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A new abnormal gait analysis method and system

An analysis method and abnormal technology, applied in the new field of abnormal gait analysis, can solve the problems of large application limitations and needs to be improved, and achieve the effect of wide application range, expanded application range, and accurate monitoring results

Active Publication Date: 2020-05-15
东北大学秦皇岛分校
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Problems solved by technology

However, in this plan, it is only applicable when three consecutive steps must fall on the same straight line. It is on a straight line, so the application of this technology is limited; and even in practical applications, it is considered that three consecutive steps fall on the same straight line, the obtained adjacent step ratio and the final abnormal gait analysis The accuracy of the results still needs to be improved

Method used

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  • A new abnormal gait analysis method and system
  • A new abnormal gait analysis method and system
  • A new abnormal gait analysis method and system

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Embodiment Construction

[0072] Embodiments of the present invention: a new abnormal gait analysis method, such as figure 2 shown, including the following steps:

[0073] S1, track the moving human target, and correct the footprints of three consecutive steps in the image, and obtain the image pixel position of the corrected footprints on a straight line Specifically, the following steps may be included:

[0074] S11, tracking the moving human target (such as the Camshift algorithm can be used), and obtaining the silhouette of the human body (such as the ViBe target detection method can be used);

[0075] S12, segment the silhouette of the human body, and locate the feet of the human body according to the silhouette, and obtain the image pixel positions (u i ,v i );

[0076] Among them, the method of bump detection can be used to locate the human feet; specifically, the following steps are included:

[0077] Perform bump detection on the 25% area of ​​​​the human silhouette from bottom to top; ...

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Abstract

The invention discloses a new abnormal gait analysis method and system. The method includes: S1, tracking a moving human target, and correcting the footprints of three consecutive steps in the image to obtain the corrected footprints on a straight line The image pixel position S2 of the corrected footprint is used to calculate the observation distance of two adjacent corrected footprints in the image and the ratio A and B of the corrected observation step between two adjacent steps according to the corrected image pixel position of the footprint; S3 , assuming that the step length of one side of the leg is basically the same during the march, that is, calculate the ratio of the actual step length of the second step to the actual step length of the first step; S4, do cluster statistics on the ratio of adjacent step lengths of the monitored object , and compare the real-time adjacent step ratio of the monitored object with the cluster center of the clustering result. The invention has a wider scope of application and is suitable for general straight running conditions. Compared with the uncorrected gait analysis method and the MGM system, the invention has a higher accuracy rate of adjacent step length ratio estimation and reduces errors.

Description

technical field [0001] The invention relates to a new abnormal gait analysis method and system, belonging to the technical field of health monitoring. Background technique [0002] In recent years, with the aging of the population, the increasing number of sub-healthy people, and the gradual improvement of people's awareness of medical care, people's needs for elderly care, chronic disease care, sub-health care and emergency first aid have become more and more urgent. Intelligent monitoring and analysis of the health status of people has become a worldwide focus. Gait, as an important feature reflecting human health status and behavioral ability, has attracted much attention in clinical research such as medical diagnosis and disease prevention. At present, most of the analysis and inspection of gait rely on professional medical personnel, and the walking ability is mainly evaluated by observing the completion of the specified walking action on the specified route. [0003]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06K9/62G08B21/04
CPCG08B21/0476G06V40/20G06F18/22G06F18/23
Inventor 才溪韩光汪晋宽
Owner 东北大学秦皇岛分校
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