Computer vision based child physical punishment behavior detection method for kindergarten teacher

Abstract

The invention relates to a computer vision based child physical punishment behavior detection method for a kindergarten teacher, and the method comprises the following steps: 1, photographing images of a kindergarten teacher and a child through a gunlock camera, carrying out the detection processing of a target detection network, and judging whether there is interaction between the kindergarten teacher and the child or not through the L2 distance of the central point of a kindergartenteacher and the child; 2, if the interaction exists, shooting images of a kindergarten teacher and a child by using a dome camera, and obtaining two-dimensional skeleton key point information and three-dimensional posture sequence information of the kindergarten teacher and the child after network processing;3, when it is detected that the three-dimensional posture of the kindergartenteacher is a stooping physical punishment posture and the three-dimensional posture of the child is a head-lowering curledstanding posture, projecting the detected kindergarten teacher limb key points in the multiple frames of continuous images to the BIM ground, and when the moving speed of the kindergarten limbs is larger than a threshold value, considering that a child physical punishment behaviorof the kindergarten teacher exists; whether a child is punished or not by the kindergarten teacher can be detected in real time, the detection accuracy is high, the efficiency is high, and the real-time performance is good.

Description

[0001] (1) Technical field [0002] The invention relates to a behavior detection method, in particular to a computer vision-based behavior detection method for corporal punishment of children by preschool teachers. [0003] (two), background technology [0004] Children are the future of the motherland. Kindergarten is a place where children grow up happily. Children should not only spend a good childhood in kindergarten, but also receive preschool education in kindergarten. With the help and education of kindergarten teachers, they can learn good social cognition, Establish good interpersonal relationships with kindergarten children, develop good behaviors and habits, initially form a complete healthy personality, and acquire the ability to recognize nature and society, which will play a very important role in the future growth of children. However, due to the uneven quality of kindergarten teachers, in recent years, incidents of abuse and corporal punishment of children by k...

AI Technical Summary

Problems solved by technology

[0005] In recent years, there have been many existing technologies for detecting abnormal behaviors, such as fighting behavior detection, etc., which are basically aimed at specific scenarios and can also play a certain role in detection, but their shortcomings are also obvious, and the missed detection and false detection are serious. , not suitable for occasions with high requirements such as kindergartens

[0006] The authorized patent with the application number 201510658151.0 discloses a detection method for corporal punishment of children by kindergarten teachers. This method extracts moving foreground blocks through background modeling and foreground recognition to realize the detection of corporal punishment of children by kindergarten teachers. However, the image background in kindergartens is more complicated , children are young and active, and the behavior of kindergarten teachers is changeable, which makes this method unable to accurately extract foreground targets, and the use of optical flow method to detect and track motion foregrounds takes a long time and is inefficient, so real-time performance and practicability are poor