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Zdjęcie profilowe: prof. dr hab. inż. Jerzy Wtorek

prof. dr hab. inż. Jerzy Wtorek

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wszystkich: 148

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Rok 2015
  • Comparison of active proximity radars for the wearable devices
    Publikacja

    - Rok 2015

    Two methods of object position and movement estimation in relation to the user of smart glasses were investigated. An active infrared and ultrasonic methods of the obstacle detection were presented and compared. Application of these methods depend on active transducers type (physical medium used), geometry and surface properties of detected objects and their movement direction and speed. In the article properties of both detectors...

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  • Eye tracking within near-to-eye display
    Publikacja

    - Rok 2015

    In this paper we investigate the effectiveness of the gaze interaction within near-to-eye display. The practical aspect of the paper is about combining an eye tracker with smart glasses. Presented research is related with the eGlasses project, which is focused on the development of an open platform in the form of multisensory electronic glasses and related interaction methods. One of the implemented interaction methods is the one...

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  • Interactions using passive optical proximity detector
    Publikacja

    - Rok 2015

    In this paper we evaluated the possible application of a passive, optical sensor as an interface for human-smart glasses interactions. The designed proximity sensor is composed of set of photodiodes and the appropriate hardware and software components. First, experiments were performed for the estimations of such parameters as distance to an object, its width and velocity. Achieved results were satisfactory. Therefore, next, a...

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  • Septic safe interactions with smart glasses in health care
    Publikacja

    - Rok 2015

    In this paper, septic safe methods of interaction with smart glasses, due to the health care environment applications consideration, are presented. The main focus is on capabilities of an optical, proximity-based gesture sensor and eye-tracker input systems. The design of both interfaces is being adapted to the open smart glasses platform that is being developed under the eGlasses project. Preliminary results obtained from the...

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  • Sympathetic Activation Does Not Affect the Cardiac and Respiratory Contribution to the Relationship between Blood Pressure and Pial Artery Pulsation Oscillations in Healthy Subjects
    Publikacja

    - PLOS ONE - Rok 2015

    Using a novel method called near-infrared transillumination backscattering sounding (NIR-T/BSS) that allows for the non-invasive measurement of pial artery pulsation (cc-TQ) and subarachnoid width (sas-TQ) in humans, we assessed the influence of sympathetic activation on the cardiac and respiratory contribution to blood pressure (BP) cc-TQ oscillations in healthy subjects. The pial artery and subarachnoid width response to handgrip...

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  • Visual Attention Distribution Based Assessment of User's Skill in Electronic Medical Record Navigation
    Publikacja

    - Journal of Medical Imaging and Health Informatics - Rok 2015

    Currently, the most precise way of reflecting the skills level is an expert’s subjective assessment. In this paper we investigate the possibility of the use of eye tracking data for scalar quantitative and objective assessment of medical staff competency in EMR system navigation. According to the experiment conducted by Yarbus the observation process of particular features is associated with thinking. Moreover, eye tracking is...

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Rok 2014
  • A detector of sleep disorders for using at home
    Publikacja

    - Journal of Telecommunications and Information Technology - Rok 2014

    Obstructive sleep apnea usually requires all-ni ght examination in a specialized clinic, under the supervision of a medical staff. Because of those requirements it is an expensive and a non-widely utilized test. Moving the examination procedure to patients’ home with automatic analysis algorithms involved will decrease the costs and make it available for larger group of patients. The developed device allows all-night recordings...

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  • Analiza aktywności osób z zastosowaniem czujników ruchu
    Publikacja

    - Rok 2014

    Artykuł przedstawia zaprojektowany i zrealizowany system monitoringu aktywności osób z wykorzystaniem pasywnych czujników ruchu i metody generacji map aktywności. Pokazano sposób generacji map aktywności oraz wyniki uzyskane dla badań symulacyjnych i z udziałem osób

  • Analysis of activity of people using motion sensors
    Publikacja

    - Rok 2014

    The article presents the designed and implemented system for activity monitoring of people using passive motion sensors and methods for activity maps generation. In the paper he method is presented and results obtained for simulated data and for data from observations with the participation of people.

  • COMPARISON OF BLOOD PRESSURE PREDICTION METHODS
    Publikacja

    - Rok 2014

    In the paper dierent approaches of predicting blood pressure values are presented. Basically, two methods and theirs modifications are considered. In total, seven algorithms have been examined. Tests have been conducted using both synthetic and clinical data. From our study it follows that none of the examined methods is superior to other.

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  • ECG-based prediction of ventricular fibrillation by means of the PCA
    Publikacja

    - Rok 2014

    A Sudden Cardiac Death (SCD) is a death resulting from cardiac failure with no significant symptoms earlier than one hour before occurrence. It is the cause of for approximately 400000 deaths per year in United States and millions of deaths worldwide. The proposed system, including two-stage algorithm and wearable diagnostic device allows for SCD risk estimation and continuous monitoring of high risk patients. A single channel...

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  • Head movement compensation algorithm in multi-display communication by gaze
    Publikacja

    - Rok 2014

    An influence of head movements on the gaze estimation accuracy when using a head mounted eye tracking system is discussed in the paper. This issue has been examined for a multi-display environment. It was found that head movement (rotation) to some extent does not influence on the gaze estimation accuracy seriously. Acceptable results were obtained when using eye-tracker to communicate with a computer via in two displays simultaneously.

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  • Human-computer interactions in speech therapy using a blowing interface
    Publikacja

    - Rok 2014

    In this paper we present a new human-computer interface for the quantitative measurement of blowing activities. The interface can measure the air flow and air pressure during the blowing activity. The measured values are stored and used to control the state of the graphical objects in the graphical user interface. In speech therapy children will find easier to play attractive therapeutic games than to perform repetitive and tedious,...

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  • Interactions with recognized objects
    Publikacja

    - Rok 2014

    Implicit interaction combined with object recognition techniques opens a new possibility for gathering data and analyzing user behavior for activity and context recognition. The electronic eyewear platform, eGlasses, is being developed, as an integrated and autonomous system to provide interactions with smart environment. In this paper we present a method for the interactions with the recognized objects that can be used for electronic...

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  • Sleep Apnea Detection by Means of Analyzing Electrocardiographic Signal
    Publikacja

    - Advances in Intelligent Systems and Computing - Rok 2014

    Obstructive sleep apnea (OSA) is a condition of cyclic, periodic ob-struction (stenosis) of the upper respiratory tract. OSA could be associated with serious cardiovascular problems, such as hypertension, arrhythmias, hearth failure or peripheral vascular disease. Understanding the way of connection between OSA and cardiovascular diseases is important to choose proper treatment strategy. In this paper, we present a method for integrated...

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Rok 2013
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Rok 2011
Rok 2010

wyświetlono 4794 razy