公开(公告)号：US20240354915A1

公开(公告)日：2024-10-24

申请号：US18587252

申请日：2024-02-26

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Seungwan KIM ,  Deoksoo Park ,  Byoung-Ju Song ,  Sanghoon Lee

IPC: G06T5/92 ,  G06T5/40 ,  G06T5/50

CPC classification number: G06T5/92 ,  G06T5/40 ,  G06T5/50 ,  G06T2207/20021

Abstract: An image processing device is provided. The device includes: a processor configured to: perform first tone mapping on an input image frame using a brightness enhancement tone curve corresponding to a current ambient illuminance value to obtain a first result; obtain histogram tone curves by applying a variable contrast limit to a plurality of histograms respectively corresponding to a plurality of sub-images, constituting a previous image frame; perform second tone mapping on the input image frame by interpolating the histogram tone curves to obtain a second result; and provide output image data by performing third tone mapping on the input image frame based on the first result and the second result. The brightness enhancement tone curve corresponds to a first human vision system (HVS) response to a reference ambient illuminance value and a second HVS response to a target ambient illuminance value.

公开(公告)号：US20240119573A1

公开(公告)日：2024-04-11

申请号：US18469017

申请日：2023-09-18

Applicant: Samsung Electronics Co., Ltd.

Inventor： Seungwan KIM ,  Deoksoo PARK ,  Byoungju SONG ,  Sanghoon LEE ,  Yongkwon CHO

IPC: G06T5/00 ,  G06T5/40

CPC classification number: G06T5/009 ,  G06T5/40

Abstract: An image processing method includes transforming input image data into a histogram, equalizing the histogram using a cumulative distribution function, setting a first weight value based on the equalized histogram and a first reference value, generating a first tone curve based on the equalized histogram and the first weight value, generating a final output tone curve by applying a second weight value to the first tone curve and an output of a second tone curve applied to the input image data, and generating output image data based on the final output tone curve and the input image data.