US 11,729,505 B2
Image signal processor, electronic device, and image stabilization method
Hye Yun Jung, Seoul (KR); Jae Won Choi, Yongin-si (KR); Seung Won Choi, Hwaseong-si (KR); and Yeong Min Lee, Hwaseong-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD.
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Nov. 26, 2021, as Appl. No. 17/535,924.
Claims priority of application No. 10-2021-0019243 (KR), filed on Feb. 10, 2021; and application No. 10-2021-0074784 (KR), filed on Jun. 9, 2021.
Prior Publication US 2022/0385816 A1, Dec. 1, 2022
Int. Cl. H04N 23/68 (2023.01); G06T 7/20 (2017.01); H04N 23/80 (2023.01); H04N 25/60 (2023.01)
CPC H04N 23/683 (2023.01) [G06T 7/20 (2013.01); H04N 23/6811 (2023.01); H04N 23/6812 (2023.01); H04N 23/80 (2023.01); G06T 2207/20224 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electronic device, comprising:
a camera module which generates and outputs gyro data and frame data for an input image; and
an image signal processor,
wherein the image signal processor comprises:
a motion vector module which calculates motion vector information;
a gyro-based motion estimator which extracts camera rotation information of the camera module from the gyro data;
a motion vector-based motion estimator which extracts frame rotation information from the frame data;
an optical image stabilization (OIS) two-dimensional (2D) translation information estimator which estimates OIS 2D translation information based on the motion vector information, the camera rotation information, and the frame rotation information; and
a camera path optimizer which filters out a low-frequency component from the OIS 2D translation information to produce filtered OIS 2D translation information, and calculates stabilized camera motion information of the camera module using the filtered OIS 2D translation information and the camera rotation information.