公开(公告)号：US20240221136A1

公开(公告)日：2024-07-04

申请号：US18604784

申请日：2024-03-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Weiwei XU ,  Jinsong WEN ,  Lei WU ,  Zhongke MA ,  Yanbing JIA ,  Quanhe YU ,  Zizhong WANG ,  Yichuan WANG ,  Hu CHEN

IPC: G06T5/92 ,  G06T7/11

CPC classification number: G06T5/92 ,  G06T7/11 ,  G06T2207/10016 ,  G06T2207/10024 ,  G06T2207/20208

Abstract: This application provides a tone mapping method including: obtaining a to-be-displayed image frame and metadata which includes at least one metadata information unit; segmenting the to-be-displayed image frame into a plurality of segmentation regions in a target segmentation manner, and determining a correspondence between the plurality of segmentation regions and the at least one metadata information unit; and for an ith pixel: determining, for a plurality of pixels included in a preset region, at least one related segmentation region to which the plurality of pixels belong, and determining a related metadata information unit corresponding to each related segmentation region; obtaining a tone mapping subvalue corresponding to the related segmentation region, and allocating a corresponding weighting factor to the related segmentation region; obtaining a tone mapping value based on the tone mapping subvalue and the weighting factor; and performing tone mapping based on the tone mapping value.

公开(公告)号：US20230325986A1

公开(公告)日：2023-10-12

申请号：US18334453

申请日：2023-06-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jinsong WEN ,  Jun DAI ,  Qiyan ZHAI ,  Yanbing JIA

IPC: G06T5/00 ,  G09G3/20

CPC classification number: G06T5/009 ,  G09G3/2003 ,  G09G2360/16 ,  G06T2207/10024 ,  G09G2340/06 ,  G06T2207/20208

Abstract: This application discloses an image processing method and a related apparatus, to support display of an HDR image, display more dynamic ranges and image details, provide richer colors, and improve user experience. The image processing method includes: obtaining a first RGB image, where the first RGB image is an RGB image sensed by a photographing apparatus; converting the first RGB image into a second RGB image, where the second RGB image is an image meeting a BT2020 color gamut range; determining a first luminance value corresponding to the second RGB image, where the first luminance value indicates maximum luminance of each frame of image in the second RGB image; determining a target image based on the first luminance value and the second RGB image; and sending the target image to a display apparatus, so that the display apparatus displays the target image.