公开(公告)号：US20250088742A1

公开(公告)日：2025-03-13

申请号：US18621956

申请日：2024-03-29

Applicant: Apple Inc.

Inventor： Tao Zhang ,  Avijit S. Wasu ,  Florian Ciurea ,  Joshua B. Shagam ,  Richard J. Shields ,  Zejing Wang

IPC: H04N23/68

Abstract: Stabilizing camera preview frames involves obtaining preview frames and associated camera motion signals, smoothing out the trajectory of these frames to correct for camera movement, and then displaying the corrected frames. The process includes comparing current and prior preview frames and their motion signals to calculate smoothed trajectories and apply appropriate rotation and translation corrections. The specifics of trajectory smoothing take into account factors such as motion state, lighting, or capture mode, which can influence the strength of the smoothing parameter. Transform matrices are utilized based on correction rotation to adjust sample points within images, and special considerations like camera sag are factored into the image corrections.

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.