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    Scene Motion Correction In Fused Image Systems
    33.
    发明申请
    Scene Motion Correction In Fused Image Systems 有权

    公开(公告)号：US20150350509A1

    公开(公告)日：2015-12-03

    申请号：US14292562

    申请日：2014-05-30

    Applicant: Apple Inc.

    Inventor： Marius Tico ,  Rolf Toft ,  Paul M. Hubel

    IPC: H04N5/235 ,  H04N5/265

    CPC classification number: H04N5/2353 ,  G06T5/50 ,  G06T2207/10144 ,  G06T2207/20201 ,  G06T2207/20221 ,  H04N5/23277 ,  H04N5/2355 ,  H04N5/265

    Abstract: Techniques to capture and fuse short- and long-exposure images of a scene from a stabilized image capture device are disclosed. More particularly, the disclosed techniques use not only individual pixel differences between co-captured short- and long-exposure images, but also the spatial structure of occluded regions in the long-exposure images (e.g., areas of the long-exposure image(s) exhibiting blur due to scene object motion). A novel device used to represent this feature of the long-exposure image is a “spatial difference map.” Spatial difference maps may be used to identify pixels in the short- and long-exposure images for fusion and, in one embodiment, may be used to identify pixels from the short-exposure image(s) to filter post-fusion so as to reduce visual discontinuities in the output image.

    Backwards-Compatible High Dynamic Range (HDR) Images
    35.
    发明申请
    Backwards-Compatible High Dynamic Range (HDR) Images 有权

    公开(公告)号：US20220092749A1

    公开(公告)日：2022-03-24

    申请号：US17029800

    申请日：2020-09-23

    Applicant: Apple Inc.

    Inventor： Garrett M. Johnson ,  Paul M. Hubel

    IPC: G06T5/00 ,  H04N5/235 ,  G06T5/50 ,  G06T3/40

    Abstract: Devices, methods, and program storage devices for creating and/or displaying backwards-compatible High Dynamic Range (HDR) images are disclosed, comprising: obtaining two or more exposures of a scene; creating a gain map based on at least one of the two or more exposures, wherein the gain map comprises a plurality of pixels each corresponding to a portion of the scene, and wherein values of the pixels in the gain map comprise indications of a brightness level of the corresponding portions of the scene; combining the two or more exposures to form a first image; tone mapping the first image based on a Standard Dynamic Range (SDR) format to generate a first SDR image of the scene; and storing the first SDR image and created gain map in a first enhanced image file. The first enhanced image file may be, e.g., a HEIF, HEIC, PNG, GIF, JPEG, or other suitable file format.

    Still image stabilization/optical image stabilization synchronization in multi-camera image capture
    36.
    发明授权
    Still image stabilization/optical image stabilization synchronization in multi-camera image capture 有权

    公开(公告)号：US10771697B2

    公开(公告)日：2020-09-08

    申请号：US15696583

    申请日：2017-09-06

    Applicant: Apple Inc.

    Inventor： Paul M. Hubel ,  Marius Tico ,  Ting Chen

    IPC: H04N5/232 ,  H04N5/235 ,  G06T5/00 ,  G06T5/50 ,  G06T7/00 ,  H04N5/225

    Abstract: Techniques are disclosed for managing image capture and processing in a multi-camera imaging system. In such a system, a pair of cameras each may output a sequence of frames representing captured image data. The cameras' output may be synchronized to each other to cause synchronism in the image capture operations of the cameras. The system may assess image quality of frames output from the cameras and, based on the image quality, designate a pair of the frames to serve as a “reference frame pair.” Thus, one frame from the first camera and a paired frame from the second camera will be designated as the reference frame pair. The system may adjust each reference frame in the pair using other frames from their respective cameras. The reference frames also may be processed by other operations within the system, such as image fusion.

    Scene motion correction in fused image systems
    37.
    发明授权
    Scene motion correction in fused image systems 有权

    公开(公告)号：US10432861B2

    公开(公告)日：2019-10-01

    申请号：US16362253

    申请日：2019-03-22

    Applicant: Apple Inc.

