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公开(公告)号：US20220141370A1
公开(公告)日：2022-05-05
申请号：US17521120
申请日：2021-11-08
Applicant: GoPro, Inc.
Inventor： Guillaume Matthieu Guérin , Giuseppe Moschetti , Sylvain Leroy , Yoël Taïeb
Abstract: Auto exposure metering is adapted for spherical panoramic content. Using input image data, a first metering map is generated for a selected image sensor and a second metering map is generated for an unselected image sensor. Auto exposure level values for the selected image sensor and for the unselected image sensor are respectively metered using the first metering map and the second metering map, such as by adjusting luminance weights in certain locations of the respective image sensor panoramic image capture band. Hemispherical images are processed using the auto exposure metered level values and stitched together in a panoramic format to produce a spherical panoramic image. The metering maps are generated to account for areas of greatest image data importance relative to a primary orientation direction of the spherical panoramic image. This allows for effective auto exposure metering of such areas within the resulting spherical panoramic image.
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公开(公告)号：US20220021852A1
公开(公告)日：2022-01-20
申请号：US17299767
申请日：2019-10-17
Applicant: GoPro, Inc.
Inventor： Guillaume Matthieu Guérin , Julien Caron
Abstract: Systems and methods are disclosed for image signal processing. For example, methods may include receiving an image from an image sensor, detecting, in a linear domain, color fringing areas in the image, correcting detected color fringing areas to obtain a corrected image, performing tone mapping to the corrected image to obtain a tone mapped image and storing, displaying, or transmitting an output image based on at least the tone mapped image.
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公开(公告)号：US20210125319A1
公开(公告)日：2021-04-29
申请号：US17140287
申请日：2021-01-04
Applicant: GoPro, Inc.
Inventor： Bruno César Douady , Guillaume Matthieu Guérin
Abstract: Multiple lookup tables (LUTs) storing different numbers of control point values are used to process pixels within different blocks of an image, such as after image processing using tone mapping and/or tone control, and/or to collect histogram information or implement 3D LUTs. First control point values stored within a first LUT are applied against pixels of a given block of an image to produce a distorted image block. Second control point values stored within a second lookup table are applied against a pixel of the distorted image block to produce a processed pixel. The second LUT is one of a plurality of second LUTs and stores fewer values than the first LUT. A processed image is produced using the processed pixel. The processed image is then output for further processing or display.
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24.发明申请公开(公告)号：US20210084237A1
公开(公告)日：2021-03-18
申请号：US16991825
申请日：2020-08-12
Applicant: GoPro, Inc.
Inventor： Guillaume Matthieu Guérin , Balthazar Neveu , Sandra Vitorino
Abstract: Methods for parameter alignment processing are described herein. An image capture device includes a first image capture device configured to capture a first image, a second image capture device configured to capture a second image, and an image signal processor connected to the first image capture device and to the second image capture device. The image signal processor is configured to apply, to the first image and the second image, at least two of a respective luminance lens shading (LLS) compensation factor, a respective color lens shading (CLS) compensation factor, a respective exposure difference compensation factor, a respective white balance compensation factor, a respective lens exposure correction (LEC) compensation factor, and a respective flare compensation factor, blend the compensated first image and the compensated second image to form a blended image, and output an image based on the blended image.
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公开(公告)号：US20210084200A1
公开(公告)日：2021-03-18
申请号：US17000822
申请日：2020-08-24
Applicant: GoPro, Inc.
Inventor： Bruno César Douady , Guillaume Matthieu Guérin , Eric Chasseur
Abstract: An image capture device may include an image sensor, a processor, and a memory. The image sensor may be configured to obtain an image. The processor may be configured to generate a grid on the image. The grid may include one or more vertices. The one or more vertices may be used to form tiles. The processor may be configured to determine a flare level of each vertex. The processor may be configured to assign a maximum flare level for each tile of the image. The processor may be configured to sort the tiles. The tiles may be sorted based on the maximum flare level of each tile. The processor may be configured to apply a flare compensation to a subset of the tiles to obtain a processed image. The processed image may have reduced flare artifacts or no flare artifacts. The processed image may be stored in the memory.
