Wearable Camera- and Accelerometer-Based Fall Detection on Portable Devices

Real Time Advanced Clustering System

“…The above formulas indicate that two motion vectors are considered to belong to the same cluster if they are spatially near (4), have got similar module (5) and similar orientation (6). While (4) and (5) are commonly used for labelling [23], (6) has been added for robustness of the system.…”

“…While (4) and (5) are commonly used for labelling [23], (6) has been added for robustness of the system.…”

“…In (7) and (8), the distance for clusters concept is analogous to distance for points concept in (4) in labelling step; while (9) is analogous to (6). The above formula indicates that two clusters are similar if they are spatially near (7)(8) and have got similar orientation (9).…”

“…A clustering system, in particular regarding detection and tracking of moving objects, is a really common and important task, widely used in computer vision as low-level task for different applications like: camera surveillance [1], Cross Traffic Alert (CTA) [2], Intelligent Transport System (ITS) [3], object detection and recognition [4], people detection and recognition [5], people behavior analysis (e. g. anti-theft, falling detection, etc.) [6] and user interfaces by gesture [7]. Efficiency and robustness of clustering, considered as low-level task, is really important because it influences the performance of all higher level tasks of the aforementioned applications.…”

Privacy Leakage of Physical Activity Levels in Wireless Embedded Wearable Systems

“…More recently, wearable sensors have been used along other sensing technologies to form multi-modal residential infrastructures that are capable of understanding how daily activities affect our well-being. The goal of these multi-modal platforms is to relieve the healthcare sector and improve the quality of life [5] [6].…”