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A human motion description method based on an inertial sensor

An inertial sensor and human motion technology, applied in the field of human behavior recognition, can solve problems such as lack of natural language description

Active Publication Date: 2019-05-10
XIAN UNIV OF TECH
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AI Technical Summary

Problems solved by technology

At present, most of the analysis and recognition technologies for action postures use numerical features such as angle, speed, and acceleration to compare actions, and lack natural language descriptions.

Method used

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  • A human motion description method based on an inertial sensor
  • A human motion description method based on an inertial sensor
  • A human motion description method based on an inertial sensor

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Embodiment Construction

[0050] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0051] The present invention is an action description language based on an inertial sensor, and the flow is as follows: figure 1 As shown, the specific steps are as follows:

[0052] Step 1, action data collection, collect dance action data through inertial sensors, take 11 main parts of the human body as collection nodes (a skeletal joint may establish multiple skeletal nodes when building a skeletal hierarchy), and define 26 skeletal nodes Form the human bone hierarchy, the bone hierarchy stores the initial offset between each joint of the human body in the initial T-shaped posture, the initial offset is represented by the offset distance in the three directions of x, y, z, the bone hierarchy is related to the action The data is also saved in the BVH format of the motion capture data. The bone structure in the data is as follows: figure ...

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Abstract

A human motion description method based on an inertial sensor comprises the following steps: collecting motion data through the inertial sensor, defining a skeleton hierarchical structure, and storingthe skeleton hierarchical structure in a motion capture data BVH format; carrying out coordinate conversion on BVH Euler angle data, each frame of action of each limb is represented in the form of relative world coordinates, a data frame sequence is formed, and subsequent action space orientation analysis is facilitated; after a human body posture frame sequence is obtained, extracting a key frame by adopting a key frame extraction technology; and finally, analyzing the spatial orientation of the human motion, calculating other motion characteristic parameters of the action key frame, establishing mapping between limb coordinates and the spatial orientation of the human body, and determining a description language to describe the subject content of the human motion. Three theme contents of time, space and force effect of a human body action process are described in detail through an action description language, so that non-computer related personnel can be applied to the fields of action analysis and recognition, and help is provided for human body action analysis and human body movement biomechanics.

Description

technical field [0001] The invention belongs to the technical field of human body action recognition, and in particular relates to a human body action description method based on an inertial sensor. Background technique [0002] In the process of human movement, the general principle of movement is to analyze the movement structure of walking, running, jumping, swimming, sliding, hitting and so on in human movement, and consolidate and deepen the understanding of movement theory by recording and analyzing movement examples. Professional sports have a set of basic steps and postures. Usually, the basic steps and postures can be learned quickly, but it takes longer to master the force effect of the action, that is, "the action is in place", so the recognition of these basic steps and postures is necessary. At present, most of the analysis and recognition technologies for action postures use numerical features such as angle, speed, and acceleration to compare actions, and lack...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/246G06K9/00
Inventor 李军怀姬文超徒鹏佳王怀军于蕾
Owner XIAN UNIV OF TECH
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