US 11,812,152 B2
Method and apparatus for controlling video frame image in live classroom
Jin Huang, Beijing (CN); Gang Huang, Beijing (CN); Kesheng Wang, Beijing (CN); Yin Yao, Beijing (CN); and Qiaoling Xu, Beijing (CN)
Assigned to BEIJING AMBOW SHENGYING EDUCATION AND TECHNOLOGY CO., LTD., Beijing (CN)
Filed by Beijing Ambow Shengying Education and Technology Co., Ltd., Beijing (CN)
Filed on Jul. 29, 2021, as Appl. No. 17/388,084.
Claims priority of application No. 202110424383.5 (CN), filed on Apr. 20, 2021.
Prior Publication US 2022/0337755 A1, Oct. 20, 2022
Int. Cl. H04N 23/695 (2023.01); G06T 7/80 (2017.01); G06T 7/73 (2017.01); G06T 7/13 (2017.01); G09B 5/06 (2006.01); H04N 23/611 (2023.01)
CPC H04N 23/695 (2023.01) [G06T 7/13 (2017.01); G06T 7/73 (2017.01); G06T 7/80 (2017.01); G09B 5/065 (2013.01); H04N 23/611 (2023.01); G06T 2207/10016 (2013.01); G06T 2207/30196 (2013.01); G06T 2207/30244 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method for controlling a video frame image in a live classroom, comprising:
acquiring image information of a target person in the video frame image;
determining a plurality of detection points according to the image information, the plurality of detection points representing posture characteristics of the target person;
determining distribution information of the plurality of detection points based on relationship between the plurality of detection points and a preset first area;
determining adjustment information of a camera based on the distribution information and camera parameters; and
adjusting the camera according to the adjustment information, so that at least a part of the image information of the target person in the video frame image is located in a preset second area, wherein the preset second area is located in the preset first area,
wherein, the distribution information comprises a first number of the detection points located on the left side of the preset first area in a horizontal direction, and a second number of the detection points located on the right side of the preset first area in the horizontal direction;
the adjustment information comprises an adjustment direction; and
the determining adjustment information of the camera based on the distribution information and camera parameters comprises:
comparing the first number of the detection points and the second number of the detection points to determine the adjustment direction,
wherein the comparing the first number and the second number to determine the adjustment direction comprises:
in response to the first number being greater than the second number, and difference between the first number and the second number being greater than a preset adjustment threshold, it is determined that the adjustment direction is a left-side direction, wherein the adjustment threshold is greater than 0; and
in response to the first number being less than the second number, and difference between the second number and the first number being greater than the adjustment threshold, it is determined that the adjustment direction is a right-side direction.