公开(公告)号：US20250080858A1

公开(公告)日：2025-03-06

申请号：US18462199

申请日：2023-09-06

Applicant: QUALCOMM Incorporated

Inventor： Meng-Lin Wu ,  Venkata Ravi Kiran Dayana ,  Sandesh Ghimire ,  Kai Liu ,  Ching-Fu Chen

IPC: H04N23/741 ,  H04N23/743

Abstract: This disclosure provides systems, methods, and devices for image signal processing that support high dynamic range (HDR) image processing on image frames with temporally-aligned centers to reduce artifacts resulting from fusing image frames with different temporal centers. In some aspects, a method of image processing includes capturing three or more image frames having at least two different exposure lengths. The three or more image frames are processed to obtain two image frames with temporally-aligned centers, and those two image frames are processed in HDR fusion logic to obtain an output HDR image frame. Other aspects and features are also claimed and described.

公开(公告)号：US20250078227A1

公开(公告)日：2025-03-06

申请号：US18462218

申请日：2023-09-06

Applicant: QUALCOMM Incorporated

Inventor： Meng-Lin Wu ,  Venkata Ravi Kiran Dayana ,  Sandesh Ghimire ,  Kai Liu ,  Ching-Fu Chen

IPC: G06T5/00 ,  G06T5/50

Abstract: This disclosure provides systems, methods, and devices for image signal processing that support image signal processing of exposure bracketed image frames. In a first aspect, a method of image processing includes receiving, by at least one processor, image data comprising first image data of a first exposure duration, second image data of a second exposure duration, and third image data of a third exposure duration, wherein the first exposure duration is equal to the third exposure duration; determining, by the at least one processor, fourth image data by subtracting corresponding pixel intensity values of the third image data from the second image data; and determining, by the at least one processor, a first output image frame by combining the fourth image data with the first image data. Other aspects and features are also claimed and described.