公开(公告)号：US11595585B2

公开(公告)日：2023-02-28

申请号：US17447816

申请日：2021-09-16

Applicant: Google LLC

Inventor： Jinglun Gao ,  Lin Lu ,  Gang Sun ,  Szepo Hung ,  Ruben Manuel Velarde

IPC: H04N5/235

Abstract: A method includes detecting, based on sensor data from a sensor on a mobile device, an environmental brightness measurement, where the mobile device comprises a display screen configured to adjust display brightness based on environmental brightness. The method further includes determining, based on image data from a camera on the mobile device, an extent to which the detected environmental brightness measurement is caused by reflected light from the display screen. The method additionally includes setting a rate of exposure change for the camera based on the determined extent to which the detected environmental brightness measurement is caused by reflected light from the display screen.

公开(公告)号：US12120435B2

公开(公告)日：2024-10-15

申请号：US18062387

申请日：2022-12-06

Applicant: Google LLC

Inventor： Gang Sun ,  Jinglun Gao ,  Ruben Manuel Velarde ,  Szepo Robert Hung

IPC: H04N23/745 ,  H04N23/71 ,  H04N23/73

CPC classification number: H04N23/745 ,  H04N23/71 ,  H04N23/73

Abstract: Techniques and apparatuses are described for reducing a flicker effect of multiple light sources in an image captured with an imaging device. A lighting frequency associated with each of the multiple light sources is detected and prioritized relative to a flicker effect upon the image to identify at least a first-prioritized lighting frequency and a second-prioritized lighting frequency. A first exposure-time factorization set is determined for the first-prioritized lighting frequency, and a second exposure-time factorization set is determined for the second-prioritized lighting frequency. An exposure time of the imaging device is adjusted to an exposure time identified in the first exposure-time factorization set that matches, or aligns near-to-matching, an exposure time identified in the second exposure-time factorization set.

公开(公告)号：US20230100795A1

公开(公告)日：2023-03-30

申请号：US18062387

申请日：2022-12-06

Applicant: Google LLC

Inventor： Gang Sun ,  Jinglun Gao ,  Ruben Manuel Velarde ,  Szepo Robert Hung

IPC: H04N5/235

Abstract: Techniques and apparatuses are described for reducing a flicker effect of multiple light sources in an image captured with an imaging device. A lighting frequency associated with each of the multiple light sources is detected and prioritized relative to a flicker effect upon the image to identify at least a first-prioritized lighting frequency and a second-prioritized lighting frequency. A first exposure-time factorization set is determined for the first-prioritized lighting frequency, and a second exposure-time factorization set is determined for the second-prioritized lighting frequency. An exposure time of the imaging device is adjusted to an exposure time identified in the first exposure-time factorization set that matches, or aligns near-to-matching, an exposure time identified in the second exposure-time factorization set.

公开(公告)号：US20220006940A1

公开(公告)日：2022-01-06

申请号：US17447816

申请日：2021-09-16

Applicant: Google LLC

Inventor： Jinglun Gao ,  Lin Lu ,  Gang Sun ,  Szepo Hung ,  Ruben Manuel Velarde

IPC: H04N5/235

Abstract: A method includes detecting, based on sensor data from a sensor on a mobile device, an environmental brightness measurement, where the mobile device comprises a display screen configured to adjust display brightness based on environmental brightness. The method further includes determining, based on image data from a camera on the mobile device, an extent to which the detected environmental brightness measurement is caused by reflected light from the display screen. The method additionally includes setting a rate of exposure change for the camera based on the determined extent to which the detected environmental brightness measurement is caused by reflected light from the display screen.

公开(公告)号：US20210112189A1

公开(公告)日：2021-04-15

申请号：US16902623

申请日：2020-06-16

Applicant: Google LLC

Inventor： Gang Sun ,  Jinglun Gao ,  Ruben Manuel Velarde ,  Szepo Robert Hung

IPC: H04N5/235

Abstract: Techniques and apparatuses are described for reducing a flicker effect of multiple light sources in an image captured with an imaging device. A lighting frequency associated with each of the multiple light sources is detected and prioritized relative to a flicker effect upon the image to identify at least a first-prioritized lighting frequency and a second-prioritized lighting frequency. A first exposure-time factorization set is determined for the first-prioritized lighting frequency, and a second exposure-time factorization set is determined for the second-prioritized lighting frequency. An exposure time of the imaging device is adjusted to an exposure time identified in the first exposure-time factorization set that matches, or aligns near-to-matching, an exposure time identified in the second exposure-time factorization set.

