Behavior description method and apparatus

Abstract

The invention discloses a method and a device for describing behaviours, belonging to the technical field of behaviour identification. The method comprises steps of obtaining a three-dimensional actor sequence which has total K frames; initializing selected three-dimensional human body models according to a first frame three-dimensional actor in the three-dimensional actor sequences; calculating the first posture parameters and a first three-dimensional human body joint point coordinate; sequentially dividing and tracing limb parts of a second three-dimensional actor to a Kth three-dimensional actor to obtain posture parameters and a three-dimensional human body joint point coordinate of each frame three-dimensional actor from the second three-dimensional actor to the Kth three-dimensional actor; combining the three-dimensional human body joint point coordinates into a three-dimensional human body joint point coordinate sequence, combining all the directional parameters into a directional parameter sequence, and combining all the space position parameters into a space position parameter sequence; and describing three-dimensional actor sequence through the three-dimensional human body joint point coordinate sequence, the directional parameter sequence and the space position parameter sequence.

Description

A method and device for behavior description technical field The present invention relates to the technical field of behavior recognition, in particular to a method and device for behavior description. Background technique In recent years, human behavior recognition has become a research hotspot in many fields, and it has broad application prospects in intelligent video surveillance, human-computer interaction, and virtual reality. Behavior description is one of the most basic problems of behavior recognition, and it is also a very challenging problem. At present, a commonly used behavior description method is the behavior description method based on the human body model. When using this method to describe the behavior, the method of automatically extracting joint points based on the 3D human body model is often used to obtain the 3D human body joint point sequence, and then use the 3D human body joint point sequence. A sequence of points describes a sequence of three-di...

AI Technical Summary

Problems solved by technology

1) The method for automatically extracting joint points based on a three-dimensional human body model in the prior art has a very large amount of computation when obtaining a sequence of three-dimensional human joint points, and the speed of extracting joint points is very slow;

2) The existing technology only uses the 3D human body joint point sequence to describe the behavior of the 3D actor, and the description of the behavior of the 3D actor is single, and the information contained in the 3D actor is not rich

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