for the camera application; displays an interface for the camera application, without displaying a passcode entry interface; and maintains the device in the locked, passcode-protected state for the applications other than the camera application; and in response to a determination that the gesture starts at a location other than the camera access indicia: displays a passcode entry interface, wherein in response to entry of a correct passcode in the passcode entry interface, the device enters an unlocked state.

Abstract translation: 一种具有触敏显示器和多个应用的​​设备，包括相机应用，同时该设备处于锁定的密码保护状态中：显示锁屏界面，锁屏界面包括相机访问标记; 检测手势; 响应于手势在相机访问标记上开始的确定：不再显示锁屏界面; 启动相机应用程序的限制会话; 显示相机应用程序的界面，而不显示密码输入界面; 并且将该设备保持在用于相机应用以外的应用的锁定，密码保护状态中; 并且响应于手势在除相机访问指示之外的位置开始的确定：显示密码输入界面，其中响应于在密码输入界面中输入正确的密码，设备进入未锁定状态。

公开(公告)号：US20150350513A1

公开(公告)日：2015-12-03

申请号：US14292792

申请日：2014-05-30

Applicant: Apple Inc.

Inventor： Xuemei Zhang ,  Marius Tico ,  Yingjun Bai ,  Farhan A. Baqai ,  Fabio Riccardi ,  Juanqing Chen ,  Paul M. Hubel ,  George E. Williams ,  Todd S. Sachs ,  Yongfang Liang

IPC: H04N5/235 ,  H04N5/232 ,  G06T5/00 ,  H04N5/265 ,  H04N5/91 ,  G06K9/46

CPC classification number: H04N5/2355 ,  G06K9/4642 ,  G06K9/4661 ,  G06T5/001 ,  G06T5/009 ,  G06T5/40 ,  G06T2207/10144 ,  G06T2207/20016 ,  G06T2207/20208 ,  G06T2207/20221 ,  H04N5/23245 ,  H04N5/265 ,  H04N5/91

Abstract: Systems, methods, and computer readable media to capture and process high dynamic range (HDR) images when appropriate for a scene are disclosed. When appropriate, multiple images at a single—slightly underexposed—exposure value are captured (making a constant bracket HDR capture sequence) and local tone mapping (LTM) applied to each image. Local tone map and histogram information can be used to generate a noise-amplification mask which can be used during fusion operations. Images obtained and fused in the disclosed manner provide high dynamic range with improved noise and de-ghosting characteristics.

Abstract translation: 公开了适用于场景时捕获和处理高动态范围（HDR）图像的系统，方法和计算机可读介质。 在适当的情况下，捕获单个稍微曝光不足的曝光值的多个图像（使恒定的支架HDR捕获序列）和本地色调映射（LTM）应用于每个图像。 本地色调图和直方图信息可用于生成可在融合操作期间使用的噪声放大掩模。 以所公开的方式获得和融合的图像提供高动态范围，具有改进的噪声和去重影特性。

公开(公告)号：US20130191911A1

公开(公告)日：2013-07-25

申请号：US13744349

申请日：2013-01-17

Applicant: Apple Inc.

Inventor： Richard R. Dellinger ,  Imran Chaudhri ,  Gregory Christie ,  Scott Forstall ,  Paul M. Hubel

IPC: G06F21/36

CPC classification number: G06F21/6218 ,  G06F3/0481 ,  G06F3/0484 ,  G06F3/0488 ,  G06F3/04883 ,  G06F21/36

Abstract: A device with a touch sensitive display and a plurality of applications, including a camera application, while the device is in a locked, passcode-protected state: displays a lock screen interface, the lock screen interface including a camera access indicia; detects a gesture; in response to a determination that the gesture starts on the camera access indicia: ceases to display the lock screen interface; starts a restricted session for the camera application; displays an interface for the camera application, without displaying a passcode entry interface; and maintains the device in the locked, passcode-protected state for the applications other than the camera application; and in response to a determination that the gesture starts at a location other than the camera access indicia: displays a passcode entry interface, wherein in response to entry of a correct passcode in the passcode entry interface, the device enters an unlocked state.

Abstract translation: 一种具有触敏显示器和多个应用的​​设备，包括相机应用，同时该设备处于锁定的密码保护状态中：显示锁屏界面，锁屏界面包括相机访问标记; 检测手势; 响应于手势在相机访问标记上开始的确定：不再显示锁屏界面; 启动相机应用程序的限制会话; 显示相机应用程序的界面，而不显示密码输入界面; 并且将该设备保持在用于相机应用以外的应用的锁定，密码保护状态中; 并且响应于手势在除相机访问指示之外的位置开始的确定：显示密码输入界面，其中响应于在密码输入界面中输入正确的密码，设备进入未锁定状态。