Real time hand gesture recognition including hand segmentation and tracking

In this paper we present a system that performs automatic gesture recognition. The system consists of two main components: (i) A unified technique for segmentation and tracking of face and hands using a skin detection algorithm along with handling occlusion between skin objects to keep track of the status of the occluded parts. This is realized by combining 3 useful features, namely, color, motion and position. (ii) A static and dynamic gesture recognition system. Static gesture recognition is achieved using a robust hand shape classification, based on PCA subspaces, that is invariant to scale along with small translation and rotation transformations. Combining hand shape classification with position information and using DHMMs allows us to accomplish dynamic gesture recognition

Doctor of Philosophy

dissertationMedical error causes preventable death in nearly 100,000 patients per year in the US alone. Common sources for error include medication related problems, technical equipment failure, interruptions, complicated and error-prone devices, information overload (providing too much patient data for one person to process effectively), and environmental problems like inadequate lighting or distracting ambient noise. Intensive care units are one of the riskiest locations in a hospital, with up to 9 reported events per 100 patient days. This risk is in large contrast to anesthesia in the operating rooms. Here much advancement in the area of patient safety has been made in the past, dropping the average risk for anesthesia related death to less than 1 in 200,000 anesthetics-an improvement by a factor of 20 in the past 30 years. Improvements in technology and other innovations contributing to this success now need to be adapted for and implemented in the intensive care unit setting. Nurses are increasingly regarded as key decision makers within the healthcare team, as they outnumber physicians 4:1. Reducing nurses' workload and improving medical decision making by providing decision support tools can have a significant impact in reducing the chances of medical errors. This dissertation consists of four manuscripts: 1) a review of previous medical display evaluations, providing insight into solutions that have worked in the past; 2) a study on reducing false alarms and increasing the usefulness of the remaining alarms by introducing alarm delays and detecting alarm context;, such as suctioning automatically silencing ventilator alarms; 3) a study of simplifying the frequent but complicated task of titrating vasoactive medications by providing a titration support tool that predicts blood pressure changes 5 minutes into the future; and 4) a study on supporting the triage of unfamiliar patients by introducing a far-view display that incorporates information from previously disparate devices and presents trend and alarm information at one easy to scan and interpret location

Collision Detection in Cluttered Driving Scenes

The purpose of the present experiment was to examine whether drivers’ detection of collisions was altered when the driving scene was cluttered with scene objects. In this experiment stationary scene objects were manipulated by positioning them behind an approaching object and driver motion induced. We found that observers’ collision detection performance (d’) decreased with the presence of scene objects. These results indicate that the ability to detect a collision is altered by the presence of scene objects. In addition, performance was dependent on display duration, with greater sensitivity at increased durations. Moreover, the results showed a significant criterion shift between scene objects present and scene objects absent, with a decrease in identifying a collision object (hit rate) when scene objects were present but no difference in identification of a collision event when scene objects were absent. This suggests that the decreased performance was due to the inability to accurately determine a collision event because of apparent motion of background scene objects due to driver motion. Because the displays used in this experiment are akin to driving in a cluttered environment, the results of this research have important implications regarding driving safety and crash rates particularly in urban environments with complex scenes. Specifically, the results suggest that one factor in cluttered driving scenes is the apparent motion of background scene objects due to driver motion

Collision Detection in Cluttered Driving Scenes

The purpose of the present experiment was to examine whether drivers’ detection of collisions was altered when the driving scene was cluttered with scene objects. In this experiment stationary scene objects were manipulated by positioning them behind an approaching object and driver motion induced. We found that observers’ collision detection performance (d’) decreased with the presence of scene objects. These results indicate that the ability to detect a collision is altered by the presence of scene objects. In addition, performance was dependent on display duration, with greater sensitivity at increased durations. Moreover, the results showed a significant criterion shift between scene objects present and scene objects absent, with a decrease in identifying a collision object (hit rate) when scene objects were present but no difference in identification of a collision event when scene objects were absent. This suggests that the decreased performance was due to the inability to accurately determine a collision event because of apparent motion of background scene objects due to driver motion. Because the displays used in this experiment are akin to driving in a cluttered environment, the results of this research have important implications regarding driving safety and crash rates particularly in urban environments with complex scenes. Specifically, the results suggest that one factor in cluttered driving scenes is the apparent motion of background scene objects due to driver motion

Experimental apparatus for investigation of fan aeroelastic instabilities in turbomachinery

The application, installation, and monitoring of dynamic strain gage instrumentation on the rotating fan blades for subsonic stalled flutter mode of the first fan rotor are described. The engine installation, the modifications to the engine controls to obtain off schedule operation of the fan, engine aerodynamic instrumentation, and general data acquisition systems are discussed

Simulation and control engineering studies of NASA-Ames 40 foot by 80 foot/80 foot by 120 foot wind tunnels

The development and use of a digital computer simulation of the proposed wind tunnel facility is described. The feasibility of automatic control of wind tunnel airspeed and other parameters was examined. Specifications and implementation recommendations for a computer based automatic control and monitoring system are presented

Návrh řídicího systému pomocí virtuálního dvojčete

There is a need of drastic changes in the field of production from traditional manufacturing to smart manufacturing. Digital twin is the concept which is used for digital representation of a physical system. Digital twin is the key asset for smart factory production line. Production control and planning can be made precise with the help of digital twin in manufacturing process. In this project it is detailed more about how a digital twin system is designed as a parallel process in a production factory by doing palletization of products and transporting out on a conveyor using robotic arm and testing it under laboratory conditions and to specify workplace for the design.Je potřeba drastických změn v oblasti výroby od tradiční výroby až po inteligentní výrobu. Digitální dvojče je koncept, který se používá pro digitální reprezentaci fyzického systému. Digitální dvojče je klíčovým aktivem pro inteligentní výrobní linku. Výrobní řízení a plánování lze pomocí digitálního twin ve výrobním procesu zpřesnit. V tomto projektu je podrobně popsáno, jak je digitální dvojitý systém navržen jako paralelní proces ve výrobním závodě tím, že se provádí paletizace výrobků a transportuje se na dopravníku pomocí robotického ramene a testuje se v laboratorních podmínkách a specifikuje pracoviště pro návrh .450 - Katedra kybernetiky a biomedicínského inženýrstvívýborn

346.350 Source Rack Protection

Management Agency (Agency), authorizing the use of sealed sources containing radioactive materials in irradiators used to irradiate objects or materials using gamma radiation. Also included are radiation safety requirements for irradiators currently in operation