Vision-based human body state judgment algorithm

Abstract

The invention discloses a vision-based human body state judgment algorithm, which belongs to the technical field of computer vision, and comprises the following specific steps of moving human body detection, feature extraction and description, behavior recognition and feature extraction and description: S1, obtaining an original image, and obtaining a foreground binary image of the original imagethrough a motion detection algorithm to serve as an optical flow calculation region; s2, performing black edge filling on the optical flow calculation area to obtain a square optical flow graph, dividing the square optical flow graph into 16 equal parts by using a 4 * 4 grid, taking an optical flow average value of each area, and finally representing an optical flow vector of the frame of pictureby using a 16-dimensional vector; assuming that the silhouette feature vector obtained from the frame is s and the optical flow feature vector is 0, the fusion feature V of the two is equal to [s; 0].The method is simple in structure and convenient to use, improves the accuracy of behavior recognition, reduces the complexity and feature dimension of feature extraction through a quick feature fusion method, is high in practicality, and is suitable for popularization and application.

Description

technical field [0001] The invention relates to the technical field of computer vision, in particular to a human body state judgment algorithm based on vision. Background technique [0002] Judgment of human body state based on vision refers to obtaining human motion video through a camera, processing it with computer technology, and finally enabling the computer to judge and describe human behavior. Human state judgment based on vision is an important research field involving computer vision, machine learning, psychology, human kinematics and other disciplines. With the development of computer hardware and software technology and the increasing market demand for security equipment, behavior analysis is receiving more and more attention and research. [0003] Vision-based human body status recognition can be used in home security systems and medical monitoring systems. The intelligent monitoring system can analyze the behavior of the guardian. When the guardian has an abno...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a human body state judgment algorithm based on vision in order to solve the above-mentioned problems of high complexity of feature extraction and slow recognition speed in the human body state judgment process, which has the advantages of high flexibility and high scalability

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