کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10432593 910253 2013 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Automated approximation of center of mass position in X-ray sequences of animal locomotion
ترجمه فارسی عنوان
تقریب اتوماتیک مرکز جرم در توالی اشعه ایکس حرکت لوکوموتیو
کلمات کلیدی
مرکز جرم، حرکت حیوانات، تجزیه و تحلیل حرکت اشعه ایکس، دیدگاه کامپیوتر،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی پزشکی
چکیده انگلیسی
A crucial aspect of comparative biomechanical research is the center of mass (CoM) estimation in animal locomotion scenarios. Important applications include the parameter estimation of locomotion models, the discrimination of gaits, or the calculation of mechanical work during locomotion. Several methods exist to approximate the CoM position, e.g. force-plate-based approaches, kinematic approaches, or the reaction board method. However, they all share the drawback of not being suitable for large scale studies, as detailed initial conditions from kinematics are required (force-plates), manual interaction is necessary (kinematic approach), or only static settings can be analyzed (reaction board). For the increasingly popular case of X-ray-based animal locomotion analysis, we present an alternative approach for CoM estimation which overcomes these shortcomings. The main idea is to only use the recorded X-ray images, and to map each pixel to the mass of matter it represents. As a consequence, our approach is surgically noninvasive, independent of animal species and locomotion characteristics, and neither requires prior knowledge nor any kind of user interaction. To assess the quality of our approach, we conducted a comparison to highly accurate reaction board experiments for lapwing and rat cadavers, and achieved an average accuracy of 2.6 mm (less than 2% of the animal body length). We additionally verified the practical applicability of the algorithm by comparison to a previously published CoM study which is based on the kinematic method, yielding comparable results.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Biomechanics - Volume 46, Issue 12, 9 August 2013, Pages 2082-2086
نویسندگان
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