公开(公告)号：US20250071289A1

公开(公告)日：2025-02-27

申请号：US18811785

申请日：2024-08-22

Applicant: MEDIATEK INC.

Inventor： Shou-Ming Chen ,  Yu-Cheng Chu ,  Chia-Ying Li

IPC: H04N19/136 ,  G06T5/92 ,  H04N9/64 ,  H04N19/186 ,  H04N19/70

Abstract: An image encoder includes a tone mapper, an enhancement layer and an image file generator. The tone mapper is used to generate a base image according to an enhanced image and red green blue (RGB) gains. The RGB gains are set close to or the same as each other. The enhancement layer is used to generate a tone curve and/or a gain map of the base image and the enhanced image according to the tone mapper and/or a group including the base image and the enhanced image. The image file generator is used to generate an image file according to the base image and at least one member of a group including the tone curve and the gain map.