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公开(公告)号：US12058448B1
公开(公告)日：2024-08-06
申请号：US16564548
申请日：2019-09-09
Applicant: Apple Inc.
Inventor： Hao Sun , Gijesh Varghese , Tak Shing Wong , Farhan A. Bagai , Morten Poulsen , Wu Cheng , Su Wang , Alok Deshpande
IPC: H04N23/743 , G06T5/50 , G06T5/92 , H04N23/63 , H04N23/741
CPC classification number: H04N23/743 , G06T5/50 , G06T5/92 , H04N23/631 , H04N23/741 , G06T2207/20208 , G06T2207/20221
Abstract: An adaptive approach to image bracket determination and a more memory-efficient approach to image fusion, which are designed to generate low noise and high dynamic range (HDR) images in a wide variety of capturing conditions, are described. An incoming preview image stream may be obtained from an image capture device. When a capture request is received, an analysis may be performed on an image from the preview image stream that has a predetermined temporal relationship to the image capture request. Based on the analysis, a set of images (and their respective capture parameters, e.g., exposure time) may be determined for the image capture device to capture. As the determined set of images are captured, they may be registered and fused in a memory-efficient manner that, e.g., places an upper limit on the overall memory footprint of the registration and fusion operations—regardless of how many images are captured in total.
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Patent Agency Ranking
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
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.
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公开(公告)号：US11562470B2
公开(公告)日：2023-01-24
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
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.
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4.发明授权公开(公告)号：US11189017B1
公开(公告)日：2021-11-30
申请号：US16563273
申请日：2019-09-06
Applicant: Apple Inc.
Inventor： Farhan A. Baqai , Gijesh Varghese , Hao Sun , Tak Shing Wong
Abstract: Devices, methods, and computer-readable media describing an adaptive approach for image selection, fusion, and noise reduction, e.g., to generate low noise and high dynamic range (HDR) images with improved motion freezing in a variety of capturing conditions. An incoming image stream may be obtained from an image capture device, wherein the image stream comprises a variety of differently-exposed captures, e.g., EV0 images, EV− images, EV+ images. When a capture request is received, a set of rules 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. The fusion operation may be designed to adaptively fuse the selected images, e.g., in a fashion that is determined to be optimal from a noise variance minimization standpoint. A fusion-adaptive noise reduction process may further be performed on the resultant fused image.
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公开(公告)号：US11094039B1
公开(公告)日：2021-08-17
申请号：US16563410
申请日：2019-09-06
Applicant: Apple Inc.
Inventor： Tak Shing Wong , Gijesh Varghese , Farhan A. Baqai , Wu Cheng , Hao Sun
Abstract: Devices, methods, and computer-readable media describing an adaptive approach for image selection, fusion, and noise reduction, e.g., to generate low noise and high dynamic range (HDR) images with improved motion freezing in a variety of capturing conditions. An incoming image stream may be obtained from an image capture device, wherein the image stream comprises a variety of differently-exposed captures, e.g., EV0 images, EV− images, EV+ images. When a capture request is received, a set of rules 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. The fusion operation may be designed to adaptively fuse the selected images, e.g., in a fashion that is determined to be optimal from a noise variance minimization standpoint. A fusion-adaptive noise reduction process may further be performed on the resultant fused image.
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公开(公告)号：US10977778B2
公开(公告)日：2021-04-13
申请号：US16426448
申请日：2019-05-30
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
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.
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