    Inventor： Claus Molgaard ,  Marius Tico ,  Rolf Toft ,  Paul M. Hubel

    IPC: H04N5/217 ,  H04N5/232 ,  H04N5/235 ,  G06T5/00 ,  G06T7/20 ,  G06T7/254 ,  H04N5/355 ,  G06T11/60 ,  G06T5/50 ,  H04N5/91 ,  H04N5/359

    Abstract: Techniques to capture and fuse short- and long-exposure images of a scene from a stabilized image capture device are disclosed. More particularly, the disclosed techniques use not only individual pixel differences between co-captured short- and long-exposure images, but also the spatial structure of occluded regions in the long-exposure images (e.g., areas of the long-exposure image(s) exhibiting blur due to scene object motion). A novel device used to represent this feature of the long-exposure image is a “spatial difference map.” Spatial difference maps may be used to identify pixels in the short- and long-exposure images for fusion and, in one embodiment, may be used to identify pixels from the short-exposure image(s) to filter post-fusion so as to reduce visual discontinuities in the output image.

    Enhancing Spatial Resolution in a Stereo Camera Imaging System
    38.
    发明申请
    Enhancing Spatial Resolution in a Stereo Camera Imaging System 审中-公开

    公开(公告)号：US20180278913A1

    公开(公告)日：2018-09-27

    申请号：US15936275

    申请日：2018-03-26

    Applicant: Apple Inc.

    Inventor： Ziv Attar ,  Paul M. Hubel ,  Ilana Volfin ,  Sebastien Marineau-Mes

    IPC: H04N13/15 ,  H04N13/257 ,  H04N13/239 ,  H04N9/78 ,  H04N5/232 ,  H04N9/43

    Abstract: Techniques are disclosed for capturing stereoscopic images using one or more high color density or “full color” image sensors and one or more low color density or “sparse color” image sensors. Low color density image sensors, may include substantially fewer color pixels than the sensor's total number of pixels, as well as fewer color pixels than the total number of color pixels on the full color image sensor. More particularly, the mostly-monochrome image captured by the low color density image sensor may be used to reduce noise and increase the spatial resolution of an imaging system's output image. In addition, the color pixels present in the low color density image sensor may be used to identify and fill in color pixel values, e.g., for regions occluded in the image captured using the full color image sensor. Optical Image Stabilization and/or split photodiodes may be employed on one or more sensors.

    Mismatched Foreign Light Detection And Mitigation In The Image Fusion Of A Two-Camera System
    40.
    发明申请
    Mismatched Foreign Light Detection And Mitigation In The Image Fusion Of A Two-Camera System 审中-公开

    公开(公告)号：US20170359534A1

    公开(公告)日：2017-12-14

    申请号：US15617503

    申请日：2017-06-08

    Applicant: Apple Inc.

    Inventor： Xiaoxing Li ,  Paul M. Hubel ,  Marius Tico ,  Lech J. Szumilas

    IPC: H04N5/357 ,  H04N5/225 ,  H04N5/265

    CPC classification number: H04N5/3572 ,  G06T5/50 ,  G06T2207/20221 ,  H04N5/2258 ,  H04N5/23238 ,  H04N5/265

    Abstract: Foreign lighting effects, such as lens flare, are very common in natural images. In a two-camera-system, the two images may be fused together to generate one image of a better quality. However, there are frequently different foreign light patterns in the two images that form the image pair, e.g., due to the difference in lens design, sensor and position, etc. Directly fusing such pairs of images will result in non-photorealistic images, with composed foreign light patterns from both images from the image pair. This disclosure describes a general foreign light mitigation scheme to detect all kinds of foreign light region mismatches. The detected foreign light mismatch regions may be deemphasized or excluded in the fusion step, in order to create a fused image that keeps a natural-looking foreign light pattern that is close to what was seen by the user of an image capture device during an image capture preview mode.

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