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Patent Agency Ranking
公开(公告)号：US20200244895A1
公开(公告)日：2020-07-30
申请号：US16756725
申请日：2018-10-17
Applicant: GoPro, Inc.
Inventor： Guillaume Matthieu Guérin , Michel Auger , Karl Krissian
Abstract: 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. The gain value may be progressively increased from an approximate center of the first image to an edge of the first image to a common exposure level. The gain value may be progressively decreased from an approximate center of the second image to an edge of the second image to the common exposure level. Gain values may be scaled on each color channel for a pixel based on a saturation level of the pixel.
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公开(公告)号：US20200184690A1
公开(公告)日：2020-06-11
申请号：US16655944
申请日：2019-10-17
Applicant: GoPro, Inc.
Inventor： Guillaume Matthieu Guérin , Julien Caron
IPC: G06T11/00
Abstract: Systems and methods are disclosed for non-linear color correction. The method including receiving an input image from an image sensor, converting the input image from a red, green, blue (RGB) color space format to an alternate color space format, determining localized hue correction parameters for a selected color in the alternate color space, determining localized saturation correction parameters for a selected hue in the alternate color space, applying the localized hue correction parameters and the localized saturation correction parameters to the input image to generate an output image and storing, displaying, or transmitting the output image based on at least the localized hue correction parameters and the localized saturation correction parameters.
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公开(公告)号：US20190260978A1
公开(公告)日：2019-08-22
申请号：US16142416
申请日：2018-09-26
Applicant: GoPro, Inc.
Inventor： Guillaume Matthieu Guérin , Karl Krissian , Marc Lebrun , Giuseppe Moschetti
Abstract: Image analysis and processing may include using an image processor to receive image data corresponding to an input image, determine an initial gain value for the image data based on at least one of a two-dimensional gain map or a parameterized radial gain model, determine whether the initial gain value is below a threshold, determine a maximum RGB triplet value for the image data where the initial gain value is below the threshold, determine a pixel intensity as output of a function for saturation management, determine a final gain value for the image data based on the maximum RGB triplet value and the pixel intensity, apply the final gain value against the image data to produce processed image data, and output the processed image data for further processing using the image processor.
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公开(公告)号：US12206998B2
公开(公告)日：2025-01-21
申请号：US18232584
申请日：2023-08-10
Applicant: GoPro, Inc.
Inventor： Guillaume Matthieu Guérin , Julien Caron
IPC: H04N23/741 , G06T3/4038 , G06T5/20 , G06T5/92
Abstract: Field variable tone mapping is performed for 360 content. An image capture device includes an image sensor and a processor. The image sensor obtains a hyper-hemispherical image and the processor performs local tone mapping (LTM) on a first area of the hyper-hemispherical image and performs global tone mapping (GTM) on a second area of the hyper-hemispherical image to obtain a processed image. The processor may be configured to display, store, output, or transmit the processed image.
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公开(公告)号：US12081883B2
公开(公告)日：2024-09-03
申请号：US17299767
申请日：2019-10-17
Applicant: GoPro, Inc.
Inventor： Guillaume Matthieu Guérin , Julien Caron
IPC: H04N25/611 , G06T5/77 , G06T5/80
CPC classification number: H04N25/611 , G06T5/77 , G06T5/80
Abstract: Systems and methods are disclosed for image signal processing. For example, methods may include receiving an image from an image sensor, detecting, in a linear domain, color fringing areas in the image, correcting detected color fringing areas to obtain a corrected image, performing tone mapping to the corrected image to obtain a tone mapped image and storing, displaying, or transmitting an output image based on at least the tone mapped image.
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