Invention Grant
- Patent Title: Local tone mapping for HDR video
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Application No.: US17168106Application Date: 2021-02-04
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Publication No.: US11756172B2Publication Date: 2023-09-12
- Inventor: Héloïse Eliane Geneviève Gresset , Brian Douglas Stewart
- Applicant: STMICROELECTRONICS (RESEARCH & DEVELOPMENT) LIMITED , STMICROELECTRONICS SA
- Applicant Address: GB Marlow
- Assignee: STMICROELECTRONICS (RESEARCH & DEVELOPMENT) LIMITED,STMICROELECTRONICS SA
- Current Assignee: STMICROELECTRONICS (RESEARCH & DEVELOPMENT) LIMITED,STMICROELECTRONICS SA
- Current Assignee Address: GB Marlow; FR Montrouge
- Agency: SEED INTELLECTUAL PROPERTY LAW GROUP LLP
- Priority: EP 305180 2020.02.25 EP 152878 2021.01.22
- Main IPC: G06T5/00
- IPC: G06T5/00 ; G06T5/50 ; H04N23/741

Abstract:
The present disclosure relates to a tone mapping method for a succession of images implemented by an image processing device. The method including a) the division of the images of the succession of images in a plurality of sub-blocks of first pixels; b) for a first image (INPUT_IMAGEf) of the succession of images, the creation of a first mini-image (MPICf) comprising pixels of the first mini-image, each pixel of the first mini-image representing a corresponding sub-block of the first image, the intensity of each pixel of the first mini-image being representative of the intensity of the first pixels of the corresponding sub-block; c) the storage of the first mini-image (MPICf) in a memory; and d) for a second image (INPUT_IMAGEf+1) of the succession of images, the modification of the second image according to the first mini-image (MPICf) in order to generate an output image.
Public/Granted literature
- US20210264579A1 LOCAL TONE MAPPING FOR HDR VIDEO Public/Granted day:2021-08-26
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