公开(公告)号：US12192645B2

公开(公告)日：2025-01-07

申请号：US18098175

申请日：2023-01-18

Applicant: REALTEK SEMICONDUCTOR CORP.

Inventor： Yu-Heng Tzeng

IPC: H04N23/73 ,  G06V10/25 ,  G06V10/50 ,  G06V10/60 ,  G06V10/75 ,  H04N23/741 ,  H04N25/589

Abstract: A method and a circuitry for exposure compensation applied to a high dynamic range video are provided. The circuitry is adapted to an image-acquisition device. In the method, when a video is received, the pixel values for each of the sequential frames can be obtained. Next, an exposure value ratio between two adjacent frames is obtained. A processor exposure value ratio of an image signal processor can be regarded as an initial exposure value ratio. A fixed adjustment ratio is used to control the image signal processor and an image sensor of the image-acquirement device so as to calculate an exposure value ratio for each of the frames. The exposure value ratio is referred to for performing the high dynamic range compensation for the frames so as to output an HDR video.