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Gait Recognition Based on Body Silhouette

Author: ZhangHeng
Tutor: ZhouJie
School: Nanjing University of Information Engineering
Course: Signal and Information Processing
Keywords: Gait Recognition Shape feature Wavelet Transform Support Vector Machine
CLC: TP391.41
Type: Master's thesis
Year: 2011
Downloads: 77
Quote: 1
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Abstract


With the development of information technology , biometric technology in recent years as an effective technological means to ensure the security of the information on a wide range of research and application . Gait Recognition is an emerging field of biometric technology . Many studies have shown that , according to the identity of the human gait only . The gait recognition study includes the extracted gait , gait description , gait recognition and gait databases . This paper studies the first three aspects . Gait extraction , first using a median filter model , the scene in the background get ; then use the background difference image method to obtain the gait area , and then combined with the histogram automatic threshold segmentation and mathematical morphology algorithm to eliminate noise interference , and finally neighborhood boundary tracking algorithm to extract the coordinates of the movement of the body's contours . Describe aspects of gait , using the periodic variation of the aspect ratio of a moving human body to extract the key frame, and key frames gait contour extraction and calculation . Imperfect describe the characteristics of gait contour intuitive , this paper presents a boundary center distance of wavelet contour descriptors as gait contour characteristics . The characteristics of the image translation , scaling , and rotation are invariant ; very intuitive description of the contour , and feel very similar ; support different resolutions feature extraction . Therefore , this feature can be used to describe the gait characteristics of the object , and laid a solid foundation for the follow-up work gait recognition . Gait recognition , this paper presents a contour descriptor based on wavelet and support vector machine (SVM) , gait recognition method . The method used to describe the gait contour feature is the wavelet contour descriptor. Reconstruct this paper based on the characteristics of the two types of SVM recognition based on a set of multi- class training and recognition programs in order to achieve efficient real-time identification of gait object . The last programming the various methods , and design and development of a complete gait recognition system , and provide a platform for research and testing of the new method of gait recognition .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Pattern Recognition and devices > Image recognition device
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