公开(公告)号：US11115590B1

公开(公告)日：2021-09-07

申请号：US16808576

申请日：2020-03-04

Applicant: GoPro, Inc.

Inventor： Guillaume Matthieu Guérin

IPC: H04N5/232 ,  H04N9/64 ,  H04N9/68 ,  H04N9/73 ,  H04N5/343

Abstract: An image capture device may obtain first frames at a first frame rate from a first image sensor and obtain second frames at a second frame rate from a second image sensor. The image capture device may process the first frames from the first image sensor and store the processed first frames in a memory. The image capture device may partially process the second frames from the second image sensor to obtain first camera control statistics. The image capture device may switch a capture mode to obtain third frames at the second frame rate from the first image sensor obtain fourth frames at the first frame rate from the second image sensor.

公开(公告)号：US20210084205A1

公开(公告)日：2021-03-18

申请号：US16994264

申请日：2020-08-14

Applicant: GoPro, Inc.

Inventor： Guillaume Matthieu Guérin ,  Sylvain Leroy ,  Yoël Taïeb ,  Giuseppe Moschetti

IPC: H04N5/225 ,  H04N5/235 ,  H04N9/77 ,  G06T3/40 ,  H04N13/156

Abstract: Auto exposure processing for spherical images improves image quality by reducing visible exposure level variation along a stitch line within a spherical image. An average global luminance value is determined based on auto exposure configurations of first and second image sensors. Delta luminance values are determined for each of the image sensors based on the average global luminance value and a luminance variance between the image sensors. The auto exposure configurations of the image sensors are then updated using the delta luminance values, and the updated auto exposure configurations are used to capture images which are then combined to produce the spherical image. In some cases wherein updating the auto exposure configurations using the delta luminance values would breach a threshold representing a target luminosity for the scene, the use of the delta luminance values may be limited or those values may instead be discarded.

公开(公告)号：US20200382752A1

公开(公告)日：2020-12-03

申请号：US16968709

申请日：2019-02-15

Applicant: GoPro, Inc.

Inventor： Guillaume Matthieu Guérin ,  Violaine Marie Mong-lan Sudret

IPC: H04N9/68

Abstract: Image analysis and processing may include a multiple-tone-control (MTC) unit configured to obtain a tone-control gain lookup table, a plurality of MTC gain lookup tables, wherein the input image is divided into a plurality of blocks and wherein the plurality of MTC gain lookup tables includes a respective MTC gain lookup table corresponding to each respective block from the plurality of blocks, MTC grid parameters, MTC weighting parameters, a tone-control gain based on the tone-control gain lookup table, a MTC gain based on at least one MTC gain lookup table from the plurality of MTC gain lookup tables, the MTC grid parameters, and the MTC weighting parameters, and an output value based on the tone-control gain and the MTC gain.

公开(公告)号：US20200098098A1

公开(公告)日：2020-03-26

申请号：US16137048

申请日：2018-09-20

Applicant: GoPro, Inc.

Inventor： Heng Zhang ,  Thomas Nicolas Emmanuel Veit ,  Guillaume Matthieu Guérin

IPC: G06T5/00 ,  G06T5/20 ,  H04N9/64

Abstract: Systems and methods are disclosed for image signal processing. For example, methods may include accessing an image from an image sensor; detecting an object area on the image; classifying the object area on the image; applying a filter to an object area of the image to obtain a low-frequency component image and a high-frequency component image; determining a first enhanced image based on a weighted sum of the low-frequency component image and the high-frequency component image, where the high-frequency component image is weighted more than the low-frequency component image; determining a second enhanced image based on the first enhanced image and a tone mapping; and storing, displaying, or transmitting an output image based on the second enhanced image.