Method for gait information processing and identity identification based on fusion feature

A technology of identity recognition and feature fusion, which is applied in the field of gait feature information extraction, processing and identification based on gait feature information, which can solve problems such as the difficulty of final gait recognition

Inactive Publication Date: 2010-01-20
TIANJIN UNIV
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Problems solved by technology

[0006] However, no technology is perfect. Capturing images from the environment under realistic conditions will be affected by various factors (such as changes in climate conditions, changes in lighting conditions, background chaos, shadows of moving objects, and the distance between objects and the environment. Occasionally or the occlusion between objects, the movement of the camera, etc.), which brings many difficulties to the final recognition of gait

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  • Method for gait information processing and identity identification based on fusion feature
  • Method for gait information processing and identity identification based on fusion feature
  • Method for gait information processing and identity identification based on fusion feature

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Embodiment Construction

[0042]The invention cleverly introduces the idea of ​​Radon transformation into it. The Radon transform is widely used in the line segment detection in the image, which just fits the characteristics that the leg is approximated as a line segment in a certain direction in the image contour, and a large angle change will occur relative to the horizontal axis during walking. This means that the characteristic parameters obtained by Radon transformation can reflect most of the energy information of the original contour, including both the appearance information of the gait and the dynamic information, which can effectively reduce the influence of self-occlusion and shadows. In addition, the contour-based boundary center distance feature is extracted and fused with the Radon transform feature, which effectively makes up for the lack of a single feature. The fusion features are finally input to Support Vector Machines (SVM) for gait classification and recognition.

[0043] The meth...

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Abstract

The invention relates to a method for extracting and processing gait feature information and identifying identification when people walk, and aims at reducing interference of external factors such as a complicated background and the like, realizing better adaptivity to reality conditions, more exactly extracting effective information which can reflect the walking feature of a motion human body so as to improve accuracy of gait identification. The technical proposal of the invention provides the method for gait information processing and identity identification based on a fusion feature. The method comprises the following steps: inputting a video sequence, segmenting profile information of a body object in a video image by target detection, synchronously extracting gait feature parameters by adopting boundary center distance and Radon conversion, carrying out corresponding post processing on the obtained feature parameters, taking a support vector machine as a classifier for classification identification, and evaluating the identification effect. The method is mainly applied to identity identification based on the gait feature information.

Description

technical field [0001] The invention relates to the extraction and processing of gait feature information and identity recognition based on gait feature information when people are walking, in particular to the gait information processing and identity recognition method based on fusion features. Background technique [0002] Biometric identification is the identification of personal identity through various high-tech information detection methods and the use of the inherent physiological or behavioral characteristics of the human body. Biological characteristics mainly include physiological characteristics and behavioral characteristics: physiological characteristics refer to innate and congenital physical characteristics of the human body, such as fingerprints, irises, faces, etc.; behavioral characteristics refer to the characteristics extracted from the movements performed by people The characteristics that come out are mostly acquired, such as gait, handwriting and so on...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06T7/20
Inventor 明东白艳茹万柏坤
Owner TIANJIN UNIV
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