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公开(公告)号：WO2019040387A1
公开(公告)日：2019-02-28
申请号：PCT/US2018/047129
申请日：2018-08-21
Applicant: GOPRO, INC.
Inventor： DOUADY-PLEVEN, Bruno César , MELER, Antoine , CLIENTI, Christophe
Abstract: Systems and methods are disclosed for image signal processing. For example, methods may include receiving a first image from a first image sensor; receiving a second image from a second image sensor; determining an electronic rolling shutter correction mapping for the first image and the second image; determining a parallax correction mapping based on the first image and the second image for stitching the first image and the second image; determining a warp mapping based on the parallax correction mapping and the electronic rolling shutter correction mapping, wherein the warp mapping applies the electronic rolling shutter correction mapping after the parallax correction mapping; applying the warp mapping to image data based on the first image and the second image to obtain a composite image; and storing, displaying, or transmitting an output image that is based on the composite image.
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Patent Agency Ranking
公开(公告)号：WO2019104047A1
公开(公告)日：2019-05-31
申请号：PCT/US2018/062032
申请日：2018-11-20
Applicant: GOPRO, INC.
Inventor： DOUADY-PLEVEN, Bruno César , KRAAK, Michael Serge Andre , GUÉRIN, Guillaume Matthieu , VEIT, Thomas Nicolas Emmanuel
CPC classification number: H04N5/2351 , G06T5/009 , G06T5/40 , G06T2207/10024 , G06T2207/20008 , H04N5/235 , H04N5/243 , H04N5/357 , H04N9/646
Abstract: A system accesses an image with each pixel of the image having luminance values each representative of a color component of the pixel. The system generates a first histogram for aggregate luminance values of the image, and accesses a target histogram for the image representative of a desired global image contrast. The system computes a transfer function based on the first histogram and the target histogram such that when the transfer function is applied, a histogram of the modified aggregate luminance values is within a threshold similarity of the target histogram. The system modifies the image by applying the transfer function to the luminance values of the image to produce a tone mapped image, and outputs the modified image.
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公开(公告)号：WO2020006078A1
公开(公告)日：2020-01-02
申请号：PCT/US2019/039240
申请日：2019-06-26
Applicant: GOPRO, INC.
Abstract: An image capture apparatus may include an image sensor, a motion sensor, and an auto-exposure unit. The auto-exposure unit may obtain an input image captured during an exposure interval and corresponding motion data indicating motion of the image capture apparatus during the exposure interval. The auto-exposure unit may obtain image information-amount data for the input image. The auto-exposure unit may obtain derivative information-amount data based on the information-amount data and a candidate exposure adjustment. The auto-exposure unit may obtain an information-amount maximizing exposure interval based on the information-amount data and the derivative information-amount data. The image capture apparats may control the image sensor to obtain a subsequent input image signal representing a subsequent input image captured during the information-amount maximizing exposure interval, and output or store information representing the subsequent input image.
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公开(公告)号：WO2019226211A1
公开(公告)日：2019-11-28
申请号：PCT/US2019/020241
申请日：2019-03-01
Applicant: GOPRO, INC.
Abstract: Image signal processing may include flare reduction, which may include obtaining a first input frame captured by a first image capture device of an image capture apparatus, the first image capture device having a first field-of-view, and the first input frame including lens flare corresponding to a primary light source; obtaining a second input frame captured by a second image capture device of the image capture apparatus, the second image capture device having a second field-of-view partially overlapping the first field-of-view; obtaining primary light source information corresponding to the primary light source based on the first input frame and the second input frame; obtaining a processed frame by modifying the first input frame based on the primary light source information to minimize the lens flare; and outputting the processed frame.
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公开(公告)号：WO2019147540A1
公开(公告)日：2019-08-01
申请号：PCT/US2019/014470
申请日：2019-01-22
Applicant: GOPRO, INC.
Inventor： DOUADY-PLEVEN, Bruno César , VACQUERIE, Vincent
Abstract: Systems and methods are disclosed for image capture. For example, methods may include accessing a sequence of images from an image sensor; determining a sequence of parameters for respective images in the sequence of images based on the respective images; storing the sequence of images in a buffer; determining a temporally smoothed parameter for a current image in the sequence of images based on the sequence of parameters, wherein the sequence of parameters includes parameters for images in the sequence of images that were captured after the current image; applying image processing to the current image based on the temporally smoothed parameter to obtain a processed image; and storing, displaying, or transmitting an output image based on the processed image.
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公开(公告)号：WO2019118319A1
公开(公告)日：2019-06-20
申请号：PCT/US2018/064673
申请日：2018-12-10
Applicant: GOPRO, INC.
Inventor： DOUADY-PLEVEN, Bruno César , GUÉRIN, Guillaume Matthieu
Abstract: Image signal processing includes obtaining two or more image signals from a first hyper-hemispherical image sensor, where each of the two or more image signals has a different exposure and obtaining two or more image signals from a second hyper-hemispherical image sensor, where each of the two or more image signals has a different exposure. Image signal processing includes generating an exposure compensated image based on a gain value applied to an exposure level of a first image and a gain value applied to an exposure level of a second image. Image signal processing further includes performing high dynamic range (HDR) processing on the exposure compensated image. The HDR processing may be performed on a high a frequency portion of the exposure compensated image.
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