公开(公告)号：US20250080856A1

公开(公告)日：2025-03-06

申请号：US18293107

申请日：2021-07-29

Applicant: Google LLC

Inventor： Jinglun Gao ,  Ruben Manuel Velarde ,  Szepo Robert Hung

IPC: H04N23/71 ,  H04N23/60 ,  H04N23/65

Abstract: This document describes techniques and apparatuses for computational photography under low-light conditions for an image-capture device on a mobile computing device. In aspects, described are techniques and apparatuses for an image-capture device to utilize sensor data in determining whether to enable flash photography or capture multiple images of the scene without use of a flash under low-light conditions. In other aspects, an image-capture device may utilize device data in determining whether to enable flash photography or capture multiple images of the scene without use of a flash under low-light conditions. The disclosed techniques and apparatuses may provide improved computational photography under low-light conditions for an image-capture device on a mobile computing device.

公开(公告)号：US20240348930A1

公开(公告)日：2024-10-17

申请号：US18294093

申请日：2021-08-02

Applicant: Google LLC

Inventor： Yichang Shih ,  Jinglun Gao ,  Ruben Manuel Velarde ,  Szepo Robert Hung

IPC: H04N23/73 ,  H04N23/63 ,  H04N23/71 ,  H04N23/72 ,  H04N23/745 ,  H04N23/90

CPC classification number: H04N23/73 ,  H04N23/63 ,  H04N23/71 ,  H04N23/72 ,  H04N23/745 ,  H04N23/90

Abstract: This document describes techniques and apparatuses for exposure control for image-capture. The techniques and apparatuses utilize sensor data to analyze a scene and, based on this analysis, determine a likelihood of exposure-related defects in captured images of the scene. Based on this likelihood, the techniques determine multiple different exposure times for multiple image-capture devices. An image-merging module then combines these different images captured with different exposure times to create a single image with reduced exposure-related defects.

公开(公告)号：US11546524B2

公开(公告)日：2023-01-03

申请号：US17242088

申请日：2021-04-27

Applicant: Google LLC

Inventor： Gang Sun ,  Jinglun Gao ,  Ruben Manuel Velarde ,  Szepo Robert Hung

IPC: H04N5/235

Abstract: Techniques and apparatuses are described for reducing a flicker effect of multiple light sources in an image captured with an imaging device. A lighting frequency associated with each of the multiple light sources is detected and prioritized relative to a flicker effect upon the image to identify at least a first-prioritized lighting frequency and a second-prioritized lighting frequency. A first exposure-time factorization set is determined for the first-prioritized lighting frequency, and a second exposure-time factorization set is determined for the second-prioritized lighting frequency. An exposure time of the imaging device is adjusted to an exposure time identified in the first exposure-time factorization set that matches, or aligns near-to-matching, an exposure time identified in the second exposure-time factorization set.

公开(公告)号：US11159737B2

公开(公告)日：2021-10-26

申请号：US16684947

申请日：2019-11-15

Applicant: Google LLC

Inventor： Jinglun Gao ,  Lin Lu ,  Gang Sun ,  Szepo Robert Hung ,  Ruben Manuel Velarde

IPC: H04N5/235

Abstract: A method includes detecting, based on sensor data from a sensor on a mobile device, an environmental brightness measurement, where the mobile device comprises a display screen configured to adjust display brightness based on environmental brightness. The method further includes determining, based on image data from a camera on the mobile device, an extent to which the detected environmental brightness measurement is caused by reflected light from the display screen. The method additionally includes setting a rate of exposure change for the camera based on the determined extent to which the detected environmental brightness measurement is caused by reflected light from the display screen.

公开(公告)号：US11496690B2

公开(公告)日：2022-11-08

申请号：US17447816

申请日：2021-09-16

Applicant: Google LLC

Inventor： Jinglun Gao ,  Lin Lu ,  Gang Sun ,  Szepo Hung ,  Ruben Manuel Velarde

IPC: H04N5/235

Abstract: A method includes detecting, based on sensor data from a sensor on a mobile device, an environmental brightness measurement, where the mobile device comprises a display screen configured to adjust display brightness based on environmental brightness. The method further includes determining, based on image data from a camera on the mobile device, an extent to which the detected environmental brightness measurement is caused by reflected light from the display screen. The method additionally includes setting a rate of exposure change for the camera based on the determined extent to which the detected environmental brightness measurement is caused by reflected light from the display screen.