US 11,736,799 B2
Zoom control method, apparatus and medium
Chihyi Cheng, Beijing (CN); and Liangming Zhang, Beijing (CN)
Assigned to Beijing Xiaomi Mobile Software Co., Ltd., Beijing (CN)
Filed by Beijing Xiaomi Mobile Software Co., Ltd., Beijing (CN)
Filed on Dec. 29, 2021, as Appl. No. 17/564,681.
Claims priority of application No. 202110744581.X (CN), filed on Jul. 1, 2021.
Prior Publication US 2023/0007181 A1, Jan. 5, 2023
Int. Cl. H04N 23/69 (2023.01); H04N 23/63 (2023.01); G02B 13/00 (2006.01); G02B 15/04 (2006.01); G06F 3/0488 (2022.01)
CPC H04N 23/69 (2023.01) [G02B 13/009 (2013.01); G02B 13/0065 (2013.01); G02B 15/04 (2013.01); G06F 3/0488 (2013.01); H04N 23/631 (2023.01); G06F 2203/04806 (2013.01); G06F 2203/04808 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A zoom control method, comprising
determining a midpoint of a connecting line of touch points located on both sides of an image of an object to be zoomed-in on, wherein the image of the object is displayed on a screen of a camera;
determining a pixel vector formed from the midpoint of the connecting line to a center point of the screen;
converting the pixel vector into an angle vector based on a conversion relationship between a diagonal angle of view of a current focal length range and a diagonal pixel of an image sensor of a camera system; and
controlling the image of the object to move to the center point of the screen based on the angle vector.