公开(公告)号：US20240373136A1

公开(公告)日：2024-11-07

申请号：US18562632

申请日：2021-05-20

Applicant: Google LLC

Inventor： Liang Liang ,  Michelle Y. Chen ,  Isaac William Reynolds ,  Shih-Ming Wang

IPC: H04N23/88 ,  H04N23/63 ,  H04N23/667

Abstract: This document describes methods and systems for a hybrid white balance, HWB, mode (114), which is a hybrid of automatic and manual WB modes, in a camera system (104) of an electronic device (102). The HWB mode may provide options for a user to select a WB setting, via a camera user interface (118) in a live-preview mode (110), along a continuous WB-adjustment range. In this way, the user's desired color can be applied with respect to images or video captured by the camera system. The camera UI includes a manual WB control (112) to manually adjust the white balance. A WB module (108) determines target WB gains corresponding to the manual WB control relative to an initial automatic WB decision for a current frame displayed in the live-preview mode of the camera application. In aspects, a look-up-table correlating to the manual WB control is used to compute the target WB gains.

公开(公告)号：US20240292115A1

公开(公告)日：2024-08-29

申请号：US18292829

申请日：2021-10-12

Applicant: GOOGLE LLC

Inventor： Liang Liang ,  Anirban Chatterjee ,  Nisha Masharani ,  Eric Scott Penner ,  Isaac William Reynolds

IPC: H04N23/88 ,  H04N23/12 ,  H04N23/57 ,  H04N23/611 ,  H04N23/63

CPC classification number: H04N23/88 ,  H04N23/12 ,  H04N23/57 ,  H04N23/611 ,  H04N23/632

Abstract: This document describes techniques and apparatuses for automatic white-balance for a camera system. The techniques and apparatuses utilize a precursor image to detect one or more detected faces and determine a tone. The camera system retrieves tonal data based on a group of images determined to contain a same face as the detected face. Based on this tonal data, a difference in white balance is determined based on the difference in tone of the detected face within the precursor image and the associated tonal data. Camera settings are adjusted based on the difference in white balance to enable capture of an image having an improved tone.

公开(公告)号：US20240193731A1

公开(公告)日：2024-06-13

申请号：US18079826

申请日：2022-12-12

Applicant: Google LLC

Inventor： Liang Liang ,  Dohyun Kim

IPC: G06T5/00 ,  G06T7/90 ,  G06V10/25 ,  G06V10/75 ,  G06V40/16

CPC classification number: G06T5/001 ,  G06T7/90 ,  G06V10/25 ,  G06V10/751 ,  G06V40/161

Abstract: Implementations described herein relate to methods, devices, and computer-readable media to automatically adjust white balance in an image. In some implementations, a computer-implemented method includes detecting a face in the image, wherein the face corresponds to a plurality of pixels. The method further includes determining a region of interest (ROI) for the face, wherein the region of interest excludes at least one pixel from the plurality of pixels that correspond to the face. The method further includes performing a face color calculation for the face based on the region of interest for the face. The method further includes adjusting the white balance in the image based on the face color calculation to obtain an output image.