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公开(公告)号：US11979668B2
公开(公告)日：2024-05-07
申请号：US17299470
申请日：2019-10-17
申请人： GoPro, Inc.
CPC分类号： H04N23/81 , G06T5/50 , G06T5/70 , G06T5/92 , G06T7/90 , H04N23/741 , G06T2207/20208 , G06T2207/20221
摘要： Systems and methods are disclosed for high dynamic range anti-ghosting and fusion. For example, methods may include receiving images from image sensors in a linear domain, each image having different exposures or gains, blending luminance values at each pixel from each of the images to generate a blended image, selecting an useful image based on degree of useful information for a pixel, calculating a distance value from the images for the pixel, locating from a look-up table (LUT) an anti-ghosting weight using the useful image and the distance value for the pixel, proportionally applying the located anti-ghosting weight to the pixel for each of the input images to generate an output image, all being performed in the linear domain, and storing, displaying, or transmitting the output image based on at least the anti-ghosting weight.
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公开(公告)号：US11863888B2
公开(公告)日：2024-01-02
申请号：US17965857
申请日：2022-10-14
申请人： GoPro, Inc.
CPC分类号： H04N25/61 , G06T5/50 , H04N9/67 , H04N9/77 , G06T2207/20212 , G06T2207/30168
摘要： Flare compensation includes obtaining a dark corner intensity differences profile between a first and a second image based on a relative illumination of an area outside a first image circle of the first image and a second image circle of the second image. The dark corner intensity differences profile is obtained for a luminance (Y) component. A flare profile is obtained using an intensity differences profile and the dark corner intensity differences profile. The intensity differences profile is obtained for the Y component along a stitch line between the first image and the second image. The flare profile of the Y component is converted to an RGB flare profile. The first image is modified based on the RGB flare profile to obtain a processed first image.
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公开(公告)号：US11671716B2
公开(公告)日：2023-06-06
申请号：US17465808
申请日：2021-09-02
申请人： GoPro, Inc.
摘要： An image capture device may process first frames from a first image sensor obtained at a first frame rate and store the processed first frames in a memory. The image capture device may obtain first camera control statistics based at least on partially processed second frames from a second image sensor obtained at a second frame rate. The image capture device may switch a capture mode to obtain third frames at the second frame rate from the first image sensor and to obtain fourth frames at the first frame rate from the second image sensor.
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公开(公告)号：US11653088B2
公开(公告)日：2023-05-16
申请号：US17543629
申请日：2021-12-06
申请人： GoPro, Inc.
发明人： Bruno César Douady , Michael Serge Andre Kraak , Guillaume Matthieu Guérin , Thomas Nicolas Emmanuel Veit
IPC分类号： H04N5/232 , H04N19/10 , H04N19/136 , H04N19/176 , H04N19/423 , H04N19/70 , H04N19/85 , H04N19/90 , G06T7/80 , H04N13/271 , G06T3/00 , G06T3/40 , G06T5/20 , G06T5/50 , H04N5/225 , H04N5/247 , H04N5/357 , H04N17/00 , H04N13/239 , H04N13/122 , G06T5/00
CPC分类号： H04N5/23222 , G06T3/0093 , G06T3/4038 , G06T5/20 , G06T5/50 , G06T7/85 , H04N5/2258 , H04N5/23238 , H04N5/247 , H04N5/3572 , H04N13/271 , H04N17/002 , H04N19/10 , H04N19/136 , H04N19/176 , H04N19/423 , H04N19/70 , H04N19/85 , H04N19/90 , G06T5/002 , G06T2207/10016 , H04N13/122 , H04N13/239
摘要： Systems and methods are disclosed for image signal processing. For example, methods may include receiving a current image of a sequence of images from an image sensor; combining the current image with a recirculated image to obtain a noise reduced image, where the recirculated image is based on one or more previous images of the sequence of images from the image sensor; determining a noise map for the noise reduced image, where the noise map is determined based on estimates of noise levels for pixels in the current image, a noise map for the recirculated image, and a set of mixing weights; recirculating the noise map with the noise reduced image to combine the noise reduced image with a next image of the sequence of images from the image sensor; and storing, displaying, or transmitting an output image that is based on the noise reduced image.
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公开(公告)号：US11475594B1
公开(公告)日：2022-10-18
申请号：US16702309
申请日：2019-12-03
申请人： GoPro, Inc.
摘要： Optical element(s) of an image capture device may be changed. Characteristic(s) of the optical element(s) may be determined based on shading map corresponding to an image captured by the image capture device and the lighting condition during the capture of the image. The image capture device may be operated in accordance with the determined characteristic(s) of the optical element(s).
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公开(公告)号：US11412150B2
公开(公告)日：2022-08-09
申请号：US17132140
申请日：2020-12-23
申请人： GoPro, Inc.
摘要： 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：US11363214B2
公开(公告)日：2022-06-14
申请号：US16756725
申请日：2018-10-17
申请人： GoPro, Inc.
摘要： 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：US11317070B2
公开(公告)日：2022-04-26
申请号：US16865622
申请日：2020-05-04
申请人： GoPro, Inc.
摘要： 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：US20220020183A1
公开(公告)日：2022-01-20
申请号：US17490321
申请日：2021-09-30
申请人： GoPro, Inc.
IPC分类号： G06T11/00
摘要： 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：US20210084274A1
公开(公告)日：2021-03-18
申请号：US16991818
申请日：2020-08-12
申请人： GoPro, Inc.
摘要： Methods for auto white balance (AWB) processing are described herein. An image capture device includes a first image capture device to capture a first image, a second image capture device to capture a second image, and an image signal processor. The image signal processor is configured to generate a global AWB scale based on the first image and the second image, apply a first image capture device calibration factor to the global AWB scale to generate a first image capture device AWB scale, apply a second image capture device calibration factor to the global AWB scale to generate a second image capture device AWB scale, compensate the first image using the first image capture device AWB scale, compensate the second image using the second image capture device AWB scale, and output an image based on the compensated first image and compensated second image.
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