Gait identification method based on optical flow field

A technology of gait recognition and optical flow field, applied in character and pattern recognition, instruments, computer components, etc., can solve problems such as weak representation and insufficient gait feature extraction

Inactive Publication Date: 2016-01-20
JINAN UNIVERSITY
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  • Abstract
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art, and provide a gait recognition method based on the optical flow field. It has strong robustness and effectively solves the problem of insufficient gait feature extraction and low representativeness in the existing gait recognition technology.

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  • Gait identification method based on optical flow field
  • Gait identification method based on optical flow field
  • Gait identification method based on optical flow field

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Embodiment

[0133] This embodiment discloses a gait recognition method based on the optical flow field, such as figure 1 As shown, the steps are as follows:

[0134]S1. Acquiring a gait profile image sequence of an individual, wherein two adjacent frames of images in the gait profile image sequence form a gait optical flow field;

[0135] S2. Obtain the algebraic sum of the optical flow longitudinal components of each gait optical flow field, and determine the gait period according to the periodic change of the algebraic sum of the optical flow longitudinal components;

[0136] The algebraic sum T(t) of the optical flow longitudinal components of each optical flow field in this step is:

[0137] T ( t ) = Σ x = 1 W Σ y = 1 H ...

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Abstract

The invention discloses a gait identification method based on optical flow field. A gait optical flow field is acquired according to an individual gait profile image sequence and furthermore a gait period is detected. The gait optical flow fields in a plurality of gait periods in the gait profile image sequence are added, An individual gait optical flow diaphragm is obtained. Four gait characteristic vectors of a gait optical flow diaphragm line optical flow transverse component summation vector, a gait optical flow diaphragm line optical flow longitudinal component summation vector, a gait optical flow diaphragm row optical flow transverse component summation vector and a gait optical flow diaphragm row optical flow longitudinal component summation vector of each gait optical flow diaphragm of an individual are extracted. The four gait characteristic vectors of the testing individual are matched with four corresponding gait characteristic vectors of a training individual in a gait database. The testing individual is identified in the gait database. According to the gait identification method, gait characteristics are obtained through performing line decomposition and row decomposition on the optical flow component for identifying the identity. Bait motion information in the walking process of a person can be well extracted. The gait identification method has high robustness for dress ornaments, carried objects, etc.

Description

technical field [0001] The invention relates to the technical field of gait recognition, in particular to a gait recognition method based on an optical flow field. Background technique [0002] Gait recognition is an emerging field in biometric technology that aims to identify individuals based on how they walk. Early medical research proved that gait is unique, and it was found through experiments that humans can identify people based on gait. In recent years, with the advancement of computer vision research technology, it has become possible to use computer vision technology to analyze and identify human gait. As a recognition feature, gait has the following advantages: non-invasive, non-obsessive, and low definition requirements , difficult to hide and fake, easy to collect, and capable of long-distance perception, etc. These advantages of gait recognition make it have great application value in the field of intelligent video surveillance, and it has more advantages tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V40/25
Inventor 杨天奇罗正平刘延钧
Owner JINAN UNIVERSITY
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