Patent Number: 9,386,243

Title: Lens shading correction method and image signal processing device and image sensor system employing the method

Abstract: A lens shading correction method includes providing lens shading correction profile data; calculating an intensity values of light passing through each of one or more visible light pass filters and each of one or more infrared light pass filters; calculating an average of the intensity values of the light passing through the one or more visible light pass filters; calculating an average of the intensity values of the light passing through the one or more infrared light pass filters; calculating a normalized intensity value of the light passing through the one or more infrared light pass filters, based on the calculated averages; adjusting one or more lens shading correction coefficients included in the lens shading correction profile data and each having a value varying depending on a frequency element of light, based on the calculated normalized intensity value; and correcting lens shading by using the adjusted lens shading correction coefficient.

Inventors: Lim; Dongpan (Suwon-Si, KR), Kim; Taechan (Yongin-Si, KR)

Assignee: Samsung Electronics Co., Ltd.

International Classification: H04N 5/357 (20110101); H04N 5/217 (20110101); H04N 9/04 (20060101)

Expiration Date: 2020-07-05 0:00:00