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Video-based Rat Limb Motion Analysis

Author: WangSong
Tutor: ZhangHengYi
School: Zhejiang University
Course: Biomedical Engineering
Keywords: Animal behavioristics Motion capture Mean-shift Joint angular vector
CLC: TP391.41
Type: Master's thesis
Year: 2011
Downloads: 57
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Abstract


Behavior analysis of the laboratory animal is a necessary part of the research of high-level nerve centers function. It is not only widely applied in neuropharmacology and neuropsychology but also have extended to the interdisciplinary fields, such as the bionics, artificial intelligent and brain computer interface. The parameterized description of the locomotor behavior is the basis of the behavior analysis, so to set up the method of automatic analysis of the animal behavior is significant for related research.We have developed an animal behavioristics experimental facility and real-time image process software, according to the requirement of the characteristic of the rat’s behavior and the forelimb moving behavior analysis. The Color-marker method is used for motion capture.Software system consists of image acquiring, color image preprocessing, color image dividing, object identifying and tracking. First, the fast image segmentation algorithm is used to detect the marker from image. Then, markers are detected and tracked using improved Mean-shift algorithm. Finally, the angles of forelimb joint are used to describe the motion of forelimb.We have used the automatic analysis method mentioned above to analyze rat’s gait. The experiment results show that the software can accurately record forelimb motion trace. According to the angles of forelimb joint, rat’s gait can be classified to three phases: Backswing-Heel-Off, forward swing, Initial Contact-ground.

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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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