A Real-Time Sitting Posture Tracking System
نویسندگان
چکیده
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . INTRODUCTION 1 . . . . . . . . . . . . . . . . . . . . . . . . 1.1 Related Work in Computer Vision 2 1.1.1 Appearanced-Based Methods for Object Recognition . . . . . . . . . 3 1.1.2 Human Modeling and Tracking 'I 1 . . . . . . . . . . . . . . . . . . . . . 1.2 IrltelligentEnvironments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3 Pressure Sensing 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4 Anatlomy 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 Ergonolrlics and Sitting 15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5.1 A n t h r ~ ~ o m e t r i c s 15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5.2 Chair Fit 16 . . . . . . . . . . . . . . . . . . . . . . . . . 1.5.3 Sitting Postures at Work 17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 . PRELIMINARY RE. SULTS 19 2.1 Sj t ting Pressure Distribution Measurement System . . . . . . . . . . . . . . 20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2 Static Posture Database 22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2.1 Postlures 22 . . . . . . . . . . . . . . . . . . . . 2.2.2 Static Posture Acquisition Software 23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2.3 Subjects 2.5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2.4 Procedure 26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2.5 Data Preprocessing 31 . . . . . . . . . . . . 2.2.6 Description of Sitting Pressure Distribution Maps 33 2.2.7 Feature Extraction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2.8 I<-Means 39 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.3 Posture Classification 42 . . . . . . . . . . . . . . . . . . . . . . . . . 2.3.1 Posture-Based Eigenspaces 43 2.3.2 Data Visualization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 . . . . . . . . . . . . 2.3.3 A Real-Time Static Posture Classification System 49 2.3.4 ClassificationResults . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 . PROPOSED WORK 57 3.1 Improving Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 3.2 Dynamic Posture Tracking System . . . . . . . . . . . . . . . . . . . . . . . 58 3.2.1 Dynamic Posture Database . . . . . . . . . . . . . . . . . . . . . . . 59 3.2.2 Dynamic Posture Tracking System Development . . . . . . . . . . . . .5 9 3.3 Performance Evaluation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 LIST O F REFE. RENCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
منابع مشابه
Design and Evaluation of a Pressure and Temperature Monitoring System for Pressure Ulcer Prevention
Introduction Pressure ulcers are tissue damages resulting from blood flow restriction, which occurs when the tissue is exposed to high pressure for a long period of time. These painful sores are common in patients and elderly, who spend extended periods of time in bed or wheelchair. In this study, a continuous pressure and temperature monitoring system was developed for pressure ulcer preventio...
متن کاملA Sensing Chair Using Pressure Distribution Sensors
One challenge in multimodal interface research is the lack of robust subsystems that support multimodal interactions. By focusing on a chair—an object that is involved in virtually all human–computer interactions, the sensing chair project enables an ordinary office chair to become aware of its occupant’s actions and needs. Surface-mounted pressure distribution sensors are placed over the seatp...
متن کاملDesign and Evaluation of a Pressure and Temperature Monitoring System for Pressure Ulcer Prevention
Introduction Pressure ulcers are tissue damages resulting from blood flow restriction, which occurs when the tissue is exposed to high pressure for a long period of time. These painful sores are common in patients and elderly, who spend extended periods of time in bed or wheelchair. In this study, a continuous pressure and temperature monitoring system was developed for pressure ulcer preventio...
متن کاملبررسی تأثیر پوسچرهای مختلف کاری بر عملکرد شناختی دانشجویان
Objective Individuals performance at the workplace is affected by different adopted postures. Sitting postures are mostly used during office work. Improper sitting postures may cause muscle fatigue and discomfort in the spine and also result in mental workload. Poor posture may result in human errors and delay in information processing. Previous studies have demonstrated the relationship betwee...
متن کاملSitting Posture Monitoring System Based on a Low-Cost Load Cell Using Machine Learning
Sitting posture monitoring systems (SPMSs) help assess the posture of a seated person in real-time and improve sitting posture. To date, SPMS studies reported have required many sensors mounted on the backrest plate and seat plate of a chair. The present study, therefore, developed a system that measures a total of six sitting postures including the posture that applied a load to the backrest p...
متن کامل