بازشناسی فعالیت انسان با استفاده از مدل تعویضی ساختاری
الموضوعات :
محمدمهدی ارزانی
1
(دانشگاه علم و صنعت ایران)
محمود فتحی
2
(دانشگاه علم و صنعت ایران)
احمد اکبری
3
(دانشگاه علم و صنعت ایران)
الکلمات المفتاحية: مدل‌های گرافی احتمالیبازشناسی فعالیت انسانپیش‌بینی ساختاریافته توزیع‌شدهاسکلت,
ملخص المقالة :
بازشناسی خودکار فعالیت‌های انسان، بخشی جدایی‌ناپذیر از هر برنامه تعاملی با انسان است. یکی از چالش‌های عمده برای شناخت فعالیت، تنوع در نحوه فعالیت افراد است. همچنین بعضی از فعالیت‌ها ساده، سریع و کوتاه هستند، در حالی که بسیاری دیگر پیچیده و دارای جزئیات هستند و در مدت زمان طولانی انجام می‌شوند. در این مقاله، ما از داده‌های اسکلت که از توالی تصاویر RGB-D استخراج می‌شوند استفاده می‌کنیم. ما مدل گرافی را پیشنهاد می‌دهیم که قادر است فعالیت‌های پیچیده و ساده را بازشناسی کند. برای بهینه‌سازی پارامترهای مدل گرافی احتمالی از روش پیش‌بینی ساختاری توزیع‌شده استفاده می‌کنیم. این روش در سه مجموعه داده به طور گسترده مورد آزمایش (60- CAD، UT-Kinect و D3 Florence) قرار می‌گیرد که هر دو نوع فعالیت را پوشش می‌دهند. نتایج نشان می‌دهد که روش ما می‌تواند هر دو نوع فعالیت ساده و پیچیده را به طور مؤثر تشخیص دهد، در حالی که اکثر آثار قبلی تنها بر یکی از این دو نوع تمرکز می‌کنند. همچنین ما نشان می‌دهیم استفاده از روش‌های خوشه‌بندی برای مقداردهی اولیه تأثیر زیادی در نتایج دارد.
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