公开(公告)号：US11102421B1

公开(公告)日：2021-08-24

申请号：US16996375

申请日：2020-08-18

Applicant: Apple Inc.

Inventor： Richard D. Seely ,  Giancarlo Todone ,  Hao Sun ,  Farhan A. Baqai

IPC: H04N5/262 ,  H04N5/235 ,  H04N5/232 ,  H04N5/353

Abstract: An incoming image stream may be obtained from an image capture device operating in low-light conditions and/or a simulated long exposure image capture mode. As images are obtained, a weighting operation may be performed on the pixels of the captured images to generate and/or update an accumulative weight map, wherein the weighting is based, e.g., on the proximity of the captured pixels' values to the respective image capture device's maximum observable pixel value. As batches of images are obtained, they may be fused, e.g., according to the accumulative weight map, in a memory-efficient manner that places an upper limit on the overall memory footprint of the fusion operations, to simulate an actual long exposure image capture. In some embodiments, the weight map may be stored at a lower resolution than the obtained images and then upscaled, e.g., via the use of guided filters, before being applied in the fusion operations.

公开(公告)号：US10966260B2

公开(公告)日：2021-03-30

申请号：US15755360

申请日：2015-08-28

Applicant: APPLE INC.

Inventor： Huarui Liang ,  Dawei Zhang ,  Shangfeng Li ,  Hao Sun ,  Zhiwei Wang

IPC: H04W76/12 ,  H04W76/10 ,  H04L29/06 ,  H04W76/27 ,  H04L12/66

Abstract: A device, system, and method performs a Voice over Long Term Evolution (LTE) (VoLTE) call setup procedure. The device includes a transceiver establishing a connection with a LTE network and an Internet Protocol (IP) Multimedia Subsystem (IMS). The device includes a processor executing a VoLTE call application with a further user equipment, receiving an input to execute the VoLTE call application, and generating a data packet including an indication to trigger a dedicated bearer establishment procedure. The transceiver transmits the data packet to one of the LTE network and the IMS. The indication triggers the dedicated bearer establishment procedure to be performed during a Session Initiation Protocol (SIP) signal exchange procedure.

公开(公告)号：US11570374B1

公开(公告)日：2023-01-31

申请号：US17357501

申请日：2021-06-24

Applicant: Apple Inc.

Inventor： Hao Sun ,  Farhan A. Baqai ,  Giancarlo Todone ,  Gijesh Varghese ,  Morten Poulsen ,  Richard D. Seely ,  Richard J. Shields ,  Srivani Pinneli ,  Wu Cheng

IPC: H04N5/235 ,  H04N5/232 ,  G06T5/50 ,  G06V40/16

Abstract: Devices, methods, and computer-readable media are disclosed, describing an adaptive, subject-aware approach for image bracket selection and fusion, e.g., to generate high quality images in a wide variety of capturing conditions, including low light conditions. An incoming image stream may be obtained from an image capture device, comprising images captured using differing default exposure values, e.g., according to a predetermined pattern. When a capture request is received, it may be detected whether one or more human or animal subjects are present in the incoming image stream. If a subject is detected, an exposure time of one or more images selected from the incoming image stream may be reduced relative to its default exposure time. Prior to the fusion operation, one of the selected images may be designated a reference image for the fusion operation based, at least in part, on a sharpness score and/or a blink score of the image.

公开(公告)号：US20210256669A1

公开(公告)日：2021-08-19

申请号：US17224830

申请日：2021-04-07

Applicant: Apple Inc.

Inventor： Marius Tico ,  Alok Deshpande ,  Anita Nariani Schulze ,  Hao Sun ,  Jun Hu ,  Justin Michael Faryabi-Allen ,  Morten Poulsen ,  Tak Shing Wong ,  Wu Cheng

IPC: G06T5/00 ,  G06K9/46 ,  H04N5/235

Abstract: Devices, methods, and computer-readable media are disclosed describing an adaptive approach for image bracket selection and fusion, e.g., to generate low noise and high dynamic range (HDR) images in a wide variety of capturing conditions. An incoming image stream may be obtained from an image capture device, wherein the incoming image stream comprises a variety of differently-exposed captures, e.g., EV0 images, EV− images, EV+ images, long exposure (or synthetic long exposure) images, EV0/EV− image pairs, etc., which are received according to a particular pattern. When a capture request is received, a set of rules and/or a decision tree may be used to evaluate one or more capture conditions associated with the images from the incoming image stream and determine which two or more images to select for a fusion operation. A noise reduction process may optionally be performed on the selected images before (or after) the registration and fusion operations.