公开(公告)号：US20240314462A1

公开(公告)日：2024-09-19

申请号：US18122324

申请日：2023-03-16

Applicant: CISTA SYSTEM CORP.

Inventor： ChingJu HSIAO ,  Zhaojian LI

IPC: H04N25/63 ,  H04N17/00

CPC classification number: H04N25/63 ,  H04N17/002

Abstract: This application describes methods and systems for dark shading calibration and correction. An example method may include configuring an image sensor into a plurality of sensor states to capture a plurality of dark images, determining a dark current distribution on each of the plurality of dark images captured by the image sensor to obtain a plurality of dark current distributions respectively corresponding to the plurality of sensor states, storing the plurality of dark current distributions in a memory associated with the image sensor, capturing an image by the image sensor at a first sensor state, determining a first dark current distribution for the first sensor state of the image sensor based on the plurality of dark current distributions stored in the memory, and offsetting dark current noise on the image based on the first dark current distribution for the first sensor state of the image sensor.